./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-58.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/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_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-58.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/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_aef1ae13-bfe9-4ca1-923b-76ead590af00/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 13108a5c3bacc5ce6e958a5e44015745c2ee93daeeb0571bc9f62449e98a2b62 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:46:11,994 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:46:12,122 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:46:12,137 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:46:12,138 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:46:12,181 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:46:12,182 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:46:12,183 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:46:12,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:46:12,189 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:46:12,191 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:46:12,191 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:46:12,192 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:46:12,193 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:46:12,194 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:46:12,194 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:46:12,195 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:46:12,195 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:46:12,196 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:46:12,196 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:46:12,197 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:46:12,197 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:46:12,198 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:46:12,198 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:46:12,199 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:46:12,200 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:46:12,200 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:46:12,201 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:46:12,201 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:12,202 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:46:12,203 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:46:12,203 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:46:12,204 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:46:12,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:46:12,204 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:46:12,205 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:46:12,205 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:46:12,205 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:46:12,205 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:46:12,206 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_aef1ae13-bfe9-4ca1-923b-76ead590af00/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13108a5c3bacc5ce6e958a5e44015745c2ee93daeeb0571bc9f62449e98a2b62 [2023-11-19 07:46:12,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:46:12,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:46:12,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:46:12,572 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:46:12,573 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:46:12,574 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-58.i [2023-11-19 07:46:15,787 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:46:16,158 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:46:16,159 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-58.i [2023-11-19 07:46:16,178 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/data/fe85b015c/385313e6f23e4ba79b9e9739199ad937/FLAG335641591 [2023-11-19 07:46:16,193 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/data/fe85b015c/385313e6f23e4ba79b9e9739199ad937 [2023-11-19 07:46:16,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:46:16,199 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:46:16,200 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:16,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:46:16,206 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:46:16,207 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:16" (1/1) ... [2023-11-19 07:46:16,208 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74d3c9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:16, skipping insertion in model container [2023-11-19 07:46:16,209 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:16" (1/1) ... [2023-11-19 07:46:16,249 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:46:16,427 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_aef1ae13-bfe9-4ca1-923b-76ead590af00/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-58.i[919,932] [2023-11-19 07:46:16,516 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:16,530 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:46:16,546 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_aef1ae13-bfe9-4ca1-923b-76ead590af00/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-58.i[919,932] [2023-11-19 07:46:16,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:16,613 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:46:16,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:16 WrapperNode [2023-11-19 07:46:16,614 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:16,615 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:16,615 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:46:16,615 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:46:16,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:16" (1/1) ... [2023-11-19 07:46:16,652 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:16" (1/1) ... [2023-11-19 07:46:16,711 INFO L138 Inliner]: procedures = 26, calls = 56, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 268 [2023-11-19 07:46:16,712 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:16,713 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:46:16,713 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:46:16,713 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:46:16,723 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:16" (1/1) ... [2023-11-19 07:46:16,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:16" (1/1) ... [2023-11-19 07:46:16,729 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:16" (1/1) ... [2023-11-19 07:46:16,729 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:16" (1/1) ... [2023-11-19 07:46:16,744 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:16" (1/1) ... [2023-11-19 07:46:16,749 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:16" (1/1) ... [2023-11-19 07:46:16,753 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:16" (1/1) ... [2023-11-19 07:46:16,756 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:16" (1/1) ... [2023-11-19 07:46:16,762 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:46:16,763 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:46:16,763 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:46:16,763 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:46:16,764 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:16" (1/1) ... [2023-11-19 07:46:16,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:16,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:16,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:16,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:46:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:46:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:46:16,858 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:46:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:46:16,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:46:16,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:46:17,013 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:46:17,017 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:46:17,543 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:46:17,556 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:46:17,557 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:46:17,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:17 BoogieIcfgContainer [2023-11-19 07:46:17,569 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:46:17,573 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:46:17,575 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:46:17,579 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:46:17,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:46:16" (1/3) ... [2023-11-19 07:46:17,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43796ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:17, skipping insertion in model container [2023-11-19 07:46:17,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:16" (2/3) ... [2023-11-19 07:46:17,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43796ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:17, skipping insertion in model container [2023-11-19 07:46:17,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:17" (3/3) ... [2023-11-19 07:46:17,584 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-cn_file-58.i [2023-11-19 07:46:17,602 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:46:17,603 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:46:17,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:46:17,678 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;@27177806, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:46:17,678 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:46:17,683 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 69 states have (on average 1.463768115942029) internal successors, (101), 70 states have internal predecessors, (101), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-19 07:46:17,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-11-19 07:46:17,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:17,708 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:17,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:17,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:17,715 INFO L85 PathProgramCache]: Analyzing trace with hash -2142487316, now seen corresponding path program 1 times [2023-11-19 07:46:17,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:17,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433058195] [2023-11-19 07:46:17,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:17,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:18,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:18,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433058195] [2023-11-19 07:46:18,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:46:18,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015098867] [2023-11-19 07:46:18,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:18,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:18,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:18,244 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:18,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:46:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:18,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:46:18,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:18,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2023-11-19 07:46:18,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:18,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015098867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:18,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:18,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:46:18,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686768047] [2023-11-19 07:46:18,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:18,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:46:18,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:18,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:46:18,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:46:18,793 INFO L87 Difference]: Start difference. First operand has 115 states, 69 states have (on average 1.463768115942029) internal successors, (101), 70 states have internal predecessors, (101), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 2 states have call successors, (43) [2023-11-19 07:46:18,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:18,844 INFO L93 Difference]: Finished difference Result 223 states and 411 transitions. [2023-11-19 07:46:18,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:46:18,846 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 2 states have call successors, (43) Word has length 264 [2023-11-19 07:46:18,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:18,860 INFO L225 Difference]: With dead ends: 223 [2023-11-19 07:46:18,860 INFO L226 Difference]: Without dead ends: 111 [2023-11-19 07:46:18,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 263 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 07:46:18,877 INFO L413 NwaCegarLoop]: 180 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, 180 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 07:46:18,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:46:18,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-19 07:46:18,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2023-11-19 07:46:18,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 66 states have (on average 1.4242424242424243) internal successors, (94), 66 states have internal predecessors, (94), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-19 07:46:18,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 180 transitions. [2023-11-19 07:46:18,940 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 180 transitions. Word has length 264 [2023-11-19 07:46:18,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:18,941 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 180 transitions. [2023-11-19 07:46:18,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 2 states have call successors, (43) [2023-11-19 07:46:18,941 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 180 transitions. [2023-11-19 07:46:18,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-11-19 07:46:18,951 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:18,951 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:18,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:19,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:19,173 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:19,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:19,174 INFO L85 PathProgramCache]: Analyzing trace with hash 883477874, now seen corresponding path program 1 times [2023-11-19 07:46:19,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:19,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836765304] [2023-11-19 07:46:19,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:19,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:19,252 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:19,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [249367739] [2023-11-19 07:46:19,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:19,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:19,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:19,255 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:19,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:46:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:19,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:46:19,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1542 proven. 36 refuted. 0 times theorem prover too weak. 2034 trivial. 0 not checked. [2023-11-19 07:46:19,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:46:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 90 proven. 36 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2023-11-19 07:46:20,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:20,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836765304] [2023-11-19 07:46:20,148 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:20,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249367739] [2023-11-19 07:46:20,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249367739] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:46:20,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:46:20,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-19 07:46:20,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972329562] [2023-11-19 07:46:20,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:46:20,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:46:20,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:20,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:46:20,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:46:20,154 INFO L87 Difference]: Start difference. First operand 111 states and 180 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2023-11-19 07:46:20,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:20,632 INFO L93 Difference]: Finished difference Result 227 states and 364 transitions. [2023-11-19 07:46:20,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:46:20,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 264 [2023-11-19 07:46:20,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:20,638 INFO L225 Difference]: With dead ends: 227 [2023-11-19 07:46:20,638 INFO L226 Difference]: Without dead ends: 119 [2023-11-19 07:46:20,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 520 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:46:20,641 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 104 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:20,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 279 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:46:20,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-19 07:46:20,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2023-11-19 07:46:20,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 69 states have (on average 1.3768115942028984) internal successors, (95), 69 states have internal predecessors, (95), 43 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-19 07:46:20,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 181 transitions. [2023-11-19 07:46:20,703 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 181 transitions. Word has length 264 [2023-11-19 07:46:20,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:20,706 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 181 transitions. [2023-11-19 07:46:20,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2023-11-19 07:46:20,707 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 181 transitions. [2023-11-19 07:46:20,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-11-19 07:46:20,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:20,719 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:20,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:20,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:20,935 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:20,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:20,936 INFO L85 PathProgramCache]: Analyzing trace with hash 653281148, now seen corresponding path program 1 times [2023-11-19 07:46:20,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:20,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688090227] [2023-11-19 07:46:20,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:20,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:21,037 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:21,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411793931] [2023-11-19 07:46:21,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:21,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:21,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:21,052 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:21,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:46:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:21,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:46:21,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:21,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1716 proven. 45 refuted. 0 times theorem prover too weak. 1851 trivial. 0 not checked. [2023-11-19 07:46:21,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:46:21,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 81 proven. 45 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2023-11-19 07:46:21,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:21,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688090227] [2023-11-19 07:46:21,861 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:21,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411793931] [2023-11-19 07:46:21,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411793931] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:46:21,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:46:21,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-19 07:46:21,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916523057] [2023-11-19 07:46:21,863 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:46:21,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:46:21,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:21,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:46:21,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:46:21,871 INFO L87 Difference]: Start difference. First operand 115 states and 181 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 2 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2023-11-19 07:46:23,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:23,002 INFO L93 Difference]: Finished difference Result 481 states and 742 transitions. [2023-11-19 07:46:23,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-19 07:46:23,003 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 2 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 266 [2023-11-19 07:46:23,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:23,017 INFO L225 Difference]: With dead ends: 481 [2023-11-19 07:46:23,017 INFO L226 Difference]: Without dead ends: 369 [2023-11-19 07:46:23,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 524 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=496, Unknown=0, NotChecked=0, Total=702 [2023-11-19 07:46:23,023 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 307 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:23,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 821 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:46:23,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-11-19 07:46:23,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 233. [2023-11-19 07:46:23,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 140 states have (on average 1.35) internal successors, (189), 140 states have internal predecessors, (189), 86 states have call successors, (86), 6 states have call predecessors, (86), 6 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-19 07:46:23,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 361 transitions. [2023-11-19 07:46:23,120 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 361 transitions. Word has length 266 [2023-11-19 07:46:23,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:23,121 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 361 transitions. [2023-11-19 07:46:23,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 2 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2023-11-19 07:46:23,122 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 361 transitions. [2023-11-19 07:46:23,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-11-19 07:46:23,127 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:23,127 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:23,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:23,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 07:46:23,335 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:23,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:23,336 INFO L85 PathProgramCache]: Analyzing trace with hash 710539450, now seen corresponding path program 1 times [2023-11-19 07:46:23,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:23,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039858770] [2023-11-19 07:46:23,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:23,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:23,387 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:23,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710013868] [2023-11-19 07:46:23,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:23,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:23,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:23,389 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:23,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:46:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:23,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:46:23,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:23,732 WARN L876 $PredicateComparison]: unable to prove that (exists ((v_z_5 Int) (v_z_4 Int)) (and (<= (+ (mod c_~var_1_27~0 4294967296) 1) (mod (div v_z_5 v_z_4) 4294967296)) (<= v_z_5 4294967295) (<= 0 v_z_5) (<= 0 v_z_4))) is different from true [2023-11-19 07:46:23,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2023-11-19 07:46:23,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:23,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:23,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039858770] [2023-11-19 07:46:23,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:23,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710013868] [2023-11-19 07:46:23,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710013868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:23,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:23,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:23,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342902353] [2023-11-19 07:46:23,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:23,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:23,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:23,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:23,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=2, Unknown=1, NotChecked=0, Total=6 [2023-11-19 07:46:23,816 INFO L87 Difference]: Start difference. First operand 233 states and 361 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-11-19 07:46:23,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:23,856 INFO L93 Difference]: Finished difference Result 467 states and 725 transitions. [2023-11-19 07:46:23,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:23,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 266 [2023-11-19 07:46:23,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:23,861 INFO L225 Difference]: With dead ends: 467 [2023-11-19 07:46:23,862 INFO L226 Difference]: Without dead ends: 237 [2023-11-19 07:46:23,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=2, Unknown=1, NotChecked=0, Total=6 [2023-11-19 07:46:23,870 INFO L413 NwaCegarLoop]: 177 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, 177 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 178 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:23,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 177 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 178 Unchecked, 0.0s Time] [2023-11-19 07:46:23,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-11-19 07:46:23,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2023-11-19 07:46:23,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 144 states have (on average 1.3402777777777777) internal successors, (193), 144 states have internal predecessors, (193), 86 states have call successors, (86), 6 states have call predecessors, (86), 6 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-19 07:46:23,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 365 transitions. [2023-11-19 07:46:23,945 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 365 transitions. Word has length 266 [2023-11-19 07:46:23,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:23,946 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 365 transitions. [2023-11-19 07:46:23,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-11-19 07:46:23,947 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 365 transitions. [2023-11-19 07:46:23,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-11-19 07:46:23,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:23,954 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:23,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:24,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:24,167 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:24,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:24,167 INFO L85 PathProgramCache]: Analyzing trace with hash 68131216, now seen corresponding path program 1 times [2023-11-19 07:46:24,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:24,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235099611] [2023-11-19 07:46:24,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:24,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:24,212 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:24,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1122486722] [2023-11-19 07:46:24,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:24,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:24,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:24,214 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:24,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:46:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:24,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:46:24,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:26,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2023-11-19 07:46:26,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:26,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:26,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235099611] [2023-11-19 07:46:26,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:26,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122486722] [2023-11-19 07:46:26,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122486722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:26,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:26,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:46:26,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721251961] [2023-11-19 07:46:26,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:26,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:46:26,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:26,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:46:26,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:26,994 INFO L87 Difference]: Start difference. First operand 237 states and 365 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-11-19 07:46:31,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:46:34,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:46:37,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:46:40,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:46:42,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:46:45,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:46:46,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:46,524 INFO L93 Difference]: Finished difference Result 721 states and 1095 transitions. [2023-11-19 07:46:46,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:46:46,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 267 [2023-11-19 07:46:46,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:46,531 INFO L225 Difference]: With dead ends: 721 [2023-11-19 07:46:46,531 INFO L226 Difference]: Without dead ends: 487 [2023-11-19 07:46:46,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:46:46,533 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 184 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 97 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:46,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 811 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 203 Invalid, 3 Unknown, 0 Unchecked, 19.1s Time] [2023-11-19 07:46:46,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-11-19 07:46:46,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 465. [2023-11-19 07:46:46,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 266 states have (on average 1.2593984962406015) internal successors, (335), 270 states have internal predecessors, (335), 186 states have call successors, (186), 12 states have call predecessors, (186), 12 states have return successors, (186), 182 states have call predecessors, (186), 186 states have call successors, (186) [2023-11-19 07:46:46,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 707 transitions. [2023-11-19 07:46:46,643 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 707 transitions. Word has length 267 [2023-11-19 07:46:46,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:46,644 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 707 transitions. [2023-11-19 07:46:46,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-11-19 07:46:46,645 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 707 transitions. [2023-11-19 07:46:46,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-11-19 07:46:46,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:46,650 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:46,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-19 07:46:46,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:46,856 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:46,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:46,857 INFO L85 PathProgramCache]: Analyzing trace with hash 326296654, now seen corresponding path program 1 times [2023-11-19 07:46:46,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:46,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308062710] [2023-11-19 07:46:46,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:46,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:46,919 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:46,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1420750278] [2023-11-19 07:46:46,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:46,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:46,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:46,921 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:46,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef1ae13-bfe9-4ca1-923b-76ead590af00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:46:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:47,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-19 07:46:47,183 INFO L285 TraceCheckSpWp]: Computing forward predicates...