./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB --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 7dfe522f0a384c779a53f1bd35f55e4b7314ed62dfa7b4a6975b7f74f7995e77 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:59:44,437 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:59:44,541 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:59:44,550 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:59:44,550 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:59:44,582 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:59:44,584 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:59:44,584 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:59:44,585 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:59:44,585 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:59:44,586 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:59:44,586 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:59:44,587 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:59:44,587 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:59:44,587 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:59:44,587 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:59:44,587 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:59:44,587 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:59:44,587 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:59:44,587 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:59:44,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:59:44,587 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:59:44,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:59:44,588 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:59:44,588 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:59:44,588 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:59:44,588 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:59:44,588 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:59:44,588 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:59:44,588 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:59:44,588 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:59:44,588 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:59:44,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:59:44,588 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:59:44,588 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:59:44,589 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:59:44,589 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:59:44,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:59:44,589 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:59:44,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:59:44,590 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:59:44,590 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:59:44,590 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:59:44,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:59:44,591 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:59:44,591 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:59:44,591 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:59:44,591 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:59:44,591 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 7dfe522f0a384c779a53f1bd35f55e4b7314ed62dfa7b4a6975b7f74f7995e77 [2024-11-28 02:59:44,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:59:44,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:59:44,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:59:44,928 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:59:44,928 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:59:44,930 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i [2024-11-28 02:59:47,922 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/data/076359504/25e7c6beb31a4dba9f5f95c32dfcb9ec/FLAG976a26fe5 [2024-11-28 02:59:48,217 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:59:48,218 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i [2024-11-28 02:59:48,227 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/data/076359504/25e7c6beb31a4dba9f5f95c32dfcb9ec/FLAG976a26fe5 [2024-11-28 02:59:48,241 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/data/076359504/25e7c6beb31a4dba9f5f95c32dfcb9ec [2024-11-28 02:59:48,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:59:48,245 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:59:48,246 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:59:48,246 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:59:48,251 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:59:48,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:48" (1/1) ... [2024-11-28 02:59:48,252 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@558d2ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:48, skipping insertion in model container [2024-11-28 02:59:48,253 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:48" (1/1) ... [2024-11-28 02:59:48,274 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:59:48,430 WARN L250 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_d520edd6-679c-49ab-bfac-4f1810068166/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i[919,932] [2024-11-28 02:59:48,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:59:48,543 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:59:48,554 WARN L250 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_d520edd6-679c-49ab-bfac-4f1810068166/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i[919,932] [2024-11-28 02:59:48,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:59:48,626 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:59:48,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:48 WrapperNode [2024-11-28 02:59:48,627 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:59:48,628 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:59:48,629 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:59:48,629 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:59:48,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:48" (1/1) ... [2024-11-28 02:59:48,655 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:48" (1/1) ... [2024-11-28 02:59:48,708 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 231 [2024-11-28 02:59:48,709 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:59:48,709 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:59:48,709 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:59:48,709 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:59:48,721 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:48" (1/1) ... [2024-11-28 02:59:48,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:48" (1/1) ... [2024-11-28 02:59:48,730 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:48" (1/1) ... [2024-11-28 02:59:48,761 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:59:48,762 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:48" (1/1) ... [2024-11-28 02:59:48,762 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:48" (1/1) ... [2024-11-28 02:59:48,775 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:48" (1/1) ... [2024-11-28 02:59:48,777 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:48" (1/1) ... [2024-11-28 02:59:48,780 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:48" (1/1) ... [2024-11-28 02:59:48,784 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:48" (1/1) ... [2024-11-28 02:59:48,787 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:48" (1/1) ... [2024-11-28 02:59:48,793 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:59:48,794 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:59:48,794 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:59:48,794 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:59:48,795 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:48" (1/1) ... [2024-11-28 02:59:48,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:59:48,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:48,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:59:48,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:59:48,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:59:48,858 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:59:48,858 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:59:48,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:59:48,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:59:48,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:59:48,971 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:59:48,973 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:59:49,713 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-28 02:59:49,714 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:59:49,726 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:59:49,729 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:59:49,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:49 BoogieIcfgContainer [2024-11-28 02:59:49,730 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:59:49,732 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:59:49,732 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:59:49,738 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:59:49,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:59:48" (1/3) ... [2024-11-28 02:59:49,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f4ff3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:59:49, skipping insertion in model container [2024-11-28 02:59:49,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:48" (2/3) ... [2024-11-28 02:59:49,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f4ff3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:59:49, skipping insertion in model container [2024-11-28 02:59:49,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:49" (3/3) ... [2024-11-28 02:59:49,743 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i [2024-11-28 02:59:49,759 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:59:49,761 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i that has 2 procedures, 99 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:59:49,833 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:59:49,849 INFO L333 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, 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;@4b16bd8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:59:49,849 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:59:49,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 70 states have (on average 1.457142857142857) internal successors, (102), 71 states have internal predecessors, (102), 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) [2024-11-28 02:59:49,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-28 02:59:49,866 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:59:49,867 INFO L218 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] [2024-11-28 02:59:49,868 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:59:49,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:49,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1342870241, now seen corresponding path program 1 times [2024-11-28 02:59:49,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:49,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614703373] [2024-11-28 02:59:49,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:49,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:50,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-11-28 02:59:50,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:50,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614703373] [2024-11-28 02:59:50,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614703373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:50,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812733219] [2024-11-28 02:59:50,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:50,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:50,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:50,288 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:50,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:59:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:50,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:59:50,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:50,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-11-28 02:59:50,602 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:59:50,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812733219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:50,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:59:50,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 02:59:50,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636083459] [2024-11-28 02:59:50,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:50,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:59:50,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:50,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:59:50,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:59:50,643 INFO L87 Difference]: Start difference. First operand has 99 states, 70 states have (on average 1.457142857142857) internal successors, (102), 71 states have internal predecessors, (102), 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 25.5) internal successors, (51), 2 states have internal predecessors, (51), 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) [2024-11-28 02:59:50,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:59:50,678 INFO L93 Difference]: Finished difference Result 191 states and 328 transitions. [2024-11-28 02:59:50,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:59:50,680 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 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 176 [2024-11-28 02:59:50,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:59:50,690 INFO L225 Difference]: With dead ends: 191 [2024-11-28 02:59:50,691 INFO L226 Difference]: Without dead ends: 95 [2024-11-28 02:59:50,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:59:50,698 INFO L435 NwaCegarLoop]: 147 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, 147 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 [2024-11-28 02:59:50,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:59:50,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-28 02:59:50,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-28 02:59:50,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 67 states have internal predecessors, (95), 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) [2024-11-28 02:59:50,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 147 transitions. [2024-11-28 02:59:50,740 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 147 transitions. Word has length 176 [2024-11-28 02:59:50,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:59:50,740 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 147 transitions. [2024-11-28 02:59:50,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 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) [2024-11-28 02:59:50,741 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 147 transitions. [2024-11-28 02:59:50,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-28 02:59:50,744 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:59:50,744 INFO L218 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] [2024-11-28 02:59:50,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:59:50,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 02:59:50,945 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:59:50,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:50,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1502417511, now seen corresponding path program 1 times [2024-11-28 02:59:50,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:50,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028280353] [2024-11-28 02:59:50,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:50,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:51,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 02:59:51,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:51,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028280353] [2024-11-28 02:59:51,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028280353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:51,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:51,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:59:51,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584843552] [2024-11-28 02:59:51,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:51,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:59:51,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:51,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:59:51,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:59:51,583 INFO L87 Difference]: Start difference. First operand 95 states and 147 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) [2024-11-28 02:59:51,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:59:51,639 INFO L93 Difference]: Finished difference Result 188 states and 293 transitions. [2024-11-28 02:59:51,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:59:51,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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 [2024-11-28 02:59:51,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:59:51,644 INFO L225 Difference]: With dead ends: 188 [2024-11-28 02:59:51,646 INFO L226 Difference]: Without dead ends: 96 [2024-11-28 02:59:51,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:59:51,648 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 0 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:59:51,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 286 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:59:51,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-28 02:59:51,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-28 02:59:51,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 68 states have (on average 1.411764705882353) internal successors, (96), 68 states have internal predecessors, (96), 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) [2024-11-28 02:59:51,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 148 transitions. [2024-11-28 02:59:51,675 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 148 transitions. Word has length 176 [2024-11-28 02:59:51,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:59:51,677 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 148 transitions. [2024-11-28 02:59:51,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) [2024-11-28 02:59:51,677 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 148 transitions. [2024-11-28 02:59:51,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-28 02:59:51,682 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:59:51,682 INFO L218 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] [2024-11-28 02:59:51,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:59:51,683 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:59:51,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:51,683 INFO L85 PathProgramCache]: Analyzing trace with hash 987111451, now seen corresponding path program 1 times [2024-11-28 02:59:51,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:51,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522179131] [2024-11-28 02:59:51,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:51,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:54,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 03:01:54,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:54,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522179131] [2024-11-28 03:01:54,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522179131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:54,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:01:54,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 03:01:54,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439058682] [2024-11-28 03:01:54,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:54,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:01:54,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:54,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:01:54,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:01:54,816 INFO L87 Difference]: Start difference. First operand 96 states and 148 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-28 03:01:58,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:58,269 INFO L93 Difference]: Finished difference Result 425 states and 639 transitions. [2024-11-28 03:01:58,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:01:58,270 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 176 [2024-11-28 03:01:58,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:58,278 INFO L225 Difference]: With dead ends: 425 [2024-11-28 03:01:58,278 INFO L226 Difference]: Without dead ends: 332 [2024-11-28 03:01:58,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2024-11-28 03:01:58,284 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 822 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:58,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 922 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 03:01:58,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-28 03:01:58,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 233. [2024-11-28 03:01:58,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 169 states have (on average 1.4201183431952662) internal successors, (240), 170 states have internal predecessors, (240), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:01:58,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 360 transitions. [2024-11-28 03:01:58,355 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 360 transitions. Word has length 176 [2024-11-28 03:01:58,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:58,356 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 360 transitions. [2024-11-28 03:01:58,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-28 03:01:58,357 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 360 transitions. [2024-11-28 03:01:58,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-28 03:01:58,360 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:58,360 INFO L218 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] [2024-11-28 03:01:58,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:01:58,361 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:01:58,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:58,362 INFO L85 PathProgramCache]: Analyzing trace with hash 594084441, now seen corresponding path program 1 times [2024-11-28 03:01:58,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:58,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634600489] [2024-11-28 03:01:58,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:58,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:58,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 03:01:58,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:58,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634600489] [2024-11-28 03:01:58,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634600489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:58,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:01:58,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:01:58,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80532977] [2024-11-28 03:01:58,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:58,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:01:58,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:58,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:01:58,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:01:58,600 INFO L87 Difference]: Start difference. First operand 233 states and 360 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2024-11-28 03:01:59,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:59,033 INFO L93 Difference]: Finished difference Result 614 states and 945 transitions. [2024-11-28 03:01:59,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:01:59,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 [2024-11-28 03:01:59,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:59,046 INFO L225 Difference]: With dead ends: 614 [2024-11-28 03:01:59,047 INFO L226 Difference]: Without dead ends: 397 [2024-11-28 03:01:59,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:01:59,050 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 415 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:59,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 564 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:01:59,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2024-11-28 03:01:59,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 296. [2024-11-28 03:01:59,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 204 states have (on average 1.3627450980392157) internal successors, (278), 206 states have internal predecessors, (278), 86 states have call successors, (86), 5 states have call predecessors, (86), 5 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-28 03:01:59,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 450 transitions. [2024-11-28 03:01:59,127 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 450 transitions. Word has length 176 [2024-11-28 03:01:59,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:59,128 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 450 transitions. [2024-11-28 03:01:59,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2024-11-28 03:01:59,130 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 450 transitions. [2024-11-28 03:01:59,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-28 03:01:59,135 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:59,136 INFO L218 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] [2024-11-28 03:01:59,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:01:59,136 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:01:59,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:59,137 INFO L85 PathProgramCache]: Analyzing trace with hash -24005799, now seen corresponding path program 1 times [2024-11-28 03:01:59,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:59,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117132061] [2024-11-28 03:01:59,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:59,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:36,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 03:08:36,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:36,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117132061] [2024-11-28 03:08:36,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117132061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:36,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:08:36,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-28 03:08:36,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325002825] [2024-11-28 03:08:36,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:36,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:08:36,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:36,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:08:36,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:08:36,423 INFO L87 Difference]: Start difference. First operand 296 states and 450 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-28 03:08:51,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:51,139 INFO L93 Difference]: Finished difference Result 909 states and 1323 transitions. [2024-11-28 03:08:51,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 03:08:51,140 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 176 [2024-11-28 03:08:51,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:51,148 INFO L225 Difference]: With dead ends: 909 [2024-11-28 03:08:51,148 INFO L226 Difference]: Without dead ends: 629 [2024-11-28 03:08:51,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=330, Invalid=930, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 03:08:51,152 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 1417 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:51,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1417 Valid, 1080 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 03:08:51,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2024-11-28 03:08:51,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 335. [2024-11-28 03:08:51,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 243 states have (on average 1.4156378600823045) internal successors, (344), 245 states have internal predecessors, (344), 86 states have call successors, (86), 5 states have call predecessors, (86), 5 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-28 03:08:51,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 516 transitions. [2024-11-28 03:08:51,211 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 516 transitions. Word has length 176 [2024-11-28 03:08:51,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:51,212 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 516 transitions. [2024-11-28 03:08:51,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-28 03:08:51,212 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 516 transitions. [2024-11-28 03:08:51,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-28 03:08:51,216 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:51,216 INFO L218 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] [2024-11-28 03:08:51,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:08:51,217 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:08:51,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:51,217 INFO L85 PathProgramCache]: Analyzing trace with hash -33956903, now seen corresponding path program 1 times [2024-11-28 03:08:51,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:51,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99235010] [2024-11-28 03:08:51,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:51,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 03:08:51,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:51,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99235010] [2024-11-28 03:08:51,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99235010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:51,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:08:51,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:08:51,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815357029] [2024-11-28 03:08:51,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:51,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:08:51,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:51,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:08:51,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:08:51,543 INFO L87 Difference]: Start difference. First operand 335 states and 516 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2024-11-28 03:08:51,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:51,967 INFO L93 Difference]: Finished difference Result 1024 states and 1567 transitions. [2024-11-28 03:08:51,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:08:51,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 [2024-11-28 03:08:51,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:51,976 INFO L225 Difference]: With dead ends: 1024 [2024-11-28 03:08:51,976 INFO L226 Difference]: Without dead ends: 705 [2024-11-28 03:08:51,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:08:51,979 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 162 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:51,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 540 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:08:51,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2024-11-28 03:08:52,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 589. [2024-11-28 03:08:52,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 442 states have (on average 1.4276018099547512) internal successors, (631), 444 states have internal predecessors, (631), 138 states have call successors, (138), 8 states have call predecessors, (138), 8 states have return successors, (138), 136 states have call predecessors, (138), 138 states have call successors, (138) [2024-11-28 03:08:52,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 907 transitions. [2024-11-28 03:08:52,088 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 907 transitions. Word has length 176 [2024-11-28 03:08:52,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:52,090 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 907 transitions. [2024-11-28 03:08:52,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2024-11-28 03:08:52,091 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 907 transitions. [2024-11-28 03:08:52,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-28 03:08:52,094 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:52,094 INFO L218 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] [2024-11-28 03:08:52,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:08:52,095 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:08:52,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:52,095 INFO L85 PathProgramCache]: Analyzing trace with hash 38033815, now seen corresponding path program 1 times [2024-11-28 03:08:52,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:52,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762197209] [2024-11-28 03:08:52,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:52,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:00,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 03:12:00,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:00,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762197209] [2024-11-28 03:12:00,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762197209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:00,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:00,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 03:12:00,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831552645] [2024-11-28 03:12:00,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:00,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:12:00,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:00,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:12:00,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:12:00,532 INFO L87 Difference]: Start difference. First operand 589 states and 907 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 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) [2024-11-28 03:12:08,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:08,882 INFO L93 Difference]: Finished difference Result 1319 states and 1999 transitions. [2024-11-28 03:12:08,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:12:08,884 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 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 [2024-11-28 03:12:08,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:08,891 INFO L225 Difference]: With dead ends: 1319 [2024-11-28 03:12:08,891 INFO L226 Difference]: Without dead ends: 746 [2024-11-28 03:12:08,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:12:08,894 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 528 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:08,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 1071 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-28 03:12:08,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2024-11-28 03:12:08,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 503. [2024-11-28 03:12:08,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 356 states have (on average 1.3764044943820224) internal successors, (490), 358 states have internal predecessors, (490), 138 states have call successors, (138), 8 states have call predecessors, (138), 8 states have return successors, (138), 136 states have call predecessors, (138), 138 states have call successors, (138) [2024-11-28 03:12:08,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 766 transitions. [2024-11-28 03:12:08,980 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 766 transitions. Word has length 176 [2024-11-28 03:12:08,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:08,981 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 766 transitions. [2024-11-28 03:12:08,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 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) [2024-11-28 03:12:08,981 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 766 transitions. [2024-11-28 03:12:08,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-28 03:12:08,984 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:08,985 INFO L218 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] [2024-11-28 03:12:08,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:12:08,985 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:12:08,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:08,986 INFO L85 PathProgramCache]: Analyzing trace with hash -388602913, now seen corresponding path program 1 times [2024-11-28 03:12:08,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:08,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020566976] [2024-11-28 03:12:08,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:08,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:14:15,729 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-28 03:14:15,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-28 03:14:15,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:14:15,731 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.postprocessInterpolant(NestedInterpolantsBuilder.java:472) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.buildPredicates(NestedInterpolantsBuilder.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:292) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:227) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 58 more [2024-11-28 03:14:15,739 INFO L158 Benchmark]: Toolchain (without parser) took 867493.53ms. Allocated memory was 117.4MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 91.7MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2024-11-28 03:14:15,739 INFO L158 Benchmark]: CDTParser took 0.54ms. Allocated memory is still 117.4MB. Free memory was 75.1MB in the beginning and 75.0MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:14:15,740 INFO L158 Benchmark]: CACSL2BoogieTranslator took 381.62ms. Allocated memory is still 117.4MB. Free memory was 91.7MB in the beginning and 74.6MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:14:15,740 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.25ms. Allocated memory is still 117.4MB. Free memory was 74.6MB in the beginning and 67.7MB in the end (delta: 6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:14:15,740 INFO L158 Benchmark]: Boogie Preprocessor took 83.70ms. Allocated memory is still 117.4MB. Free memory was 67.7MB in the beginning and 55.7MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:14:15,742 INFO L158 Benchmark]: RCFGBuilder took 936.17ms. Allocated memory is still 117.4MB. Free memory was 55.3MB in the beginning and 72.2MB in the end (delta: -16.9MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. [2024-11-28 03:14:15,742 INFO L158 Benchmark]: TraceAbstraction took 866006.09ms. Allocated memory was 117.4MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 71.6MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 999.0MB. Max. memory is 16.1GB. [2024-11-28 03:14:15,745 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54ms. Allocated memory is still 117.4MB. Free memory was 75.1MB in the beginning and 75.0MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 381.62ms. Allocated memory is still 117.4MB. Free memory was 91.7MB in the beginning and 74.6MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.25ms. Allocated memory is still 117.4MB. Free memory was 74.6MB in the beginning and 67.7MB in the end (delta: 6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.70ms. Allocated memory is still 117.4MB. Free memory was 67.7MB in the beginning and 55.7MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 936.17ms. Allocated memory is still 117.4MB. Free memory was 55.3MB in the beginning and 72.2MB in the end (delta: -16.9MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. * TraceAbstraction took 866006.09ms. Allocated memory was 117.4MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 71.6MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 999.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB --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 7dfe522f0a384c779a53f1bd35f55e4b7314ed62dfa7b4a6975b7f74f7995e77 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:14:19,007 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:14:19,179 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-28 03:14:19,190 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:14:19,191 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:14:19,224 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:14:19,225 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:14:19,225 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:14:19,225 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:14:19,225 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:14:19,226 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:14:19,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:14:19,226 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:14:19,228 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:14:19,228 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:14:19,229 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:14:19,229 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:14:19,229 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:14:19,229 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:14:19,229 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:14:19,229 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:14:19,229 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:14:19,230 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:14:19,230 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:14:19,230 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 03:14:19,230 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 03:14:19,230 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:14:19,230 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:14:19,230 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:14:19,230 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:14:19,231 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:14:19,231 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:14:19,231 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:14:19,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:14:19,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:14:19,231 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:14:19,232 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:14:19,232 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:14:19,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:14:19,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:14:19,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:14:19,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:14:19,235 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:14:19,235 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:14:19,235 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 03:14:19,235 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 03:14:19,235 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:14:19,235 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:14:19,236 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:14:19,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:14:19,236 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 7dfe522f0a384c779a53f1bd35f55e4b7314ed62dfa7b4a6975b7f74f7995e77 [2024-11-28 03:14:19,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:14:19,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:14:19,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:14:19,712 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:14:19,714 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:14:19,716 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i [2024-11-28 03:14:23,545 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/data/b3f9c4ebe/905228b0ec6f44a4b56bea0a25175f12/FLAG7b27941a7 [2024-11-28 03:14:23,936 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:14:23,940 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i [2024-11-28 03:14:23,959 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/data/b3f9c4ebe/905228b0ec6f44a4b56bea0a25175f12/FLAG7b27941a7 [2024-11-28 03:14:23,989 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/data/b3f9c4ebe/905228b0ec6f44a4b56bea0a25175f12 [2024-11-28 03:14:23,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:14:23,994 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:14:23,997 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:14:23,997 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:14:24,003 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:14:24,004 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:14:23" (1/1) ... [2024-11-28 03:14:24,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3deb6bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:24, skipping insertion in model container [2024-11-28 03:14:24,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:14:23" (1/1) ... [2024-11-28 03:14:24,048 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:14:24,286 WARN L250 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_d520edd6-679c-49ab-bfac-4f1810068166/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i[919,932] [2024-11-28 03:14:24,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:14:24,478 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:14:24,494 WARN L250 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_d520edd6-679c-49ab-bfac-4f1810068166/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i[919,932] [2024-11-28 03:14:24,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:14:24,622 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:14:24,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:24 WrapperNode [2024-11-28 03:14:24,624 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:14:24,625 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:14:24,625 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:14:24,628 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:14:24,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:24" (1/1) ... [2024-11-28 03:14:24,663 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:24" (1/1) ... [2024-11-28 03:14:24,720 INFO L138 Inliner]: procedures = 27, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 195 [2024-11-28 03:14:24,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:14:24,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:14:24,721 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:14:24,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:14:24,737 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:24" (1/1) ... [2024-11-28 03:14:24,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:24" (1/1) ... [2024-11-28 03:14:24,747 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:24" (1/1) ... [2024-11-28 03:14:24,784 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 03:14:24,788 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:24" (1/1) ... [2024-11-28 03:14:24,788 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:24" (1/1) ... [2024-11-28 03:14:24,812 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:24" (1/1) ... [2024-11-28 03:14:24,818 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:24" (1/1) ... [2024-11-28 03:14:24,831 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:24" (1/1) ... [2024-11-28 03:14:24,834 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:24" (1/1) ... [2024-11-28 03:14:24,840 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:24" (1/1) ... [2024-11-28 03:14:24,848 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:14:24,852 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:14:24,852 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:14:24,852 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:14:24,853 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:24" (1/1) ... [2024-11-28 03:14:24,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:14:24,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:14:24,910 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:14:24,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:14:24,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:14:24,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 03:14:24,960 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:14:24,961 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:14:24,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:14:24,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:14:25,084 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:14:25,087 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:14:27,325 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-28 03:14:27,326 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:14:27,346 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:14:27,348 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:14:27,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:27 BoogieIcfgContainer [2024-11-28 03:14:27,349 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:14:27,352 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:14:27,353 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:14:27,360 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:14:27,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:14:23" (1/3) ... [2024-11-28 03:14:27,362 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53730f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:14:27, skipping insertion in model container [2024-11-28 03:14:27,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:24" (2/3) ... [2024-11-28 03:14:27,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53730f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:14:27, skipping insertion in model container [2024-11-28 03:14:27,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:27" (3/3) ... [2024-11-28 03:14:27,367 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i [2024-11-28 03:14:27,390 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:14:27,393 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i that has 2 procedures, 87 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 03:14:27,478 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:14:27,494 INFO L333 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, 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;@7243ec64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:14:27,494 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:14:27,499 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 59 states have internal predecessors, (84), 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) [2024-11-28 03:14:27,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-28 03:14:27,517 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:14:27,518 INFO L218 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] [2024-11-28 03:14:27,519 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:14:27,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:14:27,525 INFO L85 PathProgramCache]: Analyzing trace with hash 352520966, now seen corresponding path program 1 times [2024-11-28 03:14:27,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:14:27,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355553484] [2024-11-28 03:14:27,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:14:27,539 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 03:14:27,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 03:14:27,542 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 03:14:27,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-28 03:14:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:14:28,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:14:28,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:14:28,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 554 proven. 0 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2024-11-28 03:14:28,173 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:14:28,176 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:14:28,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355553484] [2024-11-28 03:14:28,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355553484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:14:28,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:14:28,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:14:28,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457343669] [2024-11-28 03:14:28,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:14:28,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:14:28,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:14:28,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:14:28,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:14:28,251 INFO L87 Difference]: Start difference. First operand has 87 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 59 states have internal predecessors, (84), 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 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-28 03:14:28,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:14:28,299 INFO L93 Difference]: Finished difference Result 167 states and 292 transitions. [2024-11-28 03:14:28,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:14:28,302 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 172 [2024-11-28 03:14:28,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:14:28,311 INFO L225 Difference]: With dead ends: 167 [2024-11-28 03:14:28,312 INFO L226 Difference]: Without dead ends: 83 [2024-11-28 03:14:28,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:14:28,323 INFO L435 NwaCegarLoop]: 128 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, 128 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 [2024-11-28 03:14:28,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:14:28,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-28 03:14:28,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-28 03:14:28,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 55 states have internal predecessors, (76), 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) [2024-11-28 03:14:28,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 128 transitions. [2024-11-28 03:14:28,380 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 128 transitions. Word has length 172 [2024-11-28 03:14:28,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:14:28,381 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 128 transitions. [2024-11-28 03:14:28,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-28 03:14:28,382 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 128 transitions. [2024-11-28 03:14:28,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-28 03:14:28,386 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:14:28,387 INFO L218 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] [2024-11-28 03:14:28,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-28 03:14:28,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 03:14:28,592 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:14:28,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:14:28,593 INFO L85 PathProgramCache]: Analyzing trace with hash 985214588, now seen corresponding path program 1 times [2024-11-28 03:14:28,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:14:28,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326988971] [2024-11-28 03:14:28,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:14:28,594 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-28 03:14:28,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 03:14:28,598 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-28 03:14:28,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520edd6-679c-49ab-bfac-4f1810068166/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-28 03:14:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:14:29,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 03:14:29,297 INFO L279 TraceCheckSpWp]: Computing forward predicates...