/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/neural-networks/softsign_w4_r3_case_1_unsafe.c-amalgamation.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 03:57:54,490 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 03:57:54,549 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 03:57:54,553 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 03:57:54,554 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 03:57:54,576 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 03:57:54,578 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 03:57:54,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 03:57:54,578 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 03:57:54,579 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 03:57:54,580 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 03:57:54,580 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 03:57:54,580 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 03:57:54,580 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 03:57:54,581 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 03:57:54,581 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 03:57:54,581 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 03:57:54,581 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 03:57:54,582 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 03:57:54,582 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 03:57:54,582 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 03:57:54,585 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 03:57:54,585 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 03:57:54,585 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 03:57:54,585 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 03:57:54,585 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 03:57:54,586 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 03:57:54,586 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 03:57:54,586 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 03:57:54,586 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 03:57:54,586 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 03:57:54,586 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 03:57:54,586 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 03:57:54,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 03:57:54,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 03:57:54,587 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 03:57:54,587 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 03:57:54,587 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 03:57:54,587 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 03:57:54,588 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 03:57:54,588 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 03:57:54,588 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 03:57:54,589 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 03:57:54,589 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 03:57:54,589 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 03:57:54,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 03:57:54,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 03:57:54,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 03:57:54,793 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 03:57:54,798 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 03:57:54,799 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/neural-networks/softsign_w4_r3_case_1_unsafe.c-amalgamation.i [2024-11-03 03:57:56,246 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 03:57:56,587 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 03:57:56,587 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/neural-networks/softsign_w4_r3_case_1_unsafe.c-amalgamation.i [2024-11-03 03:57:56,611 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39f837318/a73000ee4ee14e0bb7ac95b98e6cab9a/FLAG082a7b158 [2024-11-03 03:57:56,810 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39f837318/a73000ee4ee14e0bb7ac95b98e6cab9a [2024-11-03 03:57:56,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 03:57:56,813 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 03:57:56,814 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 03:57:56,814 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 03:57:56,825 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 03:57:56,826 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:57:56" (1/1) ... [2024-11-03 03:57:56,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e2acb4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:56, skipping insertion in model container [2024-11-03 03:57:56,828 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:57:56" (1/1) ... [2024-11-03 03:57:56,929 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 03:57:57,575 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/neural-networks/softsign_w4_r3_case_1_unsafe.c-amalgamation.i[71418,71431] [2024-11-03 03:57:57,762 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-03 03:57:57,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 03:57:57,822 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 03:57:57,855 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/neural-networks/softsign_w4_r3_case_1_unsafe.c-amalgamation.i[71418,71431] [2024-11-03 03:57:58,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 03:57:58,185 INFO L204 MainTranslator]: Completed translation [2024-11-03 03:57:58,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:58 WrapperNode [2024-11-03 03:57:58,186 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 03:57:58,186 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 03:57:58,186 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 03:57:58,187 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 03:57:58,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:58" (1/1) ... [2024-11-03 03:57:58,288 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:58" (1/1) ... [2024-11-03 03:57:58,342 INFO L138 Inliner]: procedures = 780, calls = 721, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 421 [2024-11-03 03:57:58,345 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 03:57:58,346 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 03:57:58,346 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 03:57:58,346 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 03:57:58,355 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:58" (1/1) ... [2024-11-03 03:57:58,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:58" (1/1) ... [2024-11-03 03:57:58,365 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:58" (1/1) ... [2024-11-03 03:57:58,408 INFO L175 MemorySlicer]: Split 185 memory accesses to 12 slices as follows [27, 2, 7, 43, 2, 9, 16, 10, 35, 11, 12, 11]. 23 percent of accesses are in the largest equivalence class. The 91 initializations are split as follows [16, 2, 7, 12, 2, 8, 12, 8, 0, 8, 8, 8]. The 56 writes are split as follows [5, 0, 0, 14, 0, 0, 3, 0, 34, 0, 0, 0]. [2024-11-03 03:57:58,408 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:58" (1/1) ... [2024-11-03 03:57:58,408 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:58" (1/1) ... [2024-11-03 03:57:58,468 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:58" (1/1) ... [2024-11-03 03:57:58,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:58" (1/1) ... [2024-11-03 03:57:58,497 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:58" (1/1) ... [2024-11-03 03:57:58,518 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:58" (1/1) ... [2024-11-03 03:57:58,556 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 03:57:58,557 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 03:57:58,560 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 03:57:58,561 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 03:57:58,561 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:58" (1/1) ... [2024-11-03 03:57:58,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 03:57:58,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 03:57:58,611 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-03 03:57:58,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-03 03:57:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2024-11-03 03:57:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2024-11-03 03:57:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2024-11-03 03:57:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2024-11-03 03:57:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2024-11-03 03:57:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#5 [2024-11-03 03:57:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#6 [2024-11-03 03:57:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#7 [2024-11-03 03:57:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#8 [2024-11-03 03:57:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#9 [2024-11-03 03:57:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#10 [2024-11-03 03:57:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#11 [2024-11-03 03:57:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_simpleRNN [2024-11-03 03:57:58,647 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_simpleRNN [2024-11-03 03:57:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#0 [2024-11-03 03:57:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#1 [2024-11-03 03:57:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#2 [2024-11-03 03:57:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#3 [2024-11-03 03:57:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#4 [2024-11-03 03:57:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#5 [2024-11-03 03:57:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#6 [2024-11-03 03:57:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#7 [2024-11-03 03:57:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#8 [2024-11-03 03:57:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#9 [2024-11-03 03:57:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#10 [2024-11-03 03:57:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4#11 [2024-11-03 03:57:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 03:57:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 03:57:58,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 03:57:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-03 03:57:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-03 03:57:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-03 03:57:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2024-11-03 03:57:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2024-11-03 03:57:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#5 [2024-11-03 03:57:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#6 [2024-11-03 03:57:58,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#7 [2024-11-03 03:57:58,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#8 [2024-11-03 03:57:58,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#9 [2024-11-03 03:57:58,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#10 [2024-11-03 03:57:58,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#11 [2024-11-03 03:57:58,650 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-03 03:57:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-03 03:57:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-03 03:57:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2024-11-03 03:57:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2024-11-03 03:57:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#5 [2024-11-03 03:57:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#6 [2024-11-03 03:57:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#7 [2024-11-03 03:57:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#8 [2024-11-03 03:57:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#9 [2024-11-03 03:57:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#10 [2024-11-03 03:57:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#11 [2024-11-03 03:57:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-03 03:57:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-03 03:57:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-03 03:57:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-03 03:57:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-03 03:57:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-03 03:57:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-03 03:57:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-03 03:57:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-03 03:57:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-03 03:57:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-03 03:57:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-03 03:57:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-03 03:57:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_affine_matmul [2024-11-03 03:57:58,661 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_affine_matmul [2024-11-03 03:57:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_ULONG~TO~VOID [2024-11-03 03:57:58,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_ULONG~TO~VOID [2024-11-03 03:57:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-03 03:57:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 03:57:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-03 03:57:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-03 03:57:58,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-03 03:57:58,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-11-03 03:57:58,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2024-11-03 03:57:58,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2024-11-03 03:57:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2024-11-03 03:57:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2024-11-03 03:57:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9 [2024-11-03 03:57:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#10 [2024-11-03 03:57:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#11 [2024-11-03 03:57:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-03 03:57:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-03 03:57:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-03 03:57:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2024-11-03 03:57:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2024-11-03 03:57:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2024-11-03 03:57:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2024-11-03 03:57:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#7 [2024-11-03 03:57:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#8 [2024-11-03 03:57:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#9 [2024-11-03 03:57:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#10 [2024-11-03 03:57:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#11 [2024-11-03 03:57:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2024-11-03 03:57:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2024-11-03 03:57:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2024-11-03 03:57:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2024-11-03 03:57:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2024-11-03 03:57:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#5 [2024-11-03 03:57:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#6 [2024-11-03 03:57:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#7 [2024-11-03 03:57:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#8 [2024-11-03 03:57:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#9 [2024-11-03 03:57:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#10 [2024-11-03 03:57:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#11 [2024-11-03 03:57:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_simpleRNNcell [2024-11-03 03:57:58,669 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_simpleRNNcell [2024-11-03 03:57:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-03 03:57:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-03 03:57:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-03 03:57:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-03 03:57:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2024-11-03 03:57:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2024-11-03 03:57:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2024-11-03 03:57:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2024-11-03 03:57:58,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#8 [2024-11-03 03:57:58,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#9 [2024-11-03 03:57:58,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#10 [2024-11-03 03:57:58,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#11 [2024-11-03 03:57:58,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2024-11-03 03:57:58,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2024-11-03 03:57:58,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2024-11-03 03:57:58,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2024-11-03 03:57:58,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2024-11-03 03:57:58,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#5 [2024-11-03 03:57:58,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#6 [2024-11-03 03:57:58,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#7 [2024-11-03 03:57:58,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#8 [2024-11-03 03:57:58,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#9 [2024-11-03 03:57:58,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#10 [2024-11-03 03:57:58,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#11 [2024-11-03 03:57:58,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-03 03:57:58,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-03 03:57:58,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-03 03:57:58,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-03 03:57:58,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-03 03:57:58,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-03 03:57:58,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-03 03:57:58,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-03 03:57:58,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-03 03:57:58,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-11-03 03:57:58,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-11-03 03:57:58,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-11-03 03:57:58,907 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 03:57:58,914 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 03:58:09,384 INFO L? ?]: Removed 154 outVars from TransFormulas that were not future-live. [2024-11-03 03:58:09,384 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 03:58:09,400 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 03:58:09,400 INFO L316 CfgBuilder]: Removed 20 assume(true) statements. [2024-11-03 03:58:09,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:58:09 BoogieIcfgContainer [2024-11-03 03:58:09,401 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 03:58:09,402 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 03:58:09,402 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 03:58:09,406 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 03:58:09,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:57:56" (1/3) ... [2024-11-03 03:58:09,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db141bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:58:09, skipping insertion in model container [2024-11-03 03:58:09,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:58" (2/3) ... [2024-11-03 03:58:09,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db141bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:58:09, skipping insertion in model container [2024-11-03 03:58:09,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:58:09" (3/3) ... [2024-11-03 03:58:09,409 INFO L112 eAbstractionObserver]: Analyzing ICFG softsign_w4_r3_case_1_unsafe.c-amalgamation.i [2024-11-03 03:58:09,423 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 03:58:09,427 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 03:58:09,524 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 03:58:09,533 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@353ae998, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 03:58:09,533 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 03:58:09,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 114 states have (on average 1.5350877192982457) internal successors, (175), 115 states have internal predecessors, (175), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-03 03:58:09,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-03 03:58:09,548 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 03:58:09,549 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 03:58:09,550 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 03:58:09,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 03:58:09,554 INFO L85 PathProgramCache]: Analyzing trace with hash 67219695, now seen corresponding path program 1 times [2024-11-03 03:58:09,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 03:58:09,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650830414] [2024-11-03 03:58:09,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 03:58:09,564 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 03:58:09,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 03:58:09,566 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 03:58:09,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 03:58:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 03:58:10,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 03:58:10,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 03:58:10,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 03:58:10,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 03:58:10,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 03:58:10,521 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 03:58:10,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650830414] [2024-11-03 03:58:10,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [650830414] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 03:58:10,522 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 03:58:10,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 03:58:10,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788618562] [2024-11-03 03:58:10,524 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 03:58:10,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 03:58:10,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 03:58:10,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 03:58:10,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 03:58:10,548 INFO L87 Difference]: Start difference. First operand has 128 states, 114 states have (on average 1.5350877192982457) internal successors, (175), 115 states have internal predecessors, (175), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 03:58:10,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 03:58:10,572 INFO L93 Difference]: Finished difference Result 252 states and 378 transitions. [2024-11-03 03:58:10,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 03:58:10,575 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-03 03:58:10,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 03:58:10,581 INFO L225 Difference]: With dead ends: 252 [2024-11-03 03:58:10,581 INFO L226 Difference]: Without dead ends: 124 [2024-11-03 03:58:10,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 03:58:10,587 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 03:58:10,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 03:58:10,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-03 03:58:10,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-11-03 03:58:10,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 111 states have (on average 1.3423423423423424) internal successors, (149), 111 states have internal predecessors, (149), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-03 03:58:10,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 163 transitions. [2024-11-03 03:58:10,628 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 163 transitions. Word has length 17 [2024-11-03 03:58:10,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 03:58:10,628 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 163 transitions. [2024-11-03 03:58:10,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 03:58:10,629 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 163 transitions. [2024-11-03 03:58:10,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-03 03:58:10,629 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 03:58:10,629 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 03:58:10,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-03 03:58:10,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 03:58:10,830 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 03:58:10,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 03:58:10,831 INFO L85 PathProgramCache]: Analyzing trace with hash 612732690, now seen corresponding path program 1 times [2024-11-03 03:58:10,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 03:58:10,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739690716] [2024-11-03 03:58:10,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 03:58:10,832 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 03:58:10,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 03:58:10,836 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 03:58:10,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 03:58:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 03:58:12,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-03 03:58:12,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 03:58:15,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 03:58:15,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 03:58:20,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 03:58:20,042 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 03:58:20,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739690716] [2024-11-03 03:58:20,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [739690716] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 03:58:20,042 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 03:58:20,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 13 [2024-11-03 03:58:20,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182796794] [2024-11-03 03:58:20,043 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 03:58:20,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-03 03:58:20,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 03:58:20,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-03 03:58:20,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-03 03:58:20,048 INFO L87 Difference]: Start difference. First operand 124 states and 163 transitions. Second operand has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 03:58:25,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-03 03:58:30,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-03 03:58:34,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-03 03:58:38,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-03 03:58:42,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-03 03:58:46,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-03 03:58:50,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-03 03:58:54,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-03 03:58:59,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-03 03:59:08,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 03:59:08,035 INFO L93 Difference]: Finished difference Result 150 states and 196 transitions. [2024-11-03 03:59:08,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-03 03:59:08,038 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-11-03 03:59:08,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 03:59:08,040 INFO L225 Difference]: With dead ends: 150 [2024-11-03 03:59:08,040 INFO L226 Difference]: Without dead ends: 138 [2024-11-03 03:59:08,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-03 03:59:08,045 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 262 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 8 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.1s IncrementalHoareTripleChecker+Time [2024-11-03 03:59:08,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1021 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 139 Invalid, 9 Unknown, 0 Unchecked, 47.1s Time] [2024-11-03 03:59:08,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-03 03:59:08,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 125. [2024-11-03 03:59:08,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 112 states have (on average 1.3392857142857142) internal successors, (150), 112 states have internal predecessors, (150), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-03 03:59:08,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 164 transitions. [2024-11-03 03:59:08,101 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 164 transitions. Word has length 17 [2024-11-03 03:59:08,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 03:59:08,102 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 164 transitions. [2024-11-03 03:59:08,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 03:59:08,102 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 164 transitions. [2024-11-03 03:59:08,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-03 03:59:08,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 03:59:08,102 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 03:59:08,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-03 03:59:08,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 03:59:08,303 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 03:59:08,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 03:59:08,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1685630519, now seen corresponding path program 1 times [2024-11-03 03:59:08,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 03:59:08,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617245025] [2024-11-03 03:59:08,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 03:59:08,304 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 03:59:08,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 03:59:08,308 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 03:59:08,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 03:59:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 03:59:09,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 03:59:09,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 03:59:10,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 03:59:10,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 03:59:13,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 03:59:13,065 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 03:59:13,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617245025] [2024-11-03 03:59:13,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1617245025] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 03:59:13,065 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 03:59:13,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2024-11-03 03:59:13,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945572523] [2024-11-03 03:59:13,065 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 03:59:13,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 03:59:13,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 03:59:13,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 03:59:13,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 03:59:13,066 INFO L87 Difference]: Start difference. First operand 125 states and 164 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 03:59:13,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 03:59:13,733 INFO L93 Difference]: Finished difference Result 136 states and 176 transitions. [2024-11-03 03:59:13,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 03:59:13,734 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-03 03:59:13,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 03:59:13,737 INFO L225 Difference]: With dead ends: 136 [2024-11-03 03:59:13,737 INFO L226 Difference]: Without dead ends: 116 [2024-11-03 03:59:13,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 03:59:13,738 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 29 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-03 03:59:13,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 623 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-03 03:59:13,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-03 03:59:13,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-11-03 03:59:13,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 104 states have (on average 1.3269230769230769) internal successors, (138), 104 states have internal predecessors, (138), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-03 03:59:13,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 150 transitions. [2024-11-03 03:59:13,757 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 150 transitions. Word has length 17 [2024-11-03 03:59:13,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 03:59:13,757 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 150 transitions. [2024-11-03 03:59:13,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 03:59:13,757 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 150 transitions. [2024-11-03 03:59:13,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-03 03:59:13,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 03:59:13,759 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 03:59:13,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-03 03:59:13,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 03:59:13,967 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 03:59:13,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 03:59:13,967 INFO L85 PathProgramCache]: Analyzing trace with hash 2065806908, now seen corresponding path program 1 times [2024-11-03 03:59:13,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 03:59:13,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200502051] [2024-11-03 03:59:13,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 03:59:13,967 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 03:59:13,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 03:59:13,971 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 03:59:13,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 03:59:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 03:59:15,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 03:59:15,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 03:59:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 03:59:15,690 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 03:59:20,055 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 03:59:20,055 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 03:59:20,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200502051] [2024-11-03 03:59:20,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1200502051] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 03:59:20,056 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 03:59:20,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 03:59:20,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809941289] [2024-11-03 03:59:20,056 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 03:59:20,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 03:59:20,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 03:59:20,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 03:59:20,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 03:59:20,057 INFO L87 Difference]: Start difference. First operand 116 states and 150 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-03 03:59:20,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 03:59:20,366 INFO L93 Difference]: Finished difference Result 230 states and 301 transitions. [2024-11-03 03:59:20,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 03:59:20,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 62 [2024-11-03 03:59:20,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 03:59:20,368 INFO L225 Difference]: With dead ends: 230 [2024-11-03 03:59:20,368 INFO L226 Difference]: Without dead ends: 123 [2024-11-03 03:59:20,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 03:59:20,369 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 2 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 03:59:20,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 297 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 03:59:20,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-03 03:59:20,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-11-03 03:59:20,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 110 states have (on average 1.3181818181818181) internal successors, (145), 110 states have internal predecessors, (145), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-03 03:59:20,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 159 transitions. [2024-11-03 03:59:20,388 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 159 transitions. Word has length 62 [2024-11-03 03:59:20,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 03:59:20,389 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 159 transitions. [2024-11-03 03:59:20,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-03 03:59:20,389 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 159 transitions. [2024-11-03 03:59:20,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-03 03:59:20,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 03:59:20,392 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 03:59:20,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-03 03:59:20,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 03:59:20,593 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 03:59:20,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 03:59:20,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2104792588, now seen corresponding path program 1 times [2024-11-03 03:59:20,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 03:59:20,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031367508] [2024-11-03 03:59:20,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 03:59:20,594 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 03:59:20,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 03:59:20,595 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 03:59:20,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-03 03:59:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 03:59:21,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 03:59:21,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 03:59:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 03:59:23,576 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 03:59:31,169 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-03 03:59:31,169 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 03:59:31,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031367508] [2024-11-03 03:59:31,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2031367508] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 03:59:31,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 03:59:31,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-11-03 03:59:31,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359562447] [2024-11-03 03:59:31,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 03:59:31,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 03:59:31,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 03:59:31,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 03:59:31,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-03 03:59:31,176 INFO L87 Difference]: Start difference. First operand 123 states and 159 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 03:59:32,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 03:59:32,572 INFO L93 Difference]: Finished difference Result 248 states and 325 transitions. [2024-11-03 03:59:32,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 03:59:32,573 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 4 states have call successors, (7) Word has length 64 [2024-11-03 03:59:32,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 03:59:32,575 INFO L225 Difference]: With dead ends: 248 [2024-11-03 03:59:32,575 INFO L226 Difference]: Without dead ends: 131 [2024-11-03 03:59:32,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-03 03:59:32,576 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 28 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-03 03:59:32,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 695 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-03 03:59:32,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-03 03:59:32,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 124. [2024-11-03 03:59:32,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 111 states have (on average 1.3153153153153154) internal successors, (146), 111 states have internal predecessors, (146), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-03 03:59:32,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 160 transitions. [2024-11-03 03:59:32,596 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 160 transitions. Word has length 64 [2024-11-03 03:59:32,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 03:59:32,596 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 160 transitions. [2024-11-03 03:59:32,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-03 03:59:32,596 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 160 transitions. [2024-11-03 03:59:32,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-03 03:59:32,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 03:59:32,601 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-03 03:59:32,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-03 03:59:32,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 03:59:32,802 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 03:59:32,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 03:59:32,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2000913292, now seen corresponding path program 1 times [2024-11-03 03:59:32,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 03:59:32,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782804640] [2024-11-03 03:59:32,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 03:59:32,803 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 03:59:32,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 03:59:32,804 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 03:59:32,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-03 03:59:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 03:59:34,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-03 03:59:34,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 03:59:43,904 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-03 03:59:43,904 INFO L311 TraceCheckSpWp]: Computing backward predicates...