./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/bin/uautomizer-verify-LYvppIcaGC --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 d0cee5b1964cd71f7406ad577c9568bfea84778de80728dfc08113baa4a027fc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:24:44,907 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:24:44,969 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 18:24:44,975 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:24:44,975 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:24:45,001 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:24:45,001 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:24:45,001 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:24:45,002 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:24:45,002 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:24:45,002 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:24:45,002 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:24:45,003 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:24:45,003 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:24:45,003 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:24:45,003 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:24:45,003 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:24:45,003 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 18:24:45,003 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:24:45,003 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 18:24:45,004 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:24:45,004 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:24:45,004 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:24:45,004 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:24:45,004 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 18:24:45,004 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:24:45,004 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:24:45,004 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:24:45,005 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:24:45,005 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:24:45,005 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:24:45,005 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:24:45,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:24:45,005 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:24:45,005 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:24:45,005 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:24:45,005 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:24:45,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:24:45,006 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:24:45,006 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:24:45,006 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:24:45,006 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:24:45,006 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:24:45,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:24:45,006 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:24:45,007 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:24:45,007 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:24:45,007 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:24:45,007 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_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/bin/uautomizer-verify-LYvppIcaGC 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 -> d0cee5b1964cd71f7406ad577c9568bfea84778de80728dfc08113baa4a027fc [2024-11-23 18:24:45,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:24:45,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:24:45,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:24:45,323 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:24:45,324 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:24:45,326 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c [2024-11-23 18:24:48,329 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/bin/uautomizer-verify-LYvppIcaGC/data/703b7dda0/6239b6f9277c4c47aef2b268a0b46dfe/FLAGaf1d310b1 [2024-11-23 18:24:48,635 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:24:48,648 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c [2024-11-23 18:24:48,670 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/bin/uautomizer-verify-LYvppIcaGC/data/703b7dda0/6239b6f9277c4c47aef2b268a0b46dfe/FLAGaf1d310b1 [2024-11-23 18:24:48,690 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/bin/uautomizer-verify-LYvppIcaGC/data/703b7dda0/6239b6f9277c4c47aef2b268a0b46dfe [2024-11-23 18:24:48,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:24:48,694 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:24:48,696 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:24:48,696 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:24:48,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:24:48,702 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:24:48" (1/1) ... [2024-11-23 18:24:48,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74b83743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:48, skipping insertion in model container [2024-11-23 18:24:48,703 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:24:48" (1/1) ... [2024-11-23 18:24:48,733 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:24:48,925 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_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c[6940,6953] [2024-11-23 18:24:48,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:24:48,937 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:24:49,002 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_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c[6940,6953] [2024-11-23 18:24:49,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:24:49,030 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:24:49,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:49 WrapperNode [2024-11-23 18:24:49,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:24:49,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:24:49,034 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:24:49,034 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:24:49,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:49" (1/1) ... [2024-11-23 18:24:49,055 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:49" (1/1) ... [2024-11-23 18:24:49,095 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 249 [2024-11-23 18:24:49,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:24:49,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:24:49,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:24:49,096 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:24:49,114 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:49" (1/1) ... [2024-11-23 18:24:49,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:49" (1/1) ... [2024-11-23 18:24:49,118 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:49" (1/1) ... [2024-11-23 18:24:49,134 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]. [2024-11-23 18:24:49,135 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:49" (1/1) ... [2024-11-23 18:24:49,135 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:49" (1/1) ... [2024-11-23 18:24:49,140 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:49" (1/1) ... [2024-11-23 18:24:49,141 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:49" (1/1) ... [2024-11-23 18:24:49,145 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:49" (1/1) ... [2024-11-23 18:24:49,147 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:49" (1/1) ... [2024-11-23 18:24:49,148 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:49" (1/1) ... [2024-11-23 18:24:49,151 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:24:49,151 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:24:49,151 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:24:49,152 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:24:49,153 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:49" (1/1) ... [2024-11-23 18:24:49,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:24:49,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:49,184 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:24:49,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:24:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:24:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:24:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:24:49,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:24:49,314 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:24:49,316 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:24:49,761 INFO L? ?]: Removed 33 outVars from TransFormulas that were not future-live. [2024-11-23 18:24:49,761 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:24:49,776 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:24:49,776 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 18:24:49,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:24:49 BoogieIcfgContainer [2024-11-23 18:24:49,777 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:24:49,779 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:24:49,780 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:24:49,785 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:24:49,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:24:48" (1/3) ... [2024-11-23 18:24:49,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e50bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:24:49, skipping insertion in model container [2024-11-23 18:24:49,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:49" (2/3) ... [2024-11-23 18:24:49,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e50bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:24:49, skipping insertion in model container [2024-11-23 18:24:49,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:24:49" (3/3) ... [2024-11-23 18:24:49,788 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c [2024-11-23 18:24:49,808 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:24:49,811 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c that has 1 procedures, 69 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 18:24:49,882 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:24:49,899 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;@718a932c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:24:49,899 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 18:24:49,904 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 67 states have (on average 1.7014925373134329) internal successors, (114), 68 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:49,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-23 18:24:49,911 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:49,912 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:49,913 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:49,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:49,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1425545932, now seen corresponding path program 1 times [2024-11-23 18:24:49,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:49,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178937558] [2024-11-23 18:24:49,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:49,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:50,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:24:50,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:50,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178937558] [2024-11-23 18:24:50,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178937558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:50,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:24:50,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:24:50,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094565739] [2024-11-23 18:24:50,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:50,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:24:50,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:50,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:24:50,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:24:50,486 INFO L87 Difference]: Start difference. First operand has 69 states, 67 states have (on average 1.7014925373134329) internal successors, (114), 68 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:50,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:50,576 INFO L93 Difference]: Finished difference Result 115 states and 189 transitions. [2024-11-23 18:24:50,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:24:50,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-23 18:24:50,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:50,586 INFO L225 Difference]: With dead ends: 115 [2024-11-23 18:24:50,586 INFO L226 Difference]: Without dead ends: 65 [2024-11-23 18:24:50,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:24:50,592 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:50,593 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 398 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:24:50,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-23 18:24:50,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-23 18:24:50,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.40625) internal successors, (90), 64 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:50,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 90 transitions. [2024-11-23 18:24:50,637 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 90 transitions. Word has length 25 [2024-11-23 18:24:50,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:50,638 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 90 transitions. [2024-11-23 18:24:50,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:50,638 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 90 transitions. [2024-11-23 18:24:50,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-23 18:24:50,641 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:50,641 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:50,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 18:24:50,642 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:50,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:50,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1477219222, now seen corresponding path program 1 times [2024-11-23 18:24:50,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:50,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717518836] [2024-11-23 18:24:50,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:50,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:50,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:24:50,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:50,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717518836] [2024-11-23 18:24:50,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717518836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:50,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:24:50,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:24:50,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081681511] [2024-11-23 18:24:50,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:50,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:24:50,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:50,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:24:50,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:24:50,852 INFO L87 Difference]: Start difference. First operand 65 states and 90 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:50,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:50,905 INFO L93 Difference]: Finished difference Result 141 states and 210 transitions. [2024-11-23 18:24:50,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:24:50,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-23 18:24:50,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:50,907 INFO L225 Difference]: With dead ends: 141 [2024-11-23 18:24:50,910 INFO L226 Difference]: Without dead ends: 99 [2024-11-23 18:24:50,911 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:24:50,912 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 51 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:50,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 187 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:24:50,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-23 18:24:50,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2024-11-23 18:24:50,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.46875) internal successors, (141), 96 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:50,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 141 transitions. [2024-11-23 18:24:50,929 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 141 transitions. Word has length 41 [2024-11-23 18:24:50,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:50,930 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 141 transitions. [2024-11-23 18:24:50,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:50,930 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 141 transitions. [2024-11-23 18:24:50,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-23 18:24:50,931 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:50,931 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:50,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 18:24:50,931 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:50,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:50,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1000300971, now seen corresponding path program 1 times [2024-11-23 18:24:50,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:50,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227810057] [2024-11-23 18:24:50,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:50,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:51,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:24:51,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:51,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227810057] [2024-11-23 18:24:51,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227810057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:51,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:24:51,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:24:51,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542203491] [2024-11-23 18:24:51,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:51,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:24:51,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:51,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:24:51,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:24:51,196 INFO L87 Difference]: Start difference. First operand 97 states and 141 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:51,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:51,358 INFO L93 Difference]: Finished difference Result 393 states and 613 transitions. [2024-11-23 18:24:51,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:24:51,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-23 18:24:51,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:51,366 INFO L225 Difference]: With dead ends: 393 [2024-11-23 18:24:51,366 INFO L226 Difference]: Without dead ends: 319 [2024-11-23 18:24:51,367 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:24:51,367 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 397 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:51,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 370 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:24:51,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-23 18:24:51,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 169. [2024-11-23 18:24:51,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.5119047619047619) internal successors, (254), 168 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:51,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 254 transitions. [2024-11-23 18:24:51,399 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 254 transitions. Word has length 41 [2024-11-23 18:24:51,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:51,400 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 254 transitions. [2024-11-23 18:24:51,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:51,400 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 254 transitions. [2024-11-23 18:24:51,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-23 18:24:51,401 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:51,401 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:51,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 18:24:51,401 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:51,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:51,402 INFO L85 PathProgramCache]: Analyzing trace with hash 561235574, now seen corresponding path program 1 times [2024-11-23 18:24:51,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:51,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564302766] [2024-11-23 18:24:51,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:51,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:51,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:24:51,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:51,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564302766] [2024-11-23 18:24:51,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564302766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:51,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:24:51,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:24:51,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551220178] [2024-11-23 18:24:51,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:51,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:24:51,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:51,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:24:51,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:24:51,808 INFO L87 Difference]: Start difference. First operand 169 states and 254 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:51,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:51,849 INFO L93 Difference]: Finished difference Result 183 states and 271 transitions. [2024-11-23 18:24:51,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:24:51,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-23 18:24:51,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:51,851 INFO L225 Difference]: With dead ends: 183 [2024-11-23 18:24:51,851 INFO L226 Difference]: Without dead ends: 181 [2024-11-23 18:24:51,852 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:24:51,853 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 0 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:51,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 340 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:24:51,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-23 18:24:51,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-11-23 18:24:51,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.4777777777777779) internal successors, (266), 180 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:51,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 266 transitions. [2024-11-23 18:24:51,874 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 266 transitions. Word has length 42 [2024-11-23 18:24:51,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:51,875 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 266 transitions. [2024-11-23 18:24:51,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:51,875 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 266 transitions. [2024-11-23 18:24:51,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-23 18:24:51,876 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:51,876 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:51,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 18:24:51,877 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:51,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:51,877 INFO L85 PathProgramCache]: Analyzing trace with hash 271012067, now seen corresponding path program 1 times [2024-11-23 18:24:51,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:51,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203036544] [2024-11-23 18:24:51,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:51,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:24:52,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:52,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203036544] [2024-11-23 18:24:52,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203036544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:52,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:24:52,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:24:52,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703680434] [2024-11-23 18:24:52,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:52,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:24:52,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:52,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:24:52,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:24:52,058 INFO L87 Difference]: Start difference. First operand 181 states and 266 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:52,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:52,090 INFO L93 Difference]: Finished difference Result 467 states and 702 transitions. [2024-11-23 18:24:52,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:24:52,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-23 18:24:52,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:52,095 INFO L225 Difference]: With dead ends: 467 [2024-11-23 18:24:52,095 INFO L226 Difference]: Without dead ends: 309 [2024-11-23 18:24:52,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:24:52,099 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 39 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:52,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 149 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:24:52,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-23 18:24:52,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 303. [2024-11-23 18:24:52,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.4768211920529801) internal successors, (446), 302 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:52,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 446 transitions. [2024-11-23 18:24:52,131 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 446 transitions. Word has length 43 [2024-11-23 18:24:52,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:52,136 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 446 transitions. [2024-11-23 18:24:52,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:52,136 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 446 transitions. [2024-11-23 18:24:52,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-23 18:24:52,137 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:52,137 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:52,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 18:24:52,137 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:52,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:52,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1222671217, now seen corresponding path program 1 times [2024-11-23 18:24:52,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:52,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449874202] [2024-11-23 18:24:52,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:52,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:52,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:24:52,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:52,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449874202] [2024-11-23 18:24:52,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449874202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:52,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:24:52,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:24:52,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687188216] [2024-11-23 18:24:52,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:52,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:24:52,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:52,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:24:52,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:24:52,241 INFO L87 Difference]: Start difference. First operand 303 states and 446 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:52,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:52,282 INFO L93 Difference]: Finished difference Result 799 states and 1180 transitions. [2024-11-23 18:24:52,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:24:52,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-23 18:24:52,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:52,289 INFO L225 Difference]: With dead ends: 799 [2024-11-23 18:24:52,289 INFO L226 Difference]: Without dead ends: 519 [2024-11-23 18:24:52,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:24:52,295 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 47 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:52,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 185 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:24:52,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2024-11-23 18:24:52,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 517. [2024-11-23 18:24:52,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 516 states have (on average 1.449612403100775) internal successors, (748), 516 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:52,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 748 transitions. [2024-11-23 18:24:52,349 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 748 transitions. Word has length 44 [2024-11-23 18:24:52,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:52,349 INFO L471 AbstractCegarLoop]: Abstraction has 517 states and 748 transitions. [2024-11-23 18:24:52,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:52,350 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 748 transitions. [2024-11-23 18:24:52,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-23 18:24:52,351 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:52,351 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:52,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 18:24:52,351 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:52,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:52,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1273029565, now seen corresponding path program 1 times [2024-11-23 18:24:52,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:52,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689999413] [2024-11-23 18:24:52,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:52,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:52,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:24:52,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:52,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689999413] [2024-11-23 18:24:52,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689999413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:52,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:24:52,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:24:52,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022005206] [2024-11-23 18:24:52,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:52,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:24:52,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:52,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:24:52,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:24:52,478 INFO L87 Difference]: Start difference. First operand 517 states and 748 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:52,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:52,527 INFO L93 Difference]: Finished difference Result 1004 states and 1466 transitions. [2024-11-23 18:24:52,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:24:52,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-23 18:24:52,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:52,534 INFO L225 Difference]: With dead ends: 1004 [2024-11-23 18:24:52,534 INFO L226 Difference]: Without dead ends: 721 [2024-11-23 18:24:52,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:24:52,537 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 52 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:52,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 197 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:24:52,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2024-11-23 18:24:52,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 719. [2024-11-23 18:24:52,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 718 states have (on average 1.434540389972145) internal successors, (1030), 718 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:52,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1030 transitions. [2024-11-23 18:24:52,599 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1030 transitions. Word has length 45 [2024-11-23 18:24:52,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:52,604 INFO L471 AbstractCegarLoop]: Abstraction has 719 states and 1030 transitions. [2024-11-23 18:24:52,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:52,604 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1030 transitions. [2024-11-23 18:24:52,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-23 18:24:52,607 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:52,607 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:52,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 18:24:52,607 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:52,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:52,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1258504631, now seen corresponding path program 1 times [2024-11-23 18:24:52,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:52,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705338073] [2024-11-23 18:24:52,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:52,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:52,883 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 18:24:52,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:52,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705338073] [2024-11-23 18:24:52,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705338073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:52,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:24:52,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:24:52,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451447723] [2024-11-23 18:24:52,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:52,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:24:52,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:52,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:24:52,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:24:52,887 INFO L87 Difference]: Start difference. First operand 719 states and 1030 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:53,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:53,006 INFO L93 Difference]: Finished difference Result 1659 states and 2418 transitions. [2024-11-23 18:24:53,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:24:53,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-23 18:24:53,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:53,014 INFO L225 Difference]: With dead ends: 1659 [2024-11-23 18:24:53,014 INFO L226 Difference]: Without dead ends: 1305 [2024-11-23 18:24:53,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:24:53,016 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 236 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:53,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 392 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:24:53,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2024-11-23 18:24:53,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1059. [2024-11-23 18:24:53,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 1.438563327032136) internal successors, (1522), 1058 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:53,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1522 transitions. [2024-11-23 18:24:53,082 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1522 transitions. Word has length 63 [2024-11-23 18:24:53,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:53,083 INFO L471 AbstractCegarLoop]: Abstraction has 1059 states and 1522 transitions. [2024-11-23 18:24:53,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:53,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1522 transitions. [2024-11-23 18:24:53,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-23 18:24:53,085 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:53,086 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:53,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 18:24:53,086 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:53,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:53,086 INFO L85 PathProgramCache]: Analyzing trace with hash -26861640, now seen corresponding path program 1 times [2024-11-23 18:24:53,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:53,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747894233] [2024-11-23 18:24:53,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:53,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-23 18:24:53,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:53,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747894233] [2024-11-23 18:24:53,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747894233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:53,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:24:53,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:24:53,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439877734] [2024-11-23 18:24:53,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:53,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:24:53,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:53,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:24:53,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:24:53,295 INFO L87 Difference]: Start difference. First operand 1059 states and 1522 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:53,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:53,434 INFO L93 Difference]: Finished difference Result 1999 states and 2910 transitions. [2024-11-23 18:24:53,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:24:53,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-23 18:24:53,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:53,443 INFO L225 Difference]: With dead ends: 1999 [2024-11-23 18:24:53,443 INFO L226 Difference]: Without dead ends: 1645 [2024-11-23 18:24:53,444 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:24:53,445 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 241 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:53,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 381 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:24:53,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2024-11-23 18:24:53,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1399. [2024-11-23 18:24:53,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1398 states have (on average 1.4406294706723892) internal successors, (2014), 1398 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:53,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 2014 transitions. [2024-11-23 18:24:53,524 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 2014 transitions. Word has length 63 [2024-11-23 18:24:53,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:53,524 INFO L471 AbstractCegarLoop]: Abstraction has 1399 states and 2014 transitions. [2024-11-23 18:24:53,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:53,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 2014 transitions. [2024-11-23 18:24:53,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-23 18:24:53,526 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:53,526 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:53,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 18:24:53,527 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:53,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:53,528 INFO L85 PathProgramCache]: Analyzing trace with hash -618172044, now seen corresponding path program 1 times [2024-11-23 18:24:53,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:53,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406207227] [2024-11-23 18:24:53,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:53,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:53,706 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:24:53,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:53,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406207227] [2024-11-23 18:24:53,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406207227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:53,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:24:53,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:24:53,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273434720] [2024-11-23 18:24:53,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:53,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:24:53,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:53,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:24:53,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:24:53,708 INFO L87 Difference]: Start difference. First operand 1399 states and 2014 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:53,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:53,776 INFO L93 Difference]: Finished difference Result 2775 states and 4004 transitions. [2024-11-23 18:24:53,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:24:53,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-23 18:24:53,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:53,784 INFO L225 Difference]: With dead ends: 2775 [2024-11-23 18:24:53,784 INFO L226 Difference]: Without dead ends: 1401 [2024-11-23 18:24:53,786 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:24:53,790 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 42 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:53,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 185 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:24:53,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2024-11-23 18:24:53,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1399. [2024-11-23 18:24:53,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1398 states have (on average 1.4234620886981402) internal successors, (1990), 1398 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:53,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 1990 transitions. [2024-11-23 18:24:53,862 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 1990 transitions. Word has length 64 [2024-11-23 18:24:53,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:53,862 INFO L471 AbstractCegarLoop]: Abstraction has 1399 states and 1990 transitions. [2024-11-23 18:24:53,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:53,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 1990 transitions. [2024-11-23 18:24:53,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-23 18:24:53,864 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:53,864 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:53,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 18:24:53,865 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:53,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:53,866 INFO L85 PathProgramCache]: Analyzing trace with hash -231923725, now seen corresponding path program 1 times [2024-11-23 18:24:53,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:53,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026539783] [2024-11-23 18:24:53,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:53,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:54,549 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:24:54,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:54,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026539783] [2024-11-23 18:24:54,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026539783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:54,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767638524] [2024-11-23 18:24:54,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:54,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:54,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:54,555 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:54,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:24:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:54,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-23 18:24:54,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:24:55,895 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:24:56,799 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:24:56,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767638524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:24:56,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:24:56,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 25 [2024-11-23 18:24:56,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557458456] [2024-11-23 18:24:56,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:24:56,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-23 18:24:56,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:56,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-23 18:24:56,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2024-11-23 18:24:56,802 INFO L87 Difference]: Start difference. First operand 1399 states and 1990 transitions. Second operand has 25 states, 25 states have (on average 7.24) internal successors, (181), 25 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:25:09,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:25:09,162 INFO L93 Difference]: Finished difference Result 17149 states and 23946 transitions. [2024-11-23 18:25:09,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-11-23 18:25:09,163 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.24) internal successors, (181), 25 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-23 18:25:09,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:25:09,221 INFO L225 Difference]: With dead ends: 17149 [2024-11-23 18:25:09,221 INFO L226 Difference]: Without dead ends: 15775 [2024-11-23 18:25:09,232 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7550 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=3812, Invalid=16780, Unknown=0, NotChecked=0, Total=20592 [2024-11-23 18:25:09,233 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 4712 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4712 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 1846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-23 18:25:09,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4712 Valid, 1452 Invalid, 1846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-23 18:25:09,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15775 states. [2024-11-23 18:25:09,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15775 to 12189. [2024-11-23 18:25:09,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12189 states, 12188 states have (on average 1.3757794552018379) internal successors, (16768), 12188 states have internal predecessors, (16768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:25:09,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12189 states to 12189 states and 16768 transitions. [2024-11-23 18:25:09,833 INFO L78 Accepts]: Start accepts. Automaton has 12189 states and 16768 transitions. Word has length 64 [2024-11-23 18:25:09,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:25:09,833 INFO L471 AbstractCegarLoop]: Abstraction has 12189 states and 16768 transitions. [2024-11-23 18:25:09,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.24) internal successors, (181), 25 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:25:09,834 INFO L276 IsEmpty]: Start isEmpty. Operand 12189 states and 16768 transitions. [2024-11-23 18:25:09,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-23 18:25:09,835 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:25:09,836 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:25:09,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 18:25:10,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-23 18:25:10,040 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:25:10,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:25:10,041 INFO L85 PathProgramCache]: Analyzing trace with hash -812650598, now seen corresponding path program 1 times [2024-11-23 18:25:10,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:25:10,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437059562] [2024-11-23 18:25:10,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:25:10,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:25:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:25:10,160 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 18:25:10,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:25:10,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437059562] [2024-11-23 18:25:10,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437059562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:25:10,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:25:10,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:25:10,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703949388] [2024-11-23 18:25:10,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:25:10,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:25:10,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:25:10,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:25:10,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:25:10,163 INFO L87 Difference]: Start difference. First operand 12189 states and 16768 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:25:10,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:25:10,607 INFO L93 Difference]: Finished difference Result 21604 states and 30003 transitions. [2024-11-23 18:25:10,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:25:10,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-23 18:25:10,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:25:10,679 INFO L225 Difference]: With dead ends: 21604 [2024-11-23 18:25:10,680 INFO L226 Difference]: Without dead ends: 18402 [2024-11-23 18:25:10,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:25:10,686 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 228 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:25:10,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 434 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:25:10,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18402 states. [2024-11-23 18:25:11,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18402 to 15207. [2024-11-23 18:25:11,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15207 states, 15206 states have (on average 1.3736682888333553) internal successors, (20888), 15206 states have internal predecessors, (20888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:25:11,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15207 states to 15207 states and 20888 transitions. [2024-11-23 18:25:11,291 INFO L78 Accepts]: Start accepts. Automaton has 15207 states and 20888 transitions. Word has length 65 [2024-11-23 18:25:11,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:25:11,291 INFO L471 AbstractCegarLoop]: Abstraction has 15207 states and 20888 transitions. [2024-11-23 18:25:11,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:25:11,292 INFO L276 IsEmpty]: Start isEmpty. Operand 15207 states and 20888 transitions. [2024-11-23 18:25:11,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-23 18:25:11,294 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:25:11,295 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:25:11,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 18:25:11,295 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:25:11,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:25:11,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1441709853, now seen corresponding path program 1 times [2024-11-23 18:25:11,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:25:11,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573989730] [2024-11-23 18:25:11,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:25:11,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:25:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:25:11,770 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:25:11,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:25:11,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573989730] [2024-11-23 18:25:11,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573989730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:25:11,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791101561] [2024-11-23 18:25:11,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:25:11,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:25:11,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:25:11,773 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:25:11,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df902ec-e83d-4f9f-b7ca-1ec9d4e451a9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 18:25:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:25:11,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-23 18:25:11,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:25:13,136 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:25:13,136 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:25:14,746 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:25:14,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791101561] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:25:14,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:25:14,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-23 18:25:14,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186869109] [2024-11-23 18:25:14,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:25:14,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-23 18:25:14,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:25:14,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-23 18:25:14,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-11-23 18:25:14,750 INFO L87 Difference]: Start difference. First operand 15207 states and 20888 transitions. Second operand has 32 states, 32 states have (on average 5.78125) internal successors, (185), 32 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:26:12,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:26:12,162 INFO L93 Difference]: Finished difference Result 655304 states and 923146 transitions. [2024-11-23 18:26:12,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 570 states. [2024-11-23 18:26:12,164 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.78125) internal successors, (185), 32 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-23 18:26:12,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:26:13,367 INFO L225 Difference]: With dead ends: 655304 [2024-11-23 18:26:13,367 INFO L226 Difference]: Without dead ends: 640124 [2024-11-23 18:26:13,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 598 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173613 ImplicationChecksByTransitivity, 40.9s TimeCoverageRelationStatistics Valid=34069, Invalid=325331, Unknown=0, NotChecked=0, Total=359400 [2024-11-23 18:26:13,759 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 11022 mSDsluCounter, 4538 mSDsCounter, 0 mSdLazyCounter, 6005 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11022 SdHoareTripleChecker+Valid, 4715 SdHoareTripleChecker+Invalid, 6301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 6005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:26:13,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11022 Valid, 4715 Invalid, 6301 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [296 Valid, 6005 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-23 18:26:14,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640124 states. [2024-11-23 18:26:22,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640124 to 143844.