./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 22:53:35,680 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 22:53:35,783 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 22:53:35,788 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 22:53:35,789 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 22:53:35,816 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 22:53:35,817 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 22:53:35,818 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 22:53:35,818 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 22:53:35,819 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 22:53:35,819 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 22:53:35,820 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 22:53:35,820 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 22:53:35,821 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 22:53:35,821 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 22:53:35,821 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 22:53:35,821 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 22:53:35,822 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 22:53:35,822 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 22:53:35,822 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 22:53:35,823 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 22:53:35,826 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 22:53:35,827 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 22:53:35,827 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 22:53:35,827 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 22:53:35,828 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 22:53:35,828 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 22:53:35,828 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 22:53:35,828 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 22:53:35,829 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 22:53:35,829 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 22:53:35,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 22:53:35,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 22:53:35,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 22:53:35,832 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 22:53:35,833 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 22:53:35,833 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 22:53:35,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 22:53:35,833 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 22:53:35,833 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 22:53:35,834 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 22:53:35,836 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 22:53:35,836 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 [2024-11-16 22:53:36,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 22:53:36,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 22:53:36,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 22:53:36,154 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 22:53:36,155 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 22:53:36,156 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2024-11-16 22:53:37,639 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 22:53:37,966 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 22:53:37,968 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2024-11-16 22:53:37,988 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77eda61a8/4f561650f1da4ce7835b46abb76eedaf/FLAGe1ac8cd04 [2024-11-16 22:53:38,001 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77eda61a8/4f561650f1da4ce7835b46abb76eedaf [2024-11-16 22:53:38,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 22:53:38,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 22:53:38,007 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 22:53:38,007 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 22:53:38,014 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 22:53:38,014 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:53:38" (1/1) ... [2024-11-16 22:53:38,015 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ac00dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:38, skipping insertion in model container [2024-11-16 22:53:38,015 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:53:38" (1/1) ... [2024-11-16 22:53:38,079 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 22:53:38,550 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2024-11-16 22:53:38,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 22:53:38,818 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 22:53:38,852 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2024-11-16 22:53:39,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 22:53:39,091 INFO L204 MainTranslator]: Completed translation [2024-11-16 22:53:39,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:39 WrapperNode [2024-11-16 22:53:39,095 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 22:53:39,096 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 22:53:39,096 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 22:53:39,096 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 22:53:39,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:39" (1/1) ... [2024-11-16 22:53:39,153 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:39" (1/1) ... [2024-11-16 22:53:39,269 INFO L138 Inliner]: procedures = 177, calls = 557, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3490 [2024-11-16 22:53:39,270 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 22:53:39,271 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 22:53:39,271 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 22:53:39,271 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 22:53:39,282 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:39" (1/1) ... [2024-11-16 22:53:39,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:39" (1/1) ... [2024-11-16 22:53:39,307 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:39" (1/1) ... [2024-11-16 22:53:39,487 INFO L175 MemorySlicer]: Split 528 memory accesses to 3 slices as follows [2, 106, 420]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 94 writes are split as follows [0, 4, 90]. [2024-11-16 22:53:39,488 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:39" (1/1) ... [2024-11-16 22:53:39,488 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:39" (1/1) ... [2024-11-16 22:53:39,560 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:39" (1/1) ... [2024-11-16 22:53:39,567 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:39" (1/1) ... [2024-11-16 22:53:39,582 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:39" (1/1) ... [2024-11-16 22:53:39,594 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:39" (1/1) ... [2024-11-16 22:53:39,610 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 22:53:39,611 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 22:53:39,612 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 22:53:39,612 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 22:53:39,614 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:39" (1/1) ... [2024-11-16 22:53:39,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 22:53:39,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:53:39,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 22:53:39,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 22:53:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-11-16 22:53:39,707 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-11-16 22:53:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 22:53:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 22:53:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 22:53:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 22:53:39,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 22:53:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 22:53:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 22:53:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 22:53:39,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-16 22:53:39,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-16 22:53:39,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-16 22:53:39,708 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-16 22:53:39,708 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-16 22:53:39,708 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-16 22:53:39,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 22:53:39,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 22:53:39,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-16 22:53:39,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-16 22:53:39,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-16 22:53:39,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 22:53:39,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-16 22:53:39,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-16 22:53:39,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-16 22:53:39,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 22:53:39,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 22:53:39,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 22:53:39,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 22:53:39,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 22:53:39,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 22:53:40,036 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 22:53:40,039 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 22:53:42,676 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2024-11-16 22:53:42,932 INFO L? ?]: Removed 806 outVars from TransFormulas that were not future-live. [2024-11-16 22:53:42,932 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 22:53:43,063 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 22:53:43,064 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-16 22:53:43,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 10:53:43 BoogieIcfgContainer [2024-11-16 22:53:43,065 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 22:53:43,067 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 22:53:43,067 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 22:53:43,070 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 22:53:43,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:53:38" (1/3) ... [2024-11-16 22:53:43,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f117575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:53:43, skipping insertion in model container [2024-11-16 22:53:43,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:39" (2/3) ... [2024-11-16 22:53:43,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f117575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:53:43, skipping insertion in model container [2024-11-16 22:53:43,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 10:53:43" (3/3) ... [2024-11-16 22:53:43,073 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test10-2.i [2024-11-16 22:53:43,091 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 22:53:43,091 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 22:53:43,188 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 22:53:43,194 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;@60e5ddf9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 22:53:43,194 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 22:53:43,202 INFO L276 IsEmpty]: Start isEmpty. Operand has 1077 states, 1058 states have (on average 1.6209829867674859) internal successors, (1715), 1063 states have internal predecessors, (1715), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-16 22:53:43,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-16 22:53:43,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:53:43,213 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:53:43,214 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:53:43,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:53:43,220 INFO L85 PathProgramCache]: Analyzing trace with hash -451858196, now seen corresponding path program 1 times [2024-11-16 22:53:43,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:53:43,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509773434] [2024-11-16 22:53:43,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:53:43,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:53:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:43,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:53:43,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:53:43,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509773434] [2024-11-16 22:53:43,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509773434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:53:43,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:53:43,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 22:53:43,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885127017] [2024-11-16 22:53:43,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:53:43,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 22:53:43,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:53:43,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 22:53:43,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 22:53:43,469 INFO L87 Difference]: Start difference. First operand has 1077 states, 1058 states have (on average 1.6209829867674859) internal successors, (1715), 1063 states have internal predecessors, (1715), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:53:43,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:53:43,787 INFO L93 Difference]: Finished difference Result 2152 states and 3492 transitions. [2024-11-16 22:53:43,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 22:53:43,791 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-16 22:53:43,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:53:43,810 INFO L225 Difference]: With dead ends: 2152 [2024-11-16 22:53:43,810 INFO L226 Difference]: Without dead ends: 1038 [2024-11-16 22:53:43,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 22:53:43,820 INFO L432 NwaCegarLoop]: 1454 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 22:53:43,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1454 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 22:53:43,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2024-11-16 22:53:43,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1038. [2024-11-16 22:53:43,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 1020 states have (on average 1.4666666666666666) internal successors, (1496), 1025 states have internal predecessors, (1496), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 22:53:43,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1523 transitions. [2024-11-16 22:53:43,926 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1523 transitions. Word has length 13 [2024-11-16 22:53:43,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:53:43,926 INFO L471 AbstractCegarLoop]: Abstraction has 1038 states and 1523 transitions. [2024-11-16 22:53:43,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:53:43,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1523 transitions. [2024-11-16 22:53:43,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 22:53:43,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:53:43,934 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:53:43,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 22:53:43,934 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:53:43,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:53:43,935 INFO L85 PathProgramCache]: Analyzing trace with hash -142503714, now seen corresponding path program 1 times [2024-11-16 22:53:43,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:53:43,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360582899] [2024-11-16 22:53:43,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:53:43,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:53:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:53:44,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:53:44,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360582899] [2024-11-16 22:53:44,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360582899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:53:44,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:53:44,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 22:53:44,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512579974] [2024-11-16 22:53:44,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:53:44,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:53:44,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:53:44,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:53:44,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:53:44,432 INFO L87 Difference]: Start difference. First operand 1038 states and 1523 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:53:44,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:53:44,965 INFO L93 Difference]: Finished difference Result 2070 states and 3040 transitions. [2024-11-16 22:53:44,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 22:53:44,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 22:53:44,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:53:44,973 INFO L225 Difference]: With dead ends: 2070 [2024-11-16 22:53:44,974 INFO L226 Difference]: Without dead ends: 1428 [2024-11-16 22:53:44,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 22:53:44,977 INFO L432 NwaCegarLoop]: 1440 mSDtfsCounter, 552 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 4213 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 22:53:44,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 4213 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 22:53:44,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2024-11-16 22:53:45,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1040. [2024-11-16 22:53:45,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 1022 states have (on average 1.4657534246575343) internal successors, (1498), 1027 states have internal predecessors, (1498), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 22:53:45,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1525 transitions. [2024-11-16 22:53:45,052 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1525 transitions. Word has length 69 [2024-11-16 22:53:45,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:53:45,053 INFO L471 AbstractCegarLoop]: Abstraction has 1040 states and 1525 transitions. [2024-11-16 22:53:45,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:53:45,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1525 transitions. [2024-11-16 22:53:45,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-16 22:53:45,059 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:53:45,060 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:53:45,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 22:53:45,060 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:53:45,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:53:45,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1291059539, now seen corresponding path program 1 times [2024-11-16 22:53:45,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:53:45,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458602023] [2024-11-16 22:53:45,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:53:45,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:53:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:45,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:53:45,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:53:45,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458602023] [2024-11-16 22:53:45,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458602023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:53:45,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:53:45,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 22:53:45,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318004975] [2024-11-16 22:53:45,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:53:45,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 22:53:45,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:53:45,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 22:53:45,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 22:53:45,730 INFO L87 Difference]: Start difference. First operand 1040 states and 1525 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:53:46,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:53:46,394 INFO L93 Difference]: Finished difference Result 2464 states and 3609 transitions. [2024-11-16 22:53:46,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 22:53:46,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2024-11-16 22:53:46,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:53:46,402 INFO L225 Difference]: With dead ends: 2464 [2024-11-16 22:53:46,403 INFO L226 Difference]: Without dead ends: 1428 [2024-11-16 22:53:46,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-16 22:53:46,407 INFO L432 NwaCegarLoop]: 1398 mSDtfsCounter, 550 mSDsluCounter, 4569 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 5967 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 22:53:46,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 5967 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 22:53:46,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2024-11-16 22:53:46,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1043. [2024-11-16 22:53:46,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1025 states have (on average 1.464390243902439) internal successors, (1501), 1030 states have internal predecessors, (1501), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 22:53:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1528 transitions. [2024-11-16 22:53:46,441 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1528 transitions. Word has length 147 [2024-11-16 22:53:46,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:53:46,442 INFO L471 AbstractCegarLoop]: Abstraction has 1043 states and 1528 transitions. [2024-11-16 22:53:46,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:53:46,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1528 transitions. [2024-11-16 22:53:46,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-16 22:53:46,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:53:46,450 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:53:46,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 22:53:46,450 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:53:46,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:53:46,452 INFO L85 PathProgramCache]: Analyzing trace with hash 457424886, now seen corresponding path program 1 times [2024-11-16 22:53:46,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:53:46,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767557219] [2024-11-16 22:53:46,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:53:46,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:53:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:46,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:53:46,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:53:46,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767557219] [2024-11-16 22:53:46,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767557219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:53:46,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:53:46,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 22:53:46,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392035744] [2024-11-16 22:53:46,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:53:46,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:53:46,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:53:46,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:53:46,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:53:46,818 INFO L87 Difference]: Start difference. First operand 1043 states and 1528 transitions. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:53:47,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:53:47,164 INFO L93 Difference]: Finished difference Result 2037 states and 2983 transitions. [2024-11-16 22:53:47,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 22:53:47,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2024-11-16 22:53:47,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:53:47,171 INFO L225 Difference]: With dead ends: 2037 [2024-11-16 22:53:47,172 INFO L226 Difference]: Without dead ends: 1001 [2024-11-16 22:53:47,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 22:53:47,177 INFO L432 NwaCegarLoop]: 1310 mSDtfsCounter, 30 mSDsluCounter, 2600 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3910 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 22:53:47,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3910 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 22:53:47,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2024-11-16 22:53:47,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 1001. [2024-11-16 22:53:47,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 983 states have (on average 1.4486266531027467) internal successors, (1424), 988 states have internal predecessors, (1424), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 22:53:47,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1451 transitions. [2024-11-16 22:53:47,204 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1451 transitions. Word has length 219 [2024-11-16 22:53:47,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:53:47,206 INFO L471 AbstractCegarLoop]: Abstraction has 1001 states and 1451 transitions. [2024-11-16 22:53:47,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:53:47,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1451 transitions. [2024-11-16 22:53:47,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-16 22:53:47,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:53:47,212 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:53:47,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 22:53:47,213 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:53:47,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:53:47,213 INFO L85 PathProgramCache]: Analyzing trace with hash -585416177, now seen corresponding path program 1 times [2024-11-16 22:53:47,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:53:47,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696217793] [2024-11-16 22:53:47,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:53:47,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:53:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:47,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:53:47,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:53:47,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696217793] [2024-11-16 22:53:47,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696217793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:53:47,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:53:47,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 22:53:47,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485418625] [2024-11-16 22:53:47,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:53:47,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 22:53:47,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:53:47,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 22:53:47,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 22:53:47,454 INFO L87 Difference]: Start difference. First operand 1001 states and 1451 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:53:47,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:53:47,784 INFO L93 Difference]: Finished difference Result 2532 states and 3684 transitions. [2024-11-16 22:53:47,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 22:53:47,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2024-11-16 22:53:47,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:53:47,792 INFO L225 Difference]: With dead ends: 2532 [2024-11-16 22:53:47,792 INFO L226 Difference]: Without dead ends: 1538 [2024-11-16 22:53:47,794 INFO L431 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 [2024-11-16 22:53:47,796 INFO L432 NwaCegarLoop]: 1327 mSDtfsCounter, 721 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 22:53:47,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 2636 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 22:53:47,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2024-11-16 22:53:47,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1377. [2024-11-16 22:53:47,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1357 states have (on average 1.4517317612380252) internal successors, (1970), 1362 states have internal predecessors, (1970), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 22:53:47,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 2001 transitions. [2024-11-16 22:53:47,839 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 2001 transitions. Word has length 219 [2024-11-16 22:53:47,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:53:47,841 INFO L471 AbstractCegarLoop]: Abstraction has 1377 states and 2001 transitions. [2024-11-16 22:53:47,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 22:53:47,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 2001 transitions. [2024-11-16 22:53:47,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-16 22:53:47,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:53:47,847 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:53:47,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 22:53:47,849 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:53:47,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:53:47,850 INFO L85 PathProgramCache]: Analyzing trace with hash 55886475, now seen corresponding path program 1 times [2024-11-16 22:53:47,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:53:47,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610292053] [2024-11-16 22:53:47,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:53:47,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:53:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:48,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:53:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:48,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:53:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:48,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:53:48,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:53:48,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610292053] [2024-11-16 22:53:48,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610292053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:53:48,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:53:48,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 22:53:48,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985195558] [2024-11-16 22:53:48,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:53:48,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 22:53:48,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:53:48,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 22:53:48,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 22:53:48,404 INFO L87 Difference]: Start difference. First operand 1377 states and 2001 transitions. Second operand has 5 states, 5 states have (on average 45.0) internal successors, (225), 4 states have internal predecessors, (225), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:53:49,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:53:49,138 INFO L93 Difference]: Finished difference Result 2622 states and 3821 transitions. [2024-11-16 22:53:49,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 22:53:49,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 4 states have internal predecessors, (225), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 234 [2024-11-16 22:53:49,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:53:49,148 INFO L225 Difference]: With dead ends: 2622 [2024-11-16 22:53:49,148 INFO L226 Difference]: Without dead ends: 1338 [2024-11-16 22:53:49,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 22:53:49,153 INFO L432 NwaCegarLoop]: 1211 mSDtfsCounter, 53 mSDsluCounter, 3480 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 4691 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 22:53:49,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 4691 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 22:53:49,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2024-11-16 22:53:49,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1335. [2024-11-16 22:53:49,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 1315 states have (on average 1.4395437262357413) internal successors, (1893), 1320 states have internal predecessors, (1893), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 22:53:49,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1924 transitions. [2024-11-16 22:53:49,195 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1924 transitions. Word has length 234 [2024-11-16 22:53:49,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:53:49,197 INFO L471 AbstractCegarLoop]: Abstraction has 1335 states and 1924 transitions. [2024-11-16 22:53:49,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 4 states have internal predecessors, (225), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:53:49,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1924 transitions. [2024-11-16 22:53:49,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-16 22:53:49,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:53:49,201 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:53:49,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 22:53:49,201 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:53:49,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:53:49,202 INFO L85 PathProgramCache]: Analyzing trace with hash 817739172, now seen corresponding path program 1 times [2024-11-16 22:53:49,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:53:49,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561947407] [2024-11-16 22:53:49,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:53:49,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:53:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:49,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:53:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:49,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:53:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:49,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:53:49,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:53:49,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561947407] [2024-11-16 22:53:49,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561947407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:53:49,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:53:49,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 22:53:49,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356549847] [2024-11-16 22:53:49,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:53:49,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:53:49,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:53:49,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:53:49,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:53:49,581 INFO L87 Difference]: Start difference. First operand 1335 states and 1924 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:53:50,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:53:50,250 INFO L93 Difference]: Finished difference Result 3157 states and 4576 transitions. [2024-11-16 22:53:50,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 22:53:50,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 234 [2024-11-16 22:53:50,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:53:50,260 INFO L225 Difference]: With dead ends: 3157 [2024-11-16 22:53:50,260 INFO L226 Difference]: Without dead ends: 1915 [2024-11-16 22:53:50,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:53:50,264 INFO L432 NwaCegarLoop]: 1258 mSDtfsCounter, 624 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 3589 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 22:53:50,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 3589 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 22:53:50,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2024-11-16 22:53:50,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1907. [2024-11-16 22:53:50,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1881 states have (on average 1.442849548112706) internal successors, (2714), 1886 states have internal predecessors, (2714), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-16 22:53:50,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2757 transitions. [2024-11-16 22:53:50,317 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2757 transitions. Word has length 234 [2024-11-16 22:53:50,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:53:50,318 INFO L471 AbstractCegarLoop]: Abstraction has 1907 states and 2757 transitions. [2024-11-16 22:53:50,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:53:50,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2757 transitions. [2024-11-16 22:53:50,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-16 22:53:50,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:53:50,322 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:53:50,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 22:53:50,322 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:53:50,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:53:50,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1115636814, now seen corresponding path program 1 times [2024-11-16 22:53:50,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:53:50,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440202941] [2024-11-16 22:53:50,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:53:50,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:53:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:50,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:53:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:50,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:53:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:50,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 22:53:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:50,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-16 22:53:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:50,734 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:53:50,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:53:50,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440202941] [2024-11-16 22:53:50,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440202941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:53:50,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:53:50,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 22:53:50,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290954219] [2024-11-16 22:53:50,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:53:50,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 22:53:50,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:53:50,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 22:53:50,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 22:53:50,737 INFO L87 Difference]: Start difference. First operand 1907 states and 2757 transitions. Second operand has 5 states, 5 states have (on average 46.0) internal successors, (230), 4 states have internal predecessors, (230), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 22:53:51,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:53:51,561 INFO L93 Difference]: Finished difference Result 3143 states and 4556 transitions. [2024-11-16 22:53:51,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 22:53:51,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.0) internal successors, (230), 4 states have internal predecessors, (230), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 249 [2024-11-16 22:53:51,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:53:51,570 INFO L225 Difference]: With dead ends: 3143 [2024-11-16 22:53:51,571 INFO L226 Difference]: Without dead ends: 1477 [2024-11-16 22:53:51,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 22:53:51,575 INFO L432 NwaCegarLoop]: 1260 mSDtfsCounter, 2414 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2418 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 22:53:51,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2418 Valid, 2587 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 22:53:51,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2024-11-16 22:53:51,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1474. [2024-11-16 22:53:51,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1453 states have (on average 1.428079834824501) internal successors, (2075), 1458 states have internal predecessors, (2075), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-16 22:53:51,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2108 transitions. [2024-11-16 22:53:51,625 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2108 transitions. Word has length 249 [2024-11-16 22:53:51,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:53:51,626 INFO L471 AbstractCegarLoop]: Abstraction has 1474 states and 2108 transitions. [2024-11-16 22:53:51,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.0) internal successors, (230), 4 states have internal predecessors, (230), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 22:53:51,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2108 transitions. [2024-11-16 22:53:51,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-16 22:53:51,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:53:51,631 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:53:51,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 22:53:51,632 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:53:51,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:53:51,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1562912451, now seen corresponding path program 1 times [2024-11-16 22:53:51,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:53:51,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514462169] [2024-11-16 22:53:51,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:53:51,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:53:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:52,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:53:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:52,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:53:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:52,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 22:53:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:52,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-16 22:53:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:52,099 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-16 22:53:52,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:53:52,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514462169] [2024-11-16 22:53:52,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514462169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:53:52,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:53:52,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 22:53:52,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967218523] [2024-11-16 22:53:52,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:53:52,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 22:53:52,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:53:52,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 22:53:52,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 22:53:52,103 INFO L87 Difference]: Start difference. First operand 1474 states and 2108 transitions. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 4 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:53:52,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:53:52,986 INFO L93 Difference]: Finished difference Result 2363 states and 3429 transitions. [2024-11-16 22:53:52,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 22:53:52,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 4 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 260 [2024-11-16 22:53:52,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:53:52,994 INFO L225 Difference]: With dead ends: 2363 [2024-11-16 22:53:52,994 INFO L226 Difference]: Without dead ends: 1435 [2024-11-16 22:53:52,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 22:53:52,998 INFO L432 NwaCegarLoop]: 1135 mSDtfsCounter, 53 mSDsluCounter, 3252 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 4387 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 22:53:52,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 4387 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 22:53:53,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2024-11-16 22:53:53,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1432. [2024-11-16 22:53:53,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1411 states have (on average 1.416017009213324) internal successors, (1998), 1416 states have internal predecessors, (1998), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-16 22:53:53,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2031 transitions. [2024-11-16 22:53:53,039 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2031 transitions. Word has length 260 [2024-11-16 22:53:53,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:53:53,039 INFO L471 AbstractCegarLoop]: Abstraction has 1432 states and 2031 transitions. [2024-11-16 22:53:53,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 4 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:53:53,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2031 transitions. [2024-11-16 22:53:53,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-16 22:53:53,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:53:53,043 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:53:53,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 22:53:53,043 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:53:53,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:53:53,044 INFO L85 PathProgramCache]: Analyzing trace with hash 917871497, now seen corresponding path program 1 times [2024-11-16 22:53:53,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:53:53,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148764718] [2024-11-16 22:53:53,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:53:53,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:53:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:54,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:53:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:54,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:53:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:54,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 22:53:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:54,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-16 22:53:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:54,301 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:53:54,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:53:54,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148764718] [2024-11-16 22:53:54,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148764718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:53:54,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070978230] [2024-11-16 22:53:54,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:53:54,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:53:54,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:53:54,305 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:53:54,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 22:53:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:54,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 22:53:54,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:53:55,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-16 22:53:55,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 22:53:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:53:55,479 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 22:53:55,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070978230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:53:55,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 22:53:55,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-16 22:53:55,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105135186] [2024-11-16 22:53:55,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:53:55,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 22:53:55,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:53:55,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 22:53:55,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-16 22:53:55,483 INFO L87 Difference]: Start difference. First operand 1432 states and 2031 transitions. Second operand has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:53:56,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:53:56,144 INFO L93 Difference]: Finished difference Result 2651 states and 3776 transitions. [2024-11-16 22:53:56,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 22:53:56,144 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 260 [2024-11-16 22:53:56,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:53:56,152 INFO L225 Difference]: With dead ends: 2651 [2024-11-16 22:53:56,152 INFO L226 Difference]: Without dead ends: 1761 [2024-11-16 22:53:56,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 256 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-16 22:53:56,154 INFO L432 NwaCegarLoop]: 1119 mSDtfsCounter, 2493 mSDsluCounter, 3022 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2501 SdHoareTripleChecker+Valid, 4141 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 22:53:56,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2501 Valid, 4141 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 22:53:56,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1761 states. [2024-11-16 22:53:56,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1761 to 1605. [2024-11-16 22:53:56,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1605 states, 1574 states have (on average 1.4078780177890724) internal successors, (2216), 1583 states have internal predecessors, (2216), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (23), 17 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-16 22:53:56,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2263 transitions. [2024-11-16 22:53:56,198 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2263 transitions. Word has length 260 [2024-11-16 22:53:56,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:53:56,199 INFO L471 AbstractCegarLoop]: Abstraction has 1605 states and 2263 transitions. [2024-11-16 22:53:56,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:53:56,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2263 transitions. [2024-11-16 22:53:56,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2024-11-16 22:53:56,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:53:56,204 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:53:56,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 22:53:56,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-16 22:53:56,409 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:53:56,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:53:56,410 INFO L85 PathProgramCache]: Analyzing trace with hash 2085493921, now seen corresponding path program 1 times [2024-11-16 22:53:56,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:53:56,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249647073] [2024-11-16 22:53:56,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:53:56,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:53:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:57,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:53:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:57,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:53:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:57,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 22:53:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:57,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-16 22:53:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:57,907 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 75 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:53:57,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:53:57,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249647073] [2024-11-16 22:53:57,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249647073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:53:57,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850809676] [2024-11-16 22:53:57,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:53:57,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:53:57,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:53:57,910 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:53:57,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 22:53:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:58,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 22:53:58,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:53:58,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 22:53:59,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-16 22:53:59,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 22:53:59,081 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 75 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:53:59,082 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 22:53:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 75 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:53:59,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850809676] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 22:53:59,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 22:53:59,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 5] total 13 [2024-11-16 22:53:59,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514227383] [2024-11-16 22:53:59,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 22:53:59,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 22:53:59,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:53:59,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 22:53:59,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-16 22:53:59,383 INFO L87 Difference]: Start difference. First operand 1605 states and 2263 transitions. Second operand has 13 states, 13 states have (on average 38.0) internal successors, (494), 12 states have internal predecessors, (494), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-16 22:54:00,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:54:00,934 INFO L93 Difference]: Finished difference Result 3936 states and 5521 transitions. [2024-11-16 22:54:00,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 22:54:00,935 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 38.0) internal successors, (494), 12 states have internal predecessors, (494), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 338 [2024-11-16 22:54:00,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:54:00,947 INFO L225 Difference]: With dead ends: 3936 [2024-11-16 22:54:00,947 INFO L226 Difference]: Without dead ends: 2572 [2024-11-16 22:54:00,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 696 GetRequests, 673 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-11-16 22:54:00,952 INFO L432 NwaCegarLoop]: 1122 mSDtfsCounter, 2195 mSDsluCounter, 7257 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2233 SdHoareTripleChecker+Valid, 8379 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 22:54:00,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2233 Valid, 8379 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 22:54:00,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2024-11-16 22:54:01,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 2271. [2024-11-16 22:54:01,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 2228 states have (on average 1.3833034111310591) internal successors, (3082), 2237 states have internal predecessors, (3082), 35 states have call successors, (35), 7 states have call predecessors, (35), 7 states have return successors, (34), 28 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-16 22:54:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 3151 transitions. [2024-11-16 22:54:01,029 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 3151 transitions. Word has length 338 [2024-11-16 22:54:01,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:54:01,030 INFO L471 AbstractCegarLoop]: Abstraction has 2271 states and 3151 transitions. [2024-11-16 22:54:01,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 38.0) internal successors, (494), 12 states have internal predecessors, (494), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-16 22:54:01,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 3151 transitions. [2024-11-16 22:54:01,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2024-11-16 22:54:01,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:54:01,049 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:54:01,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 22:54:01,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-16 22:54:01,251 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:54:01,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:54:01,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1390844669, now seen corresponding path program 1 times [2024-11-16 22:54:01,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:54:01,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589809818] [2024-11-16 22:54:01,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:01,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:54:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:07,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:54:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:07,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:54:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:07,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 22:54:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:07,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-16 22:54:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:07,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1232 backedges. 300 proven. 908 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:54:07,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:54:07,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589809818] [2024-11-16 22:54:07,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589809818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:54:07,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806801418] [2024-11-16 22:54:07,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:07,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:54:07,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:54:07,987 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:54:07,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 22:54:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:09,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 3775 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 22:54:09,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:54:09,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 22:54:09,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-16 22:54:09,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-16 22:54:10,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-16 22:54:10,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-16 22:54:10,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 22:54:10,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1232 backedges. 300 proven. 908 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:54:10,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 22:54:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1232 backedges. 300 proven. 908 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 22:54:11,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806801418] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 22:54:11,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 22:54:11,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 8] total 22 [2024-11-16 22:54:11,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315656011] [2024-11-16 22:54:11,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 22:54:11,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-16 22:54:11,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:54:11,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-16 22:54:11,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2024-11-16 22:54:11,145 INFO L87 Difference]: Start difference. First operand 2271 states and 3151 transitions. Second operand has 22 states, 22 states have (on average 63.63636363636363) internal successors, (1400), 21 states have internal predecessors, (1400), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-16 22:54:12,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:54:12,765 INFO L93 Difference]: Finished difference Result 5718 states and 7936 transitions. [2024-11-16 22:54:12,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-16 22:54:12,766 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 63.63636363636363) internal successors, (1400), 21 states have internal predecessors, (1400), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 788 [2024-11-16 22:54:12,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:54:12,789 INFO L225 Difference]: With dead ends: 5718 [2024-11-16 22:54:12,790 INFO L226 Difference]: Without dead ends: 4354 [2024-11-16 22:54:12,796 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1611 GetRequests, 1573 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=292, Invalid=764, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 22:54:12,797 INFO L432 NwaCegarLoop]: 1122 mSDtfsCounter, 6338 mSDsluCounter, 10325 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6424 SdHoareTripleChecker+Valid, 11447 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 22:54:12,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6424 Valid, 11447 Invalid, 1793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 22:54:12,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4354 states. [2024-11-16 22:54:12,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4354 to 4053. [2024-11-16 22:54:13,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4053 states, 3986 states have (on average 1.3602609131961867) internal successors, (5422), 3995 states have internal predecessors, (5422), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-16 22:54:13,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4053 states to 4053 states and 5539 transitions. [2024-11-16 22:54:13,022 INFO L78 Accepts]: Start accepts. Automaton has 4053 states and 5539 transitions. Word has length 788 [2024-11-16 22:54:13,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:54:13,023 INFO L471 AbstractCegarLoop]: Abstraction has 4053 states and 5539 transitions. [2024-11-16 22:54:13,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 63.63636363636363) internal successors, (1400), 21 states have internal predecessors, (1400), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-16 22:54:13,030 INFO L276 IsEmpty]: Start isEmpty. Operand 4053 states and 5539 transitions. [2024-11-16 22:54:13,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1689 [2024-11-16 22:54:13,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:54:13,111 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:54:13,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 22:54:13,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:54:13,313 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:54:13,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:54:13,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1169746873, now seen corresponding path program 2 times [2024-11-16 22:54:13,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:54:13,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328129533] [2024-11-16 22:54:13,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:13,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:54:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:20,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:54:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:20,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:54:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:20,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 22:54:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:20,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-16 22:54:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:20,643 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 2042 proven. 77 refuted. 0 times theorem prover too weak. 5419 trivial. 0 not checked. [2024-11-16 22:54:20,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:54:20,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328129533] [2024-11-16 22:54:20,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328129533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:54:20,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269014691] [2024-11-16 22:54:20,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 22:54:20,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:54:20,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:54:20,648 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:54:20,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 22:54:21,940 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 22:54:21,941 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 22:54:21,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 22:54:21,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:54:22,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 22:54:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7538 trivial. 0 not checked. [2024-11-16 22:54:22,717 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 22:54:22,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269014691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:54:22,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 22:54:22,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-11-16 22:54:22,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664770053] [2024-11-16 22:54:22,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:54:22,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 22:54:22,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:54:22,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 22:54:22,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-16 22:54:22,726 INFO L87 Difference]: Start difference. First operand 4053 states and 5539 transitions. Second operand has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:54:23,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:54:23,992 INFO L93 Difference]: Finished difference Result 4937 states and 6840 transitions. [2024-11-16 22:54:23,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 22:54:23,992 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1688 [2024-11-16 22:54:23,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:54:24,018 INFO L225 Difference]: With dead ends: 4937 [2024-11-16 22:54:24,020 INFO L226 Difference]: Without dead ends: 4071 [2024-11-16 22:54:24,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1712 GetRequests, 1689 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2024-11-16 22:54:24,024 INFO L432 NwaCegarLoop]: 1168 mSDtfsCounter, 406 mSDsluCounter, 6166 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 7334 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 22:54:24,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 7334 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 22:54:24,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2024-11-16 22:54:24,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 4056. [2024-11-16 22:54:24,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4056 states, 3989 states have (on average 1.3599899724241664) internal successors, (5425), 3998 states have internal predecessors, (5425), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-16 22:54:24,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4056 states to 4056 states and 5542 transitions. [2024-11-16 22:54:24,142 INFO L78 Accepts]: Start accepts. Automaton has 4056 states and 5542 transitions. Word has length 1688 [2024-11-16 22:54:24,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:54:24,145 INFO L471 AbstractCegarLoop]: Abstraction has 4056 states and 5542 transitions. [2024-11-16 22:54:24,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:54:24,145 INFO L276 IsEmpty]: Start isEmpty. Operand 4056 states and 5542 transitions. [2024-11-16 22:54:24,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1689 [2024-11-16 22:54:24,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:54:24,168 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:54:24,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 22:54:24,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:54:24,369 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:54:24,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:54:24,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1177506232, now seen corresponding path program 1 times [2024-11-16 22:54:24,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:54:24,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63648778] [2024-11-16 22:54:24,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:24,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:54:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:27,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:54:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:27,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:54:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:27,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 22:54:27,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:27,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-16 22:54:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:27,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7538 trivial. 0 not checked. [2024-11-16 22:54:27,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:54:27,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63648778] [2024-11-16 22:54:27,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63648778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:54:27,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:54:27,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 22:54:27,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211950260] [2024-11-16 22:54:27,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:54:27,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:54:27,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:54:27,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:54:27,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:54:27,595 INFO L87 Difference]: Start difference. First operand 4056 states and 5542 transitions. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:54:28,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:54:28,134 INFO L93 Difference]: Finished difference Result 4941 states and 6889 transitions. [2024-11-16 22:54:28,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 22:54:28,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1688 [2024-11-16 22:54:28,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:54:28,150 INFO L225 Difference]: With dead ends: 4941 [2024-11-16 22:54:28,151 INFO L226 Difference]: Without dead ends: 4065 [2024-11-16 22:54:28,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:54:28,155 INFO L432 NwaCegarLoop]: 1148 mSDtfsCounter, 24 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3292 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 22:54:28,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3292 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 22:54:28,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4065 states. [2024-11-16 22:54:28,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4065 to 4056. [2024-11-16 22:54:28,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4056 states, 3989 states have (on average 1.3592379042366507) internal successors, (5422), 3998 states have internal predecessors, (5422), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-16 22:54:28,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4056 states to 4056 states and 5539 transitions. [2024-11-16 22:54:28,332 INFO L78 Accepts]: Start accepts. Automaton has 4056 states and 5539 transitions. Word has length 1688 [2024-11-16 22:54:28,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:54:28,335 INFO L471 AbstractCegarLoop]: Abstraction has 4056 states and 5539 transitions. [2024-11-16 22:54:28,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:54:28,336 INFO L276 IsEmpty]: Start isEmpty. Operand 4056 states and 5539 transitions. [2024-11-16 22:54:28,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1689 [2024-11-16 22:54:28,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:54:28,377 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:54:28,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 22:54:28,377 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:54:28,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:54:28,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1276456245, now seen corresponding path program 1 times [2024-11-16 22:54:28,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:54:28,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931011835] [2024-11-16 22:54:28,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:28,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:54:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:31,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:54:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:31,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:54:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:31,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 22:54:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:31,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-16 22:54:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:31,078 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7538 trivial. 0 not checked. [2024-11-16 22:54:31,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:54:31,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931011835] [2024-11-16 22:54:31,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931011835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:54:31,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:54:31,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 22:54:31,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940903435] [2024-11-16 22:54:31,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:54:31,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 22:54:31,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:54:31,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 22:54:31,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 22:54:31,081 INFO L87 Difference]: Start difference. First operand 4056 states and 5539 transitions. Second operand has 5 states, 5 states have (on average 49.4) internal successors, (247), 4 states have internal predecessors, (247), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:54:31,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:54:31,731 INFO L93 Difference]: Finished difference Result 4934 states and 6878 transitions. [2024-11-16 22:54:31,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 22:54:31,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.4) internal successors, (247), 4 states have internal predecessors, (247), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1688 [2024-11-16 22:54:31,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:54:31,747 INFO L225 Difference]: With dead ends: 4934 [2024-11-16 22:54:31,748 INFO L226 Difference]: Without dead ends: 4056 [2024-11-16 22:54:31,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 22:54:31,753 INFO L432 NwaCegarLoop]: 1133 mSDtfsCounter, 32 mSDsluCounter, 3246 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 4379 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 22:54:31,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 4379 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 22:54:31,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4056 states. [2024-11-16 22:54:31,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4056 to 4047. [2024-11-16 22:54:31,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4047 states, 3980 states have (on average 1.3595477386934673) internal successors, (5411), 3989 states have internal predecessors, (5411), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-16 22:54:31,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4047 states to 4047 states and 5528 transitions. [2024-11-16 22:54:31,843 INFO L78 Accepts]: Start accepts. Automaton has 4047 states and 5528 transitions. Word has length 1688 [2024-11-16 22:54:31,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:54:31,844 INFO L471 AbstractCegarLoop]: Abstraction has 4047 states and 5528 transitions. [2024-11-16 22:54:31,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.4) internal successors, (247), 4 states have internal predecessors, (247), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-16 22:54:31,845 INFO L276 IsEmpty]: Start isEmpty. Operand 4047 states and 5528 transitions. [2024-11-16 22:54:31,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1690 [2024-11-16 22:54:31,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:54:31,868 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:54:31,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 22:54:31,868 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:54:31,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:54:31,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1273714345, now seen corresponding path program 1 times [2024-11-16 22:54:31,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:54:31,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496407202] [2024-11-16 22:54:31,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:31,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:54:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:38,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 22:54:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:38,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 22:54:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:38,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 22:54:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:38,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-16 22:54:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:38,497 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 2042 proven. 77 refuted. 0 times theorem prover too weak. 5419 trivial. 0 not checked. [2024-11-16 22:54:38,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:54:38,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496407202] [2024-11-16 22:54:38,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496407202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:54:38,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186776067] [2024-11-16 22:54:38,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:38,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:54:38,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:54:38,501 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 22:54:38,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 22:54:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:41,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 8030 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-16 22:54:41,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:54:41,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-16 22:54:41,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13