./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-61.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/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_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-61.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/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_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/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 4530217ca1f20f3cb75b415cf917b29c2da92488d9a0626f4e89358462ce0871 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:50:46,253 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:50:46,395 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:50:46,403 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:50:46,404 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:50:46,448 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:50:46,448 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:50:46,449 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:50:46,450 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:50:46,456 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:50:46,457 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:50:46,457 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:50:46,458 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:50:46,460 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:50:46,461 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:50:46,461 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:50:46,462 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:50:46,462 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:50:46,463 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:50:46,463 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:50:46,463 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:50:46,464 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:50:46,465 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:50:46,465 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:50:46,465 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:50:46,466 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:50:46,467 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:50:46,467 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:50:46,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:46,468 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:50:46,469 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:50:46,470 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:50:46,470 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:50:46,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:50:46,470 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:50:46,471 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:50:46,471 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:50:46,471 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:50:46,471 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:50:46,472 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_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4530217ca1f20f3cb75b415cf917b29c2da92488d9a0626f4e89358462ce0871 [2023-11-19 07:50:46,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:50:46,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:50:46,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:50:46,820 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:50:46,820 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:50:46,822 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-61.i [2023-11-19 07:50:49,938 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:50:50,256 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:50:50,259 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-61.i [2023-11-19 07:50:50,276 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/data/c181b5a2e/857b9c48a4f143e192b372992492f0a7/FLAGbbc3cbc18 [2023-11-19 07:50:50,299 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/data/c181b5a2e/857b9c48a4f143e192b372992492f0a7 [2023-11-19 07:50:50,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:50:50,310 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:50:50,313 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:50,313 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:50:50,320 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:50:50,321 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:50" (1/1) ... [2023-11-19 07:50:50,322 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a912cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:50, skipping insertion in model container [2023-11-19 07:50:50,323 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:50" (1/1) ... [2023-11-19 07:50:50,385 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:50:50,594 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_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-61.i[916,929] [2023-11-19 07:50:50,712 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:50,726 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:50:50,737 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_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-61.i[916,929] [2023-11-19 07:50:50,820 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:50,859 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:50:50,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:50 WrapperNode [2023-11-19 07:50:50,860 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:50,864 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:50,864 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:50:50,864 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:50:50,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:50" (1/1) ... [2023-11-19 07:50:50,897 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:50" (1/1) ... [2023-11-19 07:50:50,968 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 243 [2023-11-19 07:50:50,968 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:50,969 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:50:50,969 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:50:50,970 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:50:50,980 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:50" (1/1) ... [2023-11-19 07:50:50,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:50" (1/1) ... [2023-11-19 07:50:50,987 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:50" (1/1) ... [2023-11-19 07:50:50,987 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:50" (1/1) ... [2023-11-19 07:50:51,013 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:50" (1/1) ... [2023-11-19 07:50:51,018 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:50" (1/1) ... [2023-11-19 07:50:51,026 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:50" (1/1) ... [2023-11-19 07:50:51,031 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:50" (1/1) ... [2023-11-19 07:50:51,041 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:50:51,057 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:50:51,057 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:50:51,057 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:50:51,058 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:50" (1/1) ... [2023-11-19 07:50:51,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:51,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:51,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:50:51,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:50:51,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:50:51,161 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:50:51,161 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:50:51,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:50:51,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:50:51,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:50:51,314 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:50:51,316 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:50:52,134 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:50:52,153 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:50:52,153 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:50:52,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:52 BoogieIcfgContainer [2023-11-19 07:50:52,158 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:50:52,166 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:50:52,166 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:50:52,171 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:50:52,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:50:50" (1/3) ... [2023-11-19 07:50:52,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6d74c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:52, skipping insertion in model container [2023-11-19 07:50:52,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:50" (2/3) ... [2023-11-19 07:50:52,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6d74c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:52, skipping insertion in model container [2023-11-19 07:50:52,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:52" (3/3) ... [2023-11-19 07:50:52,176 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-61.i [2023-11-19 07:50:52,199 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:50:52,199 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:50:52,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:50:52,291 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;@474c9f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:50:52,292 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:50:52,300 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 73 states have (on average 1.5068493150684932) internal successors, (110), 74 states have internal predecessors, (110), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-19 07:50:52,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-19 07:50:52,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:52,331 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:52,332 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:52,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:52,344 INFO L85 PathProgramCache]: Analyzing trace with hash -362886801, now seen corresponding path program 1 times [2023-11-19 07:50:52,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:52,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84844237] [2023-11-19 07:50:52,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:52,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:52,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:52,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84844237] [2023-11-19 07:50:52,714 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:50:52,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20066673] [2023-11-19 07:50:52,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:52,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:52,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:52,717 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:52,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:50:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:52,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:50:53,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:53,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2023-11-19 07:50:53,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:53,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20066673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:53,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:53,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:50:53,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527092972] [2023-11-19 07:50:53,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:53,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:50:53,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:53,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:50:53,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:50:53,155 INFO L87 Difference]: Start difference. First operand has 102 states, 73 states have (on average 1.5068493150684932) internal successors, (110), 74 states have internal predecessors, (110), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-19 07:50:53,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:53,229 INFO L93 Difference]: Finished difference Result 197 states and 344 transitions. [2023-11-19 07:50:53,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:50:53,232 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 175 [2023-11-19 07:50:53,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:53,245 INFO L225 Difference]: With dead ends: 197 [2023-11-19 07:50:53,245 INFO L226 Difference]: Without dead ends: 98 [2023-11-19 07:50:53,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:50:53,256 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:53,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:53,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-19 07:50:53,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-11-19 07:50:53,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 70 states have (on average 1.4714285714285715) internal successors, (103), 70 states have internal predecessors, (103), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-19 07:50:53,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 155 transitions. [2023-11-19 07:50:53,347 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 155 transitions. Word has length 175 [2023-11-19 07:50:53,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:53,348 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 155 transitions. [2023-11-19 07:50:53,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-19 07:50:53,349 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 155 transitions. [2023-11-19 07:50:53,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-19 07:50:53,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:53,354 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:53,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:53,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:50:53,577 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:53,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:53,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1184066599, now seen corresponding path program 1 times [2023-11-19 07:50:53,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:53,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717353253] [2023-11-19 07:50:53,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:53,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:53,730 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:53,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1081911099] [2023-11-19 07:50:53,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:53,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:53,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:53,746 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:53,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:50:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:53,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:50:53,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:55,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 25 proven. 75 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-19 07:50:55,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-11-19 07:50:55,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:55,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717353253] [2023-11-19 07:50:55,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:50:55,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081911099] [2023-11-19 07:50:55,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081911099] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:55,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:50:55,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-11-19 07:50:55,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715751059] [2023-11-19 07:50:55,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:55,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:50:55,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:55,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:50:55,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:50:55,519 INFO L87 Difference]: Start difference. First operand 98 states and 155 transitions. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) [2023-11-19 07:50:57,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:57,002 INFO L93 Difference]: Finished difference Result 507 states and 794 transitions. [2023-11-19 07:50:57,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-19 07:50:57,003 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) Word has length 175 [2023-11-19 07:50:57,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:57,009 INFO L225 Difference]: With dead ends: 507 [2023-11-19 07:50:57,009 INFO L226 Difference]: Without dead ends: 412 [2023-11-19 07:50:57,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=202, Invalid=398, Unknown=0, NotChecked=0, Total=600 [2023-11-19 07:50:57,013 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 815 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:57,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 880 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 07:50:57,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2023-11-19 07:50:57,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 321. [2023-11-19 07:50:57,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 237 states have (on average 1.5021097046413503) internal successors, (356), 237 states have internal predecessors, (356), 78 states have call successors, (78), 5 states have call predecessors, (78), 5 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-11-19 07:50:57,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 512 transitions. [2023-11-19 07:50:57,149 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 512 transitions. Word has length 175 [2023-11-19 07:50:57,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:57,151 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 512 transitions. [2023-11-19 07:50:57,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) [2023-11-19 07:50:57,152 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 512 transitions. [2023-11-19 07:50:57,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-19 07:50:57,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:57,161 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:57,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:57,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:57,381 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:57,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:57,382 INFO L85 PathProgramCache]: Analyzing trace with hash -621371735, now seen corresponding path program 1 times [2023-11-19 07:50:57,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:57,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432397484] [2023-11-19 07:50:57,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:57,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:57,475 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:57,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941136261] [2023-11-19 07:50:57,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:57,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:57,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:57,493 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:57,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:50:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:57,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:50:57,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:57,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 435 proven. 60 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2023-11-19 07:50:57,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:58,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 15 proven. 60 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-11-19 07:50:58,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:58,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432397484] [2023-11-19 07:50:58,158 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:50:58,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941136261] [2023-11-19 07:50:58,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941136261] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:58,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:50:58,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-11-19 07:50:58,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001364339] [2023-11-19 07:50:58,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:58,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:50:58,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:58,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:50:58,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:50:58,165 INFO L87 Difference]: Start difference. First operand 321 states and 512 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2023-11-19 07:50:58,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:58,664 INFO L93 Difference]: Finished difference Result 851 states and 1334 transitions. [2023-11-19 07:50:58,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 07:50:58,665 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 175 [2023-11-19 07:50:58,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:58,679 INFO L225 Difference]: With dead ends: 851 [2023-11-19 07:50:58,679 INFO L226 Difference]: Without dead ends: 586 [2023-11-19 07:50:58,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 341 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:50:58,685 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 331 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:58,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 480 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:50:58,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2023-11-19 07:50:58,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 353. [2023-11-19 07:50:58,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 266 states have (on average 1.4285714285714286) internal successors, (380), 266 states have internal predecessors, (380), 78 states have call successors, (78), 8 states have call predecessors, (78), 8 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-11-19 07:50:58,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 536 transitions. [2023-11-19 07:50:58,769 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 536 transitions. Word has length 175 [2023-11-19 07:50:58,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:58,771 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 536 transitions. [2023-11-19 07:50:58,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2023-11-19 07:50:58,771 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 536 transitions. [2023-11-19 07:50:58,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-19 07:50:58,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:58,776 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:58,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:58,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:58,999 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:50:58,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:58,999 INFO L85 PathProgramCache]: Analyzing trace with hash 699129967, now seen corresponding path program 1 times [2023-11-19 07:50:59,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:59,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457705754] [2023-11-19 07:50:59,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:59,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:59,042 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:50:59,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1757187517] [2023-11-19 07:50:59,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:59,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:59,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:59,044 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:59,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:50:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:59,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-19 07:50:59,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:00,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 52 proven. 144 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-11-19 07:51:00,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:51:01,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-19 07:51:01,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:01,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457705754] [2023-11-19 07:51:01,349 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:51:01,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757187517] [2023-11-19 07:51:01,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757187517] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:51:01,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:51:01,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 16 [2023-11-19 07:51:01,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433540932] [2023-11-19 07:51:01,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:01,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:51:01,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:01,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:51:01,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:51:01,353 INFO L87 Difference]: Start difference. First operand 353 states and 536 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 07:51:02,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:02,206 INFO L93 Difference]: Finished difference Result 787 states and 1172 transitions. [2023-11-19 07:51:02,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:51:02,208 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2023-11-19 07:51:02,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:02,212 INFO L225 Difference]: With dead ends: 787 [2023-11-19 07:51:02,212 INFO L226 Difference]: Without dead ends: 526 [2023-11-19 07:51:02,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2023-11-19 07:51:02,214 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 190 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:02,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 730 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:51:02,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-11-19 07:51:02,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 381. [2023-11-19 07:51:02,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 294 states have (on average 1.401360544217687) internal successors, (412), 294 states have internal predecessors, (412), 78 states have call successors, (78), 8 states have call predecessors, (78), 8 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-11-19 07:51:02,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 568 transitions. [2023-11-19 07:51:02,282 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 568 transitions. Word has length 176 [2023-11-19 07:51:02,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:02,283 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 568 transitions. [2023-11-19 07:51:02,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 07:51:02,284 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 568 transitions. [2023-11-19 07:51:02,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-19 07:51:02,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:02,287 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:02,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:51:02,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:51:02,494 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:02,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:02,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1139542924, now seen corresponding path program 1 times [2023-11-19 07:51:02,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:02,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402575572] [2023-11-19 07:51:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:02,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:02,565 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:51:02,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086842890] [2023-11-19 07:51:02,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:02,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:51:02,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:51:02,571 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:51:02,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:51:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:02,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 07:51:02,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:04,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 327 proven. 198 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2023-11-19 07:51:04,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:51:06,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 15 proven. 60 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-11-19 07:51:06,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:06,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402575572] [2023-11-19 07:51:06,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:51:06,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086842890] [2023-11-19 07:51:06,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086842890] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:51:06,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:51:06,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 21 [2023-11-19 07:51:06,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591445070] [2023-11-19 07:51:06,039 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:51:06,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-19 07:51:06,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:06,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-19 07:51:06,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-11-19 07:51:06,042 INFO L87 Difference]: Start difference. First operand 381 states and 568 transitions. Second operand has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 20 states have internal predecessors, (101), 5 states have call successors, (51), 4 states have call predecessors, (51), 7 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52) [2023-11-19 07:51:07,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:07,975 INFO L93 Difference]: Finished difference Result 725 states and 1045 transitions. [2023-11-19 07:51:07,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 07:51:07,977 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 20 states have internal predecessors, (101), 5 states have call successors, (51), 4 states have call predecessors, (51), 7 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52) Word has length 176 [2023-11-19 07:51:07,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:07,980 INFO L225 Difference]: With dead ends: 725 [2023-11-19 07:51:07,981 INFO L226 Difference]: Without dead ends: 436 [2023-11-19 07:51:07,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2023-11-19 07:51:07,983 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 342 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:07,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 777 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 07:51:07,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-11-19 07:51:08,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 284. [2023-11-19 07:51:08,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 221 states have (on average 1.339366515837104) internal successors, (296), 221 states have internal predecessors, (296), 52 states have call successors, (52), 10 states have call predecessors, (52), 10 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-19 07:51:08,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 400 transitions. [2023-11-19 07:51:08,033 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 400 transitions. Word has length 176 [2023-11-19 07:51:08,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:08,034 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 400 transitions. [2023-11-19 07:51:08,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 20 states have internal predecessors, (101), 5 states have call successors, (51), 4 states have call predecessors, (51), 7 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52) [2023-11-19 07:51:08,035 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 400 transitions. [2023-11-19 07:51:08,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-19 07:51:08,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:08,038 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:08,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:51:08,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:51:08,259 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:08,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:08,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1044900056, now seen corresponding path program 1 times [2023-11-19 07:51:08,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:08,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679749491] [2023-11-19 07:51:08,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:08,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:08,300 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:51:08,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1054705799] [2023-11-19 07:51:08,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:08,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:51:08,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:51:08,302 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:51:08,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:51:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:08,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:51:08,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-19 07:51:08,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:51:08,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:08,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679749491] [2023-11-19 07:51:08,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:51:08,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054705799] [2023-11-19 07:51:08,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054705799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:08,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:08,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:51:08,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351116301] [2023-11-19 07:51:08,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:08,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:51:08,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:08,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:51:08,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:51:08,567 INFO L87 Difference]: Start difference. First operand 284 states and 400 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 07:51:08,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:08,844 INFO L93 Difference]: Finished difference Result 804 states and 1098 transitions. [2023-11-19 07:51:08,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:51:08,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 178 [2023-11-19 07:51:08,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:08,851 INFO L225 Difference]: With dead ends: 804 [2023-11-19 07:51:08,851 INFO L226 Difference]: Without dead ends: 523 [2023-11-19 07:51:08,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:51:08,854 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 189 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:08,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 748 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:51:08,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-11-19 07:51:08,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 474. [2023-11-19 07:51:08,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 381 states have (on average 1.31496062992126) internal successors, (501), 383 states have internal predecessors, (501), 72 states have call successors, (72), 20 states have call predecessors, (72), 20 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2023-11-19 07:51:08,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 645 transitions. [2023-11-19 07:51:08,918 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 645 transitions. Word has length 178 [2023-11-19 07:51:08,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:08,919 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 645 transitions. [2023-11-19 07:51:08,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 07:51:08,920 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 645 transitions. [2023-11-19 07:51:08,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-19 07:51:08,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:08,923 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:08,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:51:09,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:51:09,137 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:09,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:09,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1561123498, now seen corresponding path program 1 times [2023-11-19 07:51:09,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:09,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345290770] [2023-11-19 07:51:09,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:09,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:09,167 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:51:09,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [160570647] [2023-11-19 07:51:09,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:09,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:51:09,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:51:09,169 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:51:09,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:51:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:09,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:51:09,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:09,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-19 07:51:09,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:51:09,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:09,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345290770] [2023-11-19 07:51:09,390 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:51:09,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160570647] [2023-11-19 07:51:09,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160570647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:09,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:09,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:51:09,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531177997] [2023-11-19 07:51:09,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:09,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:51:09,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:09,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:51:09,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:51:09,393 INFO L87 Difference]: Start difference. First operand 474 states and 645 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 07:51:09,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:09,623 INFO L93 Difference]: Finished difference Result 938 states and 1263 transitions. [2023-11-19 07:51:09,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:51:09,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 178 [2023-11-19 07:51:09,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:09,629 INFO L225 Difference]: With dead ends: 938 [2023-11-19 07:51:09,630 INFO L226 Difference]: Without dead ends: 467 [2023-11-19 07:51:09,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:51:09,632 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 158 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:09,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 351 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:51:09,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-11-19 07:51:09,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 378. [2023-11-19 07:51:09,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 299 states have (on average 1.2909698996655519) internal successors, (386), 300 states have internal predecessors, (386), 62 states have call successors, (62), 16 states have call predecessors, (62), 16 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-19 07:51:09,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 510 transitions. [2023-11-19 07:51:09,682 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 510 transitions. Word has length 178 [2023-11-19 07:51:09,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:09,683 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 510 transitions. [2023-11-19 07:51:09,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 07:51:09,683 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 510 transitions. [2023-11-19 07:51:09,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 07:51:09,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:09,686 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:09,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:51:09,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 07:51:09,908 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:09,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:09,909 INFO L85 PathProgramCache]: Analyzing trace with hash -748823505, now seen corresponding path program 1 times [2023-11-19 07:51:09,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:09,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000333601] [2023-11-19 07:51:09,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:09,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:09,937 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:51:09,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [121425223] [2023-11-19 07:51:09,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:09,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:51:09,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:51:09,939 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:51:09,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:51:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:10,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:51:10,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:10,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 663 proven. 42 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2023-11-19 07:51:10,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:51:10,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-19 07:51:10,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:10,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000333601] [2023-11-19 07:51:10,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:51:10,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121425223] [2023-11-19 07:51:10,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121425223] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:51:10,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:51:10,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-19 07:51:10,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824077863] [2023-11-19 07:51:10,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:10,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:51:10,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:10,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:51:10,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:51:10,471 INFO L87 Difference]: Start difference. First operand 378 states and 510 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 07:51:10,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:10,739 INFO L93 Difference]: Finished difference Result 669 states and 905 transitions. [2023-11-19 07:51:10,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:51:10,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 179 [2023-11-19 07:51:10,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:10,743 INFO L225 Difference]: With dead ends: 669 [2023-11-19 07:51:10,743 INFO L226 Difference]: Without dead ends: 326 [2023-11-19 07:51:10,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:51:10,745 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 253 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:10,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 249 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:51:10,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-19 07:51:10,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 323. [2023-11-19 07:51:10,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 244 states have (on average 1.2581967213114753) internal successors, (307), 245 states have internal predecessors, (307), 62 states have call successors, (62), 16 states have call predecessors, (62), 16 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-19 07:51:10,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 431 transitions. [2023-11-19 07:51:10,792 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 431 transitions. Word has length 179 [2023-11-19 07:51:10,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:10,793 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 431 transitions. [2023-11-19 07:51:10,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 07:51:10,793 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 431 transitions. [2023-11-19 07:51:10,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-11-19 07:51:10,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:10,796 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:10,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:51:11,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:51:11,004 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:51:11,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:11,004 INFO L85 PathProgramCache]: Analyzing trace with hash -904327376, now seen corresponding path program 1 times [2023-11-19 07:51:11,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:11,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932859481] [2023-11-19 07:51:11,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:11,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:11,038 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:51:11,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [44681668] [2023-11-19 07:51:11,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:11,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:51:11,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:51:11,048 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:51:11,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b34e5bbb-06ae-4f3d-961b-00bb2ea7881d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:51:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:11,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-19 07:51:11,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:13,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 786 proven. 57 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2023-11-19 07:51:13,150 INFO L327 TraceCheckSpWp]: Computing backward predicates...