/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/memory-model/2SB.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 14:56:59,940 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 14:57:00,063 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 14:57:00,067 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 14:57:00,067 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 14:57:00,105 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 14:57:00,105 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 14:57:00,105 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 14:57:00,106 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 14:57:00,109 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 14:57:00,109 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 14:57:00,109 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 14:57:00,110 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 14:57:00,111 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 14:57:00,111 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 14:57:00,111 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 14:57:00,111 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 14:57:00,111 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 14:57:00,112 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 14:57:00,112 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 14:57:00,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 14:57:00,112 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 14:57:00,112 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 14:57:00,113 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 14:57:00,113 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 14:57:00,113 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 14:57:00,113 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 14:57:00,113 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 14:57:00,114 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 14:57:00,114 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 14:57:00,114 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 14:57:00,115 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 14:57:00,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:57:00,115 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 14:57:00,115 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 14:57:00,115 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 14:57:00,115 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 14:57:00,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 14:57:00,115 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 14:57:00,115 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 14:57:00,116 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 14:57:00,116 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 14:57:00,116 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 14:57:00,116 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 14:57:00,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 14:57:00,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 14:57:00,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 14:57:00,486 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 14:57:00,486 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 14:57:00,487 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memory-model/2SB.i [2023-12-20 14:57:01,605 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 14:57:01,799 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 14:57:01,799 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/memory-model/2SB.i [2023-12-20 14:57:01,810 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49686259f/878cdff2c61946c99663175fddee61ee/FLAGc6dcfd70f [2023-12-20 14:57:01,826 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49686259f/878cdff2c61946c99663175fddee61ee [2023-12-20 14:57:01,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 14:57:01,829 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 14:57:01,830 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 14:57:01,830 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 14:57:01,833 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 14:57:01,834 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:57:01" (1/1) ... [2023-12-20 14:57:01,835 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@528d59bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:57:01, skipping insertion in model container [2023-12-20 14:57:01,835 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:57:01" (1/1) ... [2023-12-20 14:57:01,877 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 14:57:02,096 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/memory-model/2SB.i[13547,13560] [2023-12-20 14:57:02,100 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:57:02,107 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 14:57:02,157 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/memory-model/2SB.i[13547,13560] [2023-12-20 14:57:02,158 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:57:02,182 INFO L206 MainTranslator]: Completed translation [2023-12-20 14:57:02,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:57:02 WrapperNode [2023-12-20 14:57:02,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 14:57:02,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 14:57:02,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 14:57:02,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 14:57:02,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:57:02" (1/1) ... [2023-12-20 14:57:02,206 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:57:02" (1/1) ... [2023-12-20 14:57:02,249 INFO L138 Inliner]: procedures = 28, calls = 405, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 920 [2023-12-20 14:57:02,250 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 14:57:02,250 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 14:57:02,250 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 14:57:02,250 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 14:57:02,259 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:57:02" (1/1) ... [2023-12-20 14:57:02,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:57:02" (1/1) ... [2023-12-20 14:57:02,277 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:57:02" (1/1) ... [2023-12-20 14:57:02,321 INFO L175 MemorySlicer]: Split 302 memory accesses to 14 slices as follows [4, 48, 10, 76, 12, 11, 40, 37, 3, 10, 10, 13, 15, 13]. 25 percent of accesses are in the largest equivalence class. The 16 initializations are split as follows [0, 0, 0, 0, 5, 0, 0, 0, 0, 1, 0, 5, 0, 5]. The 119 writes are split as follows [3, 10, 5, 40, 2, 5, 20, 15, 2, 3, 5, 2, 5, 2]. [2023-12-20 14:57:02,322 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:57:02" (1/1) ... [2023-12-20 14:57:02,322 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:57:02" (1/1) ... [2023-12-20 14:57:02,364 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:57:02" (1/1) ... [2023-12-20 14:57:02,369 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:57:02" (1/1) ... [2023-12-20 14:57:02,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:57:02" (1/1) ... [2023-12-20 14:57:02,393 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:57:02" (1/1) ... [2023-12-20 14:57:02,400 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 14:57:02,401 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 14:57:02,401 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 14:57:02,401 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 14:57:02,402 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:57:02" (1/1) ... [2023-12-20 14:57:02,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:57:02,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:57:02,441 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) [2023-12-20 14:57:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_write [2023-12-20 14:57:02,465 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_write [2023-12-20 14:57:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_headerT [2023-12-20 14:57:02,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_nondet_headerT [2023-12-20 14:57:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure stepWriteBuffer [2023-12-20 14:57:02,465 INFO L138 BoogieDeclarations]: Found implementation of procedure stepWriteBuffer [2023-12-20 14:57:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_read [2023-12-20 14:57:02,465 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_read [2023-12-20 14:57:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-12-20 14:57:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-12-20 14:57:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-12-20 14:57:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2023-12-20 14:57:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2023-12-20 14:57:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2023-12-20 14:57:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2023-12-20 14:57:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2023-12-20 14:57:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2023-12-20 14:57:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2023-12-20 14:57:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2023-12-20 14:57:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#11 [2023-12-20 14:57:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#12 [2023-12-20 14:57:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#13 [2023-12-20 14:57:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-20 14:57:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-20 14:57:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-20 14:57:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-20 14:57:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-20 14:57:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-20 14:57:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-12-20 14:57:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-12-20 14:57:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-12-20 14:57:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-12-20 14:57:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-12-20 14:57:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-12-20 14:57:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-12-20 14:57:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-12-20 14:57:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-12-20 14:57:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-20 14:57:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-20 14:57:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-20 14:57:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-20 14:57:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-20 14:57:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-20 14:57:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-12-20 14:57:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-12-20 14:57:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-12-20 14:57:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-12-20 14:57:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-12-20 14:57:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-12-20 14:57:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-12-20 14:57:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-12-20 14:57:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure store_buffering_2_conditions [2023-12-20 14:57:02,469 INFO L138 BoogieDeclarations]: Found implementation of procedure store_buffering_2_conditions [2023-12-20 14:57:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 14:57:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-20 14:57:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-20 14:57:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-20 14:57:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-20 14:57:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-20 14:57:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-20 14:57:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-20 14:57:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-20 14:57:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-20 14:57:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-20 14:57:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-20 14:57:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-20 14:57:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-20 14:57:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure initWriteBuffer [2023-12-20 14:57:02,471 INFO L138 BoogieDeclarations]: Found implementation of procedure initWriteBuffer [2023-12-20 14:57:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_fence [2023-12-20 14:57:02,471 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_fence [2023-12-20 14:57:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 14:57:02,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 14:57:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-20 14:57:02,464 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 [2023-12-20 14:57:02,673 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 14:57:02,676 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 14:57:03,712 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 14:57:03,759 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 14:57:03,777 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-12-20 14:57:03,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:57:03 BoogieIcfgContainer [2023-12-20 14:57:03,778 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 14:57:03,779 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 14:57:03,796 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 14:57:03,798 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 14:57:03,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:57:01" (1/3) ... [2023-12-20 14:57:03,799 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319e3c50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:57:03, skipping insertion in model container [2023-12-20 14:57:03,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:57:02" (2/3) ... [2023-12-20 14:57:03,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319e3c50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:57:03, skipping insertion in model container [2023-12-20 14:57:03,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:57:03" (3/3) ... [2023-12-20 14:57:03,802 INFO L112 eAbstractionObserver]: Analyzing ICFG 2SB.i [2023-12-20 14:57:03,815 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 14:57:03,817 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 14:57:03,868 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 14:57:03,874 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;@7607df8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 14:57:03,874 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 14:57:03,882 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 132 states have (on average 1.6136363636363635) internal successors, (213), 135 states have internal predecessors, (213), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-20 14:57:03,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-20 14:57:03,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:03,891 INFO L195 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] [2023-12-20 14:57:03,892 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:03,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:03,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1631832828, now seen corresponding path program 1 times [2023-12-20 14:57:03,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:03,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268979009] [2023-12-20 14:57:03,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:03,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:04,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-20 14:57:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:04,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-20 14:57:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:04,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 14:57:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:04,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 14:57:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:04,378 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-20 14:57:04,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:04,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268979009] [2023-12-20 14:57:04,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268979009] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:57:04,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279245375] [2023-12-20 14:57:04,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:04,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:57:04,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:57:04,409 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) [2023-12-20 14:57:04,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 14:57:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:04,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 14:57:04,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:57:04,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 14:57:04,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:57:04,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279245375] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:57:04,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:57:04,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2023-12-20 14:57:04,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226582327] [2023-12-20 14:57:04,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:57:04,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 14:57:04,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:04,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 14:57:04,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:57:04,700 INFO L87 Difference]: Start difference. First operand has 155 states, 132 states have (on average 1.6136363636363635) internal successors, (213), 135 states have internal predecessors, (213), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-20 14:57:05,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:05,115 INFO L93 Difference]: Finished difference Result 308 states and 482 transitions. [2023-12-20 14:57:05,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 14:57:05,117 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2023-12-20 14:57:05,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:05,124 INFO L225 Difference]: With dead ends: 308 [2023-12-20 14:57:05,124 INFO L226 Difference]: Without dead ends: 147 [2023-12-20 14:57:05,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:57:05,129 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:05,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 192 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:57:05,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-20 14:57:05,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2023-12-20 14:57:05,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 125 states have (on average 1.328) internal successors, (166), 127 states have internal predecessors, (166), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-20 14:57:05,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 194 transitions. [2023-12-20 14:57:05,173 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 194 transitions. Word has length 40 [2023-12-20 14:57:05,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:05,174 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 194 transitions. [2023-12-20 14:57:05,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-20 14:57:05,174 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 194 transitions. [2023-12-20 14:57:05,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-20 14:57:05,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:05,176 INFO L195 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] [2023-12-20 14:57:05,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 14:57:05,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-20 14:57:05,382 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:05,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:05,383 INFO L85 PathProgramCache]: Analyzing trace with hash -707999250, now seen corresponding path program 1 times [2023-12-20 14:57:05,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:05,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212141732] [2023-12-20 14:57:05,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:05,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:05,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-20 14:57:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:05,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-20 14:57:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:05,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 14:57:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:05,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 14:57:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:05,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-20 14:57:05,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:05,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212141732] [2023-12-20 14:57:05,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212141732] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:57:05,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993936742] [2023-12-20 14:57:05,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:05,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:57:05,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:57:05,511 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) [2023-12-20 14:57:05,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 14:57:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:05,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:57:05,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:57:05,744 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 14:57:05,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:57:05,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993936742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:57:05,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:57:05,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 14:57:05,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238151962] [2023-12-20 14:57:05,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:57:05,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:57:05,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:05,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:57:05,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:05,746 INFO L87 Difference]: Start difference. First operand 147 states and 194 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-20 14:57:06,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:06,727 INFO L93 Difference]: Finished difference Result 293 states and 387 transitions. [2023-12-20 14:57:06,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:57:06,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2023-12-20 14:57:06,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:06,729 INFO L225 Difference]: With dead ends: 293 [2023-12-20 14:57:06,729 INFO L226 Difference]: Without dead ends: 148 [2023-12-20 14:57:06,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:06,730 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:06,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 357 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:57:06,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-20 14:57:06,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2023-12-20 14:57:06,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 126 states have (on average 1.3253968253968254) internal successors, (167), 128 states have internal predecessors, (167), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-20 14:57:06,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 195 transitions. [2023-12-20 14:57:06,741 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 195 transitions. Word has length 41 [2023-12-20 14:57:06,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:06,741 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 195 transitions. [2023-12-20 14:57:06,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-20 14:57:06,741 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 195 transitions. [2023-12-20 14:57:06,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-20 14:57:06,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:06,743 INFO L195 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] [2023-12-20 14:57:06,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 14:57:06,949 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,SelfDestructingSolverStorable1 [2023-12-20 14:57:06,949 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:06,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:06,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1485248369, now seen corresponding path program 1 times [2023-12-20 14:57:06,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:06,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168004534] [2023-12-20 14:57:06,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:06,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:07,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-20 14:57:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:07,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:57:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:07,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:57:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:07,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-20 14:57:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:07,089 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 14:57:07,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:07,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168004534] [2023-12-20 14:57:07,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168004534] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:57:07,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864183069] [2023-12-20 14:57:07,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:07,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:57:07,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:57:07,092 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) [2023-12-20 14:57:07,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 14:57:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:07,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:57:07,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:57:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-20 14:57:07,287 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:57:07,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864183069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:57:07,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:57:07,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 14:57:07,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496184671] [2023-12-20 14:57:07,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:57:07,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:57:07,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:07,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:57:07,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:07,319 INFO L87 Difference]: Start difference. First operand 148 states and 195 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-20 14:57:08,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:08,103 INFO L93 Difference]: Finished difference Result 292 states and 387 transitions. [2023-12-20 14:57:08,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:57:08,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2023-12-20 14:57:08,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:08,109 INFO L225 Difference]: With dead ends: 292 [2023-12-20 14:57:08,109 INFO L226 Difference]: Without dead ends: 149 [2023-12-20 14:57:08,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:08,110 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:08,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 356 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:57:08,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-12-20 14:57:08,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2023-12-20 14:57:08,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 127 states have (on average 1.3228346456692914) internal successors, (168), 129 states have internal predecessors, (168), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-20 14:57:08,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 196 transitions. [2023-12-20 14:57:08,149 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 196 transitions. Word has length 42 [2023-12-20 14:57:08,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:08,150 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 196 transitions. [2023-12-20 14:57:08,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-20 14:57:08,152 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 196 transitions. [2023-12-20 14:57:08,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-20 14:57:08,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:08,156 INFO L195 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] [2023-12-20 14:57:08,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 14:57:08,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:57:08,356 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:08,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:08,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1550976507, now seen corresponding path program 1 times [2023-12-20 14:57:08,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:08,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890558760] [2023-12-20 14:57:08,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:08,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:08,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-20 14:57:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:08,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:57:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:08,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:57:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:08,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 14:57:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:08,650 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 14:57:08,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:08,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890558760] [2023-12-20 14:57:08,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890558760] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:57:08,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722087488] [2023-12-20 14:57:08,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:08,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:57:08,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:57:08,659 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) [2023-12-20 14:57:08,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 14:57:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:08,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:57:08,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:57:08,939 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 14:57:08,939 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:57:08,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722087488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:57:08,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:57:08,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 14:57:08,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126013447] [2023-12-20 14:57:08,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:57:08,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:57:08,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:08,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:57:08,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:08,943 INFO L87 Difference]: Start difference. First operand 149 states and 196 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-20 14:57:09,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:09,997 INFO L93 Difference]: Finished difference Result 284 states and 374 transitions. [2023-12-20 14:57:09,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:57:09,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 44 [2023-12-20 14:57:09,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:09,999 INFO L225 Difference]: With dead ends: 284 [2023-12-20 14:57:09,999 INFO L226 Difference]: Without dead ends: 156 [2023-12-20 14:57:09,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:10,005 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 6 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:10,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 345 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:57:10,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-12-20 14:57:10,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 150. [2023-12-20 14:57:10,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 128 states have (on average 1.3203125) internal successors, (169), 130 states have internal predecessors, (169), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-20 14:57:10,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 197 transitions. [2023-12-20 14:57:10,036 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 197 transitions. Word has length 44 [2023-12-20 14:57:10,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:10,037 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 197 transitions. [2023-12-20 14:57:10,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-20 14:57:10,038 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 197 transitions. [2023-12-20 14:57:10,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-20 14:57:10,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:10,041 INFO L195 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] [2023-12-20 14:57:10,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 14:57:10,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:57:10,260 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:10,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:10,260 INFO L85 PathProgramCache]: Analyzing trace with hash 594470631, now seen corresponding path program 1 times [2023-12-20 14:57:10,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:10,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483877385] [2023-12-20 14:57:10,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:10,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:10,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-20 14:57:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:10,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:57:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:10,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:57:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:10,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-20 14:57:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:10,519 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 14:57:10,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:10,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483877385] [2023-12-20 14:57:10,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483877385] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:57:10,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099535490] [2023-12-20 14:57:10,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:10,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:57:10,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:57:10,537 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) [2023-12-20 14:57:10,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 14:57:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:10,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:57:10,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:57:10,876 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 14:57:10,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:57:10,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099535490] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:57:10,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:57:10,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 14:57:10,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365943283] [2023-12-20 14:57:10,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:57:10,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:57:10,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:10,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:57:10,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:10,878 INFO L87 Difference]: Start difference. First operand 150 states and 197 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-20 14:57:11,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:11,853 INFO L93 Difference]: Finished difference Result 275 states and 363 transitions. [2023-12-20 14:57:11,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:57:11,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2023-12-20 14:57:11,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:11,855 INFO L225 Difference]: With dead ends: 275 [2023-12-20 14:57:11,855 INFO L226 Difference]: Without dead ends: 157 [2023-12-20 14:57:11,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:11,856 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 6 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:11,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 345 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:57:11,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-20 14:57:11,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2023-12-20 14:57:11,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 129 states have (on average 1.317829457364341) internal successors, (170), 131 states have internal predecessors, (170), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-20 14:57:11,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 198 transitions. [2023-12-20 14:57:11,862 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 198 transitions. Word has length 47 [2023-12-20 14:57:11,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:11,862 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 198 transitions. [2023-12-20 14:57:11,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-20 14:57:11,863 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 198 transitions. [2023-12-20 14:57:11,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 14:57:11,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:11,863 INFO L195 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] [2023-12-20 14:57:11,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-20 14:57:12,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:57:12,078 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:12,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:12,078 INFO L85 PathProgramCache]: Analyzing trace with hash -976296171, now seen corresponding path program 1 times [2023-12-20 14:57:12,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:12,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331408140] [2023-12-20 14:57:12,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:12,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:12,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-20 14:57:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:12,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:57:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:12,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:57:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:12,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-20 14:57:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:12,316 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-20 14:57:12,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:12,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331408140] [2023-12-20 14:57:12,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331408140] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:57:12,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658199585] [2023-12-20 14:57:12,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:12,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:57:12,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:57:12,336 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) [2023-12-20 14:57:12,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 14:57:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:12,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:57:12,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:57:12,589 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 14:57:12,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:57:12,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658199585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:57:12,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:57:12,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 14:57:12,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152298717] [2023-12-20 14:57:12,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:57:12,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:57:12,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:12,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:57:12,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:12,591 INFO L87 Difference]: Start difference. First operand 151 states and 198 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-20 14:57:13,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:13,654 INFO L93 Difference]: Finished difference Result 187 states and 253 transitions. [2023-12-20 14:57:13,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:57:13,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2023-12-20 14:57:13,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:13,655 INFO L225 Difference]: With dead ends: 187 [2023-12-20 14:57:13,655 INFO L226 Difference]: Without dead ends: 181 [2023-12-20 14:57:13,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:13,656 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 47 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:13,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 309 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 14:57:13,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-20 14:57:13,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 152. [2023-12-20 14:57:13,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 130 states have (on average 1.3153846153846154) internal successors, (171), 132 states have internal predecessors, (171), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-20 14:57:13,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 199 transitions. [2023-12-20 14:57:13,666 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 199 transitions. Word has length 50 [2023-12-20 14:57:13,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:13,667 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 199 transitions. [2023-12-20 14:57:13,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-20 14:57:13,667 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 199 transitions. [2023-12-20 14:57:13,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 14:57:13,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:13,668 INFO L195 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] [2023-12-20 14:57:13,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 14:57:13,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:57:13,869 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:13,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:13,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1674374375, now seen corresponding path program 1 times [2023-12-20 14:57:13,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:13,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692985009] [2023-12-20 14:57:13,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:13,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:14,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-20 14:57:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:14,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:57:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:14,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:57:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:14,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-20 14:57:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:14,184 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 14:57:14,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:14,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692985009] [2023-12-20 14:57:14,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692985009] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:57:14,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665296449] [2023-12-20 14:57:14,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:14,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:57:14,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:57:14,198 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) [2023-12-20 14:57:14,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 14:57:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:14,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:57:14,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:57:14,464 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 14:57:14,464 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:57:14,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665296449] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:57:14,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:57:14,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 14:57:14,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135696160] [2023-12-20 14:57:14,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:57:14,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:57:14,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:14,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:57:14,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:14,466 INFO L87 Difference]: Start difference. First operand 152 states and 199 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-20 14:57:15,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:15,221 INFO L93 Difference]: Finished difference Result 189 states and 256 transitions. [2023-12-20 14:57:15,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:57:15,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2023-12-20 14:57:15,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:15,223 INFO L225 Difference]: With dead ends: 189 [2023-12-20 14:57:15,223 INFO L226 Difference]: Without dead ends: 153 [2023-12-20 14:57:15,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:15,223 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:15,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 14:57:15,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-12-20 14:57:15,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2023-12-20 14:57:15,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 131 states have (on average 1.3129770992366412) internal successors, (172), 133 states have internal predecessors, (172), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-20 14:57:15,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 200 transitions. [2023-12-20 14:57:15,229 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 200 transitions. Word has length 60 [2023-12-20 14:57:15,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:15,229 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 200 transitions. [2023-12-20 14:57:15,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-20 14:57:15,229 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 200 transitions. [2023-12-20 14:57:15,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 14:57:15,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:15,230 INFO L195 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] [2023-12-20 14:57:15,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 14:57:15,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:57:15,436 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:15,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:15,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1940534551, now seen corresponding path program 1 times [2023-12-20 14:57:15,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:15,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450090778] [2023-12-20 14:57:15,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:15,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:15,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-20 14:57:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:15,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:57:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:15,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:57:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:15,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-20 14:57:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:15,612 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 14:57:15,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:15,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450090778] [2023-12-20 14:57:15,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450090778] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:57:15,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963553558] [2023-12-20 14:57:15,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:15,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:57:15,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:57:15,614 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) [2023-12-20 14:57:15,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 14:57:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:15,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 14:57:15,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:57:15,899 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-20 14:57:15,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:57:15,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963553558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:57:15,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:57:15,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 14:57:15,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50979820] [2023-12-20 14:57:15,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:57:15,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:57:15,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:15,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:57:15,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:15,901 INFO L87 Difference]: Start difference. First operand 153 states and 200 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-20 14:57:16,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:16,764 INFO L93 Difference]: Finished difference Result 190 states and 256 transitions. [2023-12-20 14:57:16,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:57:16,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2023-12-20 14:57:16,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:16,801 INFO L225 Difference]: With dead ends: 190 [2023-12-20 14:57:16,801 INFO L226 Difference]: Without dead ends: 184 [2023-12-20 14:57:16,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:16,822 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 37 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:16,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 352 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 14:57:16,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-20 14:57:16,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2023-12-20 14:57:16,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 161 states have (on average 1.3664596273291925) internal successors, (220), 163 states have internal predecessors, (220), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-20 14:57:16,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 248 transitions. [2023-12-20 14:57:16,863 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 248 transitions. Word has length 60 [2023-12-20 14:57:16,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:16,863 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 248 transitions. [2023-12-20 14:57:16,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-20 14:57:16,881 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 248 transitions. [2023-12-20 14:57:16,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 14:57:16,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:16,891 INFO L195 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] [2023-12-20 14:57:16,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 14:57:17,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-20 14:57:17,116 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:17,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:17,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1413461973, now seen corresponding path program 1 times [2023-12-20 14:57:17,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:17,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558431009] [2023-12-20 14:57:17,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:17,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:17,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-20 14:57:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:17,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:57:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:17,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:57:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:17,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-20 14:57:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:17,265 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 14:57:17,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:17,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558431009] [2023-12-20 14:57:17,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558431009] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:57:17,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290344484] [2023-12-20 14:57:17,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:17,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:57:17,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:57:17,266 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) [2023-12-20 14:57:17,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 14:57:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:17,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 14:57:17,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:57:17,591 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-20 14:57:17,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:57:17,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290344484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:57:17,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:57:17,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 14:57:17,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219618446] [2023-12-20 14:57:17,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:57:17,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:57:17,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:17,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:57:17,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:17,593 INFO L87 Difference]: Start difference. First operand 183 states and 248 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-20 14:57:18,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:18,466 INFO L93 Difference]: Finished difference Result 251 states and 353 transitions. [2023-12-20 14:57:18,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:57:18,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 74 [2023-12-20 14:57:18,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:18,481 INFO L225 Difference]: With dead ends: 251 [2023-12-20 14:57:18,481 INFO L226 Difference]: Without dead ends: 245 [2023-12-20 14:57:18,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:18,482 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 23 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:18,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 352 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 14:57:18,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-12-20 14:57:18,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2023-12-20 14:57:18,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 223 states have (on average 1.4260089686098654) internal successors, (318), 225 states have internal predecessors, (318), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-20 14:57:18,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 346 transitions. [2023-12-20 14:57:18,489 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 346 transitions. Word has length 74 [2023-12-20 14:57:18,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:18,491 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 346 transitions. [2023-12-20 14:57:18,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-20 14:57:18,492 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 346 transitions. [2023-12-20 14:57:18,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 14:57:18,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:18,493 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:57:18,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 14:57:18,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:57:18,699 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:18,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:18,699 INFO L85 PathProgramCache]: Analyzing trace with hash 58504681, now seen corresponding path program 1 times [2023-12-20 14:57:18,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:18,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699122817] [2023-12-20 14:57:18,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:18,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:18,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-20 14:57:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:18,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:57:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:18,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:57:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:18,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-20 14:57:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:18,952 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-20 14:57:18,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:18,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699122817] [2023-12-20 14:57:18,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699122817] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:57:18,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309966024] [2023-12-20 14:57:18,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:18,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:57:18,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:57:18,969 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:57:19,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 14:57:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:19,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 14:57:19,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:57:19,458 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-20 14:57:19,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:57:19,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309966024] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:57:19,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:57:19,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 14:57:19,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463867410] [2023-12-20 14:57:19,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:57:19,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:57:19,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:19,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:57:19,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:19,460 INFO L87 Difference]: Start difference. First operand 245 states and 346 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-20 14:57:20,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:20,281 INFO L93 Difference]: Finished difference Result 375 states and 549 transitions. [2023-12-20 14:57:20,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:57:20,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 90 [2023-12-20 14:57:20,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:20,283 INFO L225 Difference]: With dead ends: 375 [2023-12-20 14:57:20,283 INFO L226 Difference]: Without dead ends: 369 [2023-12-20 14:57:20,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:20,284 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 22 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:20,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 353 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:57:20,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-12-20 14:57:20,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2023-12-20 14:57:20,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 347 states have (on average 1.4812680115273775) internal successors, (514), 349 states have internal predecessors, (514), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-20 14:57:20,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 542 transitions. [2023-12-20 14:57:20,292 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 542 transitions. Word has length 90 [2023-12-20 14:57:20,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:20,292 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 542 transitions. [2023-12-20 14:57:20,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-20 14:57:20,293 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 542 transitions. [2023-12-20 14:57:20,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:57:20,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:20,294 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:57:20,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-20 14:57:20,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-20 14:57:20,500 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:20,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:20,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1840084245, now seen corresponding path program 1 times [2023-12-20 14:57:20,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:20,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587460557] [2023-12-20 14:57:20,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:20,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:20,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-20 14:57:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:20,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:57:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:20,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:57:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:20,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-20 14:57:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-20 14:57:20,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:20,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587460557] [2023-12-20 14:57:20,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587460557] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:57:20,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057064322] [2023-12-20 14:57:20,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:20,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:57:20,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:57:20,664 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:57:20,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 14:57:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:20,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 14:57:20,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:57:21,039 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-20 14:57:21,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:57:21,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057064322] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:57:21,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:57:21,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 14:57:21,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876828962] [2023-12-20 14:57:21,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:57:21,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:57:21,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:21,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:57:21,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:21,041 INFO L87 Difference]: Start difference. First operand 369 states and 542 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-20 14:57:21,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:21,879 INFO L93 Difference]: Finished difference Result 623 states and 941 transitions. [2023-12-20 14:57:21,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:57:21,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 100 [2023-12-20 14:57:21,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:21,882 INFO L225 Difference]: With dead ends: 623 [2023-12-20 14:57:21,882 INFO L226 Difference]: Without dead ends: 617 [2023-12-20 14:57:21,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:21,883 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 20 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:21,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 351 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:57:21,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-12-20 14:57:21,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2023-12-20 14:57:21,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 595 states have (on average 1.522689075630252) internal successors, (906), 597 states have internal predecessors, (906), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-20 14:57:21,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 934 transitions. [2023-12-20 14:57:21,896 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 934 transitions. Word has length 100 [2023-12-20 14:57:21,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:21,896 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 934 transitions. [2023-12-20 14:57:21,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-20 14:57:21,896 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 934 transitions. [2023-12-20 14:57:21,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-20 14:57:21,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:21,897 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:57:21,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 14:57:22,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-20 14:57:22,104 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:22,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:22,105 INFO L85 PathProgramCache]: Analyzing trace with hash 394013531, now seen corresponding path program 1 times [2023-12-20 14:57:22,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:22,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643847144] [2023-12-20 14:57:22,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:22,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:22,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-20 14:57:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:22,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:57:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:22,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:57:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:22,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-20 14:57:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:22,241 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-12-20 14:57:22,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:22,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643847144] [2023-12-20 14:57:22,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643847144] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:57:22,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099066711] [2023-12-20 14:57:22,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:22,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:57:22,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:57:22,258 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:57:22,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 14:57:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:22,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 14:57:22,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:57:22,602 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-12-20 14:57:22,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:57:22,649 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-12-20 14:57:22,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099066711] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:57:22,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:57:22,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 4] total 9 [2023-12-20 14:57:22,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169380760] [2023-12-20 14:57:22,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:57:22,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:57:22,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:22,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:57:22,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:57:22,651 INFO L87 Difference]: Start difference. First operand 617 states and 934 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 1 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-20 14:57:24,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:24,645 INFO L93 Difference]: Finished difference Result 1234 states and 1870 transitions. [2023-12-20 14:57:24,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:57:24,645 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 1 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 130 [2023-12-20 14:57:24,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:24,647 INFO L225 Difference]: With dead ends: 1234 [2023-12-20 14:57:24,647 INFO L226 Difference]: Without dead ends: 620 [2023-12-20 14:57:24,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:57:24,649 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 47 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:24,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 695 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 14:57:24,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2023-12-20 14:57:24,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2023-12-20 14:57:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 598 states have (on average 1.520066889632107) internal successors, (909), 600 states have internal predecessors, (909), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-20 14:57:24,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 937 transitions. [2023-12-20 14:57:24,660 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 937 transitions. Word has length 130 [2023-12-20 14:57:24,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:24,660 INFO L495 AbstractCegarLoop]: Abstraction has 620 states and 937 transitions. [2023-12-20 14:57:24,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 1 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-20 14:57:24,660 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 937 transitions. [2023-12-20 14:57:24,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-20 14:57:24,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:24,662 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:57:24,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 14:57:24,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-20 14:57:24,869 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:24,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:24,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1076598680, now seen corresponding path program 2 times [2023-12-20 14:57:24,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:24,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418917351] [2023-12-20 14:57:24,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:24,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:25,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:57:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:25,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 14:57:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:25,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:57:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:25,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:57:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:25,095 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-12-20 14:57:25,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:25,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418917351] [2023-12-20 14:57:25,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418917351] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:57:25,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281657860] [2023-12-20 14:57:25,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 14:57:25,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:57:25,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:57:25,118 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:57:25,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 14:57:26,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 14:57:26,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 14:57:26,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 14:57:26,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:57:26,290 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-12-20 14:57:26,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:57:26,350 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-12-20 14:57:26,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281657860] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:57:26,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:57:26,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 15 [2023-12-20 14:57:26,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274684199] [2023-12-20 14:57:26,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:57:26,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-20 14:57:26,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:26,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-20 14:57:26,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:57:26,352 INFO L87 Difference]: Start difference. First operand 620 states and 937 transitions. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 13 states have internal predecessors, (93), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-20 14:57:30,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:30,864 INFO L93 Difference]: Finished difference Result 1240 states and 1881 transitions. [2023-12-20 14:57:30,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 14:57:30,864 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 13 states have internal predecessors, (93), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 133 [2023-12-20 14:57:30,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:30,866 INFO L225 Difference]: With dead ends: 1240 [2023-12-20 14:57:30,866 INFO L226 Difference]: Without dead ends: 626 [2023-12-20 14:57:30,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 264 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-20 14:57:30,867 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 48 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:30,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1431 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-20 14:57:30,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-12-20 14:57:30,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2023-12-20 14:57:30,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 604 states have (on average 1.5149006622516556) internal successors, (915), 606 states have internal predecessors, (915), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-20 14:57:30,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 943 transitions. [2023-12-20 14:57:30,880 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 943 transitions. Word has length 133 [2023-12-20 14:57:30,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:30,880 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 943 transitions. [2023-12-20 14:57:30,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 13 states have internal predecessors, (93), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-20 14:57:30,880 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 943 transitions. [2023-12-20 14:57:30,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-20 14:57:30,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:30,911 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:57:30,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 14:57:31,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-20 14:57:31,112 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:31,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:31,113 INFO L85 PathProgramCache]: Analyzing trace with hash 943145735, now seen corresponding path program 3 times [2023-12-20 14:57:31,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:31,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627762202] [2023-12-20 14:57:31,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:31,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:31,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:57:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:31,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:57:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:31,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:57:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:31,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 14:57:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:31,432 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-20 14:57:31,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:31,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627762202] [2023-12-20 14:57:31,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627762202] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:57:31,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066159672] [2023-12-20 14:57:31,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 14:57:31,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:57:31,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:57:31,434 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:57:31,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 14:57:32,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-20 14:57:32,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 14:57:32,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-20 14:57:32,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:57:32,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 64 [2023-12-20 14:57:32,990 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-20 14:57:32,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:57:32,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066159672] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:57:32,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:57:32,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-12-20 14:57:32,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143666726] [2023-12-20 14:57:32,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:57:32,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:57:32,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:32,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:57:32,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:57:32,992 INFO L87 Difference]: Start difference. First operand 626 states and 943 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-20 14:57:36,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:36,253 INFO L93 Difference]: Finished difference Result 1206 states and 1836 transitions. [2023-12-20 14:57:36,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:57:36,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 140 [2023-12-20 14:57:36,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:36,255 INFO L225 Difference]: With dead ends: 1206 [2023-12-20 14:57:36,255 INFO L226 Difference]: Without dead ends: 697 [2023-12-20 14:57:36,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:57:36,257 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 234 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:36,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 710 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-20 14:57:36,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2023-12-20 14:57:36,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 673. [2023-12-20 14:57:36,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 644 states have (on average 1.4953416149068324) internal successors, (963), 648 states have internal predecessors, (963), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-20 14:57:36,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1005 transitions. [2023-12-20 14:57:36,277 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1005 transitions. Word has length 140 [2023-12-20 14:57:36,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:36,277 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 1005 transitions. [2023-12-20 14:57:36,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-20 14:57:36,278 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1005 transitions. [2023-12-20 14:57:36,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-20 14:57:36,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:36,279 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:57:36,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 14:57:36,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:57:36,487 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:36,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:36,488 INFO L85 PathProgramCache]: Analyzing trace with hash 458421821, now seen corresponding path program 1 times [2023-12-20 14:57:36,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:36,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413141339] [2023-12-20 14:57:36,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:36,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:36,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:57:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:36,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:57:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:36,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:57:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:36,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 14:57:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:36,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-20 14:57:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-12-20 14:57:36,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:36,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413141339] [2023-12-20 14:57:36,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413141339] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:57:36,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043158650] [2023-12-20 14:57:36,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:36,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:57:36,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:57:36,781 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:57:36,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 14:57:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:37,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 14:57:37,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:57:37,233 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-20 14:57:37,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:57:37,261 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-12-20 14:57:37,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043158650] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:57:37,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:57:37,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2023-12-20 14:57:37,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131788333] [2023-12-20 14:57:37,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:57:37,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:57:37,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:37,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:57:37,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:57:37,262 INFO L87 Difference]: Start difference. First operand 673 states and 1005 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:57:39,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:39,145 INFO L93 Difference]: Finished difference Result 1336 states and 2002 transitions. [2023-12-20 14:57:39,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 14:57:39,146 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 160 [2023-12-20 14:57:39,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:39,148 INFO L225 Difference]: With dead ends: 1336 [2023-12-20 14:57:39,148 INFO L226 Difference]: Without dead ends: 694 [2023-12-20 14:57:39,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-20 14:57:39,150 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 87 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:39,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 639 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 14:57:39,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2023-12-20 14:57:39,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 694. [2023-12-20 14:57:39,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 662 states have (on average 1.486404833836858) internal successors, (984), 666 states have internal predecessors, (984), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-20 14:57:39,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1032 transitions. [2023-12-20 14:57:39,168 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1032 transitions. Word has length 160 [2023-12-20 14:57:39,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:39,168 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 1032 transitions. [2023-12-20 14:57:39,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:57:39,168 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1032 transitions. [2023-12-20 14:57:39,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-20 14:57:39,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:39,171 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:57:39,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-20 14:57:39,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-20 14:57:39,379 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:39,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:39,380 INFO L85 PathProgramCache]: Analyzing trace with hash -26992121, now seen corresponding path program 2 times [2023-12-20 14:57:39,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:39,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177023569] [2023-12-20 14:57:39,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:39,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:39,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:57:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:39,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:57:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:39,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:57:39,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:39,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-20 14:57:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:39,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-20 14:57:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:39,591 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-12-20 14:57:39,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:39,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177023569] [2023-12-20 14:57:39,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177023569] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:57:39,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123036376] [2023-12-20 14:57:39,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 14:57:39,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:57:39,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:57:39,593 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:57:39,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 14:57:40,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 14:57:40,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 14:57:40,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 14:57:40,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:57:40,812 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-20 14:57:40,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:57:40,888 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-12-20 14:57:40,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123036376] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:57:40,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:57:40,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-12-20 14:57:40,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614546844] [2023-12-20 14:57:40,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:57:40,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-20 14:57:40,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:40,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-20 14:57:40,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:57:40,891 INFO L87 Difference]: Start difference. First operand 694 states and 1032 transitions. Second operand has 16 states, 16 states have (on average 8.125) internal successors, (130), 13 states have internal predecessors, (130), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:57:44,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:44,225 INFO L93 Difference]: Finished difference Result 1384 states and 2067 transitions. [2023-12-20 14:57:44,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 14:57:44,226 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.125) internal successors, (130), 13 states have internal predecessors, (130), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 169 [2023-12-20 14:57:44,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:44,229 INFO L225 Difference]: With dead ends: 1384 [2023-12-20 14:57:44,229 INFO L226 Difference]: Without dead ends: 742 [2023-12-20 14:57:44,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 338 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-12-20 14:57:44,230 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 120 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:44,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 1169 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-20 14:57:44,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2023-12-20 14:57:44,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 736. [2023-12-20 14:57:44,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 698 states have (on average 1.4699140401146131) internal successors, (1026), 702 states have internal predecessors, (1026), 30 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-20 14:57:44,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1086 transitions. [2023-12-20 14:57:44,253 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1086 transitions. Word has length 169 [2023-12-20 14:57:44,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:44,253 INFO L495 AbstractCegarLoop]: Abstraction has 736 states and 1086 transitions. [2023-12-20 14:57:44,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.125) internal successors, (130), 13 states have internal predecessors, (130), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:57:44,253 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1086 transitions. [2023-12-20 14:57:44,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-20 14:57:44,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:44,256 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:57:44,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-20 14:57:44,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-20 14:57:44,465 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:44,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:44,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1512948617, now seen corresponding path program 3 times [2023-12-20 14:57:44,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:44,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025339018] [2023-12-20 14:57:44,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:44,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:44,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:57:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:44,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:57:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:44,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:57:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:44,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:57:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:44,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-20 14:57:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:44,977 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-12-20 14:57:44,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:44,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025339018] [2023-12-20 14:57:44,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025339018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:57:44,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:57:44,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-20 14:57:44,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462753141] [2023-12-20 14:57:44,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:57:44,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-20 14:57:44,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:44,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-20 14:57:44,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:57:44,980 INFO L87 Difference]: Start difference. First operand 736 states and 1086 transitions. Second operand has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 8 states have internal predecessors, (98), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:57:48,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:48,679 INFO L93 Difference]: Finished difference Result 2859 states and 4440 transitions. [2023-12-20 14:57:48,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 14:57:48,680 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 8 states have internal predecessors, (98), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 187 [2023-12-20 14:57:48,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:48,687 INFO L225 Difference]: With dead ends: 2859 [2023-12-20 14:57:48,688 INFO L226 Difference]: Without dead ends: 2357 [2023-12-20 14:57:48,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-12-20 14:57:48,690 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 378 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:48,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 1060 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-20 14:57:48,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2023-12-20 14:57:48,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 880. [2023-12-20 14:57:48,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 842 states have (on average 1.4655581947743468) internal successors, (1234), 846 states have internal predecessors, (1234), 30 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-20 14:57:48,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1294 transitions. [2023-12-20 14:57:48,725 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1294 transitions. Word has length 187 [2023-12-20 14:57:48,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:48,725 INFO L495 AbstractCegarLoop]: Abstraction has 880 states and 1294 transitions. [2023-12-20 14:57:48,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 8 states have internal predecessors, (98), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:57:48,725 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1294 transitions. [2023-12-20 14:57:48,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-20 14:57:48,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:48,727 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:57:48,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 14:57:48,728 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:48,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:48,728 INFO L85 PathProgramCache]: Analyzing trace with hash 650557565, now seen corresponding path program 1 times [2023-12-20 14:57:48,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:48,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831720030] [2023-12-20 14:57:48,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:48,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:49,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:57:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:49,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:57:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:49,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:57:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:49,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:57:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:49,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-20 14:57:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:49,127 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-20 14:57:49,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:49,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831720030] [2023-12-20 14:57:49,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831720030] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:57:49,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:57:49,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:57:49,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859281565] [2023-12-20 14:57:49,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:57:49,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:57:49,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:49,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:57:49,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:49,128 INFO L87 Difference]: Start difference. First operand 880 states and 1294 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:57:52,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:52,048 INFO L93 Difference]: Finished difference Result 1654 states and 2501 transitions. [2023-12-20 14:57:52,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:57:52,049 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 187 [2023-12-20 14:57:52,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:52,053 INFO L225 Difference]: With dead ends: 1654 [2023-12-20 14:57:52,053 INFO L226 Difference]: Without dead ends: 1008 [2023-12-20 14:57:52,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-20 14:57:52,055 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 66 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:52,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 782 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 14:57:52,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-12-20 14:57:52,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 912. [2023-12-20 14:57:52,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 874 states have (on average 1.448512585812357) internal successors, (1266), 878 states have internal predecessors, (1266), 30 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-20 14:57:52,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1326 transitions. [2023-12-20 14:57:52,093 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1326 transitions. Word has length 187 [2023-12-20 14:57:52,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:52,093 INFO L495 AbstractCegarLoop]: Abstraction has 912 states and 1326 transitions. [2023-12-20 14:57:52,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:57:52,094 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1326 transitions. [2023-12-20 14:57:52,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-20 14:57:52,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:52,110 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:57:52,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 14:57:52,110 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:52,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:52,110 INFO L85 PathProgramCache]: Analyzing trace with hash -594117117, now seen corresponding path program 1 times [2023-12-20 14:57:52,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:52,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893325402] [2023-12-20 14:57:52,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:52,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:52,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:57:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:52,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:57:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:52,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:57:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:52,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:57:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:52,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-20 14:57:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2023-12-20 14:57:52,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:52,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893325402] [2023-12-20 14:57:52,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893325402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:57:52,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:57:52,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:57:52,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857559579] [2023-12-20 14:57:52,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:57:52,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:57:52,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:52,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:57:52,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:52,582 INFO L87 Difference]: Start difference. First operand 912 states and 1326 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:57:55,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:55,325 INFO L93 Difference]: Finished difference Result 1654 states and 2469 transitions. [2023-12-20 14:57:55,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:57:55,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 187 [2023-12-20 14:57:55,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:55,337 INFO L225 Difference]: With dead ends: 1654 [2023-12-20 14:57:55,337 INFO L226 Difference]: Without dead ends: 976 [2023-12-20 14:57:55,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-20 14:57:55,339 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 57 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:55,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 782 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 14:57:55,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2023-12-20 14:57:55,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 960. [2023-12-20 14:57:55,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 922 states have (on average 1.4251626898047722) internal successors, (1314), 926 states have internal predecessors, (1314), 30 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-20 14:57:55,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1374 transitions. [2023-12-20 14:57:55,389 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1374 transitions. Word has length 187 [2023-12-20 14:57:55,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:55,389 INFO L495 AbstractCegarLoop]: Abstraction has 960 states and 1374 transitions. [2023-12-20 14:57:55,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:57:55,389 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1374 transitions. [2023-12-20 14:57:55,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-20 14:57:55,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:55,391 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:57:55,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 14:57:55,392 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:55,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:55,408 INFO L85 PathProgramCache]: Analyzing trace with hash 393034757, now seen corresponding path program 1 times [2023-12-20 14:57:55,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:55,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790359205] [2023-12-20 14:57:55,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:55,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:55,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:57:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:55,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:57:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:55,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:57:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:55,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:57:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:55,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-20 14:57:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:55,748 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-12-20 14:57:55,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:55,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790359205] [2023-12-20 14:57:55,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790359205] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:57:55,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:57:55,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:57:55,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379306968] [2023-12-20 14:57:55,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:57:55,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:57:55,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:55,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:57:55,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:55,750 INFO L87 Difference]: Start difference. First operand 960 states and 1374 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:57:57,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:57,796 INFO L93 Difference]: Finished difference Result 1782 states and 2597 transitions. [2023-12-20 14:57:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:57:57,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 187 [2023-12-20 14:57:57,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:57,799 INFO L225 Difference]: With dead ends: 1782 [2023-12-20 14:57:57,799 INFO L226 Difference]: Without dead ends: 1056 [2023-12-20 14:57:57,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-20 14:57:57,800 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 68 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:57,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 847 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 14:57:57,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2023-12-20 14:57:57,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 960. [2023-12-20 14:57:57,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 922 states have (on average 1.4078091106290673) internal successors, (1298), 926 states have internal predecessors, (1298), 30 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-20 14:57:57,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1358 transitions. [2023-12-20 14:57:57,819 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1358 transitions. Word has length 187 [2023-12-20 14:57:57,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:57,819 INFO L495 AbstractCegarLoop]: Abstraction has 960 states and 1358 transitions. [2023-12-20 14:57:57,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:57:57,820 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1358 transitions. [2023-12-20 14:57:57,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-20 14:57:57,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:57,822 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:57:57,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 14:57:57,822 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:57,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:57,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1295908985, now seen corresponding path program 1 times [2023-12-20 14:57:57,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:57,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582020878] [2023-12-20 14:57:57,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:57,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:57,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:57:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:57,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:57:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:57,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:57:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:58,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:57:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:58,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-20 14:57:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:58,037 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-20 14:57:58,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:58,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582020878] [2023-12-20 14:57:58,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582020878] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:57:58,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:57:58,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:57:58,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162876937] [2023-12-20 14:57:58,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:57:58,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:57:58,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:58,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:57:58,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:57:58,040 INFO L87 Difference]: Start difference. First operand 960 states and 1358 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:57:59,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:59,891 INFO L93 Difference]: Finished difference Result 1846 states and 2661 transitions. [2023-12-20 14:57:59,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:57:59,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 187 [2023-12-20 14:57:59,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:59,894 INFO L225 Difference]: With dead ends: 1846 [2023-12-20 14:57:59,894 INFO L226 Difference]: Without dead ends: 1120 [2023-12-20 14:57:59,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-20 14:57:59,896 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 62 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:59,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 822 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 14:57:59,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2023-12-20 14:57:59,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 992. [2023-12-20 14:57:59,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 954 states have (on average 1.3773584905660377) internal successors, (1314), 958 states have internal predecessors, (1314), 30 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-20 14:57:59,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1374 transitions. [2023-12-20 14:57:59,922 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1374 transitions. Word has length 187 [2023-12-20 14:57:59,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:59,923 INFO L495 AbstractCegarLoop]: Abstraction has 992 states and 1374 transitions. [2023-12-20 14:57:59,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:57:59,925 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1374 transitions. [2023-12-20 14:57:59,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-20 14:57:59,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:59,928 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:57:59,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 14:57:59,928 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:59,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:59,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1410710409, now seen corresponding path program 1 times [2023-12-20 14:57:59,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:59,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422060234] [2023-12-20 14:57:59,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:59,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:58:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:00,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:58:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:00,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:58:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:00,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:58:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:00,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:58:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:00,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-20 14:58:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:00,346 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-20 14:58:00,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:58:00,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422060234] [2023-12-20 14:58:00,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422060234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:58:00,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:58:00,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-20 14:58:00,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250197809] [2023-12-20 14:58:00,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:58:00,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-20 14:58:00,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:58:00,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-20 14:58:00,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:58:00,349 INFO L87 Difference]: Start difference. First operand 992 states and 1374 transitions. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 8 states have internal predecessors, (116), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:58:03,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:58:03,856 INFO L93 Difference]: Finished difference Result 3339 states and 4760 transitions. [2023-12-20 14:58:03,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 14:58:03,857 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 8 states have internal predecessors, (116), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 187 [2023-12-20 14:58:03,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:58:03,863 INFO L225 Difference]: With dead ends: 3339 [2023-12-20 14:58:03,863 INFO L226 Difference]: Without dead ends: 2581 [2023-12-20 14:58:03,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-12-20 14:58:03,866 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 296 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:58:03,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1089 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-20 14:58:03,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states. [2023-12-20 14:58:03,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 1216. [2023-12-20 14:58:03,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 1178 states have (on average 1.3735144312393888) internal successors, (1618), 1182 states have internal predecessors, (1618), 30 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-20 14:58:03,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1678 transitions. [2023-12-20 14:58:03,925 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1678 transitions. Word has length 187 [2023-12-20 14:58:03,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:58:03,925 INFO L495 AbstractCegarLoop]: Abstraction has 1216 states and 1678 transitions. [2023-12-20 14:58:03,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 8 states have internal predecessors, (116), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:58:03,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1678 transitions. [2023-12-20 14:58:03,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-20 14:58:03,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:58:03,940 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:58:03,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 14:58:03,941 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:58:03,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:58:03,941 INFO L85 PathProgramCache]: Analyzing trace with hash 993313803, now seen corresponding path program 1 times [2023-12-20 14:58:03,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:58:03,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117091716] [2023-12-20 14:58:03,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:58:03,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:58:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:04,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:58:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:04,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:58:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:04,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:58:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:04,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:58:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:04,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-20 14:58:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:04,336 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-20 14:58:04,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:58:04,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117091716] [2023-12-20 14:58:04,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117091716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:58:04,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:58:04,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:58:04,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491444392] [2023-12-20 14:58:04,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:58:04,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:58:04,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:58:04,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:58:04,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:58:04,339 INFO L87 Difference]: Start difference. First operand 1216 states and 1678 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 4 states have internal predecessors, (116), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:58:06,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:58:06,900 INFO L93 Difference]: Finished difference Result 2326 states and 3269 transitions. [2023-12-20 14:58:06,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:58:06,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 4 states have internal predecessors, (116), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 187 [2023-12-20 14:58:06,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:58:06,907 INFO L225 Difference]: With dead ends: 2326 [2023-12-20 14:58:06,907 INFO L226 Difference]: Without dead ends: 1344 [2023-12-20 14:58:06,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-20 14:58:06,921 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 66 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:58:06,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 782 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 14:58:06,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2023-12-20 14:58:07,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1248. [2023-12-20 14:58:07,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 1210 states have (on average 1.3636363636363635) internal successors, (1650), 1214 states have internal predecessors, (1650), 30 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-20 14:58:07,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1710 transitions. [2023-12-20 14:58:07,018 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1710 transitions. Word has length 187 [2023-12-20 14:58:07,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:58:07,018 INFO L495 AbstractCegarLoop]: Abstraction has 1248 states and 1710 transitions. [2023-12-20 14:58:07,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 4 states have internal predecessors, (116), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:58:07,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1710 transitions. [2023-12-20 14:58:07,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-20 14:58:07,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:58:07,037 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:58:07,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 14:58:07,037 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:58:07,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:58:07,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1340078835, now seen corresponding path program 1 times [2023-12-20 14:58:07,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:58:07,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676906050] [2023-12-20 14:58:07,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:58:07,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:58:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:07,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:58:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:07,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:58:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:07,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:58:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:07,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:58:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:07,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-20 14:58:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:07,471 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-20 14:58:07,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:58:07,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676906050] [2023-12-20 14:58:07,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676906050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:58:07,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:58:07,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:58:07,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688369912] [2023-12-20 14:58:07,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:58:07,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:58:07,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:58:07,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:58:07,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:58:07,473 INFO L87 Difference]: Start difference. First operand 1248 states and 1710 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 4 states have internal predecessors, (116), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:58:09,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:58:09,482 INFO L93 Difference]: Finished difference Result 2326 states and 3237 transitions. [2023-12-20 14:58:09,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:58:09,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 4 states have internal predecessors, (116), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 187 [2023-12-20 14:58:09,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:58:09,486 INFO L225 Difference]: With dead ends: 2326 [2023-12-20 14:58:09,486 INFO L226 Difference]: Without dead ends: 1312 [2023-12-20 14:58:09,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-20 14:58:09,487 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 57 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 14:58:09,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 781 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 14:58:09,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2023-12-20 14:58:09,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1296. [2023-12-20 14:58:09,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1258 states have (on average 1.3497615262321145) internal successors, (1698), 1262 states have internal predecessors, (1698), 30 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-20 14:58:09,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1758 transitions. [2023-12-20 14:58:09,507 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1758 transitions. Word has length 187 [2023-12-20 14:58:09,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:58:09,507 INFO L495 AbstractCegarLoop]: Abstraction has 1296 states and 1758 transitions. [2023-12-20 14:58:09,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 4 states have internal predecessors, (116), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:58:09,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1758 transitions. [2023-12-20 14:58:09,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-20 14:58:09,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:58:09,509 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:58:09,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 14:58:09,510 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:58:09,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:58:09,510 INFO L85 PathProgramCache]: Analyzing trace with hash -702012151, now seen corresponding path program 2 times [2023-12-20 14:58:09,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:58:09,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659024842] [2023-12-20 14:58:09,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:58:09,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:58:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:09,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:58:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:09,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:58:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:09,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:58:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:09,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:58:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:09,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-20 14:58:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:09,804 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-12-20 14:58:09,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:58:09,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659024842] [2023-12-20 14:58:09,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659024842] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:58:09,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:58:09,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:58:09,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686248271] [2023-12-20 14:58:09,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:58:09,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:58:09,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:58:09,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:58:09,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:58:09,805 INFO L87 Difference]: Start difference. First operand 1296 states and 1758 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 5 states have internal predecessors, (125), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:58:12,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:58:12,413 INFO L93 Difference]: Finished difference Result 2566 states and 3493 transitions. [2023-12-20 14:58:12,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 14:58:12,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 5 states have internal predecessors, (125), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 187 [2023-12-20 14:58:12,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:58:12,417 INFO L225 Difference]: With dead ends: 2566 [2023-12-20 14:58:12,417 INFO L226 Difference]: Without dead ends: 1504 [2023-12-20 14:58:12,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:58:12,418 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 92 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:58:12,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 996 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 14:58:12,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2023-12-20 14:58:12,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1296. [2023-12-20 14:58:12,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1258 states have (on average 1.3370429252782194) internal successors, (1682), 1262 states have internal predecessors, (1682), 30 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-20 14:58:12,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1742 transitions. [2023-12-20 14:58:12,439 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1742 transitions. Word has length 187 [2023-12-20 14:58:12,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:58:12,439 INFO L495 AbstractCegarLoop]: Abstraction has 1296 states and 1742 transitions. [2023-12-20 14:58:12,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 5 states have internal predecessors, (125), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:58:12,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1742 transitions. [2023-12-20 14:58:12,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-20 14:58:12,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:58:12,442 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:58:12,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 14:58:12,442 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:58:12,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:58:12,442 INFO L85 PathProgramCache]: Analyzing trace with hash -42480629, now seen corresponding path program 1 times [2023-12-20 14:58:12,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:58:12,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303801417] [2023-12-20 14:58:12,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:58:12,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:58:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:12,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:58:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:12,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:58:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:12,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:58:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:12,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:58:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:12,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-20 14:58:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:12,662 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-12-20 14:58:12,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:58:12,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303801417] [2023-12-20 14:58:12,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303801417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:58:12,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:58:12,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:58:12,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049955372] [2023-12-20 14:58:12,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:58:12,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:58:12,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:58:12,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:58:12,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:58:12,664 INFO L87 Difference]: Start difference. First operand 1296 states and 1742 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 4 states have internal predecessors, (116), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:58:14,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:58:14,619 INFO L93 Difference]: Finished difference Result 2550 states and 3493 transitions. [2023-12-20 14:58:14,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:58:14,620 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 4 states have internal predecessors, (116), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 187 [2023-12-20 14:58:14,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:58:14,623 INFO L225 Difference]: With dead ends: 2550 [2023-12-20 14:58:14,623 INFO L226 Difference]: Without dead ends: 1488 [2023-12-20 14:58:14,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-20 14:58:14,625 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 68 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 14:58:14,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 847 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 14:58:14,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2023-12-20 14:58:14,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1328. [2023-12-20 14:58:14,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1290 states have (on average 1.3162790697674418) internal successors, (1698), 1294 states have internal predecessors, (1698), 30 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-20 14:58:14,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1758 transitions. [2023-12-20 14:58:14,649 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1758 transitions. Word has length 187 [2023-12-20 14:58:14,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:58:14,649 INFO L495 AbstractCegarLoop]: Abstraction has 1328 states and 1758 transitions. [2023-12-20 14:58:14,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 4 states have internal predecessors, (116), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:58:14,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1758 transitions. [2023-12-20 14:58:14,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-20 14:58:14,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:58:14,652 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:58:14,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 14:58:14,652 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:58:14,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:58:14,653 INFO L85 PathProgramCache]: Analyzing trace with hash -886486131, now seen corresponding path program 1 times [2023-12-20 14:58:14,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:58:14,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325223664] [2023-12-20 14:58:14,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:58:14,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:58:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:14,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:58:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:14,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:58:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:14,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:58:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:14,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:58:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:14,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-20 14:58:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:14,893 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-12-20 14:58:14,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:58:14,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325223664] [2023-12-20 14:58:14,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325223664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:58:14,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:58:14,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:58:14,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143949897] [2023-12-20 14:58:14,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:58:14,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:58:14,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:58:14,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:58:14,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:58:14,895 INFO L87 Difference]: Start difference. First operand 1328 states and 1758 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 4 states have internal predecessors, (115), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:58:16,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:58:16,793 INFO L93 Difference]: Finished difference Result 2550 states and 3429 transitions. [2023-12-20 14:58:16,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:58:16,794 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 4 states have internal predecessors, (115), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 187 [2023-12-20 14:58:16,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:58:16,797 INFO L225 Difference]: With dead ends: 2550 [2023-12-20 14:58:16,797 INFO L226 Difference]: Without dead ends: 1456 [2023-12-20 14:58:16,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-20 14:58:16,799 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 62 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:58:16,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 822 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 14:58:16,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2023-12-20 14:58:16,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1360. [2023-12-20 14:58:16,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1322 states have (on average 1.2965204236006052) internal successors, (1714), 1326 states have internal predecessors, (1714), 30 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-20 14:58:16,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1774 transitions. [2023-12-20 14:58:16,822 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1774 transitions. Word has length 187 [2023-12-20 14:58:16,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:58:16,822 INFO L495 AbstractCegarLoop]: Abstraction has 1360 states and 1774 transitions. [2023-12-20 14:58:16,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 4 states have internal predecessors, (115), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:58:16,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1774 transitions. [2023-12-20 14:58:16,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-20 14:58:16,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:58:16,824 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:58:16,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 14:58:16,825 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:58:16,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:58:16,825 INFO L85 PathProgramCache]: Analyzing trace with hash -958872689, now seen corresponding path program 1 times [2023-12-20 14:58:16,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:58:16,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628486920] [2023-12-20 14:58:16,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:58:16,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:58:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:17,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:58:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:17,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:58:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:17,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:58:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:17,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:58:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:17,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-20 14:58:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:17,150 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-12-20 14:58:17,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:58:17,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628486920] [2023-12-20 14:58:17,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628486920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:58:17,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:58:17,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:58:17,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744170696] [2023-12-20 14:58:17,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:58:17,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:58:17,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:58:17,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:58:17,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:58:17,151 INFO L87 Difference]: Start difference. First operand 1360 states and 1774 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:58:19,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:58:19,209 INFO L93 Difference]: Finished difference Result 2550 states and 3365 transitions. [2023-12-20 14:58:19,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:58:19,218 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 187 [2023-12-20 14:58:19,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:58:19,221 INFO L225 Difference]: With dead ends: 2550 [2023-12-20 14:58:19,221 INFO L226 Difference]: Without dead ends: 1424 [2023-12-20 14:58:19,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-20 14:58:19,223 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 56 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:58:19,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 793 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 14:58:19,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2023-12-20 14:58:19,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1408. [2023-12-20 14:58:19,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1370 states have (on average 1.2627737226277371) internal successors, (1730), 1374 states have internal predecessors, (1730), 30 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-20 14:58:19,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 1790 transitions. [2023-12-20 14:58:19,269 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 1790 transitions. Word has length 187 [2023-12-20 14:58:19,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:58:19,269 INFO L495 AbstractCegarLoop]: Abstraction has 1408 states and 1790 transitions. [2023-12-20 14:58:19,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 14:58:19,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 1790 transitions. [2023-12-20 14:58:19,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-20 14:58:19,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:58:19,272 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:58:19,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 14:58:19,272 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:58:19,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:58:19,273 INFO L85 PathProgramCache]: Analyzing trace with hash -257272815, now seen corresponding path program 1 times [2023-12-20 14:58:19,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:58:19,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324810075] [2023-12-20 14:58:19,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:58:19,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:58:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:19,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:58:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:19,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:58:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:19,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:58:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:19,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:58:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:19,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-20 14:58:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:19,746 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-12-20 14:58:19,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:58:19,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324810075] [2023-12-20 14:58:19,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324810075] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:58:19,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589614888] [2023-12-20 14:58:19,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:58:19,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:58:19,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:58:19,748 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:58:19,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 14:58:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:20,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 14:58:20,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:58:20,438 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-20 14:58:20,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:58:20,473 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-12-20 14:58:20,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589614888] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:58:20,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:58:20,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2023-12-20 14:58:20,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884183337] [2023-12-20 14:58:20,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:58:20,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-20 14:58:20,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:58:20,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-20 14:58:20,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-12-20 14:58:20,475 INFO L87 Difference]: Start difference. First operand 1408 states and 1790 transitions. Second operand has 12 states, 12 states have (on average 10.166666666666666) internal successors, (122), 9 states have internal predecessors, (122), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:58:23,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:58:23,068 INFO L93 Difference]: Finished difference Result 2739 states and 3488 transitions. [2023-12-20 14:58:23,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 14:58:23,068 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.166666666666666) internal successors, (122), 9 states have internal predecessors, (122), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 187 [2023-12-20 14:58:23,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:58:23,072 INFO L225 Difference]: With dead ends: 2739 [2023-12-20 14:58:23,072 INFO L226 Difference]: Without dead ends: 1436 [2023-12-20 14:58:23,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:58:23,073 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 91 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:58:23,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 969 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 14:58:23,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2023-12-20 14:58:23,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1436. [2023-12-20 14:58:23,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1394 states have (on average 1.2611190817790532) internal successors, (1758), 1398 states have internal predecessors, (1758), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-20 14:58:23,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 1826 transitions. [2023-12-20 14:58:23,095 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 1826 transitions. Word has length 187 [2023-12-20 14:58:23,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:58:23,096 INFO L495 AbstractCegarLoop]: Abstraction has 1436 states and 1826 transitions. [2023-12-20 14:58:23,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.166666666666666) internal successors, (122), 9 states have internal predecessors, (122), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:58:23,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 1826 transitions. [2023-12-20 14:58:23,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-20 14:58:23,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:58:23,099 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:58:23,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-20 14:58:23,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 14:58:23,309 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:58:23,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:58:23,309 INFO L85 PathProgramCache]: Analyzing trace with hash -951060335, now seen corresponding path program 2 times [2023-12-20 14:58:23,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:58:23,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401552348] [2023-12-20 14:58:23,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:58:23,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:58:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:23,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:58:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:23,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:58:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:23,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:58:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:23,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-20 14:58:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:23,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-20 14:58:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:23,653 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-12-20 14:58:23,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:58:23,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401552348] [2023-12-20 14:58:23,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401552348] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:58:23,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485158935] [2023-12-20 14:58:23,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 14:58:23,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:58:23,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:58:23,654 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:58:23,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-20 14:58:25,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 14:58:25,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 14:58:25,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 14:58:25,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:58:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-20 14:58:25,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:58:25,166 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-12-20 14:58:25,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485158935] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:58:25,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:58:25,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 15 [2023-12-20 14:58:25,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734805898] [2023-12-20 14:58:25,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:58:25,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-20 14:58:25,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:58:25,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-20 14:58:25,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:58:25,168 INFO L87 Difference]: Start difference. First operand 1436 states and 1826 transitions. Second operand has 15 states, 15 states have (on average 8.933333333333334) internal successors, (134), 12 states have internal predecessors, (134), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:58:27,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:58:27,011 INFO L93 Difference]: Finished difference Result 2760 states and 3514 transitions. [2023-12-20 14:58:27,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 14:58:27,011 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.933333333333334) internal successors, (134), 12 states have internal predecessors, (134), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 199 [2023-12-20 14:58:27,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:58:27,014 INFO L225 Difference]: With dead ends: 2760 [2023-12-20 14:58:27,014 INFO L226 Difference]: Without dead ends: 1457 [2023-12-20 14:58:27,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 400 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-20 14:58:27,016 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 125 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:58:27,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 669 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 14:58:27,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2023-12-20 14:58:27,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1457. [2023-12-20 14:58:27,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1412 states have (on average 1.2599150141643058) internal successors, (1779), 1416 states have internal predecessors, (1779), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-20 14:58:27,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1853 transitions. [2023-12-20 14:58:27,038 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1853 transitions. Word has length 199 [2023-12-20 14:58:27,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:58:27,039 INFO L495 AbstractCegarLoop]: Abstraction has 1457 states and 1853 transitions. [2023-12-20 14:58:27,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.933333333333334) internal successors, (134), 12 states have internal predecessors, (134), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:58:27,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1853 transitions. [2023-12-20 14:58:27,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-20 14:58:27,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:58:27,042 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:58:27,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-20 14:58:27,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:58:27,255 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:58:27,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:58:27,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1697008681, now seen corresponding path program 3 times [2023-12-20 14:58:27,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:58:27,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994440196] [2023-12-20 14:58:27,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:58:27,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:58:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:27,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:58:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:27,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:58:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:27,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:58:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:27,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 14:58:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:27,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 14:58:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:27,529 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-12-20 14:58:27,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:58:27,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994440196] [2023-12-20 14:58:27,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994440196] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:58:27,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267728351] [2023-12-20 14:58:27,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 14:58:27,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:58:27,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:58:27,552 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:58:27,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-20 14:58:28,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-20 14:58:28,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 14:58:28,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-20 14:58:28,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:58:29,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 73 [2023-12-20 14:58:29,914 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 14:58:29,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 74 treesize of output 90 [2023-12-20 14:58:29,993 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2023-12-20 14:58:29,994 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:58:29,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267728351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:58:29,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:58:29,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-12-20 14:58:29,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058915210] [2023-12-20 14:58:29,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:58:29,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:58:29,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:58:29,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:58:29,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-12-20 14:58:29,996 INFO L87 Difference]: Start difference. First operand 1457 states and 1853 transitions. Second operand has 10 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-20 14:58:34,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:58:34,557 INFO L93 Difference]: Finished difference Result 2869 states and 3654 transitions. [2023-12-20 14:58:34,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 14:58:34,558 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 208 [2023-12-20 14:58:34,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:58:34,567 INFO L225 Difference]: With dead ends: 2869 [2023-12-20 14:58:34,567 INFO L226 Difference]: Without dead ends: 1688 [2023-12-20 14:58:34,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2023-12-20 14:58:34,569 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 235 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:58:34,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 924 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-20 14:58:34,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2023-12-20 14:58:34,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1606. [2023-12-20 14:58:34,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1532 states have (on average 1.262402088772846) internal successors, (1934), 1557 states have internal predecessors, (1934), 65 states have call successors, (65), 8 states have call predecessors, (65), 8 states have return successors, (65), 44 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-20 14:58:34,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2064 transitions. [2023-12-20 14:58:34,614 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2064 transitions. Word has length 208 [2023-12-20 14:58:34,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:58:34,614 INFO L495 AbstractCegarLoop]: Abstraction has 1606 states and 2064 transitions. [2023-12-20 14:58:34,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-20 14:58:34,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2064 transitions. [2023-12-20 14:58:34,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-20 14:58:34,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:58:34,618 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:58:34,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-20 14:58:34,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:58:34,828 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:58:34,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:58:34,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1380613329, now seen corresponding path program 1 times [2023-12-20 14:58:34,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:58:34,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598538874] [2023-12-20 14:58:34,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:58:34,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:58:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:35,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:58:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:35,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:58:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:35,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:58:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:35,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 14:58:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:35,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 14:58:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:35,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-20 14:58:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:35,249 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2023-12-20 14:58:35,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:58:35,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598538874] [2023-12-20 14:58:35,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598538874] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:58:35,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658685800] [2023-12-20 14:58:35,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:58:35,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:58:35,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:58:35,260 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:58:35,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-20 14:58:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:35,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 14:58:35,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:58:36,113 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2023-12-20 14:58:36,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:58:36,281 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2023-12-20 14:58:36,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658685800] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:58:36,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:58:36,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 16 [2023-12-20 14:58:36,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468505725] [2023-12-20 14:58:36,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:58:36,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-20 14:58:36,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:58:36,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-20 14:58:36,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:58:36,284 INFO L87 Difference]: Start difference. First operand 1606 states and 2064 transitions. Second operand has 16 states, 16 states have (on average 15.875) internal successors, (254), 12 states have internal predecessors, (254), 1 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-20 14:58:39,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:58:39,335 INFO L93 Difference]: Finished difference Result 8651 states and 11034 transitions. [2023-12-20 14:58:39,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 14:58:39,336 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.875) internal successors, (254), 12 states have internal predecessors, (254), 1 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 222 [2023-12-20 14:58:39,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:58:39,347 INFO L225 Difference]: With dead ends: 8651 [2023-12-20 14:58:39,348 INFO L226 Difference]: Without dead ends: 8645 [2023-12-20 14:58:39,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 449 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2023-12-20 14:58:39,365 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 482 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:58:39,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 927 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 14:58:39,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8645 states. [2023-12-20 14:58:39,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8645 to 6886. [2023-12-20 14:58:39,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6886 states, 6812 states have (on average 1.2778919553728714) internal successors, (8705), 6837 states have internal predecessors, (8705), 65 states have call successors, (65), 8 states have call predecessors, (65), 8 states have return successors, (65), 44 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-20 14:58:39,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6886 states to 6886 states and 8835 transitions. [2023-12-20 14:58:39,632 INFO L78 Accepts]: Start accepts. Automaton has 6886 states and 8835 transitions. Word has length 222 [2023-12-20 14:58:39,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:58:39,632 INFO L495 AbstractCegarLoop]: Abstraction has 6886 states and 8835 transitions. [2023-12-20 14:58:39,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.875) internal successors, (254), 12 states have internal predecessors, (254), 1 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-20 14:58:39,633 INFO L276 IsEmpty]: Start isEmpty. Operand 6886 states and 8835 transitions. [2023-12-20 14:58:39,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-20 14:58:39,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:58:39,656 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 6, 6, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:58:39,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-20 14:58:39,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-20 14:58:39,869 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:58:39,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:58:39,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1295501147, now seen corresponding path program 2 times [2023-12-20 14:58:39,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:58:39,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097901554] [2023-12-20 14:58:39,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:58:39,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:58:40,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:40,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:58:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:40,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:58:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:40,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:58:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:40,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 14:58:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:40,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 14:58:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:40,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-20 14:58:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:40,526 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 199 proven. 28 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2023-12-20 14:58:40,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:58:40,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097901554] [2023-12-20 14:58:40,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097901554] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:58:40,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548085304] [2023-12-20 14:58:40,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 14:58:40,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:58:40,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:58:40,549 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:58:40,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-20 14:58:42,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 14:58:42,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 14:58:42,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 1415 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 14:58:42,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:58:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 208 proven. 19 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2023-12-20 14:58:42,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:58:42,510 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 208 proven. 19 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2023-12-20 14:58:42,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548085304] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:58:42,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:58:42,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 12 [2023-12-20 14:58:42,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106113781] [2023-12-20 14:58:42,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:58:42,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-20 14:58:42,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:58:42,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-20 14:58:42,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-20 14:58:42,541 INFO L87 Difference]: Start difference. First operand 6886 states and 8835 transitions. Second operand has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 8 states have internal predecessors, (208), 1 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-20 14:58:45,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:58:45,868 INFO L93 Difference]: Finished difference Result 12639 states and 16200 transitions. [2023-12-20 14:58:45,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:58:45,869 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 8 states have internal predecessors, (208), 1 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 272 [2023-12-20 14:58:45,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:58:45,890 INFO L225 Difference]: With dead ends: 12639 [2023-12-20 14:58:45,890 INFO L226 Difference]: Without dead ends: 10018 [2023-12-20 14:58:45,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 551 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2023-12-20 14:58:45,911 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 364 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:58:45,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 1234 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 14:58:45,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10018 states. [2023-12-20 14:58:46,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10018 to 6796. [2023-12-20 14:58:46,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6796 states, 6722 states have (on average 1.2682237429336507) internal successors, (8525), 6747 states have internal predecessors, (8525), 65 states have call successors, (65), 8 states have call predecessors, (65), 8 states have return successors, (65), 44 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-20 14:58:46,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6796 states to 6796 states and 8655 transitions. [2023-12-20 14:58:46,197 INFO L78 Accepts]: Start accepts. Automaton has 6796 states and 8655 transitions. Word has length 272 [2023-12-20 14:58:46,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:58:46,197 INFO L495 AbstractCegarLoop]: Abstraction has 6796 states and 8655 transitions. [2023-12-20 14:58:46,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 8 states have internal predecessors, (208), 1 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-20 14:58:46,197 INFO L276 IsEmpty]: Start isEmpty. Operand 6796 states and 8655 transitions. [2023-12-20 14:58:46,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-12-20 14:58:46,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:58:46,223 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:58:46,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-20 14:58:46,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-20 14:58:46,434 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:58:46,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:58:46,435 INFO L85 PathProgramCache]: Analyzing trace with hash 651405267, now seen corresponding path program 3 times [2023-12-20 14:58:46,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:58:46,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766965441] [2023-12-20 14:58:46,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:58:46,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:58:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:46,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:58:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:46,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:58:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:46,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:58:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:46,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 14:58:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:46,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 14:58:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:46,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-20 14:58:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:46,937 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 392 proven. 16 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2023-12-20 14:58:46,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:58:46,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766965441] [2023-12-20 14:58:46,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766965441] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:58:46,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903127543] [2023-12-20 14:58:46,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 14:58:46,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:58:46,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:58:46,943 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:58:46,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-20 14:58:48,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-20 14:58:48,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 14:58:48,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-20 14:58:48,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:58:48,527 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 14:58:48,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 155 treesize of output 127 [2023-12-20 14:58:48,553 WARN L876 $PredicateComparison]: unable to prove that (exists ((tso_core_write_~tail~0 Int) (v_arrayElimCell_10 Int)) (let ((.cse0 (select |c_old(#memory_int#7)| |c_tso_core_write_#in~wrBuffer.base|)) (.cse1 (+ 16 |c_tso_core_write_#in~wrBuffer.offset|))) (and (<= tso_core_write_~tail~0 (mod (+ (select .cse0 (+ |c_tso_core_write_#in~wrBuffer.offset| 17)) (select .cse0 .cse1)) 2)) (= |c_#memory_int#7| (store |c_old(#memory_int#7)| |c_tso_core_write_#in~wrBuffer.base| (let ((.cse12 (* tso_core_write_~tail~0 8))) (let ((.cse10 (+ 7 .cse12 |c_tso_core_write_#in~wrBuffer.offset|)) (.cse8 (+ .cse12 6 |c_tso_core_write_#in~wrBuffer.offset|)) (.cse6 (+ 5 .cse12 |c_tso_core_write_#in~wrBuffer.offset|)) (.cse3 (select |c_#memory_int#7| |c_tso_core_write_#in~wrBuffer.base|)) (.cse4 (+ .cse12 |c_tso_core_write_#in~wrBuffer.offset| 4))) (let ((.cse2 (+ .cse12 |c_tso_core_write_#in~wrBuffer.offset|)) (.cse5 (select .cse3 .cse4)) (.cse7 (select .cse3 .cse6)) (.cse9 (select .cse3 .cse8)) (.cse11 (select .cse3 .cse10))) (store (store (store (store (store (store .cse0 .cse2 (select .cse3 .cse2)) .cse4 .cse5) .cse6 .cse7) .cse8 .cse9) .cse10 .cse11) .cse1 (+ (mod (select (store (store (store (store (store .cse0 .cse2 v_arrayElimCell_10) .cse4 .cse5) .cse6 .cse7) .cse8 .cse9) .cse10 .cse11) .cse1) 256) 1)))))))))) is different from true [2023-12-20 14:58:48,572 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 180 treesize of output 169 [2023-12-20 14:58:48,593 INFO L349 Elim1Store]: treesize reduction 54, result has 19.4 percent of original size [2023-12-20 14:58:48,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 197 treesize of output 279 [2023-12-20 14:58:49,082 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 309 treesize of output 279 [2023-12-20 14:58:49,089 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-20 14:58:49,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 88 treesize of output 46 [2023-12-20 14:58:49,129 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2023-12-20 14:58:49,129 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:58:49,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903127543] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:58:49,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:58:49,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 15 [2023-12-20 14:58:49,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166047864] [2023-12-20 14:58:49,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:58:49,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:58:49,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:58:49,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:58:49,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=153, Unknown=1, NotChecked=24, Total=210 [2023-12-20 14:58:49,133 INFO L87 Difference]: Start difference. First operand 6796 states and 8655 transitions. Second operand has 9 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-20 14:58:52,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:58:52,400 INFO L93 Difference]: Finished difference Result 19732 states and 25099 transitions. [2023-12-20 14:58:52,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 14:58:52,401 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 302 [2023-12-20 14:58:52,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:58:52,423 INFO L225 Difference]: With dead ends: 19732 [2023-12-20 14:58:52,424 INFO L226 Difference]: Without dead ends: 13361 [2023-12-20 14:58:52,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=228, Unknown=1, NotChecked=30, Total=306 [2023-12-20 14:58:52,434 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 172 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 434 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:58:52,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 1251 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 383 Invalid, 0 Unknown, 434 Unchecked, 3.0s Time] [2023-12-20 14:58:52,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13361 states. [2023-12-20 14:58:52,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13361 to 6962. [2023-12-20 14:58:52,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6962 states, 6866 states have (on average 1.2674046023885814) internal successors, (8702), 6895 states have internal predecessors, (8702), 87 states have call successors, (87), 8 states have call predecessors, (87), 8 states have return successors, (87), 64 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-20 14:58:52,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6962 states to 6962 states and 8876 transitions. [2023-12-20 14:58:52,581 INFO L78 Accepts]: Start accepts. Automaton has 6962 states and 8876 transitions. Word has length 302 [2023-12-20 14:58:52,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:58:52,583 INFO L495 AbstractCegarLoop]: Abstraction has 6962 states and 8876 transitions. [2023-12-20 14:58:52,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-20 14:58:52,584 INFO L276 IsEmpty]: Start isEmpty. Operand 6962 states and 8876 transitions. [2023-12-20 14:58:52,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-20 14:58:52,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:58:52,595 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:58:52,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-20 14:58:52,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:58:52,806 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:58:52,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:58:52,806 INFO L85 PathProgramCache]: Analyzing trace with hash -700741282, now seen corresponding path program 1 times [2023-12-20 14:58:52,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:58:52,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032164493] [2023-12-20 14:58:52,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:58:52,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:58:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:53,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:58:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:53,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:58:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:53,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:58:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:53,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 14:58:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:53,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 14:58:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:53,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-20 14:58:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 392 proven. 16 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2023-12-20 14:58:53,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:58:53,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032164493] [2023-12-20 14:58:53,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032164493] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:58:53,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162522676] [2023-12-20 14:58:53,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:58:53,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:58:53,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:58:53,175 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:58:53,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-20 14:58:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:54,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 1423 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 14:58:54,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:58:54,191 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 384 proven. 57 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2023-12-20 14:58:54,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:58:54,323 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 384 proven. 57 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2023-12-20 14:58:54,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162522676] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:58:54,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:58:54,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2023-12-20 14:58:54,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803368315] [2023-12-20 14:58:54,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:58:54,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-20 14:58:54,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:58:54,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-20 14:58:54,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:58:54,325 INFO L87 Difference]: Start difference. First operand 6962 states and 8876 transitions. Second operand has 17 states, 17 states have (on average 19.294117647058822) internal successors, (328), 13 states have internal predecessors, (328), 1 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-20 14:58:58,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:58:58,776 INFO L93 Difference]: Finished difference Result 11887 states and 15121 transitions. [2023-12-20 14:58:58,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 14:58:58,776 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 19.294117647058822) internal successors, (328), 13 states have internal predecessors, (328), 1 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 303 [2023-12-20 14:58:58,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:58:58,789 INFO L225 Difference]: With dead ends: 11887 [2023-12-20 14:58:58,789 INFO L226 Difference]: Without dead ends: 9298 [2023-12-20 14:58:58,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 615 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=243, Invalid=813, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 14:58:58,796 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 386 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1938 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:58:58,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 1938 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-20 14:58:58,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9298 states. [2023-12-20 14:58:58,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9298 to 6918. [2023-12-20 14:58:58,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6918 states, 6822 states have (on average 1.2626795661096453) internal successors, (8614), 6851 states have internal predecessors, (8614), 87 states have call successors, (87), 8 states have call predecessors, (87), 8 states have return successors, (87), 64 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-20 14:58:58,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6918 states to 6918 states and 8788 transitions. [2023-12-20 14:58:58,920 INFO L78 Accepts]: Start accepts. Automaton has 6918 states and 8788 transitions. Word has length 303 [2023-12-20 14:58:58,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:58:58,921 INFO L495 AbstractCegarLoop]: Abstraction has 6918 states and 8788 transitions. [2023-12-20 14:58:58,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 19.294117647058822) internal successors, (328), 13 states have internal predecessors, (328), 1 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-20 14:58:58,921 INFO L276 IsEmpty]: Start isEmpty. Operand 6918 states and 8788 transitions. [2023-12-20 14:58:58,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2023-12-20 14:58:58,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:58:58,932 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:58:58,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-20 14:58:59,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:58:59,143 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:58:59,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:58:59,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1932712890, now seen corresponding path program 2 times [2023-12-20 14:58:59,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:58:59,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095415276] [2023-12-20 14:58:59,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:58:59,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:58:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:59,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:58:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:59,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:58:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:59,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:58:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:59,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 14:58:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:59,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 14:58:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:59,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-20 14:58:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:58:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 288 proven. 23 refuted. 0 times theorem prover too weak. 701 trivial. 0 not checked. [2023-12-20 14:58:59,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:58:59,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095415276] [2023-12-20 14:58:59,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095415276] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:58:59,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305998371] [2023-12-20 14:58:59,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 14:58:59,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:58:59,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:58:59,522 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:58:59,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-20 14:59:01,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 14:59:01,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 14:59:01,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 14:59:01,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:59:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 288 proven. 23 refuted. 0 times theorem prover too weak. 701 trivial. 0 not checked. [2023-12-20 14:59:01,442 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:59:01,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 288 proven. 23 refuted. 0 times theorem prover too weak. 701 trivial. 0 not checked. [2023-12-20 14:59:01,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305998371] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:59:01,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:59:01,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 10 [2023-12-20 14:59:01,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367453995] [2023-12-20 14:59:01,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:59:01,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:59:01,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:59:01,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:59:01,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:59:01,529 INFO L87 Difference]: Start difference. First operand 6918 states and 8788 transitions. Second operand has 10 states, 10 states have (on average 20.7) internal successors, (207), 6 states have internal predecessors, (207), 1 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-20 14:59:04,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:59:04,963 INFO L93 Difference]: Finished difference Result 12447 states and 15775 transitions. [2023-12-20 14:59:04,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:59:04,963 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.7) internal successors, (207), 6 states have internal predecessors, (207), 1 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 343 [2023-12-20 14:59:04,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:59:05,001 INFO L225 Difference]: With dead ends: 12447 [2023-12-20 14:59:05,002 INFO L226 Difference]: Without dead ends: 9932 [2023-12-20 14:59:05,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 693 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:59:05,005 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 174 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:59:05,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 1194 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-20 14:59:05,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9932 states. [2023-12-20 14:59:05,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9932 to 6878. [2023-12-20 14:59:05,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6878 states, 6782 states have (on average 1.2583308758478324) internal successors, (8534), 6811 states have internal predecessors, (8534), 87 states have call successors, (87), 8 states have call predecessors, (87), 8 states have return successors, (87), 64 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-20 14:59:05,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6878 states to 6878 states and 8708 transitions. [2023-12-20 14:59:05,149 INFO L78 Accepts]: Start accepts. Automaton has 6878 states and 8708 transitions. Word has length 343 [2023-12-20 14:59:05,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:59:05,150 INFO L495 AbstractCegarLoop]: Abstraction has 6878 states and 8708 transitions. [2023-12-20 14:59:05,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.7) internal successors, (207), 6 states have internal predecessors, (207), 1 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-20 14:59:05,150 INFO L276 IsEmpty]: Start isEmpty. Operand 6878 states and 8708 transitions. [2023-12-20 14:59:05,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2023-12-20 14:59:05,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:59:05,160 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:59:05,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-20 14:59:05,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-20 14:59:05,373 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:59:05,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:59:05,374 INFO L85 PathProgramCache]: Analyzing trace with hash 589285822, now seen corresponding path program 1 times [2023-12-20 14:59:05,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:59:05,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750266412] [2023-12-20 14:59:05,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:59:05,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:59:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:06,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:59:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:06,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:59:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:06,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:59:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:06,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 14:59:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:07,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 14:59:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:07,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-20 14:59:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:07,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2023-12-20 14:59:07,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:59:07,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750266412] [2023-12-20 14:59:07,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750266412] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:59:07,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:59:07,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-20 14:59:07,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418995746] [2023-12-20 14:59:07,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:59:07,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-20 14:59:07,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:59:07,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-20 14:59:07,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:59:07,081 INFO L87 Difference]: Start difference. First operand 6878 states and 8708 transitions. Second operand has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 7 states have internal predecessors, (130), 1 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-20 14:59:10,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:59:10,499 INFO L93 Difference]: Finished difference Result 15579 states and 19239 transitions. [2023-12-20 14:59:10,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:59:10,499 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 7 states have internal predecessors, (130), 1 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 373 [2023-12-20 14:59:10,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:59:10,510 INFO L225 Difference]: With dead ends: 15579 [2023-12-20 14:59:10,510 INFO L226 Difference]: Without dead ends: 9758 [2023-12-20 14:59:10,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2023-12-20 14:59:10,517 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 131 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:59:10,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 1072 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-20 14:59:10,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9758 states. [2023-12-20 14:59:10,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9758 to 7734. [2023-12-20 14:59:10,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7734 states, 7638 states have (on average 1.257135375752815) internal successors, (9602), 7667 states have internal predecessors, (9602), 87 states have call successors, (87), 8 states have call predecessors, (87), 8 states have return successors, (87), 64 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-20 14:59:10,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7734 states to 7734 states and 9776 transitions. [2023-12-20 14:59:10,687 INFO L78 Accepts]: Start accepts. Automaton has 7734 states and 9776 transitions. Word has length 373 [2023-12-20 14:59:10,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:59:10,687 INFO L495 AbstractCegarLoop]: Abstraction has 7734 states and 9776 transitions. [2023-12-20 14:59:10,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 7 states have internal predecessors, (130), 1 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-20 14:59:10,687 INFO L276 IsEmpty]: Start isEmpty. Operand 7734 states and 9776 transitions. [2023-12-20 14:59:10,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2023-12-20 14:59:10,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:59:10,699 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:59:10,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-20 14:59:10,700 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:59:10,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:59:10,700 INFO L85 PathProgramCache]: Analyzing trace with hash 651509472, now seen corresponding path program 2 times [2023-12-20 14:59:10,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:59:10,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809018258] [2023-12-20 14:59:10,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:59:10,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:59:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:11,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:59:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:11,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:59:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:11,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:59:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:11,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 14:59:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:11,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 14:59:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:11,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-20 14:59:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:11,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2023-12-20 14:59:11,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:59:11,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809018258] [2023-12-20 14:59:11,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809018258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:59:11,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:59:11,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-20 14:59:11,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683940625] [2023-12-20 14:59:11,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:59:11,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-20 14:59:11,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:59:11,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-20 14:59:11,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:59:11,504 INFO L87 Difference]: Start difference. First operand 7734 states and 9776 transitions. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 7 states have internal predecessors, (139), 1 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-20 14:59:14,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:59:14,669 INFO L93 Difference]: Finished difference Result 16114 states and 20034 transitions. [2023-12-20 14:59:14,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:59:14,670 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 7 states have internal predecessors, (139), 1 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 373 [2023-12-20 14:59:14,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:59:14,679 INFO L225 Difference]: With dead ends: 16114 [2023-12-20 14:59:14,679 INFO L226 Difference]: Without dead ends: 9597 [2023-12-20 14:59:14,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2023-12-20 14:59:14,686 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 94 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:59:14,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 1146 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 14:59:14,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9597 states. [2023-12-20 14:59:14,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9597 to 8526. [2023-12-20 14:59:14,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8526 states, 8430 states have (on average 1.2419928825622777) internal successors, (10470), 8459 states have internal predecessors, (10470), 87 states have call successors, (87), 8 states have call predecessors, (87), 8 states have return successors, (87), 64 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-20 14:59:14,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8526 states to 8526 states and 10644 transitions. [2023-12-20 14:59:14,800 INFO L78 Accepts]: Start accepts. Automaton has 8526 states and 10644 transitions. Word has length 373 [2023-12-20 14:59:14,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:59:14,801 INFO L495 AbstractCegarLoop]: Abstraction has 8526 states and 10644 transitions. [2023-12-20 14:59:14,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 7 states have internal predecessors, (139), 1 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-20 14:59:14,801 INFO L276 IsEmpty]: Start isEmpty. Operand 8526 states and 10644 transitions. [2023-12-20 14:59:14,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2023-12-20 14:59:14,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:59:14,810 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:59:14,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-20 14:59:14,810 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:59:14,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:59:14,810 INFO L85 PathProgramCache]: Analyzing trace with hash -89768476, now seen corresponding path program 3 times [2023-12-20 14:59:14,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:59:14,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420859457] [2023-12-20 14:59:14,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:59:14,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:59:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:18,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:59:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:18,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:59:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:18,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:59:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:18,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 14:59:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:18,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 14:59:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:18,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-20 14:59:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:18,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1096 trivial. 0 not checked. [2023-12-20 14:59:18,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:59:18,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420859457] [2023-12-20 14:59:18,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420859457] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:59:18,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:59:18,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-20 14:59:18,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194472236] [2023-12-20 14:59:18,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:59:18,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-20 14:59:18,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:59:18,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-20 14:59:18,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:59:18,347 INFO L87 Difference]: Start difference. First operand 8526 states and 10644 transitions. Second operand has 11 states, 10 states have (on average 11.5) internal successors, (115), 7 states have internal predecessors, (115), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-20 14:59:24,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:59:24,861 INFO L93 Difference]: Finished difference Result 24848 states and 30954 transitions. [2023-12-20 14:59:24,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:59:24,862 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.5) internal successors, (115), 7 states have internal predecessors, (115), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 373 [2023-12-20 14:59:24,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:59:24,879 INFO L225 Difference]: With dead ends: 24848 [2023-12-20 14:59:24,880 INFO L226 Difference]: Without dead ends: 16555 [2023-12-20 14:59:24,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-12-20 14:59:24,893 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 200 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:59:24,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1715 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-20 14:59:24,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16555 states. [2023-12-20 14:59:25,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16555 to 8514. [2023-12-20 14:59:25,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8514 states, 8420 states have (on average 1.2418052256532066) internal successors, (10456), 8449 states have internal predecessors, (10456), 85 states have call successors, (85), 8 states have call predecessors, (85), 8 states have return successors, (85), 62 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-20 14:59:25,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8514 states to 8514 states and 10626 transitions. [2023-12-20 14:59:25,095 INFO L78 Accepts]: Start accepts. Automaton has 8514 states and 10626 transitions. Word has length 373 [2023-12-20 14:59:25,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:59:25,095 INFO L495 AbstractCegarLoop]: Abstraction has 8514 states and 10626 transitions. [2023-12-20 14:59:25,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.5) internal successors, (115), 7 states have internal predecessors, (115), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-20 14:59:25,095 INFO L276 IsEmpty]: Start isEmpty. Operand 8514 states and 10626 transitions. [2023-12-20 14:59:25,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2023-12-20 14:59:25,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:59:25,105 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:59:25,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-20 14:59:25,106 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:59:25,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:59:25,106 INFO L85 PathProgramCache]: Analyzing trace with hash 76940903, now seen corresponding path program 1 times [2023-12-20 14:59:25,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:59:25,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557258753] [2023-12-20 14:59:25,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:59:25,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:59:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:33,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:59:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:33,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:59:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:33,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:59:33,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:33,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 14:59:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:33,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 14:59:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:33,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-20 14:59:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:33,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-20 14:59:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:33,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 313 proven. 520 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-12-20 14:59:33,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:59:33,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557258753] [2023-12-20 14:59:33,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557258753] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:59:33,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087615063] [2023-12-20 14:59:33,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:59:33,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:59:33,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:59:33,917 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:59:33,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-20 14:59:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:34,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 1582 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-20 14:59:34,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:59:35,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 64 [2023-12-20 14:59:35,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 1094 trivial. 0 not checked. [2023-12-20 14:59:35,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:59:35,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087615063] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:59:35,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:59:35,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [34] total 38 [2023-12-20 14:59:35,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881552260] [2023-12-20 14:59:35,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:59:35,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:59:35,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:59:35,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:59:35,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1311, Unknown=0, NotChecked=0, Total=1406 [2023-12-20 14:59:35,277 INFO L87 Difference]: Start difference. First operand 8514 states and 10626 transitions. Second operand has 6 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:59:38,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:59:38,003 INFO L93 Difference]: Finished difference Result 16889 states and 21052 transitions. [2023-12-20 14:59:38,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:59:38,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 381 [2023-12-20 14:59:38,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:59:38,014 INFO L225 Difference]: With dead ends: 16889 [2023-12-20 14:59:38,014 INFO L226 Difference]: Without dead ends: 8507 [2023-12-20 14:59:38,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=105, Invalid=1455, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 14:59:38,024 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 38 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:59:38,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 788 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 14:59:38,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8507 states. [2023-12-20 14:59:38,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8507 to 8480. [2023-12-20 14:59:38,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8480 states, 8394 states have (on average 1.2412437455325231) internal successors, (10419), 8415 states have internal predecessors, (10419), 77 states have call successors, (77), 8 states have call predecessors, (77), 8 states have return successors, (77), 62 states have call predecessors, (77), 77 states have call successors, (77) [2023-12-20 14:59:38,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 10573 transitions. [2023-12-20 14:59:38,142 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 10573 transitions. Word has length 381 [2023-12-20 14:59:38,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:59:38,142 INFO L495 AbstractCegarLoop]: Abstraction has 8480 states and 10573 transitions. [2023-12-20 14:59:38,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:59:38,142 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 10573 transitions. [2023-12-20 14:59:38,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2023-12-20 14:59:38,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:59:38,151 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:59:38,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-20 14:59:38,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-20 14:59:38,362 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:59:38,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:59:38,362 INFO L85 PathProgramCache]: Analyzing trace with hash -533170593, now seen corresponding path program 1 times [2023-12-20 14:59:38,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:59:38,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305798774] [2023-12-20 14:59:38,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:59:38,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:59:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:40,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:59:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:40,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:59:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:40,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:59:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:40,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 14:59:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:40,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-20 14:59:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:40,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-20 14:59:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:40,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:59:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:40,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 14:59:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:40,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1103 trivial. 0 not checked. [2023-12-20 14:59:40,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:59:40,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305798774] [2023-12-20 14:59:40,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305798774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:59:40,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:59:40,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-20 14:59:40,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654321888] [2023-12-20 14:59:40,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:59:40,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 14:59:40,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:59:40,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 14:59:40,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:59:40,460 INFO L87 Difference]: Start difference. First operand 8480 states and 10573 transitions. Second operand has 13 states, 12 states have (on average 10.25) internal successors, (123), 7 states have internal predecessors, (123), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-20 14:59:44,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:59:44,136 INFO L93 Difference]: Finished difference Result 16916 states and 21094 transitions. [2023-12-20 14:59:44,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 14:59:44,136 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 10.25) internal successors, (123), 7 states have internal predecessors, (123), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 387 [2023-12-20 14:59:44,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:59:44,172 INFO L225 Difference]: With dead ends: 16916 [2023-12-20 14:59:44,173 INFO L226 Difference]: Without dead ends: 8635 [2023-12-20 14:59:44,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2023-12-20 14:59:44,180 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 135 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:59:44,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1367 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-20 14:59:44,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8635 states. [2023-12-20 14:59:44,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8635 to 8554. [2023-12-20 14:59:44,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8554 states, 8459 states have (on average 1.2412814753516965) internal successors, (10500), 8484 states have internal predecessors, (10500), 86 states have call successors, (86), 8 states have call predecessors, (86), 8 states have return successors, (86), 69 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-20 14:59:44,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8554 states to 8554 states and 10672 transitions. [2023-12-20 14:59:44,477 INFO L78 Accepts]: Start accepts. Automaton has 8554 states and 10672 transitions. Word has length 387 [2023-12-20 14:59:44,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:59:44,477 INFO L495 AbstractCegarLoop]: Abstraction has 8554 states and 10672 transitions. [2023-12-20 14:59:44,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 10.25) internal successors, (123), 7 states have internal predecessors, (123), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-20 14:59:44,477 INFO L276 IsEmpty]: Start isEmpty. Operand 8554 states and 10672 transitions. [2023-12-20 14:59:44,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2023-12-20 14:59:44,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:59:44,486 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:59:44,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-20 14:59:44,486 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:59:44,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:59:44,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1111360915, now seen corresponding path program 1 times [2023-12-20 14:59:44,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:59:44,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795961324] [2023-12-20 14:59:44,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:59:44,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:59:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:46,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:59:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:46,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:59:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:46,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 14:59:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:46,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 14:59:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:46,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-20 14:59:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:46,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 14:59:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:46,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-20 14:59:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:46,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-20 14:59:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:46,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1118 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2023-12-20 14:59:46,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:59:46,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795961324] [2023-12-20 14:59:46,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795961324] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:59:46,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573233310] [2023-12-20 14:59:46,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:59:46,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:59:46,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:59:46,447 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:59:46,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-20 14:59:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:59:47,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 1798 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 14:59:47,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:59:47,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 64 [2023-12-20 14:59:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1118 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 1076 trivial. 0 not checked. [2023-12-20 14:59:47,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:59:56,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1118 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 1077 trivial. 0 not checked. [2023-12-20 14:59:56,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573233310] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:59:56,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:59:56,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 7] total 24 [2023-12-20 14:59:56,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034256610] [2023-12-20 14:59:56,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:59:56,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-20 14:59:56,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:59:56,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-20 14:59:56,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2023-12-20 14:59:56,963 INFO L87 Difference]: Start difference. First operand 8554 states and 10672 transitions. Second operand has 24 states, 20 states have (on average 10.75) internal successors, (215), 17 states have internal predecessors, (215), 8 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) [2023-12-20 15:00:06,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:00:06,065 INFO L93 Difference]: Finished difference Result 17132 states and 21366 transitions. [2023-12-20 15:00:06,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-20 15:00:06,066 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 10.75) internal successors, (215), 17 states have internal predecessors, (215), 8 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) Word has length 394 [2023-12-20 15:00:06,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:00:06,076 INFO L225 Difference]: With dead ends: 17132 [2023-12-20 15:00:06,076 INFO L226 Difference]: Without dead ends: 8713 [2023-12-20 15:00:06,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 790 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=191, Invalid=1449, Unknown=0, NotChecked=0, Total=1640 [2023-12-20 15:00:06,121 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 332 mSDsluCounter, 2545 mSDsCounter, 0 mSdLazyCounter, 1510 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-12-20 15:00:06,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 2721 Invalid, 1641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1510 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-12-20 15:00:06,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8713 states. [2023-12-20 15:00:06,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8713 to 8467. [2023-12-20 15:00:06,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8467 states, 8385 states have (on average 1.2412641621943947) internal successors, (10408), 8406 states have internal predecessors, (10408), 73 states have call successors, (73), 8 states have call predecessors, (73), 8 states have return successors, (73), 58 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-20 15:00:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8467 states to 8467 states and 10554 transitions. [2023-12-20 15:00:06,359 INFO L78 Accepts]: Start accepts. Automaton has 8467 states and 10554 transitions. Word has length 394 [2023-12-20 15:00:06,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:00:06,360 INFO L495 AbstractCegarLoop]: Abstraction has 8467 states and 10554 transitions. [2023-12-20 15:00:06,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 10.75) internal successors, (215), 17 states have internal predecessors, (215), 8 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) [2023-12-20 15:00:06,360 INFO L276 IsEmpty]: Start isEmpty. Operand 8467 states and 10554 transitions. [2023-12-20 15:00:06,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-12-20 15:00:06,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:00:06,378 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:00:06,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-20 15:00:06,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-12-20 15:00:06,595 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:00:06,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:00:06,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1958431029, now seen corresponding path program 1 times [2023-12-20 15:00:06,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:00:06,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220277656] [2023-12-20 15:00:06,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:00:06,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:00:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:09,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 15:00:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:09,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 15:00:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:09,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 15:00:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:09,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 15:00:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:09,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-20 15:00:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:09,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 15:00:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:09,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-20 15:00:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:09,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-20 15:00:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:09,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-20 15:00:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:09,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-20 15:00:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 1114 trivial. 0 not checked. [2023-12-20 15:00:09,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:00:09,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220277656] [2023-12-20 15:00:09,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220277656] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:00:09,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239732954] [2023-12-20 15:00:09,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:00:09,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:00:09,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:00:09,393 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 15:00:09,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-20 15:00:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:10,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 1951 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 15:00:10,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:00:10,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 15:00:10,908 INFO L224 Elim1Store]: Index analysis took 135 ms [2023-12-20 15:00:10,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 280 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 64 [2023-12-20 15:00:11,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 15:00:11,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 30 [2023-12-20 15:00:11,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 1121 trivial. 0 not checked. [2023-12-20 15:00:11,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 15:00:11,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239732954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:00:11,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 15:00:11,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 20 [2023-12-20 15:00:11,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6313909] [2023-12-20 15:00:11,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:00:11,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 15:00:11,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:00:11,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 15:00:11,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2023-12-20 15:00:11,188 INFO L87 Difference]: Start difference. First operand 8467 states and 10554 transitions. Second operand has 5 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-20 15:00:12,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:00:12,997 INFO L93 Difference]: Finished difference Result 16863 states and 21011 transitions. [2023-12-20 15:00:12,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 15:00:12,997 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 409 [2023-12-20 15:00:12,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:00:13,025 INFO L225 Difference]: With dead ends: 16863 [2023-12-20 15:00:13,025 INFO L226 Difference]: Without dead ends: 8429 [2023-12-20 15:00:13,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2023-12-20 15:00:13,057 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 9 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 15:00:13,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 643 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 15:00:13,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8429 states. [2023-12-20 15:00:13,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8429 to 8429. [2023-12-20 15:00:13,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8429 states, 8356 states have (on average 1.2409047391096217) internal successors, (10369), 8368 states have internal predecessors, (10369), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 58 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-20 15:00:13,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8429 states to 8429 states and 10497 transitions. [2023-12-20 15:00:13,270 INFO L78 Accepts]: Start accepts. Automaton has 8429 states and 10497 transitions. Word has length 409 [2023-12-20 15:00:13,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:00:13,272 INFO L495 AbstractCegarLoop]: Abstraction has 8429 states and 10497 transitions. [2023-12-20 15:00:13,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-20 15:00:13,272 INFO L276 IsEmpty]: Start isEmpty. Operand 8429 states and 10497 transitions. [2023-12-20 15:00:13,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-12-20 15:00:13,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:00:13,305 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:00:13,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-20 15:00:13,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:00:13,523 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:00:13,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:00:13,523 INFO L85 PathProgramCache]: Analyzing trace with hash 553343653, now seen corresponding path program 1 times [2023-12-20 15:00:13,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:00:13,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244043260] [2023-12-20 15:00:13,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:00:13,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:00:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:15,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 15:00:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:15,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 15:00:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:15,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 15:00:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:15,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 15:00:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:15,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 15:00:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:15,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 15:00:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:15,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 15:00:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:16,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-20 15:00:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:16,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 15:00:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:16,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-20 15:00:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:16,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-12-20 15:00:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:16,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 1118 trivial. 0 not checked. [2023-12-20 15:00:16,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:00:16,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244043260] [2023-12-20 15:00:16,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244043260] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:00:16,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123087992] [2023-12-20 15:00:16,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:00:16,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:00:16,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:00:16,304 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 15:00:16,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-20 15:00:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:17,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 2050 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-20 15:00:17,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:00:17,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 15:00:17,827 INFO L224 Elim1Store]: Index analysis took 180 ms [2023-12-20 15:00:17,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 280 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 64 [2023-12-20 15:00:18,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 15:00:18,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 30 [2023-12-20 15:00:18,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2023-12-20 15:00:18,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 15:00:29,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 1103 trivial. 0 not checked. [2023-12-20 15:00:29,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123087992] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 15:00:29,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 15:00:29,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 6, 6] total 25 [2023-12-20 15:00:29,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537946248] [2023-12-20 15:00:29,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 15:00:29,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-20 15:00:29,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:00:29,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-20 15:00:29,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2023-12-20 15:00:29,892 INFO L87 Difference]: Start difference. First operand 8429 states and 10497 transitions. Second operand has 25 states, 20 states have (on average 11.5) internal successors, (230), 17 states have internal predecessors, (230), 7 states have call successors, (27), 8 states have call predecessors, (27), 7 states have return successors, (28), 9 states have call predecessors, (28), 7 states have call successors, (28) [2023-12-20 15:00:36,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:00:36,172 INFO L93 Difference]: Finished difference Result 17069 states and 21277 transitions. [2023-12-20 15:00:36,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 15:00:36,173 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 11.5) internal successors, (230), 17 states have internal predecessors, (230), 7 states have call successors, (27), 8 states have call predecessors, (27), 7 states have return successors, (28), 9 states have call predecessors, (28), 7 states have call successors, (28) Word has length 415 [2023-12-20 15:00:36,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:00:36,192 INFO L225 Difference]: With dead ends: 17069 [2023-12-20 15:00:36,193 INFO L226 Difference]: Without dead ends: 8671 [2023-12-20 15:00:36,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 837 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=169, Invalid=1313, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 15:00:36,216 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 272 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-20 15:00:36,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 2427 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-20 15:00:36,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8671 states. [2023-12-20 15:00:36,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8671 to 8523. [2023-12-20 15:00:36,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8523 states, 8438 states have (on average 1.241052382081062) internal successors, (10472), 8454 states have internal predecessors, (10472), 76 states have call successors, (76), 8 states have call predecessors, (76), 8 states have return successors, (76), 70 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-20 15:00:36,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8523 states to 8523 states and 10624 transitions. [2023-12-20 15:00:36,480 INFO L78 Accepts]: Start accepts. Automaton has 8523 states and 10624 transitions. Word has length 415 [2023-12-20 15:00:36,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:00:36,480 INFO L495 AbstractCegarLoop]: Abstraction has 8523 states and 10624 transitions. [2023-12-20 15:00:36,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 11.5) internal successors, (230), 17 states have internal predecessors, (230), 7 states have call successors, (27), 8 states have call predecessors, (27), 7 states have return successors, (28), 9 states have call predecessors, (28), 7 states have call successors, (28) [2023-12-20 15:00:36,480 INFO L276 IsEmpty]: Start isEmpty. Operand 8523 states and 10624 transitions. [2023-12-20 15:00:36,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-20 15:00:36,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:00:36,515 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:00:36,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-20 15:00:36,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:00:36,729 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:00:36,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:00:36,730 INFO L85 PathProgramCache]: Analyzing trace with hash -2108292777, now seen corresponding path program 1 times [2023-12-20 15:00:36,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:00:36,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876869882] [2023-12-20 15:00:36,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:00:36,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:00:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:38,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 15:00:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:38,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 15:00:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:38,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 15:00:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:39,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 15:00:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:39,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 15:00:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:39,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-20 15:00:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:39,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-20 15:00:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:39,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-20 15:00:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:39,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 15:00:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:39,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-20 15:00:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:39,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-20 15:00:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:39,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-20 15:00:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 1129 trivial. 0 not checked. [2023-12-20 15:00:39,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:00:39,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876869882] [2023-12-20 15:00:39,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876869882] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:00:39,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784926737] [2023-12-20 15:00:39,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:00:39,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:00:39,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:00:39,335 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 15:00:39,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-20 15:00:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:00:40,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 2153 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-20 15:00:40,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:00:40,747 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 26 treesize of output 24 [2023-12-20 15:00:41,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 27 [2023-12-20 15:00:41,094 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 15:00:41,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2023-12-20 15:00:41,099 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 169 treesize of output 164 [2023-12-20 15:00:41,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 15:00:41,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 15:00:41,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 46 [2023-12-20 15:00:42,048 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2023-12-20 15:00:42,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 42 [2023-12-20 15:00:42,120 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 31 treesize of output 15 [2023-12-20 15:00:42,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 26 proven. 16 refuted. 0 times theorem prover too weak. 1114 trivial. 0 not checked. [2023-12-20 15:00:42,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 15:00:42,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784926737] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:00:42,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 15:00:42,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 26 [2023-12-20 15:00:42,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119381715] [2023-12-20 15:00:42,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 15:00:42,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-20 15:00:42,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:00:42,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-20 15:00:42,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=717, Unknown=13, NotChecked=0, Total=812 [2023-12-20 15:00:42,266 INFO L87 Difference]: Start difference. First operand 8523 states and 10624 transitions. Second operand has 26 states, 22 states have (on average 10.318181818181818) internal successors, (227), 19 states have internal predecessors, (227), 7 states have call successors, (20), 9 states have call predecessors, (20), 7 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2023-12-20 15:00:46,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 15:00:49,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 15:00:55,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 15:01:02,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 15:01:08,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 15:01:15,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 15:01:17,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 15:01:21,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 15:01:24,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 15:01:26,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 15:01:31,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 15:01:35,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 15:01:37,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-20 15:01:38,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:01:38,378 INFO L93 Difference]: Finished difference Result 25399 states and 31691 transitions. [2023-12-20 15:01:38,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-20 15:01:38,379 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 10.318181818181818) internal successors, (227), 19 states have internal predecessors, (227), 7 states have call successors, (20), 9 states have call predecessors, (20), 7 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) Word has length 423 [2023-12-20 15:01:38,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:01:38,433 INFO L225 Difference]: With dead ends: 25399 [2023-12-20 15:01:38,433 INFO L226 Difference]: Without dead ends: 17093 [2023-12-20 15:01:38,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=591, Invalid=3952, Unknown=13, NotChecked=0, Total=4556 [2023-12-20 15:01:38,460 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 976 mSDsluCounter, 5248 mSDsCounter, 0 mSdLazyCounter, 2567 mSolverCounterSat, 253 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 5661 SdHoareTripleChecker+Invalid, 2825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 2567 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.6s IncrementalHoareTripleChecker+Time [2023-12-20 15:01:38,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 5661 Invalid, 2825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 2567 Invalid, 5 Unknown, 0 Unchecked, 48.6s Time] [2023-12-20 15:01:38,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17093 states. [2023-12-20 15:01:38,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17093 to 8758. [2023-12-20 15:01:38,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8758 states, 8643 states have (on average 1.2408885803540437) internal successors, (10725), 8664 states have internal predecessors, (10725), 103 states have call successors, (103), 11 states have call predecessors, (103), 11 states have return successors, (110), 97 states have call predecessors, (110), 103 states have call successors, (110) [2023-12-20 15:01:38,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8758 states to 8758 states and 10938 transitions. [2023-12-20 15:01:38,874 INFO L78 Accepts]: Start accepts. Automaton has 8758 states and 10938 transitions. Word has length 423 [2023-12-20 15:01:38,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:01:38,874 INFO L495 AbstractCegarLoop]: Abstraction has 8758 states and 10938 transitions. [2023-12-20 15:01:38,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 10.318181818181818) internal successors, (227), 19 states have internal predecessors, (227), 7 states have call successors, (20), 9 states have call predecessors, (20), 7 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2023-12-20 15:01:38,874 INFO L276 IsEmpty]: Start isEmpty. Operand 8758 states and 10938 transitions. [2023-12-20 15:01:38,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2023-12-20 15:01:38,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:01:38,901 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:01:38,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-20 15:01:39,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:01:39,113 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:01:39,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:01:39,114 INFO L85 PathProgramCache]: Analyzing trace with hash 316691721, now seen corresponding path program 1 times [2023-12-20 15:01:39,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:01:39,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720624509] [2023-12-20 15:01:39,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:01:39,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:01:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:41,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 15:01:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:41,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 15:01:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:41,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 15:01:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:41,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 15:01:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:41,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 15:01:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:41,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-20 15:01:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:41,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-20 15:01:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:41,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-20 15:01:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:41,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 15:01:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:41,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-20 15:01:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:41,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-20 15:01:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:41,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-20 15:01:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:41,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-12-20 15:01:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:41,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1178 trivial. 0 not checked. [2023-12-20 15:01:41,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:01:41,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720624509] [2023-12-20 15:01:41,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720624509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:01:41,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:01:41,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-20 15:01:41,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7196291] [2023-12-20 15:01:41,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:01:41,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 15:01:41,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:01:41,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 15:01:41,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-12-20 15:01:41,458 INFO L87 Difference]: Start difference. First operand 8758 states and 10938 transitions. Second operand has 13 states, 12 states have (on average 11.083333333333334) internal successors, (133), 6 states have internal predecessors, (133), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-20 15:01:45,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:01:45,208 INFO L93 Difference]: Finished difference Result 17165 states and 21430 transitions. [2023-12-20 15:01:45,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 15:01:45,208 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 11.083333333333334) internal successors, (133), 6 states have internal predecessors, (133), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 432 [2023-12-20 15:01:45,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:01:45,225 INFO L225 Difference]: With dead ends: 17165 [2023-12-20 15:01:45,225 INFO L226 Difference]: Without dead ends: 9230 [2023-12-20 15:01:45,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2023-12-20 15:01:45,232 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 242 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-20 15:01:45,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 1229 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-20 15:01:45,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9230 states. [2023-12-20 15:01:45,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9230 to 9170. [2023-12-20 15:01:45,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9170 states, 9005 states have (on average 1.241199333703498) internal successors, (11177), 9038 states have internal predecessors, (11177), 153 states have call successors, (153), 11 states have call predecessors, (153), 11 states have return successors, (163), 144 states have call predecessors, (163), 153 states have call successors, (163) [2023-12-20 15:01:45,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9170 states to 9170 states and 11493 transitions. [2023-12-20 15:01:45,423 INFO L78 Accepts]: Start accepts. Automaton has 9170 states and 11493 transitions. Word has length 432 [2023-12-20 15:01:45,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:01:45,423 INFO L495 AbstractCegarLoop]: Abstraction has 9170 states and 11493 transitions. [2023-12-20 15:01:45,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 11.083333333333334) internal successors, (133), 6 states have internal predecessors, (133), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-20 15:01:45,423 INFO L276 IsEmpty]: Start isEmpty. Operand 9170 states and 11493 transitions. [2023-12-20 15:01:45,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2023-12-20 15:01:45,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:01:45,432 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:01:45,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-12-20 15:01:45,432 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:01:45,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:01:45,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1042718535, now seen corresponding path program 1 times [2023-12-20 15:01:45,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:01:45,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107223959] [2023-12-20 15:01:45,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:01:45,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:01:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:55,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 15:01:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:55,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 15:01:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:55,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 15:01:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:55,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 15:01:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:55,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 15:01:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:55,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-20 15:01:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:55,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-20 15:01:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:55,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-20 15:01:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:55,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 15:01:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:55,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-20 15:01:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:55,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-20 15:01:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:55,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-20 15:01:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:56,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-12-20 15:01:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:56,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-20 15:01:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:56,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 355 proven. 141 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2023-12-20 15:01:56,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:01:56,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107223959] [2023-12-20 15:01:56,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107223959] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:01:56,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147094429] [2023-12-20 15:01:56,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:01:56,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:01:56,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:01:56,778 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 15:01:56,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-20 15:01:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:01:59,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 2455 conjuncts, 547 conjunts are in the unsatisfiable core [2023-12-20 15:01:59,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:01:59,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 22 [2023-12-20 15:01:59,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 28 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 52 [2023-12-20 15:01:59,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 55 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 89 [2023-12-20 15:01:59,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 105 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 122 [2023-12-20 15:02:00,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 153 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 152 [2023-12-20 15:02:00,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 210 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 182 [2023-12-20 15:02:00,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 276 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 226 [2023-12-20 15:02:00,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 24 select indices, 24 select index equivalence classes, 406 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 276 [2023-12-20 15:02:01,183 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 15:02:01,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 29 select indices, 29 select index equivalence classes, 561 disjoint index pairs (out of 406 index pairs), introduced 29 new quantified variables, introduced 406 case distinctions, treesize of input 227 treesize of output 326 [2023-12-20 15:02:03,971 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 18 treesize of output 19 [2023-12-20 15:02:39,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 181 [2023-12-20 15:02:50,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2023-12-20 15:03:01,305 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 97 treesize of output 69 [2023-12-20 15:03:06,423 INFO L349 Elim1Store]: treesize reduction 2720, result has 39.9 percent of original size [2023-12-20 15:03:06,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 102 select indices, 102 select index equivalence classes, 708 disjoint index pairs (out of 5151 index pairs), introduced 102 new quantified variables, introduced 5253 case distinctions, treesize of input 778 treesize of output 2184 [2023-12-20 15:03:17,610 INFO L349 Elim1Store]: treesize reduction 173, result has 6.0 percent of original size [2023-12-20 15:03:17,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 40 select indices, 40 select index equivalence classes, 190 disjoint index pairs (out of 780 index pairs), introduced 40 new quantified variables, introduced 781 case distinctions, treesize of input 292 treesize of output 405 [2023-12-20 15:04:14,180 INFO L349 Elim1Store]: treesize reduction 116, result has 31.0 percent of original size [2023-12-20 15:04:14,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 11 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 50 case distinctions, treesize of input 106 treesize of output 96 [2023-12-20 15:04:25,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15 [2023-12-20 15:04:26,301 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 15:04:26,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 107 [2023-12-20 15:04:26,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 15:04:26,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 114 [2023-12-20 15:04:27,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 15:04:27,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 15:04:27,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 15:04:27,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 15:04:27,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 15:04:37,689 WARN L293 SmtUtils]: Spent 9.86s on a formula simplification. DAG size of input: 1144 DAG size of output: 557 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-12-20 15:04:37,690 INFO L349 Elim1Store]: treesize reduction 4898, result has 29.3 percent of original size [2023-12-20 15:04:37,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 107 select indices, 107 select index equivalence classes, 881 disjoint index pairs (out of 5671 index pairs), introduced 107 new quantified variables, introduced 5773 case distinctions, treesize of input 1291 treesize of output 2880 [2023-12-20 15:04:38,294 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 2430 treesize of output 1882 [2023-12-20 15:05:50,276 INFO L349 Elim1Store]: treesize reduction 173, result has 6.0 percent of original size [2023-12-20 15:05:50,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 40 select indices, 40 select index equivalence classes, 190 disjoint index pairs (out of 780 index pairs), introduced 40 new quantified variables, introduced 781 case distinctions, treesize of input 292 treesize of output 405 [2023-12-20 15:06:16,865 INFO L349 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2023-12-20 15:06:16,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 56 treesize of output 59 [2023-12-20 15:07:10,122 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 77 treesize of output 57 [2023-12-20 15:07:10,167 WARN L876 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~#litmus_input~0#1.base_BEFORE_CALL_15| Int)) (let ((.cse0 (select |c_#memory_int#3| |v_ULTIMATE.start_main_~#litmus_input~0#1.base_BEFORE_CALL_15|))) (and (= (select .cse0 90) 1) (= (select .cse0 72) 0) (= (select .cse0 88) 1) (= (select .cse0 160) 1) (= (select .cse0 6) 1) (= (select .cse0 12) 0) (= (select .cse0 97) 0) (= (select .cse0 5) 0) (= (select .cse0 164) 1) (= (select .cse0 92) 3) (= 1 (select .cse0 15)) (= (select .cse0 7) 0) (= 2 (select .cse0 156)) (= (select .cse0 96) 1) (= (select .cse0 4) 0) (= 2 (select .cse0 91)) (= (select .cse0 13) 1) (= (select .cse0 89) 1) (= (select .cse0 76) 1) (= (select .cse0 84) 1)))) (exists ((|v_ULTIMATE.start_main_~#input_action~0#1.base_BEFORE_CALL_4| Int)) (let ((.cse1 (select |c_#memory_int#1| |v_ULTIMATE.start_main_~#input_action~0#1.base_BEFORE_CALL_4|))) (and (= (select .cse1 7) 0) (= (select .cse1 5) 0) (= (select .cse1 0) 1) (= (select .cse1 4) 0) (= (select .cse1 6) 1)))) (exists ((v_z_277 Int) (tso_core_write_~g_history.offset Int)) (and (<= |c_tso_core_write_#in~g_history.offset| tso_core_write_~g_history.offset) (= |c_#memory_int#6| (store |c_old(#memory_int#6)| |c_tso_core_write_#in~g_history.base| (let ((.cse2 (* v_z_277 8))) (store (store (store (store (store (select |c_old(#memory_int#6)| |c_tso_core_write_#in~g_history.base|) (+ .cse2 tso_core_write_~g_history.offset) |c_tso_core_write_#in~user_action.type|) (+ .cse2 4 tso_core_write_~g_history.offset) |c_tso_core_write_#in~user_action.thread|) (+ 5 .cse2 tso_core_write_~g_history.offset) |c_tso_core_write_#in~user_action.address|) (+ .cse2 6 tso_core_write_~g_history.offset) |c_tso_core_write_#in~user_action.data|) (+ 7 .cse2 tso_core_write_~g_history.offset) |c_tso_core_write_#in~user_action.mdata|)))) (<= 0 v_z_277) (<= v_z_277 255)))) is different from true [2023-12-20 15:07:14,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 15:07:14,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 15:07:14,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 15:07:14,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 15:07:14,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 15:07:14,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 15:07:14,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 15:07:14,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 15:07:14,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 15:07:14,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 15:09:53,907 WARN L293 SmtUtils]: Spent 2.66m on a formula simplification. DAG size of input: 2390 DAG size of output: 1249 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-12-20 15:09:53,909 INFO L349 Elim1Store]: treesize reduction 21822, result has 21.7 percent of original size [2023-12-20 15:09:53,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 103 select indices, 103 select index equivalence classes, 1399 disjoint index pairs (out of 5253 index pairs), introduced 103 new quantified variables, introduced 5356 case distinctions, treesize of input 3061 treesize of output 7412 Received shutdown request... [2023-12-20 15:10:57,484 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 15:10:57,485 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 15:10:57,965 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 15:10:57,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-20 15:10:58,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-12-20 15:10:58,186 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 451 with TraceHistMax 9,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-29-1 term,while PolyPacSimplificationTermWalker was simplifying 29 xjuncts wrt. a ∧-367-36-2-28-2-23-2-19-2-27-1 context. [2023-12-20 15:10:58,191 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 3, 3, 3, 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] [2023-12-20 15:10:58,192 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 15:10:58,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 03:10:58 BoogieIcfgContainer [2023-12-20 15:10:58,196 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 15:10:58,197 INFO L158 Benchmark]: Toolchain (without parser) took 836367.60ms. Allocated memory was 244.3MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 190.5MB in the beginning and 861.5MB in the end (delta: -670.9MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-20 15:10:58,198 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 174.1MB. Free memory is still 120.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 15:10:58,198 INFO L158 Benchmark]: CACSL2BoogieTranslator took 353.00ms. Allocated memory is still 244.3MB. Free memory was 190.0MB in the beginning and 169.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-20 15:10:58,199 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.51ms. Allocated memory is still 244.3MB. Free memory was 169.0MB in the beginning and 162.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-20 15:10:58,199 INFO L158 Benchmark]: Boogie Preprocessor took 150.36ms. Allocated memory is still 244.3MB. Free memory was 162.8MB in the beginning and 152.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-20 15:10:58,199 INFO L158 Benchmark]: RCFGBuilder took 1376.70ms. Allocated memory is still 244.3MB. Free memory was 152.7MB in the beginning and 169.5MB in the end (delta: -16.8MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2023-12-20 15:10:58,199 INFO L158 Benchmark]: TraceAbstraction took 834417.23ms. Allocated memory was 244.3MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 168.4MB in the beginning and 861.5MB in the end (delta: -693.0MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-20 15:10:58,199 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 174.1MB. Free memory is still 120.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 353.00ms. Allocated memory is still 244.3MB. Free memory was 190.0MB in the beginning and 169.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 65.51ms. Allocated memory is still 244.3MB. Free memory was 169.0MB in the beginning and 162.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 150.36ms. Allocated memory is still 244.3MB. Free memory was 162.8MB in the beginning and 152.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * RCFGBuilder took 1376.70ms. Allocated memory is still 244.3MB. Free memory was 152.7MB in the beginning and 169.5MB in the end (delta: -16.8MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. * TraceAbstraction took 834417.23ms. Allocated memory was 244.3MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 168.4MB in the beginning and 861.5MB in the end (delta: -693.0MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 374]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 374). Cancelled while NwaCegarLoop was analyzing trace of length 451 with TraceHistMax 9,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-29-1 term,while PolyPacSimplificationTermWalker was simplifying 29 xjuncts wrt. a ∧-367-36-2-28-2-23-2-19-2-27-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 155 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 834.3s, OverallIterations: 47, TraceHistogramMax: 9, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.4s, AutomataDifference: 178.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 6620 SdHoareTripleChecker+Valid, 164.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6483 mSDsluCounter, 46585 SdHoareTripleChecker+Invalid, 161.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 434 IncrementalHoareTripleChecker+Unchecked, 38528 mSDsCounter, 2031 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20996 IncrementalHoareTripleChecker+Invalid, 23466 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2031 mSolverCounterUnsat, 8057 mSDtfsCounter, 20996 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9705 GetRequests, 8998 SyntacticMatches, 15 SemanticMatches, 692 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2735 ImplicationChecksByTransitivity, 15.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9170occurred in iteration=46, InterpolantAutomatonStates: 515, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.0s AutomataMinimizationTime, 46 MinimizatonAttempts, 40771 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.9s SsaConstructionTime, 11.9s SatisfiabilityAnalysisTime, 63.5s InterpolantComputationTime, 15058 NumberOfCodeBlocks, 14619 NumberOfCodeBlocksAsserted, 83 NumberOfCheckSat, 17898 ConstructedInterpolants, 34 QuantifiedInterpolants, 48497 SizeOfPredicates, 91 NumberOfNonLiveVariables, 27828 ConjunctsInSsa, 303 ConjunctsInUnsatCore, 87 InterpolantComputations, 33 PerfectInterpolantSequences, 36595/38095 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown