./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/recursified_loop-crafted/recursified_simple_array_index_value_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 ../../../trunk/examples/svcomp/recursified_loop-crafted/recursified_simple_array_index_value_1-1.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 affe6b2992f7714f4bd95d6011e70945dc7608cfcd3847461bdcd80eeea00f05 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 18:42:59,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 18:42:59,623 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 18:42:59,630 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 18:42:59,632 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 18:42:59,672 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 18:42:59,672 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 18:42:59,673 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 18:42:59,673 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 18:42:59,673 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 18:42:59,674 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 18:42:59,674 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 18:42:59,674 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 18:42:59,675 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 18:42:59,675 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 18:42:59,675 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 18:42:59,675 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 18:42:59,676 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 18:42:59,676 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 18:42:59,676 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 18:42:59,676 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 18:42:59,677 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 18:42:59,677 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 18:42:59,677 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 18:42:59,678 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 18:42:59,678 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 18:42:59,678 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 18:42:59,678 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 18:42:59,679 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 18:42:59,679 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 18:42:59,679 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 18:42:59,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:42:59,680 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 18:42:59,680 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 18:42:59,680 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 18:42:59,680 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 18:42:59,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 18:42:59,681 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 18:42:59,681 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 18:42:59,681 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 18:42:59,681 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 18:42:59,682 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 18:42:59,682 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> affe6b2992f7714f4bd95d6011e70945dc7608cfcd3847461bdcd80eeea00f05 [2023-11-22 18:42:59,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 18:42:59,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 18:42:59,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 18:42:59,935 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 18:42:59,935 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 18:42:59,937 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursified_loop-crafted/recursified_simple_array_index_value_1-1.i [2023-11-22 18:43:00,920 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 18:43:01,088 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 18:43:01,089 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-crafted/recursified_simple_array_index_value_1-1.i [2023-11-22 18:43:01,096 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e39b0d859/ea5b5f76fca24061a92957f5ec8f560a/FLAG7da133e4f [2023-11-22 18:43:01,113 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e39b0d859/ea5b5f76fca24061a92957f5ec8f560a [2023-11-22 18:43:01,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 18:43:01,117 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 18:43:01,118 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 18:43:01,118 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 18:43:01,122 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 18:43:01,124 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:43:01" (1/1) ... [2023-11-22 18:43:01,125 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ceebda9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:01, skipping insertion in model container [2023-11-22 18:43:01,125 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:43:01" (1/1) ... [2023-11-22 18:43:01,151 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 18:43:01,253 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-crafted/recursified_simple_array_index_value_1-1.i[1692,1705] [2023-11-22 18:43:01,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:43:01,275 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 18:43:01,283 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-crafted/recursified_simple_array_index_value_1-1.i[1692,1705] [2023-11-22 18:43:01,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:43:01,298 INFO L206 MainTranslator]: Completed translation [2023-11-22 18:43:01,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:01 WrapperNode [2023-11-22 18:43:01,298 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 18:43:01,299 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 18:43:01,299 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 18:43:01,299 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 18:43:01,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:01" (1/1) ... [2023-11-22 18:43:01,309 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:01" (1/1) ... [2023-11-22 18:43:01,319 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2023-11-22 18:43:01,319 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 18:43:01,320 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 18:43:01,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 18:43:01,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 18:43:01,328 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:01" (1/1) ... [2023-11-22 18:43:01,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:01" (1/1) ... [2023-11-22 18:43:01,337 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:01" (1/1) ... [2023-11-22 18:43:01,347 INFO L189 HeapSplitter]: Split 18 memory accesses to 3 slices as follows [2, 13, 3] [2023-11-22 18:43:01,348 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:01" (1/1) ... [2023-11-22 18:43:01,348 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:01" (1/1) ... [2023-11-22 18:43:01,352 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:01" (1/1) ... [2023-11-22 18:43:01,353 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:01" (1/1) ... [2023-11-22 18:43:01,354 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:01" (1/1) ... [2023-11-22 18:43:01,354 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:01" (1/1) ... [2023-11-22 18:43:01,356 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 18:43:01,356 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 18:43:01,356 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 18:43:01,356 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 18:43:01,357 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:01" (1/1) ... [2023-11-22 18:43:01,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:43:01,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:43:01,378 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 18:43:01,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 18:43:01,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 18:43:01,413 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_32_to_33_0 [2023-11-22 18:43:01,413 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_32_to_33_0 [2023-11-22 18:43:01,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 18:43:01,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-22 18:43:01,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-22 18:43:01,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 18:43:01,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-22 18:43:01,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-22 18:43:01,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-22 18:43:01,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 18:43:01,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 18:43:01,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-22 18:43:01,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-22 18:43:01,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-22 18:43:01,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-22 18:43:01,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-22 18:43:01,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 18:43:01,415 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_36_to_40_0 [2023-11-22 18:43:01,415 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_36_to_40_0 [2023-11-22 18:43:01,489 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 18:43:01,490 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 18:43:01,607 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 18:43:01,623 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 18:43:01,623 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-22 18:43:01,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:43:01 BoogieIcfgContainer [2023-11-22 18:43:01,623 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 18:43:01,625 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 18:43:01,625 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 18:43:01,627 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 18:43:01,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:43:01" (1/3) ... [2023-11-22 18:43:01,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653c2b6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:43:01, skipping insertion in model container [2023-11-22 18:43:01,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:01" (2/3) ... [2023-11-22 18:43:01,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653c2b6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:43:01, skipping insertion in model container [2023-11-22 18:43:01,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:43:01" (3/3) ... [2023-11-22 18:43:01,629 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_simple_array_index_value_1-1.i [2023-11-22 18:43:01,643 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 18:43:01,643 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 18:43:01,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 18:43:01,689 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@245181c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 18:43:01,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 18:43:01,692 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 20 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-22 18:43:01,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-22 18:43:01,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:43:01,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:43:01,698 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:43:01,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:43:01,712 INFO L85 PathProgramCache]: Analyzing trace with hash -861965109, now seen corresponding path program 1 times [2023-11-22 18:43:01,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:43:01,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025631262] [2023-11-22 18:43:01,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:43:01,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:43:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:02,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:02,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:43:02,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:43:02,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025631262] [2023-11-22 18:43:02,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025631262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:43:02,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:43:02,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:43:02,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690602593] [2023-11-22 18:43:02,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:43:02,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 18:43:02,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:43:02,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 18:43:02,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:43:02,218 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 20 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 18:43:02,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:43:02,399 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2023-11-22 18:43:02,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:43:02,401 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-22 18:43:02,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:43:02,406 INFO L225 Difference]: With dead ends: 54 [2023-11-22 18:43:02,406 INFO L226 Difference]: Without dead ends: 26 [2023-11-22 18:43:02,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:43:02,410 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 16 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:43:02,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 40 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:43:02,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-22 18:43:02,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-22 18:43:02,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-22 18:43:02,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2023-11-22 18:43:02,436 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 15 [2023-11-22 18:43:02,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:43:02,436 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2023-11-22 18:43:02,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 18:43:02,437 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2023-11-22 18:43:02,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-22 18:43:02,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:43:02,438 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:43:02,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 18:43:02,439 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:43:02,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:43:02,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1296273823, now seen corresponding path program 1 times [2023-11-22 18:43:02,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:43:02,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302049915] [2023-11-22 18:43:02,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:43:02,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:43:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:02,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:02,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:02,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-22 18:43:02,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:43:02,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302049915] [2023-11-22 18:43:02,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302049915] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:43:02,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545561445] [2023-11-22 18:43:02,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:43:02,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:43:02,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:43:02,913 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) [2023-11-22 18:43:02,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 18:43:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:02,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-22 18:43:02,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:43:03,035 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 [2023-11-22 18:43:03,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 70 [2023-11-22 18:43:03,131 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 24 treesize of output 23 [2023-11-22 18:43:03,150 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 25 treesize of output 24 [2023-11-22 18:43:03,252 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 7 treesize of output 3 [2023-11-22 18:43:03,269 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 [2023-11-22 18:43:03,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:43:03,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:43:03,866 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:43:03,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 88 [2023-11-22 18:43:03,907 INFO L349 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2023-11-22 18:43:03,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 55 [2023-11-22 18:43:03,923 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:43:03,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 26 [2023-11-22 18:43:04,164 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:43:04,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 100 [2023-11-22 18:43:04,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 treesize of output 5 [2023-11-22 18:43:04,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 50 treesize of output 48 [2023-11-22 18:43:04,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 46 treesize of output 44 [2023-11-22 18:43:04,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:43:04,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545561445] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:43:04,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:43:04,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 14] total 31 [2023-11-22 18:43:04,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291160900] [2023-11-22 18:43:04,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:43:04,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-22 18:43:04,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:43:04,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-22 18:43:04,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=908, Unknown=0, NotChecked=0, Total=992 [2023-11-22 18:43:04,339 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 32 states, 25 states have (on average 1.48) internal successors, (37), 23 states have internal predecessors, (37), 10 states have call successors, (12), 9 states have call predecessors, (12), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-22 18:43:04,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:43:04,965 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2023-11-22 18:43:04,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-22 18:43:04,966 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 25 states have (on average 1.48) internal successors, (37), 23 states have internal predecessors, (37), 10 states have call successors, (12), 9 states have call predecessors, (12), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 20 [2023-11-22 18:43:04,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:43:04,967 INFO L225 Difference]: With dead ends: 52 [2023-11-22 18:43:04,967 INFO L226 Difference]: Without dead ends: 33 [2023-11-22 18:43:04,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=160, Invalid=1400, Unknown=0, NotChecked=0, Total=1560 [2023-11-22 18:43:04,969 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 36 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:43:04,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 125 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 18:43:04,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-22 18:43:04,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2023-11-22 18:43:04,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-22 18:43:04,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2023-11-22 18:43:04,974 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 20 [2023-11-22 18:43:04,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:43:04,974 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2023-11-22 18:43:04,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 25 states have (on average 1.48) internal successors, (37), 23 states have internal predecessors, (37), 10 states have call successors, (12), 9 states have call predecessors, (12), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-22 18:43:04,975 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2023-11-22 18:43:04,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-22 18:43:04,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:43:04,975 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:43:04,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-22 18:43:05,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:43:05,190 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:43:05,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:43:05,190 INFO L85 PathProgramCache]: Analyzing trace with hash 963661205, now seen corresponding path program 2 times [2023-11-22 18:43:05,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:43:05,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186453708] [2023-11-22 18:43:05,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:43:05,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:43:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:05,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:05,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:05,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:05,802 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 18:43:05,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:43:05,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186453708] [2023-11-22 18:43:05,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186453708] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:43:05,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634874263] [2023-11-22 18:43:05,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:43:05,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:43:05,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:43:05,806 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) [2023-11-22 18:43:05,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 18:43:05,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 18:43:05,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:43:05,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-22 18:43:05,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:43:05,885 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 [2023-11-22 18:43:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 18:43:06,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:43:06,558 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:43:06,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634874263] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:43:06,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:43:06,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 13] total 30 [2023-11-22 18:43:06,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872588650] [2023-11-22 18:43:06,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:43:06,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-22 18:43:06,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:43:06,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-22 18:43:06,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=799, Unknown=0, NotChecked=0, Total=930 [2023-11-22 18:43:06,560 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 31 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 8 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-22 18:43:07,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:43:07,151 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2023-11-22 18:43:07,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-22 18:43:07,151 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 8 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 25 [2023-11-22 18:43:07,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:43:07,152 INFO L225 Difference]: With dead ends: 69 [2023-11-22 18:43:07,152 INFO L226 Difference]: Without dead ends: 48 [2023-11-22 18:43:07,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=322, Invalid=1748, Unknown=0, NotChecked=0, Total=2070 [2023-11-22 18:43:07,154 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 61 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:43:07,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 74 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 18:43:07,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-22 18:43:07,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2023-11-22 18:43:07,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 25 states have (on average 1.2) internal successors, (30), 27 states have internal predecessors, (30), 8 states have call successors, (8), 5 states have call predecessors, (8), 8 states have return successors, (10), 9 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-22 18:43:07,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2023-11-22 18:43:07,161 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 25 [2023-11-22 18:43:07,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:43:07,161 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2023-11-22 18:43:07,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 8 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-22 18:43:07,162 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2023-11-22 18:43:07,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-22 18:43:07,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:43:07,163 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:43:07,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 18:43:07,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-22 18:43:07,377 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:43:07,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:43:07,377 INFO L85 PathProgramCache]: Analyzing trace with hash -799995863, now seen corresponding path program 3 times [2023-11-22 18:43:07,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:43:07,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607723856] [2023-11-22 18:43:07,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:43:07,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:43:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:08,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:08,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:09,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:09,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:09,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:09,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:10,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:10,197 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-22 18:43:10,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:43:10,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607723856] [2023-11-22 18:43:10,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607723856] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:43:10,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64198428] [2023-11-22 18:43:10,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 18:43:10,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:43:10,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:43:10,199 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) [2023-11-22 18:43:10,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 18:43:10,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-11-22 18:43:10,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:43:10,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 95 conjunts are in the unsatisfiable core [2023-11-22 18:43:10,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:43:10,860 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 [2023-11-22 18:43:11,344 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-22 18:43:11,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:43:13,913 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:43:13,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64198428] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:43:13,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:43:13,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13, 29] total 63 [2023-11-22 18:43:13,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279082331] [2023-11-22 18:43:13,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:43:13,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-11-22 18:43:13,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:43:13,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-11-22 18:43:13,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=3643, Unknown=0, NotChecked=0, Total=4032 [2023-11-22 18:43:13,917 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 64 states, 48 states have (on average 1.3125) internal successors, (63), 54 states have internal predecessors, (63), 17 states have call successors, (18), 10 states have call predecessors, (18), 21 states have return successors, (21), 19 states have call predecessors, (21), 16 states have call successors, (21) [2023-11-22 18:43:18,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:43:18,126 INFO L93 Difference]: Finished difference Result 139 states and 193 transitions. [2023-11-22 18:43:18,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-22 18:43:18,126 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 48 states have (on average 1.3125) internal successors, (63), 54 states have internal predecessors, (63), 17 states have call successors, (18), 10 states have call predecessors, (18), 21 states have return successors, (21), 19 states have call predecessors, (21), 16 states have call successors, (21) Word has length 45 [2023-11-22 18:43:18,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:43:18,128 INFO L225 Difference]: With dead ends: 139 [2023-11-22 18:43:18,128 INFO L226 Difference]: Without dead ends: 112 [2023-11-22 18:43:18,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3023 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1745, Invalid=11827, Unknown=0, NotChecked=0, Total=13572 [2023-11-22 18:43:18,132 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 291 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 559 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 559 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:43:18,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 245 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [559 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-22 18:43:18,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-22 18:43:18,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 70. [2023-11-22 18:43:18,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 43 states have internal predecessors, (50), 12 states have call successors, (12), 9 states have call predecessors, (12), 16 states have return successors, (18), 17 states have call predecessors, (18), 10 states have call successors, (18) [2023-11-22 18:43:18,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 80 transitions. [2023-11-22 18:43:18,146 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 80 transitions. Word has length 45 [2023-11-22 18:43:18,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:43:18,146 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 80 transitions. [2023-11-22 18:43:18,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 48 states have (on average 1.3125) internal successors, (63), 54 states have internal predecessors, (63), 17 states have call successors, (18), 10 states have call predecessors, (18), 21 states have return successors, (21), 19 states have call predecessors, (21), 16 states have call successors, (21) [2023-11-22 18:43:18,146 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 80 transitions. [2023-11-22 18:43:18,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-22 18:43:18,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:43:18,148 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:43:18,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-22 18:43:18,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:43:18,353 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:43:18,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:43:18,354 INFO L85 PathProgramCache]: Analyzing trace with hash 605856081, now seen corresponding path program 4 times [2023-11-22 18:43:18,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:43:18,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560677707] [2023-11-22 18:43:18,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:43:18,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:43:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:20,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:22,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:24,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:26,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:27,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:28,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:29,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:30,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:31,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:31,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:31,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:32,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:32,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:32,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:32,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:33,035 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-22 18:43:33,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:43:33,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560677707] [2023-11-22 18:43:33,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560677707] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:43:33,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15809908] [2023-11-22 18:43:33,036 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-22 18:43:33,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:43:33,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:43:33,084 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) [2023-11-22 18:43:33,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 18:43:33,372 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-22 18:43:33,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:43:33,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 187 conjunts are in the unsatisfiable core [2023-11-22 18:43:33,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:43:33,390 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 [2023-11-22 18:43:34,797 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2023-11-22 18:43:34,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:43:44,967 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:43:44,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15809908] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:43:44,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:43:44,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 21, 61] total 127 [2023-11-22 18:43:44,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062379502] [2023-11-22 18:43:44,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:43:44,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2023-11-22 18:43:44,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:43:44,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2023-11-22 18:43:44,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1233, Invalid=15023, Unknown=0, NotChecked=0, Total=16256 [2023-11-22 18:43:44,974 INFO L87 Difference]: Start difference. First operand 70 states and 80 transitions. Second operand has 128 states, 96 states have (on average 1.2395833333333333) internal successors, (119), 110 states have internal predecessors, (119), 33 states have call successors, (34), 18 states have call predecessors, (34), 45 states have return successors, (45), 43 states have call predecessors, (45), 32 states have call successors, (45) [2023-11-22 18:44:31,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:44:31,450 INFO L93 Difference]: Finished difference Result 407 states and 577 transitions. [2023-11-22 18:44:31,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2023-11-22 18:44:31,450 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 96 states have (on average 1.2395833333333333) internal successors, (119), 110 states have internal predecessors, (119), 33 states have call successors, (34), 18 states have call predecessors, (34), 45 states have return successors, (45), 43 states have call predecessors, (45), 32 states have call successors, (45) Word has length 85 [2023-11-22 18:44:31,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:44:31,455 INFO L225 Difference]: With dead ends: 407 [2023-11-22 18:44:31,456 INFO L226 Difference]: Without dead ends: 336 [2023-11-22 18:44:31,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24449 ImplicationChecksByTransitivity, 48.8s TimeCoverageRelationStatistics Valid=11571, Invalid=81149, Unknown=0, NotChecked=0, Total=92720 [2023-11-22 18:44:31,465 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1897 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 3101 mSolverCounterSat, 2846 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1899 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 5947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2846 IncrementalHoareTripleChecker+Valid, 3101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:44:31,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1899 Valid, 821 Invalid, 5947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2846 Valid, 3101 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-22 18:44:31,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-11-22 18:44:31,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 126. [2023-11-22 18:44:31,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 73 states have (on average 1.2328767123287672) internal successors, (90), 75 states have internal predecessors, (90), 20 states have call successors, (20), 17 states have call predecessors, (20), 32 states have return successors, (34), 33 states have call predecessors, (34), 18 states have call successors, (34) [2023-11-22 18:44:31,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 144 transitions. [2023-11-22 18:44:31,497 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 144 transitions. Word has length 85 [2023-11-22 18:44:31,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:44:31,498 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 144 transitions. [2023-11-22 18:44:31,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 96 states have (on average 1.2395833333333333) internal successors, (119), 110 states have internal predecessors, (119), 33 states have call successors, (34), 18 states have call predecessors, (34), 45 states have return successors, (45), 43 states have call predecessors, (45), 32 states have call successors, (45) [2023-11-22 18:44:31,498 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 144 transitions. [2023-11-22 18:44:31,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-22 18:44:31,502 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:44:31,502 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:44:31,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 18:44:31,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:44:31,710 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:44:31,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:44:31,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1236507743, now seen corresponding path program 5 times [2023-11-22 18:44:31,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:44:31,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363727894] [2023-11-22 18:44:31,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:44:31,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:44:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:39,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:48,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:44:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:56,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:44:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:45:04,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:45:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:45:10,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:45:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:45:17,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:45:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:45:23,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:45:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:45:28,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:45:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:45:33,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:45:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:45:38,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:45:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:45:42,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:45:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:45:46,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:45:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:45:50,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:45:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:45:53,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:45:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:45:56,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:45:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:45:58,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:45:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:00,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:46:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:02,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:46:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:04,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:46:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:06,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:46:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:07,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:46:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:08,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:46:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:09,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:46:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:10,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:46:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:10,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:46:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:11,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:46:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:11,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:46:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:12,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:46:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:12,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:46:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:12,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:46:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:46:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-11-22 18:46:13,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:46:13,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363727894] [2023-11-22 18:46:13,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363727894] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:46:13,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654137390] [2023-11-22 18:46:13,412 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-22 18:46:13,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:46:13,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:46:13,414 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) [2023-11-22 18:46:13,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Killed by 15