./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f 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_SAX_nondet_test3-2.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 be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 11:58:58,754 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 11:58:58,808 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 11:58:58,813 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 11:58:58,813 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 11:58:58,841 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 11:58:58,842 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 11:58:58,842 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 11:58:58,842 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 11:58:58,843 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 11:58:58,843 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 11:58:58,843 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 11:58:58,844 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 11:58:58,844 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 11:58:58,844 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 11:58:58,845 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 11:58:58,845 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 11:58:58,845 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 11:58:58,846 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 11:58:58,848 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 11:58:58,848 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 11:58:58,850 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 11:58:58,850 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 11:58:58,850 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 11:58:58,850 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 11:58:58,851 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 11:58:58,851 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 11:58:58,851 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 11:58:58,851 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 11:58:58,851 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 11:58:58,851 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 11:58:58,852 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 11:58:58,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 11:58:58,852 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 11:58:58,852 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 11:58:58,852 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 11:58:58,852 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 11:58:58,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 11:58:58,853 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 11:58:58,853 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 11:58:58,854 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 11:58:58,855 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 11:58:58,855 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2024-11-12 11:58:59,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 11:58:59,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 11:58:59,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 11:58:59,078 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 11:58:59,078 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 11:58:59,079 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-2.i [2024-11-12 11:59:00,325 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 11:59:00,589 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 11:59:00,591 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-2.i [2024-11-12 11:59:00,605 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eff4a30b0/7913a88fec034a1ebafd4271fe0b1356/FLAG5b5dddc57 [2024-11-12 11:59:00,618 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eff4a30b0/7913a88fec034a1ebafd4271fe0b1356 [2024-11-12 11:59:00,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 11:59:00,621 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 11:59:00,622 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 11:59:00,622 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 11:59:00,627 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 11:59:00,628 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:59:00" (1/1) ... [2024-11-12 11:59:00,628 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75dfebbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:59:00, skipping insertion in model container [2024-11-12 11:59:00,628 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:59:00" (1/1) ... [2024-11-12 11:59:00,672 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 11:59:01,001 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_SAX_nondet_test3-2.i[33519,33532] [2024-11-12 11:59:01,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 11:59:01,144 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 11:59:01,179 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_SAX_nondet_test3-2.i[33519,33532] [2024-11-12 11:59:01,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 11:59:01,321 INFO L204 MainTranslator]: Completed translation [2024-11-12 11:59:01,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:59:01 WrapperNode [2024-11-12 11:59:01,322 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 11:59:01,323 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 11:59:01,324 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 11:59:01,324 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 11:59:01,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:59:01" (1/1) ... [2024-11-12 11:59:01,361 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:59:01" (1/1) ... [2024-11-12 11:59:01,424 INFO L138 Inliner]: procedures = 177, calls = 324, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1597 [2024-11-12 11:59:01,424 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 11:59:01,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 11:59:01,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 11:59:01,425 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 11:59:01,436 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:59:01" (1/1) ... [2024-11-12 11:59:01,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:59:01" (1/1) ... [2024-11-12 11:59:01,444 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:59:01" (1/1) ... [2024-11-12 11:59:01,516 INFO L175 MemorySlicer]: Split 302 memory accesses to 3 slices as follows [2, 34, 266]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 4, 58]. [2024-11-12 11:59:01,516 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:59:01" (1/1) ... [2024-11-12 11:59:01,516 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:59:01" (1/1) ... [2024-11-12 11:59:01,550 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:59:01" (1/1) ... [2024-11-12 11:59:01,565 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:59:01" (1/1) ... [2024-11-12 11:59:01,574 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:59:01" (1/1) ... [2024-11-12 11:59:01,581 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:59:01" (1/1) ... [2024-11-12 11:59:01,592 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 11:59:01,593 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 11:59:01,593 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 11:59:01,593 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 11:59:01,594 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:59:01" (1/1) ... [2024-11-12 11:59:01,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 11:59:01,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:59:01,627 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) [2024-11-12 11:59:01,629 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 [2024-11-12 11:59:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 11:59:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 11:59:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 11:59:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-12 11:59:01,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-12 11:59:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 11:59:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 11:59:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 11:59:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-12 11:59:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-12 11:59:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-12 11:59:01,668 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-12 11:59:01,668 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-12 11:59:01,668 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-12 11:59:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 11:59:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 11:59:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-12 11:59:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-12 11:59:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-12 11:59:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-12 11:59:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-12 11:59:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-12 11:59:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-12 11:59:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 11:59:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 11:59:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 11:59:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 11:59:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 11:59:01,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 11:59:01,839 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 11:59:01,841 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 11:59:02,984 INFO L? ?]: Removed 338 outVars from TransFormulas that were not future-live. [2024-11-12 11:59:02,984 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 11:59:03,011 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 11:59:03,011 INFO L316 CfgBuilder]: Removed 72 assume(true) statements. [2024-11-12 11:59:03,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:59:03 BoogieIcfgContainer [2024-11-12 11:59:03,012 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 11:59:03,013 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 11:59:03,014 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 11:59:03,017 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 11:59:03,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:59:00" (1/3) ... [2024-11-12 11:59:03,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137ebda5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:59:03, skipping insertion in model container [2024-11-12 11:59:03,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:59:01" (2/3) ... [2024-11-12 11:59:03,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137ebda5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:59:03, skipping insertion in model container [2024-11-12 11:59:03,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:59:03" (3/3) ... [2024-11-12 11:59:03,020 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_nondet_test3-2.i [2024-11-12 11:59:03,032 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 11:59:03,032 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 11:59:03,091 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 11:59:03,095 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;@514efc5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 11:59:03,096 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-12 11:59:03,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 437 states, 428 states have (on average 1.6214953271028036) internal successors, (694), 430 states have internal predecessors, (694), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-12 11:59:03,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-12 11:59:03,105 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:59:03,105 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:59:03,105 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:59:03,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:59:03,109 INFO L85 PathProgramCache]: Analyzing trace with hash 517723227, now seen corresponding path program 1 times [2024-11-12 11:59:03,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:59:03,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702253478] [2024-11-12 11:59:03,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:03,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:59:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:03,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:59:03,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:59:03,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702253478] [2024-11-12 11:59:03,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702253478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:59:03,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:59:03,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 11:59:03,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660213552] [2024-11-12 11:59:03,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:59:03,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 11:59:03,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:59:03,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 11:59:03,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 11:59:03,274 INFO L87 Difference]: Start difference. First operand has 437 states, 428 states have (on average 1.6214953271028036) internal successors, (694), 430 states have internal predecessors, (694), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:59:03,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:59:03,329 INFO L93 Difference]: Finished difference Result 871 states and 1406 transitions. [2024-11-12 11:59:03,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 11:59:03,331 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-12 11:59:03,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:59:03,343 INFO L225 Difference]: With dead ends: 871 [2024-11-12 11:59:03,344 INFO L226 Difference]: Without dead ends: 398 [2024-11-12 11:59:03,350 INFO L434 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 [2024-11-12 11:59:03,354 INFO L435 NwaCegarLoop]: 627 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 11:59:03,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 11:59:03,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-11-12 11:59:03,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2024-11-12 11:59:03,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 390 states have (on average 1.4461538461538461) internal successors, (564), 391 states have internal predecessors, (564), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-12 11:59:03,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 574 transitions. [2024-11-12 11:59:03,406 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 574 transitions. Word has length 12 [2024-11-12 11:59:03,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:59:03,406 INFO L471 AbstractCegarLoop]: Abstraction has 398 states and 574 transitions. [2024-11-12 11:59:03,406 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:59:03,406 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 574 transitions. [2024-11-12 11:59:03,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-12 11:59:03,407 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:59:03,407 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:59:03,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 11:59:03,407 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:59:03,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:59:03,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1025747970, now seen corresponding path program 1 times [2024-11-12 11:59:03,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:59:03,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341457626] [2024-11-12 11:59:03,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:03,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:59:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:03,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:59:03,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:59:03,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341457626] [2024-11-12 11:59:03,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341457626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:59:03,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:59:03,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 11:59:03,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452081212] [2024-11-12 11:59:03,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:59:03,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:59:03,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:59:03,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:59:03,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 11:59:03,595 INFO L87 Difference]: Start difference. First operand 398 states and 574 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:59:03,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:59:03,956 INFO L93 Difference]: Finished difference Result 1089 states and 1589 transitions. [2024-11-12 11:59:03,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 11:59:03,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-12 11:59:03,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:59:03,959 INFO L225 Difference]: With dead ends: 1089 [2024-11-12 11:59:03,960 INFO L226 Difference]: Without dead ends: 692 [2024-11-12 11:59:03,960 INFO L434 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 [2024-11-12 11:59:03,961 INFO L435 NwaCegarLoop]: 563 mSDtfsCounter, 431 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 11:59:03,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1642 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 11:59:03,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2024-11-12 11:59:03,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 691. [2024-11-12 11:59:03,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 682 states have (on average 1.466275659824047) internal successors, (1000), 684 states have internal predecessors, (1000), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-12 11:59:03,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2024-11-12 11:59:03,990 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 14 [2024-11-12 11:59:03,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:59:03,990 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2024-11-12 11:59:03,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:59:03,991 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2024-11-12 11:59:03,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-12 11:59:03,993 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:59:03,993 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:59:03,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 11:59:03,993 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:59:03,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:59:03,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1308050195, now seen corresponding path program 1 times [2024-11-12 11:59:03,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:59:03,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739386894] [2024-11-12 11:59:03,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:03,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:59:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:04,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:59:04,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:59:04,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739386894] [2024-11-12 11:59:04,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739386894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:59:04,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:59:04,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 11:59:04,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725566707] [2024-11-12 11:59:04,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:59:04,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:59:04,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:59:04,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:59:04,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 11:59:04,205 INFO L87 Difference]: Start difference. First operand 691 states and 1012 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:59:04,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:59:04,289 INFO L93 Difference]: Finished difference Result 963 states and 1402 transitions. [2024-11-12 11:59:04,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 11:59:04,290 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-12 11:59:04,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:59:04,292 INFO L225 Difference]: With dead ends: 963 [2024-11-12 11:59:04,294 INFO L226 Difference]: Without dead ends: 607 [2024-11-12 11:59:04,295 INFO L434 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 [2024-11-12 11:59:04,296 INFO L435 NwaCegarLoop]: 472 mSDtfsCounter, 30 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 11:59:04,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1397 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 11:59:04,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2024-11-12 11:59:04,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2024-11-12 11:59:04,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 598 states have (on average 1.414715719063545) internal successors, (846), 600 states have internal predecessors, (846), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-12 11:59:04,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 858 transitions. [2024-11-12 11:59:04,325 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 858 transitions. Word has length 68 [2024-11-12 11:59:04,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:59:04,326 INFO L471 AbstractCegarLoop]: Abstraction has 607 states and 858 transitions. [2024-11-12 11:59:04,326 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:59:04,326 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 858 transitions. [2024-11-12 11:59:04,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-12 11:59:04,331 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:59:04,331 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:59:04,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 11:59:04,332 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:59:04,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:59:04,332 INFO L85 PathProgramCache]: Analyzing trace with hash 753154847, now seen corresponding path program 1 times [2024-11-12 11:59:04,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:59:04,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176218023] [2024-11-12 11:59:04,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:04,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:59:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:04,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:59:04,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:59:04,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176218023] [2024-11-12 11:59:04,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176218023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:59:04,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:59:04,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 11:59:04,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400994561] [2024-11-12 11:59:04,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:59:04,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 11:59:04,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:59:04,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 11:59:04,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-12 11:59:04,709 INFO L87 Difference]: Start difference. First operand 607 states and 858 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:59:04,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:59:04,845 INFO L93 Difference]: Finished difference Result 1122 states and 1555 transitions. [2024-11-12 11:59:04,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 11:59:04,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-12 11:59:04,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:59:04,848 INFO L225 Difference]: With dead ends: 1122 [2024-11-12 11:59:04,848 INFO L226 Difference]: Without dead ends: 847 [2024-11-12 11:59:04,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-12 11:59:04,851 INFO L435 NwaCegarLoop]: 521 mSDtfsCounter, 465 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 3000 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 11:59:04,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 3000 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 11:59:04,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2024-11-12 11:59:04,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 606. [2024-11-12 11:59:04,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 597 states have (on average 1.4137353433835846) internal successors, (844), 599 states have internal predecessors, (844), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-12 11:59:04,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 856 transitions. [2024-11-12 11:59:04,870 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 856 transitions. Word has length 68 [2024-11-12 11:59:04,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:59:04,870 INFO L471 AbstractCegarLoop]: Abstraction has 606 states and 856 transitions. [2024-11-12 11:59:04,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:59:04,870 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 856 transitions. [2024-11-12 11:59:04,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-12 11:59:04,872 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:59:04,872 INFO L218 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] [2024-11-12 11:59:04,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 11:59:04,873 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:59:04,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:59:04,873 INFO L85 PathProgramCache]: Analyzing trace with hash 355503232, now seen corresponding path program 1 times [2024-11-12 11:59:04,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:59:04,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953838013] [2024-11-12 11:59:04,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:04,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:59:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:05,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:59:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:05,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:59:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:05,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 11:59:05,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:59:05,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953838013] [2024-11-12 11:59:05,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953838013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:59:05,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:59:05,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 11:59:05,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436124380] [2024-11-12 11:59:05,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:59:05,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 11:59:05,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:59:05,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 11:59:05,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 11:59:05,152 INFO L87 Difference]: Start difference. First operand 606 states and 856 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:05,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:59:05,408 INFO L93 Difference]: Finished difference Result 1121 states and 1576 transitions. [2024-11-12 11:59:05,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 11:59:05,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2024-11-12 11:59:05,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:59:05,411 INFO L225 Difference]: With dead ends: 1121 [2024-11-12 11:59:05,412 INFO L226 Difference]: Without dead ends: 525 [2024-11-12 11:59:05,413 INFO L434 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 [2024-11-12 11:59:05,413 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 38 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 11:59:05,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1432 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 11:59:05,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2024-11-12 11:59:05,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 522. [2024-11-12 11:59:05,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 513 states have (on average 1.345029239766082) internal successors, (690), 515 states have internal predecessors, (690), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-12 11:59:05,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 702 transitions. [2024-11-12 11:59:05,429 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 702 transitions. Word has length 105 [2024-11-12 11:59:05,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:59:05,430 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 702 transitions. [2024-11-12 11:59:05,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:05,431 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 702 transitions. [2024-11-12 11:59:05,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-12 11:59:05,432 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:59:05,432 INFO L218 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] [2024-11-12 11:59:05,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 11:59:05,432 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:59:05,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:59:05,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1095820404, now seen corresponding path program 1 times [2024-11-12 11:59:05,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:59:05,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422066080] [2024-11-12 11:59:05,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:05,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:59:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:05,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:59:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:05,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:59:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:05,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 11:59:05,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:59:05,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422066080] [2024-11-12 11:59:05,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422066080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:59:05,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:59:05,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 11:59:05,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292909391] [2024-11-12 11:59:05,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:59:05,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:59:05,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:59:05,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:59:05,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 11:59:05,664 INFO L87 Difference]: Start difference. First operand 522 states and 702 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:05,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:59:05,896 INFO L93 Difference]: Finished difference Result 1012 states and 1371 transitions. [2024-11-12 11:59:05,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 11:59:05,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2024-11-12 11:59:05,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:59:05,898 INFO L225 Difference]: With dead ends: 1012 [2024-11-12 11:59:05,899 INFO L226 Difference]: Without dead ends: 525 [2024-11-12 11:59:05,900 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 11:59:05,900 INFO L435 NwaCegarLoop]: 396 mSDtfsCounter, 8 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 11:59:05,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1090 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 11:59:05,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2024-11-12 11:59:05,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 522. [2024-11-12 11:59:05,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 513 states have (on average 1.3333333333333333) internal successors, (684), 515 states have internal predecessors, (684), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-12 11:59:05,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 696 transitions. [2024-11-12 11:59:05,913 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 696 transitions. Word has length 105 [2024-11-12 11:59:05,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:59:05,913 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 696 transitions. [2024-11-12 11:59:05,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:05,913 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 696 transitions. [2024-11-12 11:59:05,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-12 11:59:05,915 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:59:05,915 INFO L218 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] [2024-11-12 11:59:05,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 11:59:05,916 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:59:05,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:59:05,916 INFO L85 PathProgramCache]: Analyzing trace with hash 815222154, now seen corresponding path program 1 times [2024-11-12 11:59:05,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:59:05,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820910911] [2024-11-12 11:59:05,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:05,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:59:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:06,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:59:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:06,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:59:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 11:59:06,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:59:06,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820910911] [2024-11-12 11:59:06,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820910911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:59:06,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5473823] [2024-11-12 11:59:06,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:06,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:59:06,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:59:06,297 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) [2024-11-12 11:59:06,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 11:59:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:06,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-12 11:59:06,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:59:06,626 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 [2024-11-12 11:59:06,651 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 16 treesize of output 17 [2024-11-12 11:59:07,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 11:59:07,384 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:59:07,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5473823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:59:07,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:59:07,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2024-11-12 11:59:07,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975779001] [2024-11-12 11:59:07,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:59:07,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 11:59:07,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:59:07,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 11:59:07,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-12 11:59:07,386 INFO L87 Difference]: Start difference. First operand 522 states and 696 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:08,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:59:08,774 INFO L93 Difference]: Finished difference Result 1242 states and 1672 transitions. [2024-11-12 11:59:08,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 11:59:08,775 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2024-11-12 11:59:08,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:59:08,777 INFO L225 Difference]: With dead ends: 1242 [2024-11-12 11:59:08,777 INFO L226 Difference]: Without dead ends: 765 [2024-11-12 11:59:08,779 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-11-12 11:59:08,779 INFO L435 NwaCegarLoop]: 387 mSDtfsCounter, 498 mSDsluCounter, 2180 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-12 11:59:08,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 2567 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-12 11:59:08,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2024-11-12 11:59:08,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 522. [2024-11-12 11:59:08,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 513 states have (on average 1.331384015594542) internal successors, (683), 515 states have internal predecessors, (683), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-12 11:59:08,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 695 transitions. [2024-11-12 11:59:08,794 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 695 transitions. Word has length 105 [2024-11-12 11:59:08,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:59:08,795 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 695 transitions. [2024-11-12 11:59:08,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:08,795 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 695 transitions. [2024-11-12 11:59:08,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-12 11:59:08,796 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:59:08,796 INFO L218 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] [2024-11-12 11:59:08,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 11:59:08,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:59:08,997 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:59:08,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:59:08,998 INFO L85 PathProgramCache]: Analyzing trace with hash -500572081, now seen corresponding path program 1 times [2024-11-12 11:59:08,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:59:08,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783690309] [2024-11-12 11:59:08,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:08,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:59:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:09,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-12 11:59:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:09,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-12 11:59:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:09,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 11:59:09,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:59:09,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783690309] [2024-11-12 11:59:09,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783690309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:59:09,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151642907] [2024-11-12 11:59:09,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:09,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:59:09,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:59:09,376 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) [2024-11-12 11:59:09,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 11:59:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:09,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 11:59:09,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:59:09,829 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 [2024-11-12 11:59:09,853 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 11:59:09,854 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:59:09,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151642907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:59:09,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:59:09,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-12 11:59:09,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699355030] [2024-11-12 11:59:09,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:59:09,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 11:59:09,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:59:09,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 11:59:09,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-12 11:59:09,856 INFO L87 Difference]: Start difference. First operand 522 states and 695 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:09,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:59:09,930 INFO L93 Difference]: Finished difference Result 707 states and 945 transitions. [2024-11-12 11:59:09,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 11:59:09,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 106 [2024-11-12 11:59:09,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:59:09,933 INFO L225 Difference]: With dead ends: 707 [2024-11-12 11:59:09,933 INFO L226 Difference]: Without dead ends: 696 [2024-11-12 11:59:09,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-12 11:59:09,934 INFO L435 NwaCegarLoop]: 399 mSDtfsCounter, 483 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 11:59:09,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 1198 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 11:59:09,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2024-11-12 11:59:09,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 524. [2024-11-12 11:59:09,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 515 states have (on average 1.3300970873786409) internal successors, (685), 517 states have internal predecessors, (685), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-12 11:59:09,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 697 transitions. [2024-11-12 11:59:09,948 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 697 transitions. Word has length 106 [2024-11-12 11:59:09,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:59:09,948 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 697 transitions. [2024-11-12 11:59:09,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:09,948 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 697 transitions. [2024-11-12 11:59:09,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-12 11:59:09,949 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:59:09,950 INFO L218 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] [2024-11-12 11:59:09,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-12 11:59:10,150 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,SelfDestructingSolverStorable7 [2024-11-12 11:59:10,151 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:59:10,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:59:10,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1592192084, now seen corresponding path program 1 times [2024-11-12 11:59:10,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:59:10,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753474540] [2024-11-12 11:59:10,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:10,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:59:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:10,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-12 11:59:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:10,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-12 11:59:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:10,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 11:59:10,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:59:10,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753474540] [2024-11-12 11:59:10,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753474540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:59:10,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:59:10,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 11:59:10,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28025192] [2024-11-12 11:59:10,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:59:10,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 11:59:10,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:59:10,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 11:59:10,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-12 11:59:10,371 INFO L87 Difference]: Start difference. First operand 524 states and 697 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:10,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:59:10,833 INFO L93 Difference]: Finished difference Result 1309 states and 1759 transitions. [2024-11-12 11:59:10,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 11:59:10,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 160 [2024-11-12 11:59:10,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:59:10,837 INFO L225 Difference]: With dead ends: 1309 [2024-11-12 11:59:10,837 INFO L226 Difference]: Without dead ends: 877 [2024-11-12 11:59:10,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-12 11:59:10,839 INFO L435 NwaCegarLoop]: 499 mSDtfsCounter, 918 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 11:59:10,840 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 1861 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 11:59:10,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2024-11-12 11:59:10,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 664. [2024-11-12 11:59:10,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 654 states have (on average 1.3363914373088686) internal successors, (874), 657 states have internal predecessors, (874), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-12 11:59:10,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 888 transitions. [2024-11-12 11:59:10,861 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 888 transitions. Word has length 160 [2024-11-12 11:59:10,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:59:10,862 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 888 transitions. [2024-11-12 11:59:10,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:10,862 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 888 transitions. [2024-11-12 11:59:10,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-12 11:59:10,863 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:59:10,864 INFO L218 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] [2024-11-12 11:59:10,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 11:59:10,864 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:59:10,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:59:10,864 INFO L85 PathProgramCache]: Analyzing trace with hash 404449816, now seen corresponding path program 1 times [2024-11-12 11:59:10,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:59:10,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149011471] [2024-11-12 11:59:10,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:10,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:59:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:11,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-12 11:59:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:11,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-12 11:59:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 11:59:11,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:59:11,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149011471] [2024-11-12 11:59:11,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149011471] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:59:11,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407181831] [2024-11-12 11:59:11,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:11,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:59:11,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:59:11,254 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) [2024-11-12 11:59:11,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 11:59:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:11,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-12 11:59:11,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:59:11,574 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 [2024-11-12 11:59:12,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 11:59:12,085 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:59:12,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407181831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:59:12,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:59:12,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2024-11-12 11:59:12,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209390914] [2024-11-12 11:59:12,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:59:12,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 11:59:12,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:59:12,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 11:59:12,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-12 11:59:12,086 INFO L87 Difference]: Start difference. First operand 664 states and 888 transitions. Second operand has 10 states, 10 states have (on average 16.1) internal successors, (161), 10 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:12,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:59:12,638 INFO L93 Difference]: Finished difference Result 1308 states and 1755 transitions. [2024-11-12 11:59:12,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 11:59:12,639 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.1) internal successors, (161), 10 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 170 [2024-11-12 11:59:12,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:59:12,642 INFO L225 Difference]: With dead ends: 1308 [2024-11-12 11:59:12,642 INFO L226 Difference]: Without dead ends: 896 [2024-11-12 11:59:12,645 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-11-12 11:59:12,645 INFO L435 NwaCegarLoop]: 407 mSDtfsCounter, 396 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 11:59:12,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 1810 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 11:59:12,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2024-11-12 11:59:12,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 699. [2024-11-12 11:59:12,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 689 states have (on average 1.3251088534107403) internal successors, (913), 692 states have internal predecessors, (913), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-12 11:59:12,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 927 transitions. [2024-11-12 11:59:12,670 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 927 transitions. Word has length 170 [2024-11-12 11:59:12,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:59:12,670 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 927 transitions. [2024-11-12 11:59:12,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.1) internal successors, (161), 10 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:12,670 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 927 transitions. [2024-11-12 11:59:12,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-12 11:59:12,672 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:59:12,672 INFO L218 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] [2024-11-12 11:59:12,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 11:59:12,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:59:12,873 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:59:12,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:59:12,874 INFO L85 PathProgramCache]: Analyzing trace with hash 105131120, now seen corresponding path program 1 times [2024-11-12 11:59:12,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:59:12,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975000428] [2024-11-12 11:59:12,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:12,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:59:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:13,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-12 11:59:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:13,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-12 11:59:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:13,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 11:59:13,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:59:13,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975000428] [2024-11-12 11:59:13,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975000428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:59:13,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435670261] [2024-11-12 11:59:13,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:13,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:59:13,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:59:13,286 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) [2024-11-12 11:59:13,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 11:59:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:13,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-12 11:59:13,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:59:13,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 11:59:13,806 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:59:13,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435670261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:59:13,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:59:13,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-12 11:59:13,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919345489] [2024-11-12 11:59:13,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:59:13,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:59:13,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:59:13,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:59:13,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 11:59:13,809 INFO L87 Difference]: Start difference. First operand 699 states and 927 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:13,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:59:13,917 INFO L93 Difference]: Finished difference Result 1353 states and 1806 transitions. [2024-11-12 11:59:13,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 11:59:13,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2024-11-12 11:59:13,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:59:13,920 INFO L225 Difference]: With dead ends: 1353 [2024-11-12 11:59:13,920 INFO L226 Difference]: Without dead ends: 699 [2024-11-12 11:59:13,922 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 11:59:13,922 INFO L435 NwaCegarLoop]: 398 mSDtfsCounter, 17 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 11:59:13,922 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1065 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 11:59:13,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2024-11-12 11:59:13,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2024-11-12 11:59:13,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 689 states have (on average 1.3222060957910013) internal successors, (911), 692 states have internal predecessors, (911), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-12 11:59:13,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 925 transitions. [2024-11-12 11:59:13,941 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 925 transitions. Word has length 171 [2024-11-12 11:59:13,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:59:13,941 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 925 transitions. [2024-11-12 11:59:13,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:13,941 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 925 transitions. [2024-11-12 11:59:13,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-12 11:59:13,942 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:59:13,942 INFO L218 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] [2024-11-12 11:59:13,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 11:59:14,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:59:14,143 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:59:14,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:59:14,144 INFO L85 PathProgramCache]: Analyzing trace with hash -800828870, now seen corresponding path program 1 times [2024-11-12 11:59:14,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:59:14,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070167550] [2024-11-12 11:59:14,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:14,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:59:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:14,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-12 11:59:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:14,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-12 11:59:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:14,451 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 11:59:14,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:59:14,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070167550] [2024-11-12 11:59:14,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070167550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:59:14,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:59:14,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 11:59:14,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043001418] [2024-11-12 11:59:14,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:59:14,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 11:59:14,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:59:14,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 11:59:14,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 11:59:14,453 INFO L87 Difference]: Start difference. First operand 699 states and 925 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:14,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:59:14,772 INFO L93 Difference]: Finished difference Result 1359 states and 1814 transitions. [2024-11-12 11:59:14,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 11:59:14,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 172 [2024-11-12 11:59:14,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:59:14,775 INFO L225 Difference]: With dead ends: 1359 [2024-11-12 11:59:14,775 INFO L226 Difference]: Without dead ends: 708 [2024-11-12 11:59:14,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 11:59:14,776 INFO L435 NwaCegarLoop]: 391 mSDtfsCounter, 16 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 11:59:14,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1671 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 11:59:14,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2024-11-12 11:59:14,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 705. [2024-11-12 11:59:14,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 695 states have (on average 1.3194244604316547) internal successors, (917), 698 states have internal predecessors, (917), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-12 11:59:14,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 931 transitions. [2024-11-12 11:59:14,794 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 931 transitions. Word has length 172 [2024-11-12 11:59:14,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:59:14,795 INFO L471 AbstractCegarLoop]: Abstraction has 705 states and 931 transitions. [2024-11-12 11:59:14,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:14,795 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 931 transitions. [2024-11-12 11:59:14,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-12 11:59:14,796 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:59:14,796 INFO L218 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] [2024-11-12 11:59:14,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 11:59:14,796 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:59:14,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:59:14,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1123742935, now seen corresponding path program 1 times [2024-11-12 11:59:14,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:59:14,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747865135] [2024-11-12 11:59:14,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:14,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:59:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:15,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-12 11:59:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:15,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-12 11:59:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:15,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 11:59:15,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:59:15,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747865135] [2024-11-12 11:59:15,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747865135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:59:15,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:59:15,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 11:59:15,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855266320] [2024-11-12 11:59:15,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:59:15,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 11:59:15,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:59:15,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 11:59:15,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-12 11:59:15,083 INFO L87 Difference]: Start difference. First operand 705 states and 931 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:16,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:59:16,108 INFO L93 Difference]: Finished difference Result 1365 states and 1818 transitions. [2024-11-12 11:59:16,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 11:59:16,108 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2024-11-12 11:59:16,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:59:16,111 INFO L225 Difference]: With dead ends: 1365 [2024-11-12 11:59:16,111 INFO L226 Difference]: Without dead ends: 718 [2024-11-12 11:59:16,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-12 11:59:16,112 INFO L435 NwaCegarLoop]: 381 mSDtfsCounter, 20 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2260 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-12 11:59:16,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2260 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-12 11:59:16,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2024-11-12 11:59:16,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 713. [2024-11-12 11:59:16,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 703 states have (on average 1.3186344238975818) internal successors, (927), 706 states have internal predecessors, (927), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-12 11:59:16,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 941 transitions. [2024-11-12 11:59:16,131 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 941 transitions. Word has length 173 [2024-11-12 11:59:16,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:59:16,131 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 941 transitions. [2024-11-12 11:59:16,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:16,131 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 941 transitions. [2024-11-12 11:59:16,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-12 11:59:16,132 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:59:16,132 INFO L218 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] [2024-11-12 11:59:16,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 11:59:16,133 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:59:16,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:59:16,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1130129267, now seen corresponding path program 1 times [2024-11-12 11:59:16,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:59:16,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773148066] [2024-11-12 11:59:16,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:16,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:59:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:16,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-12 11:59:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:16,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-12 11:59:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:16,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 11:59:16,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:59:16,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773148066] [2024-11-12 11:59:16,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773148066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:59:16,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640753257] [2024-11-12 11:59:16,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:16,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:59:16,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:59:16,479 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) [2024-11-12 11:59:16,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 11:59:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:16,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 11:59:16,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:59:16,871 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 11:59:16,871 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:59:16,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640753257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:59:16,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:59:16,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-12 11:59:16,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939310430] [2024-11-12 11:59:16,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:59:16,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 11:59:16,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:59:16,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 11:59:16,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-12 11:59:16,874 INFO L87 Difference]: Start difference. First operand 713 states and 941 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:17,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:59:17,064 INFO L93 Difference]: Finished difference Result 1125 states and 1501 transitions. [2024-11-12 11:59:17,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 11:59:17,064 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2024-11-12 11:59:17,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:59:17,067 INFO L225 Difference]: With dead ends: 1125 [2024-11-12 11:59:17,067 INFO L226 Difference]: Without dead ends: 713 [2024-11-12 11:59:17,069 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-12 11:59:17,069 INFO L435 NwaCegarLoop]: 388 mSDtfsCounter, 34 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 11:59:17,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1682 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 11:59:17,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2024-11-12 11:59:17,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2024-11-12 11:59:17,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 703 states have (on average 1.3143669985775248) internal successors, (924), 706 states have internal predecessors, (924), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-12 11:59:17,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 938 transitions. [2024-11-12 11:59:17,091 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 938 transitions. Word has length 173 [2024-11-12 11:59:17,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:59:17,092 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 938 transitions. [2024-11-12 11:59:17,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:17,092 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 938 transitions. [2024-11-12 11:59:17,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-12 11:59:17,093 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:59:17,093 INFO L218 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] [2024-11-12 11:59:17,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 11:59:17,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-12 11:59:17,294 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:59:17,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:59:17,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1746723856, now seen corresponding path program 1 times [2024-11-12 11:59:17,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:59:17,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975298828] [2024-11-12 11:59:17,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:17,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:59:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:17,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-12 11:59:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:17,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-12 11:59:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:17,656 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 11:59:17,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:59:17,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975298828] [2024-11-12 11:59:17,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975298828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:59:17,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:59:17,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 11:59:17,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57649053] [2024-11-12 11:59:17,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:59:17,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 11:59:17,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:59:17,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 11:59:17,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 11:59:17,657 INFO L87 Difference]: Start difference. First operand 713 states and 938 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:18,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:59:18,019 INFO L93 Difference]: Finished difference Result 1137 states and 1516 transitions. [2024-11-12 11:59:18,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 11:59:18,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2024-11-12 11:59:18,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:59:18,022 INFO L225 Difference]: With dead ends: 1137 [2024-11-12 11:59:18,023 INFO L226 Difference]: Without dead ends: 725 [2024-11-12 11:59:18,024 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 11:59:18,025 INFO L435 NwaCegarLoop]: 390 mSDtfsCounter, 16 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1959 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 11:59:18,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1959 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 11:59:18,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2024-11-12 11:59:18,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 722. [2024-11-12 11:59:18,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 712 states have (on average 1.3103932584269662) internal successors, (933), 715 states have internal predecessors, (933), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-12 11:59:18,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 947 transitions. [2024-11-12 11:59:18,043 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 947 transitions. Word has length 174 [2024-11-12 11:59:18,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:59:18,043 INFO L471 AbstractCegarLoop]: Abstraction has 722 states and 947 transitions. [2024-11-12 11:59:18,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:18,044 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 947 transitions. [2024-11-12 11:59:18,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-12 11:59:18,045 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:59:18,045 INFO L218 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] [2024-11-12 11:59:18,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-12 11:59:18,045 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:59:18,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:59:18,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1466322292, now seen corresponding path program 1 times [2024-11-12 11:59:18,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:59:18,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598212664] [2024-11-12 11:59:18,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:18,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:59:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:18,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-12 11:59:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:18,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-12 11:59:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:18,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 11:59:18,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:59:18,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598212664] [2024-11-12 11:59:18,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598212664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:59:18,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:59:18,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 11:59:18,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89447231] [2024-11-12 11:59:18,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:59:18,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 11:59:18,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:59:18,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 11:59:18,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-12 11:59:18,357 INFO L87 Difference]: Start difference. First operand 722 states and 947 transitions. Second operand has 8 states, 8 states have (on average 20.75) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:18,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:59:18,796 INFO L93 Difference]: Finished difference Result 1161 states and 1543 transitions. [2024-11-12 11:59:18,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 11:59:18,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 175 [2024-11-12 11:59:18,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:59:18,800 INFO L225 Difference]: With dead ends: 1161 [2024-11-12 11:59:18,800 INFO L226 Difference]: Without dead ends: 740 [2024-11-12 11:59:18,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-12 11:59:18,801 INFO L435 NwaCegarLoop]: 380 mSDtfsCounter, 20 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 11:59:18,801 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2253 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 11:59:18,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2024-11-12 11:59:18,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 734. [2024-11-12 11:59:18,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 724 states have (on average 1.3093922651933703) internal successors, (948), 727 states have internal predecessors, (948), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-12 11:59:18,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 962 transitions. [2024-11-12 11:59:18,820 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 962 transitions. Word has length 175 [2024-11-12 11:59:18,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:59:18,821 INFO L471 AbstractCegarLoop]: Abstraction has 734 states and 962 transitions. [2024-11-12 11:59:18,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:18,821 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 962 transitions. [2024-11-12 11:59:18,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-12 11:59:18,822 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:59:18,822 INFO L218 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] [2024-11-12 11:59:18,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-12 11:59:18,822 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:59:18,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:59:18,823 INFO L85 PathProgramCache]: Analyzing trace with hash -241460624, now seen corresponding path program 1 times [2024-11-12 11:59:18,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:59:18,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417112521] [2024-11-12 11:59:18,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:18,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:59:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:19,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-12 11:59:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:19,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-12 11:59:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 11:59:19,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:59:19,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417112521] [2024-11-12 11:59:19,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417112521] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:59:19,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116256425] [2024-11-12 11:59:19,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:19,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:59:19,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:59:19,092 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:59:19,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 11:59:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:19,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 11:59:19,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:59:19,625 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:59:19,626 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:59:19,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116256425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:59:19,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:59:19,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-11-12 11:59:19,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701227011] [2024-11-12 11:59:19,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:59:19,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:59:19,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:59:19,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:59:19,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 11:59:19,628 INFO L87 Difference]: Start difference. First operand 734 states and 962 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 11:59:19,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:59:19,677 INFO L93 Difference]: Finished difference Result 1369 states and 1800 transitions. [2024-11-12 11:59:19,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 11:59:19,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 175 [2024-11-12 11:59:19,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:59:19,681 INFO L225 Difference]: With dead ends: 1369 [2024-11-12 11:59:19,681 INFO L226 Difference]: Without dead ends: 737 [2024-11-12 11:59:19,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 11:59:19,682 INFO L435 NwaCegarLoop]: 403 mSDtfsCounter, 0 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 11:59:19,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1205 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 11:59:19,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2024-11-12 11:59:19,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 737. [2024-11-12 11:59:19,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 726 states have (on average 1.3099173553719008) internal successors, (951), 730 states have internal predecessors, (951), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-12 11:59:19,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 966 transitions. [2024-11-12 11:59:19,706 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 966 transitions. Word has length 175 [2024-11-12 11:59:19,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:59:19,707 INFO L471 AbstractCegarLoop]: Abstraction has 737 states and 966 transitions. [2024-11-12 11:59:19,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 11:59:19,707 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 966 transitions. [2024-11-12 11:59:19,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-12 11:59:19,708 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:59:19,708 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-12 11:59:19,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 11:59:19,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-12 11:59:19,909 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:59:19,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:59:19,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1808455278, now seen corresponding path program 1 times [2024-11-12 11:59:19,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:59:19,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501646097] [2024-11-12 11:59:19,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:19,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:59:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:20,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-12 11:59:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:20,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-12 11:59:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:20,289 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 11:59:20,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:59:20,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501646097] [2024-11-12 11:59:20,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501646097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:59:20,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332749242] [2024-11-12 11:59:20,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:20,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:59:20,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:59:20,294 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:59:20,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 11:59:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:20,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 11:59:20,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:59:35,687 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-12 11:59:35,689 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:59:35,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332749242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:59:35,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:59:35,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-12 11:59:35,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820819681] [2024-11-12 11:59:35,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:59:35,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 11:59:35,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:59:35,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 11:59:35,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-12 11:59:35,691 INFO L87 Difference]: Start difference. First operand 737 states and 966 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:40,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-12 11:59:42,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-12 11:59:47,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.77s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-12 11:59:47,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:59:47,844 INFO L93 Difference]: Finished difference Result 1185 states and 1571 transitions. [2024-11-12 11:59:47,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 11:59:47,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 177 [2024-11-12 11:59:47,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:59:47,847 INFO L225 Difference]: With dead ends: 1185 [2024-11-12 11:59:47,847 INFO L226 Difference]: Without dead ends: 752 [2024-11-12 11:59:47,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-12 11:59:47,850 INFO L435 NwaCegarLoop]: 392 mSDtfsCounter, 12 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2003 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2024-11-12 11:59:47,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2003 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 423 Invalid, 1 Unknown, 0 Unchecked, 12.1s Time] [2024-11-12 11:59:47,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2024-11-12 11:59:47,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 737. [2024-11-12 11:59:47,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 726 states have (on average 1.3099173553719008) internal successors, (951), 730 states have internal predecessors, (951), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-12 11:59:47,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 966 transitions. [2024-11-12 11:59:47,873 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 966 transitions. Word has length 177 [2024-11-12 11:59:47,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:59:47,873 INFO L471 AbstractCegarLoop]: Abstraction has 737 states and 966 transitions. [2024-11-12 11:59:47,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:47,873 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 966 transitions. [2024-11-12 11:59:47,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-12 11:59:47,875 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:59:47,875 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-12 11:59:47,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-12 11:59:48,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:59:48,080 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:59:48,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:59:48,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1239154370, now seen corresponding path program 1 times [2024-11-12 11:59:48,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:59:48,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383018146] [2024-11-12 11:59:48,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:48,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:59:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:48,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-12 11:59:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:48,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-12 11:59:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:48,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-12 11:59:48,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:59:48,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383018146] [2024-11-12 11:59:48,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383018146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:59:48,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:59:48,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-12 11:59:48,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326513383] [2024-11-12 11:59:48,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:59:48,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 11:59:48,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:59:48,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 11:59:48,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-12 11:59:48,495 INFO L87 Difference]: Start difference. First operand 737 states and 966 transitions. Second operand has 10 states, 10 states have (on average 16.8) internal successors, (168), 9 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:49,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:59:49,118 INFO L93 Difference]: Finished difference Result 1200 states and 1589 transitions. [2024-11-12 11:59:49,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 11:59:49,119 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.8) internal successors, (168), 9 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 178 [2024-11-12 11:59:49,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:59:49,122 INFO L225 Difference]: With dead ends: 1200 [2024-11-12 11:59:49,122 INFO L226 Difference]: Without dead ends: 767 [2024-11-12 11:59:49,123 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-12 11:59:49,123 INFO L435 NwaCegarLoop]: 380 mSDtfsCounter, 28 mSDsluCounter, 2576 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2956 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-12 11:59:49,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 2956 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-12 11:59:49,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2024-11-12 11:59:49,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 758. [2024-11-12 11:59:49,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 747 states have (on average 1.3092369477911647) internal successors, (978), 751 states have internal predecessors, (978), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-12 11:59:49,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 993 transitions. [2024-11-12 11:59:49,152 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 993 transitions. Word has length 178 [2024-11-12 11:59:49,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:59:49,153 INFO L471 AbstractCegarLoop]: Abstraction has 758 states and 993 transitions. [2024-11-12 11:59:49,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.8) internal successors, (168), 9 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:49,153 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 993 transitions. [2024-11-12 11:59:49,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-12 11:59:49,155 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:59:49,155 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-12 11:59:49,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-12 11:59:49,155 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:59:49,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:59:49,155 INFO L85 PathProgramCache]: Analyzing trace with hash 555160414, now seen corresponding path program 1 times [2024-11-12 11:59:49,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:59:49,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679956344] [2024-11-12 11:59:49,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:49,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:59:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:49,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-12 11:59:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:49,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-12 11:59:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:49,627 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 11:59:49,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:59:49,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679956344] [2024-11-12 11:59:49,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679956344] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:59:49,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383977550] [2024-11-12 11:59:49,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:49,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:59:49,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:59:49,629 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:59:49,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 11:59:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:50,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-12 11:59:50,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:59:50,144 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-12 11:59:50,144 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:59:50,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383977550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:59:50,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:59:50,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-12 11:59:50,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198892592] [2024-11-12 11:59:50,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:59:50,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 11:59:50,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:59:50,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 11:59:50,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-12 11:59:50,146 INFO L87 Difference]: Start difference. First operand 758 states and 993 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:50,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:59:50,447 INFO L93 Difference]: Finished difference Result 1227 states and 1625 transitions. [2024-11-12 11:59:50,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 11:59:50,448 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 178 [2024-11-12 11:59:50,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:59:50,451 INFO L225 Difference]: With dead ends: 1227 [2024-11-12 11:59:50,451 INFO L226 Difference]: Without dead ends: 773 [2024-11-12 11:59:50,452 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-12 11:59:50,452 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 17 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 11:59:50,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2010 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 11:59:50,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2024-11-12 11:59:50,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 764. [2024-11-12 11:59:50,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 753 states have (on average 1.3067729083665338) internal successors, (984), 757 states have internal predecessors, (984), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-12 11:59:50,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 999 transitions. [2024-11-12 11:59:50,471 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 999 transitions. Word has length 178 [2024-11-12 11:59:50,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:59:50,471 INFO L471 AbstractCegarLoop]: Abstraction has 764 states and 999 transitions. [2024-11-12 11:59:50,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:50,472 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 999 transitions. [2024-11-12 11:59:50,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-12 11:59:50,473 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:59:50,473 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-12 11:59:50,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-12 11:59:50,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:59:50,674 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:59:50,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:59:50,675 INFO L85 PathProgramCache]: Analyzing trace with hash 50745154, now seen corresponding path program 1 times [2024-11-12 11:59:50,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:59:50,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271980715] [2024-11-12 11:59:50,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:50,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:59:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:51,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-12 11:59:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:51,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-12 11:59:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:51,154 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-12 11:59:51,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:59:51,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271980715] [2024-11-12 11:59:51,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271980715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:59:51,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:59:51,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-12 11:59:51,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527592940] [2024-11-12 11:59:51,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:59:51,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 11:59:51,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:59:51,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 11:59:51,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-12 11:59:51,156 INFO L87 Difference]: Start difference. First operand 764 states and 999 transitions. Second operand has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 10 states have internal predecessors, (169), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:51,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:59:51,792 INFO L93 Difference]: Finished difference Result 1251 states and 1655 transitions. [2024-11-12 11:59:51,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 11:59:51,792 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 10 states have internal predecessors, (169), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 179 [2024-11-12 11:59:51,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:59:51,795 INFO L225 Difference]: With dead ends: 1251 [2024-11-12 11:59:51,795 INFO L226 Difference]: Without dead ends: 791 [2024-11-12 11:59:51,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-12 11:59:51,797 INFO L435 NwaCegarLoop]: 387 mSDtfsCounter, 34 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 2656 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-12 11:59:51,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 2656 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-12 11:59:51,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2024-11-12 11:59:51,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 773. [2024-11-12 11:59:51,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 762 states have (on average 1.3031496062992125) internal successors, (993), 766 states have internal predecessors, (993), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-12 11:59:51,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1008 transitions. [2024-11-12 11:59:51,816 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1008 transitions. Word has length 179 [2024-11-12 11:59:51,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:59:51,816 INFO L471 AbstractCegarLoop]: Abstraction has 773 states and 1008 transitions. [2024-11-12 11:59:51,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 10 states have internal predecessors, (169), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 11:59:51,816 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1008 transitions. [2024-11-12 11:59:51,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-12 11:59:51,818 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:59:51,818 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-12 11:59:51,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-12 11:59:51,818 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:59:51,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:59:51,819 INFO L85 PathProgramCache]: Analyzing trace with hash 321768998, now seen corresponding path program 1 times [2024-11-12 11:59:51,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:59:51,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969322273] [2024-11-12 11:59:51,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:51,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:59:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:52,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-12 11:59:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:52,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-12 11:59:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:52,171 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 11:59:52,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:59:52,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969322273] [2024-11-12 11:59:52,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969322273] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:59:52,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935752611] [2024-11-12 11:59:52,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:59:52,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:59:52,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:59:52,174 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:59:52,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 11:59:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:59:52,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-12 11:59:52,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:59:52,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-12 11:59:52,844 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 [2024-11-12 11:59:52,862 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2024-11-12 11:59:52,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2024-11-12 11:59:52,916 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 18 treesize of output 10 [2024-11-12 11:59:53,025 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-12 11:59:53,026 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33