/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_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 14:20:48,178 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 14:20:48,215 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 14:20:48,218 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 14:20:48,218 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 14:20:48,232 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 14:20:48,232 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 14:20:48,233 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 14:20:48,233 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 14:20:48,233 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 14:20:48,234 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 14:20:48,234 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 14:20:48,234 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 14:20:48,234 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 14:20:48,235 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 14:20:48,235 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 14:20:48,235 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 14:20:48,235 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 14:20:48,236 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 14:20:48,236 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 14:20:48,236 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 14:20:48,240 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 14:20:48,241 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 14:20:48,241 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 14:20:48,241 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 14:20:48,241 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 14:20:48,241 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 14:20:48,242 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 14:20:48,242 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 14:20:48,242 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 14:20:48,242 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 14:20:48,242 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 14:20:48,242 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 14:20:48,243 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 14:20:48,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 14:20:48,243 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 14:20:48,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 14:20:48,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 14:20:48,243 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 14:20:48,244 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 14:20:48,244 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 14:20:48,252 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 14:20:48,252 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 14:20:48,252 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 14:20:48,253 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 14:20:48,253 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 14:20:48,253 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 14:20:48,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 14:20:48,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 14:20:48,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 14:20:48,439 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 14:20:48,440 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 14:20:48,441 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-1.i [2023-12-24 14:20:49,497 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 14:20:49,620 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 14:20:49,620 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-1.i [2023-12-24 14:20:49,626 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c47bca12/7e28b62c4a174410ba685c64fc119acc/FLAGc196e994a [2023-12-24 14:20:49,635 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c47bca12/7e28b62c4a174410ba685c64fc119acc [2023-12-24 14:20:49,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 14:20:49,638 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 14:20:49,639 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 14:20:49,639 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 14:20:49,642 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 14:20:49,642 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 02:20:49" (1/1) ... [2023-12-24 14:20:49,643 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5efd5802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:49, skipping insertion in model container [2023-12-24 14:20:49,643 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 02:20:49" (1/1) ... [2023-12-24 14:20:49,665 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 14:20:49,775 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-1.i[916,929] [2023-12-24 14:20:49,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 14:20:49,825 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 14:20:49,833 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-1.i[916,929] [2023-12-24 14:20:49,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 14:20:49,898 INFO L206 MainTranslator]: Completed translation [2023-12-24 14:20:49,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:49 WrapperNode [2023-12-24 14:20:49,899 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 14:20:49,899 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 14:20:49,899 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 14:20:49,900 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 14:20:49,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:49" (1/1) ... [2023-12-24 14:20:49,914 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:49" (1/1) ... [2023-12-24 14:20:49,941 INFO L138 Inliner]: procedures = 36, calls = 158, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 490 [2023-12-24 14:20:49,942 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 14:20:49,942 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 14:20:49,942 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 14:20:49,942 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 14:20:49,955 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:49" (1/1) ... [2023-12-24 14:20:49,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:49" (1/1) ... [2023-12-24 14:20:49,960 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:49" (1/1) ... [2023-12-24 14:20:49,982 INFO L175 MemorySlicer]: Split 127 memory accesses to 7 slices as follows [2, 14, 39, 34, 21, 11, 6]. 31 percent of accesses are in the largest equivalence class. The 15 initializations are split as follows [2, 2, 4, 4, 1, 1, 1]. The 17 writes are split as follows [0, 2, 6, 5, 1, 1, 2]. [2023-12-24 14:20:49,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:49" (1/1) ... [2023-12-24 14:20:49,982 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:49" (1/1) ... [2023-12-24 14:20:50,001 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:49" (1/1) ... [2023-12-24 14:20:50,004 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:49" (1/1) ... [2023-12-24 14:20:50,007 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:49" (1/1) ... [2023-12-24 14:20:50,010 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:49" (1/1) ... [2023-12-24 14:20:50,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 14:20:50,016 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 14:20:50,016 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 14:20:50,016 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 14:20:50,017 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:49" (1/1) ... [2023-12-24 14:20:50,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 14:20:50,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 14:20:50,053 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) [2023-12-24 14:20:50,060 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 [2023-12-24 14:20:50,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 14:20:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 14:20:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 14:20:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 14:20:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 14:20:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 14:20:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 14:20:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-24 14:20:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 14:20:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 14:20:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 14:20:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 14:20:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 14:20:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-24 14:20:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#6 [2023-12-24 14:20:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 14:20:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 14:20:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 14:20:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 14:20:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 14:20:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 14:20:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-24 14:20:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 14:20:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 14:20:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-24 14:20:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-24 14:20:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-24 14:20:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-24 14:20:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2023-12-24 14:20:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 14:20:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 14:20:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2023-12-24 14:20:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2023-12-24 14:20:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2023-12-24 14:20:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#5 [2023-12-24 14:20:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#6 [2023-12-24 14:20:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 14:20:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 14:20:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 14:20:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 14:20:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-24 14:20:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-24 14:20:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-12-24 14:20:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 14:20:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 14:20:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 14:20:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 14:20:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 14:20:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-24 14:20:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#6 [2023-12-24 14:20:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 14:20:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 14:20:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2023-12-24 14:20:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2023-12-24 14:20:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2023-12-24 14:20:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#5 [2023-12-24 14:20:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#6 [2023-12-24 14:20:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 14:20:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 14:20:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2023-12-24 14:20:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2023-12-24 14:20:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2023-12-24 14:20:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#5 [2023-12-24 14:20:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#6 [2023-12-24 14:20:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 14:20:50,088 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 14:20:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 14:20:50,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 14:20:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 14:20:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 14:20:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 14:20:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 14:20:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 14:20:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 14:20:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-24 14:20:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 14:20:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 14:20:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 14:20:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 14:20:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 14:20:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-24 14:20:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#6 [2023-12-24 14:20:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 14:20:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 14:20:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 14:20:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 14:20:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-24 14:20:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-24 14:20:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-12-24 14:20:50,272 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 14:20:50,274 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 14:20:50,822 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 14:20:50,854 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 14:20:50,854 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 14:20:50,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 02:20:50 BoogieIcfgContainer [2023-12-24 14:20:50,855 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 14:20:50,856 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 14:20:50,857 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 14:20:50,859 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 14:20:50,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 02:20:49" (1/3) ... [2023-12-24 14:20:50,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680dc348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 02:20:50, skipping insertion in model container [2023-12-24 14:20:50,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:20:49" (2/3) ... [2023-12-24 14:20:50,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680dc348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 02:20:50, skipping insertion in model container [2023-12-24 14:20:50,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 02:20:50" (3/3) ... [2023-12-24 14:20:50,861 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-1.i [2023-12-24 14:20:50,873 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 14:20:50,873 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 14:20:50,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 14:20:50,909 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;@5160a01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 14:20:50,909 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 14:20:50,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 78 states have (on average 1.4743589743589745) internal successors, (115), 79 states have internal predecessors, (115), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-24 14:20:50,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 14:20:50,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:20:50,922 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:20:50,922 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:20:50,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:20:50,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1381919399, now seen corresponding path program 1 times [2023-12-24 14:20:50,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:20:50,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369147876] [2023-12-24 14:20:50,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:20:50,939 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:20:50,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:20:50,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:20:50,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 14:20:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:20:51,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 14:20:51,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:20:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-12-24 14:20:51,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:20:51,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:20:51,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369147876] [2023-12-24 14:20:51,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369147876] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:20:51,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:20:51,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 14:20:51,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667839049] [2023-12-24 14:20:51,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:20:51,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 14:20:51,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:20:51,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 14:20:51,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 14:20:51,358 INFO L87 Difference]: Start difference. First operand has 95 states, 78 states have (on average 1.4743589743589745) internal successors, (115), 79 states have internal predecessors, (115), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-24 14:20:51,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:20:51,411 INFO L93 Difference]: Finished difference Result 187 states and 298 transitions. [2023-12-24 14:20:51,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 14:20:51,412 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 117 [2023-12-24 14:20:51,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:20:51,420 INFO L225 Difference]: With dead ends: 187 [2023-12-24 14:20:51,420 INFO L226 Difference]: Without dead ends: 93 [2023-12-24 14:20:51,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 14:20:51,428 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 14:20:51,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 133 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 14:20:51,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-24 14:20:51,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-12-24 14:20:51,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 77 states have (on average 1.4285714285714286) internal successors, (110), 77 states have internal predecessors, (110), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-24 14:20:51,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 138 transitions. [2023-12-24 14:20:51,470 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 138 transitions. Word has length 117 [2023-12-24 14:20:51,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:20:51,470 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 138 transitions. [2023-12-24 14:20:51,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-24 14:20:51,471 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 138 transitions. [2023-12-24 14:20:51,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 14:20:51,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:20:51,473 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:20:51,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-24 14:20:51,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:20:51,683 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:20:51,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:20:51,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1825763807, now seen corresponding path program 1 times [2023-12-24 14:20:51,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:20:51,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732017650] [2023-12-24 14:20:51,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:20:51,685 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:20:51,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:20:51,686 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:20:51,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 14:20:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:20:51,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 14:20:51,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:20:51,996 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-24 14:20:51,996 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:20:51,996 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:20:51,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732017650] [2023-12-24 14:20:51,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732017650] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:20:51,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:20:51,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 14:20:51,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673383809] [2023-12-24 14:20:51,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:20:51,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 14:20:51,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:20:51,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 14:20:51,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 14:20:51,999 INFO L87 Difference]: Start difference. First operand 93 states and 138 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-24 14:20:52,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:20:52,059 INFO L93 Difference]: Finished difference Result 191 states and 284 transitions. [2023-12-24 14:20:52,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:20:52,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 117 [2023-12-24 14:20:52,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:20:52,061 INFO L225 Difference]: With dead ends: 191 [2023-12-24 14:20:52,061 INFO L226 Difference]: Without dead ends: 99 [2023-12-24 14:20:52,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:20:52,062 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 10 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 14:20:52,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 388 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 14:20:52,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-12-24 14:20:52,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2023-12-24 14:20:52,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 79 states have (on average 1.4177215189873418) internal successors, (112), 79 states have internal predecessors, (112), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-24 14:20:52,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 140 transitions. [2023-12-24 14:20:52,071 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 140 transitions. Word has length 117 [2023-12-24 14:20:52,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:20:52,072 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 140 transitions. [2023-12-24 14:20:52,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-24 14:20:52,072 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 140 transitions. [2023-12-24 14:20:52,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 14:20:52,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:20:52,074 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:20:52,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 14:20:52,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:20:52,282 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:20:52,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:20:52,283 INFO L85 PathProgramCache]: Analyzing trace with hash -558160931, now seen corresponding path program 1 times [2023-12-24 14:20:52,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:20:52,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049993004] [2023-12-24 14:20:52,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:20:52,285 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:20:52,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:20:52,286 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:20:52,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 14:20:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:20:52,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 14:20:52,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:20:52,992 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 27 treesize of output 15 [2023-12-24 14:20:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 10 proven. 162 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-12-24 14:20:53,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:20:53,150 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 14:20:53,150 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:20:53,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049993004] [2023-12-24 14:20:53,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049993004] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:20:53,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:20:53,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-24 14:20:53,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876815582] [2023-12-24 14:20:53,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:20:53,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:20:53,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:20:53,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:20:53,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-24 14:20:53,152 INFO L87 Difference]: Start difference. First operand 95 states and 140 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 14:20:53,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:20:53,252 INFO L93 Difference]: Finished difference Result 230 states and 340 transitions. [2023-12-24 14:20:53,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:20:53,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 117 [2023-12-24 14:20:53,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:20:53,254 INFO L225 Difference]: With dead ends: 230 [2023-12-24 14:20:53,254 INFO L226 Difference]: Without dead ends: 136 [2023-12-24 14:20:53,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-24 14:20:53,256 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 118 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 14:20:53,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 478 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 14:20:53,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-24 14:20:53,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 97. [2023-12-24 14:20:53,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 81 states have (on average 1.4074074074074074) internal successors, (114), 81 states have internal predecessors, (114), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-24 14:20:53,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 142 transitions. [2023-12-24 14:20:53,263 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 142 transitions. Word has length 117 [2023-12-24 14:20:53,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:20:53,263 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 142 transitions. [2023-12-24 14:20:53,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 14:20:53,263 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 142 transitions. [2023-12-24 14:20:53,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 14:20:53,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:20:53,288 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:20:53,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 14:20:53,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:20:53,489 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:20:53,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:20:53,489 INFO L85 PathProgramCache]: Analyzing trace with hash -135459105, now seen corresponding path program 1 times [2023-12-24 14:20:53,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:20:53,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869180520] [2023-12-24 14:20:53,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:20:53,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:20:53,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:20:53,491 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:20:53,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 14:20:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:20:53,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 14:20:53,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:20:53,746 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 14:20:53,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:20:53,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:20:53,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869180520] [2023-12-24 14:20:53,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869180520] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:20:53,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:20:53,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 14:20:53,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715984292] [2023-12-24 14:20:53,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:20:53,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:20:53,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:20:53,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:20:53,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:20:53,748 INFO L87 Difference]: Start difference. First operand 97 states and 142 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 14:20:53,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:20:53,811 INFO L93 Difference]: Finished difference Result 208 states and 304 transitions. [2023-12-24 14:20:53,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 14:20:53,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 117 [2023-12-24 14:20:53,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:20:53,812 INFO L225 Difference]: With dead ends: 208 [2023-12-24 14:20:53,812 INFO L226 Difference]: Without dead ends: 112 [2023-12-24 14:20:53,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 14:20:53,814 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 28 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 14:20:53,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 510 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 14:20:53,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-24 14:20:53,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 101. [2023-12-24 14:20:53,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 85 states have (on average 1.388235294117647) internal successors, (118), 85 states have internal predecessors, (118), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-24 14:20:53,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 146 transitions. [2023-12-24 14:20:53,820 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 146 transitions. Word has length 117 [2023-12-24 14:20:53,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:20:53,821 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 146 transitions. [2023-12-24 14:20:53,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 14:20:53,821 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 146 transitions. [2023-12-24 14:20:53,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 14:20:53,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:20:53,822 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:20:53,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 14:20:54,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:20:54,032 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:20:54,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:20:54,032 INFO L85 PathProgramCache]: Analyzing trace with hash -78200803, now seen corresponding path program 1 times [2023-12-24 14:20:54,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:20:54,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253185793] [2023-12-24 14:20:54,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:20:54,033 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:20:54,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:20:54,034 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:20:54,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 14:20:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:20:54,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 14:20:54,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:20:54,310 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 14:20:54,310 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:20:54,310 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:20:54,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253185793] [2023-12-24 14:20:54,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253185793] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:20:54,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:20:54,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 14:20:54,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104470843] [2023-12-24 14:20:54,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:20:54,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 14:20:54,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:20:54,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 14:20:54,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 14:20:54,313 INFO L87 Difference]: Start difference. First operand 101 states and 146 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 14:20:54,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:20:54,481 INFO L93 Difference]: Finished difference Result 213 states and 306 transitions. [2023-12-24 14:20:54,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 14:20:54,481 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 117 [2023-12-24 14:20:54,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:20:54,482 INFO L225 Difference]: With dead ends: 213 [2023-12-24 14:20:54,482 INFO L226 Difference]: Without dead ends: 113 [2023-12-24 14:20:54,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-24 14:20:54,483 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 22 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 14:20:54,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 632 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 14:20:54,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-24 14:20:54,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 103. [2023-12-24 14:20:54,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 87 states have (on average 1.3793103448275863) internal successors, (120), 87 states have internal predecessors, (120), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-24 14:20:54,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 148 transitions. [2023-12-24 14:20:54,489 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 148 transitions. Word has length 117 [2023-12-24 14:20:54,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:20:54,490 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 148 transitions. [2023-12-24 14:20:54,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 14:20:54,490 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 148 transitions. [2023-12-24 14:20:54,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 14:20:54,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:20:54,491 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:20:54,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 14:20:54,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:20:54,698 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:20:54,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:20:54,698 INFO L85 PathProgramCache]: Analyzing trace with hash -78141221, now seen corresponding path program 1 times [2023-12-24 14:20:54,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:20:54,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088290985] [2023-12-24 14:20:54,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:20:54,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:20:54,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:20:54,700 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:20:54,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 14:20:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:20:55,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 14:20:55,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:20:55,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:20:56,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-24 14:20:56,539 INFO L349 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2023-12-24 14:20:56,539 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 30 treesize of output 33 [2023-12-24 14:20:56,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 14:20:56,574 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 50 proven. 183 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2023-12-24 14:20:56,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:20:56,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:20:56,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088290985] [2023-12-24 14:20:56,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088290985] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:20:56,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [590173032] [2023-12-24 14:20:56,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:20:56,710 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:20:56,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:20:56,765 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:20:56,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-24 14:20:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:20:57,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 14:20:57,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:20:58,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:20:58,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-24 14:20:59,386 INFO L349 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2023-12-24 14:20:59,386 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 30 treesize of output 33 [2023-12-24 14:20:59,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 14:20:59,420 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 50 proven. 183 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2023-12-24 14:20:59,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:20:59,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [590173032] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:20:59,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:20:59,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-24 14:20:59,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422125262] [2023-12-24 14:20:59,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:20:59,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-24 14:20:59,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:20:59,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-24 14:20:59,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2023-12-24 14:20:59,472 INFO L87 Difference]: Start difference. First operand 103 states and 148 transitions. Second operand has 17 states, 15 states have (on average 6.733333333333333) internal successors, (101), 16 states have internal predecessors, (101), 8 states have call successors, (28), 6 states have call predecessors, (28), 8 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) [2023-12-24 14:21:00,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:21:00,056 INFO L93 Difference]: Finished difference Result 245 states and 350 transitions. [2023-12-24 14:21:00,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 14:21:00,056 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.733333333333333) internal successors, (101), 16 states have internal predecessors, (101), 8 states have call successors, (28), 6 states have call predecessors, (28), 8 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) Word has length 117 [2023-12-24 14:21:00,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:21:00,057 INFO L225 Difference]: With dead ends: 245 [2023-12-24 14:21:00,057 INFO L226 Difference]: Without dead ends: 143 [2023-12-24 14:21:00,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 261 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2023-12-24 14:21:00,058 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 344 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 14:21:00,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 814 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 14:21:00,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-12-24 14:21:00,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 138. [2023-12-24 14:21:00,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 114 states have (on average 1.3596491228070176) internal successors, (155), 115 states have internal predecessors, (155), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-24 14:21:00,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 197 transitions. [2023-12-24 14:21:00,082 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 197 transitions. Word has length 117 [2023-12-24 14:21:00,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:21:00,082 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 197 transitions. [2023-12-24 14:21:00,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.733333333333333) internal successors, (101), 16 states have internal predecessors, (101), 8 states have call successors, (28), 6 states have call predecessors, (28), 8 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) [2023-12-24 14:21:00,083 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 197 transitions. [2023-12-24 14:21:00,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 14:21:00,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:00,085 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:21:00,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 14:21:00,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-12-24 14:21:00,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 14:21:00,486 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:00,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:00,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1666489123, now seen corresponding path program 1 times [2023-12-24 14:21:00,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:00,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560301074] [2023-12-24 14:21:00,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:00,487 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:00,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:00,488 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:00,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 14:21:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:00,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 14:21:00,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:01,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:21:01,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 14:21:03,156 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:03,156 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 139 treesize of output 67 [2023-12-24 14:21:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 20 proven. 192 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 14:21:03,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:21:04,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:04,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560301074] [2023-12-24 14:21:04,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560301074] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:21:04,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1647354460] [2023-12-24 14:21:04,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:04,433 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:21:04,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:21:04,434 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:21:04,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-24 14:21:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:05,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 14:21:05,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:06,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:21:06,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 14:21:08,396 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 0 case distinctions, treesize of input 139 treesize of output 67 [2023-12-24 14:21:08,462 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 20 proven. 192 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 14:21:08,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:21:09,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1647354460] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:21:09,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:21:09,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-24 14:21:09,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372702911] [2023-12-24 14:21:09,413 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:21:09,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-24 14:21:09,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:21:09,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-24 14:21:09,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2023-12-24 14:21:09,415 INFO L87 Difference]: Start difference. First operand 138 states and 197 transitions. Second operand has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 20 states have internal predecessors, (90), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2023-12-24 14:21:11,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:21:11,267 INFO L93 Difference]: Finished difference Result 338 states and 477 transitions. [2023-12-24 14:21:11,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 14:21:11,268 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 20 states have internal predecessors, (90), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) Word has length 117 [2023-12-24 14:21:11,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:21:11,270 INFO L225 Difference]: With dead ends: 338 [2023-12-24 14:21:11,271 INFO L226 Difference]: Without dead ends: 232 [2023-12-24 14:21:11,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 354 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=208, Invalid=914, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 14:21:11,272 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 296 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:21:11,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 1093 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 14:21:11,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-12-24 14:21:11,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 210. [2023-12-24 14:21:11,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 162 states have (on average 1.3024691358024691) internal successors, (211), 166 states have internal predecessors, (211), 41 states have call successors, (41), 6 states have call predecessors, (41), 6 states have return successors, (41), 37 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-24 14:21:11,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 293 transitions. [2023-12-24 14:21:11,294 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 293 transitions. Word has length 117 [2023-12-24 14:21:11,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:21:11,294 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 293 transitions. [2023-12-24 14:21:11,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 20 states have internal predecessors, (90), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2023-12-24 14:21:11,295 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 293 transitions. [2023-12-24 14:21:11,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 14:21:11,295 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:11,296 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:21:11,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-24 14:21:11,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-12-24 14:21:11,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 14:21:11,710 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:11,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:11,711 INFO L85 PathProgramCache]: Analyzing trace with hash -99731173, now seen corresponding path program 1 times [2023-12-24 14:21:11,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:11,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379352757] [2023-12-24 14:21:11,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:11,711 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:11,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:11,712 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:11,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 14:21:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:11,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 14:21:11,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:11,971 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 14:21:11,971 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:21:11,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:11,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379352757] [2023-12-24 14:21:11,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379352757] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:21:11,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:21:11,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 14:21:11,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731794073] [2023-12-24 14:21:11,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:21:11,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 14:21:11,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:21:11,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 14:21:11,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 14:21:11,973 INFO L87 Difference]: Start difference. First operand 210 states and 293 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-24 14:21:12,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:21:12,044 INFO L93 Difference]: Finished difference Result 393 states and 545 transitions. [2023-12-24 14:21:12,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:21:12,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 117 [2023-12-24 14:21:12,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:21:12,046 INFO L225 Difference]: With dead ends: 393 [2023-12-24 14:21:12,046 INFO L226 Difference]: Without dead ends: 218 [2023-12-24 14:21:12,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:21:12,047 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 7 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 14:21:12,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 393 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 14:21:12,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-12-24 14:21:12,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 210. [2023-12-24 14:21:12,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 162 states have (on average 1.2901234567901234) internal successors, (209), 166 states have internal predecessors, (209), 41 states have call successors, (41), 6 states have call predecessors, (41), 6 states have return successors, (41), 37 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-24 14:21:12,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 291 transitions. [2023-12-24 14:21:12,074 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 291 transitions. Word has length 117 [2023-12-24 14:21:12,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:21:12,074 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 291 transitions. [2023-12-24 14:21:12,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-24 14:21:12,074 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 291 transitions. [2023-12-24 14:21:12,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 14:21:12,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:12,075 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:21:12,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-24 14:21:12,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:12,286 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:12,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:12,286 INFO L85 PathProgramCache]: Analyzing trace with hash 482865096, now seen corresponding path program 1 times [2023-12-24 14:21:12,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:12,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693523476] [2023-12-24 14:21:12,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:12,287 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:12,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:12,288 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:12,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 14:21:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:12,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 14:21:12,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:12,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:21:13,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 14:21:13,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 14:21:14,616 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 60 [2023-12-24 14:21:14,903 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:14,903 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 155 treesize of output 71 [2023-12-24 14:21:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 32 proven. 192 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-24 14:21:28,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:21:35,221 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 14:21:35,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:35,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693523476] [2023-12-24 14:21:35,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693523476] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:21:35,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:21:35,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 21 [2023-12-24 14:21:35,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456829081] [2023-12-24 14:21:35,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:21:35,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 14:21:35,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:21:35,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 14:21:35,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=355, Unknown=3, NotChecked=0, Total=420 [2023-12-24 14:21:35,223 INFO L87 Difference]: Start difference. First operand 210 states and 291 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 14:22:05,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:22:05,315 INFO L93 Difference]: Finished difference Result 520 states and 714 transitions. [2023-12-24 14:22:05,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 14:22:05,317 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2023-12-24 14:22:05,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:22:05,319 INFO L225 Difference]: With dead ends: 520 [2023-12-24 14:22:05,319 INFO L226 Difference]: Without dead ends: 355 [2023-12-24 14:22:05,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 46.5s TimeCoverageRelationStatistics Valid=120, Invalid=744, Unknown=6, NotChecked=0, Total=870 [2023-12-24 14:22:05,320 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 324 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 19 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-24 14:22:05,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 915 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 228 Invalid, 2 Unknown, 0 Unchecked, 3.7s Time] [2023-12-24 14:22:05,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-12-24 14:22:05,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 274. [2023-12-24 14:22:05,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 220 states have (on average 1.3045454545454545) internal successors, (287), 225 states have internal predecessors, (287), 45 states have call successors, (45), 8 states have call predecessors, (45), 8 states have return successors, (45), 40 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-24 14:22:05,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 377 transitions. [2023-12-24 14:22:05,344 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 377 transitions. Word has length 118 [2023-12-24 14:22:05,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:22:05,344 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 377 transitions. [2023-12-24 14:22:05,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 14:22:05,344 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 377 transitions. [2023-12-24 14:22:05,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 14:22:05,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:22:05,346 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:22:05,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-24 14:22:05,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:22:05,554 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:22:05,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:22:05,554 INFO L85 PathProgramCache]: Analyzing trace with hash -103940918, now seen corresponding path program 1 times [2023-12-24 14:22:05,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:22:05,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872369413] [2023-12-24 14:22:05,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:22:05,555 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:22:05,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:22:05,556 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:22:05,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 14:22:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:22:05,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 14:22:05,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:22:08,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:22:11,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 14:22:12,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 14:22:18,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 14:22:19,507 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 70 treesize of output 34 [2023-12-24 14:22:19,751 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 32 proven. 192 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-24 14:22:19,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:22:20,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:22:20,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872369413] [2023-12-24 14:22:20,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872369413] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:22:20,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2061695513] [2023-12-24 14:22:20,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:22:20,560 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:22:20,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:22:20,562 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:22:20,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-24 14:22:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:22:21,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 14:22:21,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:22:25,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:22:28,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 14:22:29,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 14:22:37,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 14:22:38,453 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 70 treesize of output 34 [2023-12-24 14:22:38,642 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 32 proven. 192 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-24 14:22:38,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:22:39,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2061695513] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:22:39,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:22:39,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-24 14:22:39,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772768840] [2023-12-24 14:22:39,202 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:22:39,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-24 14:22:39,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:22:39,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-24 14:22:39,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2023-12-24 14:22:39,203 INFO L87 Difference]: Start difference. First operand 274 states and 377 transitions. Second operand has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 16 states have internal predecessors, (101), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2023-12-24 14:22:47,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:22:47,089 INFO L93 Difference]: Finished difference Result 810 states and 1116 transitions. [2023-12-24 14:22:47,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 14:22:47,090 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 16 states have internal predecessors, (101), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) Word has length 118 [2023-12-24 14:22:47,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:22:47,092 INFO L225 Difference]: With dead ends: 810 [2023-12-24 14:22:47,093 INFO L226 Difference]: Without dead ends: 585 [2023-12-24 14:22:47,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 264 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2023-12-24 14:22:47,094 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 406 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-24 14:22:47,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 996 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-24 14:22:47,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2023-12-24 14:22:47,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 478. [2023-12-24 14:22:47,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 381 states have (on average 1.3018372703412073) internal successors, (496), 391 states have internal predecessors, (496), 82 states have call successors, (82), 14 states have call predecessors, (82), 14 states have return successors, (82), 72 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-24 14:22:47,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 660 transitions. [2023-12-24 14:22:47,137 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 660 transitions. Word has length 118 [2023-12-24 14:22:47,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:22:47,137 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 660 transitions. [2023-12-24 14:22:47,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 16 states have internal predecessors, (101), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2023-12-24 14:22:47,138 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 660 transitions. [2023-12-24 14:22:47,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 14:22:47,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:22:47,139 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:22:47,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2023-12-24 14:22:47,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-24 14:22:47,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:22:47,547 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:22:47,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:22:47,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1251077825, now seen corresponding path program 1 times [2023-12-24 14:22:47,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:22:47,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407051786] [2023-12-24 14:22:47,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:22:47,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:22:47,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:22:47,549 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:22:47,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-24 14:22:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:22:47,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 14:22:47,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:22:50,695 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 10 proven. 162 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-12-24 14:22:50,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:22:51,184 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 14:22:51,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:22:51,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407051786] [2023-12-24 14:22:51,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407051786] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:22:51,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:22:51,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2023-12-24 14:22:51,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828817876] [2023-12-24 14:22:51,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:22:51,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:22:51,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:22:51,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:22:51,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-24 14:22:51,185 INFO L87 Difference]: Start difference. First operand 478 states and 660 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 14:22:51,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:22:51,750 INFO L93 Difference]: Finished difference Result 1176 states and 1625 transitions. [2023-12-24 14:22:51,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 14:22:51,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2023-12-24 14:22:51,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:22:51,754 INFO L225 Difference]: With dead ends: 1176 [2023-12-24 14:22:51,754 INFO L226 Difference]: Without dead ends: 779 [2023-12-24 14:22:51,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 14:22:51,755 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 177 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 14:22:51,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 425 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 14:22:51,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2023-12-24 14:22:51,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 509. [2023-12-24 14:22:51,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 412 states have (on average 1.3179611650485437) internal successors, (543), 422 states have internal predecessors, (543), 82 states have call successors, (82), 14 states have call predecessors, (82), 14 states have return successors, (82), 72 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-24 14:22:51,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 707 transitions. [2023-12-24 14:22:51,803 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 707 transitions. Word has length 118 [2023-12-24 14:22:51,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:22:51,803 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 707 transitions. [2023-12-24 14:22:51,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 14:22:51,804 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 707 transitions. [2023-12-24 14:22:51,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 14:22:51,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:22:51,805 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:22:51,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-24 14:22:52,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:22:52,012 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:22:52,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:22:52,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1837883839, now seen corresponding path program 1 times [2023-12-24 14:22:52,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:22:52,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869959529] [2023-12-24 14:22:52,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:22:52,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:22:52,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:22:52,029 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:22:52,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-24 14:22:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:22:52,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 14:22:52,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:22:57,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:23:00,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 14:23:11,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 63 [2023-12-24 14:23:12,439 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:23:12,439 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 139 treesize of output 67 [2023-12-24 14:23:12,821 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 20 proven. 192 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 14:23:12,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:23:18,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:23:18,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869959529] [2023-12-24 14:23:18,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869959529] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:23:18,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [273575997] [2023-12-24 14:23:18,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:23:18,057 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:23:18,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:23:18,058 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:23:18,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-24 14:23:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:23:19,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 14:23:19,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:23:25,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:23:29,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 14:23:41,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 63 [2023-12-24 14:23:43,096 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 0 case distinctions, treesize of input 139 treesize of output 67 [2023-12-24 14:23:43,392 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 20 proven. 192 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 14:23:43,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:23:48,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [273575997] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:23:48,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:23:48,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-12-24 14:23:48,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171139042] [2023-12-24 14:23:48,037 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:23:48,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-24 14:23:48,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:23:48,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-24 14:23:48,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=562, Unknown=1, NotChecked=0, Total=650 [2023-12-24 14:23:48,038 INFO L87 Difference]: Start difference. First operand 509 states and 707 transitions. Second operand has 23 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 22 states have internal predecessors, (100), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2023-12-24 14:24:01,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:24:01,254 INFO L93 Difference]: Finished difference Result 1436 states and 2006 transitions. [2023-12-24 14:24:01,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 14:24:01,255 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 22 states have internal predecessors, (100), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) Word has length 118 [2023-12-24 14:24:01,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:24:01,258 INFO L225 Difference]: With dead ends: 1436 [2023-12-24 14:24:01,258 INFO L226 Difference]: Without dead ends: 1008 [2023-12-24 14:24:01,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 257 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=175, Invalid=880, Unknown=1, NotChecked=0, Total=1056 [2023-12-24 14:24:01,260 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 782 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-12-24 14:24:01,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 1321 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2023-12-24 14:24:01,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-12-24 14:24:01,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 799. [2023-12-24 14:24:01,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 685 states have (on average 1.3562043795620438) internal successors, (929), 697 states have internal predecessors, (929), 96 states have call successors, (96), 17 states have call predecessors, (96), 17 states have return successors, (96), 84 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-24 14:24:01,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1121 transitions. [2023-12-24 14:24:01,312 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1121 transitions. Word has length 118 [2023-12-24 14:24:01,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:24:01,312 INFO L495 AbstractCegarLoop]: Abstraction has 799 states and 1121 transitions. [2023-12-24 14:24:01,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 22 states have internal predecessors, (100), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2023-12-24 14:24:01,312 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1121 transitions. [2023-12-24 14:24:01,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 14:24:01,313 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:24:01,313 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:24:01,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 14:24:01,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2023-12-24 14:24:01,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 14:24:01,723 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:24:01,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:24:01,724 INFO L85 PathProgramCache]: Analyzing trace with hash 701719814, now seen corresponding path program 1 times [2023-12-24 14:24:01,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:24:01,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616289004] [2023-12-24 14:24:01,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:24:01,724 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:24:01,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:24:01,726 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:24:01,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-24 14:24:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:24:02,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 14:24:02,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:24:03,980 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 8 treesize of output 1 [2023-12-24 14:24:05,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 14:24:07,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 14:24:11,143 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 70 treesize of output 34 [2023-12-24 14:24:11,382 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 32 proven. 192 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-24 14:24:11,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:24:12,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:24:12,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616289004] [2023-12-24 14:24:12,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616289004] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:24:12,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1174543365] [2023-12-24 14:24:12,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:24:12,325 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:24:12,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:24:12,326 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:24:12,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-12-24 14:24:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:24:13,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 14:24:13,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:24:15,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:24:18,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 14:24:19,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 14:24:24,788 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 70 treesize of output 34 [2023-12-24 14:24:24,952 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 32 proven. 192 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-24 14:24:24,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:24:25,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1174543365] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:24:25,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:24:25,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-24 14:24:25,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56106835] [2023-12-24 14:24:25,676 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:24:25,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-24 14:24:25,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:24:25,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-24 14:24:25,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-12-24 14:24:25,677 INFO L87 Difference]: Start difference. First operand 799 states and 1121 transitions. Second operand has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 14 states have internal predecessors, (92), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2023-12-24 14:24:32,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:24:32,572 INFO L93 Difference]: Finished difference Result 1518 states and 2125 transitions. [2023-12-24 14:24:32,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 14:24:32,573 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 14 states have internal predecessors, (92), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) Word has length 118 [2023-12-24 14:24:32,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:24:32,576 INFO L225 Difference]: With dead ends: 1518 [2023-12-24 14:24:32,576 INFO L226 Difference]: Without dead ends: 800 [2023-12-24 14:24:32,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 368 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2023-12-24 14:24:32,577 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 263 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-24 14:24:32,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 1087 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-24 14:24:32,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2023-12-24 14:24:32,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 785. [2023-12-24 14:24:32,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 671 states have (on average 1.3517138599105811) internal successors, (907), 683 states have internal predecessors, (907), 96 states have call successors, (96), 17 states have call predecessors, (96), 17 states have return successors, (96), 84 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-24 14:24:32,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1099 transitions. [2023-12-24 14:24:32,627 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1099 transitions. Word has length 118 [2023-12-24 14:24:32,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:24:32,627 INFO L495 AbstractCegarLoop]: Abstraction has 785 states and 1099 transitions. [2023-12-24 14:24:32,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 14 states have internal predecessors, (92), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2023-12-24 14:24:32,627 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1099 transitions. [2023-12-24 14:24:32,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 14:24:32,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:24:32,629 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:24:32,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2023-12-24 14:24:32,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-24 14:24:33,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:24:33,043 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:24:33,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:24:33,044 INFO L85 PathProgramCache]: Analyzing trace with hash -132441208, now seen corresponding path program 1 times [2023-12-24 14:24:33,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:24:33,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095958742] [2023-12-24 14:24:33,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:24:33,044 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:24:33,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:24:33,045 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:24:33,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-24 14:24:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:24:33,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 14:24:33,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:24:33,375 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-12-24 14:24:33,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:24:33,375 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:24:33,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095958742] [2023-12-24 14:24:33,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095958742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:24:33,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:24:33,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 14:24:33,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319682175] [2023-12-24 14:24:33,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:24:33,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 14:24:33,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:24:33,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 14:24:33,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 14:24:33,376 INFO L87 Difference]: Start difference. First operand 785 states and 1099 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-24 14:24:33,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:24:33,757 INFO L93 Difference]: Finished difference Result 1530 states and 2142 transitions. [2023-12-24 14:24:33,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:24:33,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2023-12-24 14:24:33,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:24:33,760 INFO L225 Difference]: With dead ends: 1530 [2023-12-24 14:24:33,760 INFO L226 Difference]: Without dead ends: 796 [2023-12-24 14:24:33,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:24:33,761 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 7 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:24:33,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 393 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 14:24:33,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2023-12-24 14:24:33,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 785. [2023-12-24 14:24:33,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 671 states have (on average 1.347242921013413) internal successors, (904), 683 states have internal predecessors, (904), 96 states have call successors, (96), 17 states have call predecessors, (96), 17 states have return successors, (96), 84 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-24 14:24:33,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1096 transitions. [2023-12-24 14:24:33,811 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1096 transitions. Word has length 118 [2023-12-24 14:24:33,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:24:33,811 INFO L495 AbstractCegarLoop]: Abstraction has 785 states and 1096 transitions. [2023-12-24 14:24:33,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-24 14:24:33,811 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1096 transitions. [2023-12-24 14:24:33,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-24 14:24:33,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:24:33,813 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:24:33,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-24 14:24:34,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:24:34,020 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:24:34,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:24:34,020 INFO L85 PathProgramCache]: Analyzing trace with hash -161650665, now seen corresponding path program 1 times [2023-12-24 14:24:34,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:24:34,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418378528] [2023-12-24 14:24:34,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:24:34,021 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:24:34,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:24:34,021 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:24:34,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-24 14:24:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:24:34,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 14:24:34,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:24:39,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:24:43,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 30 [2023-12-24 14:24:55,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 55 [2023-12-24 14:24:56,499 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:24:56,499 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 131 treesize of output 59 [2023-12-24 14:24:56,934 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 20 proven. 192 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 14:24:56,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:25:03,898 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:25:03,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418378528] [2023-12-24 14:25:03,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418378528] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:25:03,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [944770029] [2023-12-24 14:25:03,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:25:03,898 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:25:03,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:25:03,917 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:25:03,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2023-12-24 14:25:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:25:05,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-24 14:25:05,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:25:11,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:25:20,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 30 [2023-12-24 14:25:35,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 55 [2023-12-24 14:25:37,123 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 0 case distinctions, treesize of input 131 treesize of output 59 [2023-12-24 14:25:37,589 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 20 proven. 192 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 14:25:37,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:25:41,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [944770029] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:25:41,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:25:41,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 34 [2023-12-24 14:25:41,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001082256] [2023-12-24 14:25:41,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:25:41,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-24 14:25:41,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:25:41,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-24 14:25:41,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1358, Unknown=1, NotChecked=0, Total=1560 [2023-12-24 14:25:41,044 INFO L87 Difference]: Start difference. First operand 785 states and 1096 transitions. Second operand has 35 states, 33 states have (on average 3.090909090909091) internal successors, (102), 30 states have internal predecessors, (102), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2023-12-24 14:26:20,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 14:26:22,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:26:22,918 INFO L93 Difference]: Finished difference Result 2584 states and 3584 transitions. [2023-12-24 14:26:22,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-24 14:26:22,919 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 3.090909090909091) internal successors, (102), 30 states have internal predecessors, (102), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) Word has length 119 [2023-12-24 14:26:22,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:26:22,924 INFO L225 Difference]: With dead ends: 2584 [2023-12-24 14:26:22,924 INFO L226 Difference]: Without dead ends: 1880 [2023-12-24 14:26:22,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 243 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1182 ImplicationChecksByTransitivity, 40.6s TimeCoverageRelationStatistics Valid=653, Invalid=3636, Unknown=1, NotChecked=0, Total=4290 [2023-12-24 14:26:22,928 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 1474 mSDsluCounter, 2271 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 2390 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.7s IncrementalHoareTripleChecker+Time [2023-12-24 14:26:22,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 2390 Invalid, 2709 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [260 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 27.7s Time] [2023-12-24 14:26:22,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2023-12-24 14:26:23,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1375. [2023-12-24 14:26:23,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 1183 states have (on average 1.3516483516483517) internal successors, (1599), 1206 states have internal predecessors, (1599), 160 states have call successors, (160), 31 states have call predecessors, (160), 31 states have return successors, (160), 137 states have call predecessors, (160), 160 states have call successors, (160) [2023-12-24 14:26:23,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 1919 transitions. [2023-12-24 14:26:23,039 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 1919 transitions. Word has length 119 [2023-12-24 14:26:23,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:26:23,039 INFO L495 AbstractCegarLoop]: Abstraction has 1375 states and 1919 transitions. [2023-12-24 14:26:23,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 3.090909090909091) internal successors, (102), 30 states have internal predecessors, (102), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2023-12-24 14:26:23,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 1919 transitions. [2023-12-24 14:26:23,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-24 14:26:23,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:26:23,042 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:26:23,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2023-12-24 14:26:23,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-24 14:26:23,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:26:23,448 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:26:23,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:26:23,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1812567696, now seen corresponding path program 1 times [2023-12-24 14:26:23,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:26:23,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481768238] [2023-12-24 14:26:23,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:26:23,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:26:23,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:26:23,450 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:26:23,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-24 14:26:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:26:23,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 14:26:23,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:26:26,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:26:28,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 14:26:30,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 14:26:35,126 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 59 [2023-12-24 14:26:36,230 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:26:36,230 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 176 treesize of output 80 [2023-12-24 14:26:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-24 14:26:36,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:26:38,566 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:26:38,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481768238] [2023-12-24 14:26:38,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481768238] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:26:38,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1477066407] [2023-12-24 14:26:38,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:26:38,567 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:26:38,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:26:38,568 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:26:38,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2023-12-24 14:26:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:26:39,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 14:26:39,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:26:43,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:26:46,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 14:26:47,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 14:26:54,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 59 [2023-12-24 14:26:56,193 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 0 case distinctions, treesize of input 176 treesize of output 80 [2023-12-24 14:26:56,297 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-24 14:26:56,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:26:57,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1477066407] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:26:57,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:26:57,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2023-12-24 14:26:57,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968214736] [2023-12-24 14:26:57,534 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:26:57,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-24 14:26:57,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:26:57,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-24 14:26:57,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2023-12-24 14:26:57,535 INFO L87 Difference]: Start difference. First operand 1375 states and 1919 transitions. Second operand has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 18 states have internal predecessors, (104), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2023-12-24 14:27:09,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:27:09,678 INFO L93 Difference]: Finished difference Result 2940 states and 4084 transitions. [2023-12-24 14:27:09,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 14:27:09,680 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 18 states have internal predecessors, (104), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) Word has length 119 [2023-12-24 14:27:09,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:27:09,690 INFO L225 Difference]: With dead ends: 2940 [2023-12-24 14:27:09,690 INFO L226 Difference]: Without dead ends: 1678 [2023-12-24 14:27:09,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 262 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=224, Invalid=898, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 14:27:09,701 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 588 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-24 14:27:09,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 1664 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-12-24 14:27:09,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2023-12-24 14:27:09,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1261. [2023-12-24 14:27:09,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 1081 states have (on average 1.3515263644773359) internal successors, (1461), 1101 states have internal predecessors, (1461), 148 states have call successors, (148), 31 states have call predecessors, (148), 31 states have return successors, (148), 128 states have call predecessors, (148), 148 states have call successors, (148) [2023-12-24 14:27:09,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1757 transitions. [2023-12-24 14:27:09,787 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1757 transitions. Word has length 119 [2023-12-24 14:27:09,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:27:09,787 INFO L495 AbstractCegarLoop]: Abstraction has 1261 states and 1757 transitions. [2023-12-24 14:27:09,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 18 states have internal predecessors, (104), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2023-12-24 14:27:09,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1757 transitions. [2023-12-24 14:27:09,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-24 14:27:09,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:27:09,810 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:27:09,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2023-12-24 14:27:10,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-24 14:27:10,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:27:10,221 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:27:10,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:27:10,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1219488743, now seen corresponding path program 1 times [2023-12-24 14:27:10,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:27:10,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201671124] [2023-12-24 14:27:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:27:10,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:27:10,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:27:10,223 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:27:10,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-24 14:27:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:27:10,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 14:27:10,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:27:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-24 14:27:10,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:27:10,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:27:10,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201671124] [2023-12-24 14:27:10,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201671124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:27:10,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:27:10,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 14:27:10,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851601062] [2023-12-24 14:27:10,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:27:10,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 14:27:10,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:27:10,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 14:27:10,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 14:27:10,767 INFO L87 Difference]: Start difference. First operand 1261 states and 1757 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-24 14:27:12,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:27:12,304 INFO L93 Difference]: Finished difference Result 2200 states and 3038 transitions. [2023-12-24 14:27:12,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 14:27:12,305 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 119 [2023-12-24 14:27:12,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:27:12,308 INFO L225 Difference]: With dead ends: 2200 [2023-12-24 14:27:12,308 INFO L226 Difference]: Without dead ends: 1010 [2023-12-24 14:27:12,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 14:27:12,309 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 7 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:27:12,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 541 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 14:27:12,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-12-24 14:27:12,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 980. [2023-12-24 14:27:12,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 837 states have (on average 1.3428912783751494) internal successors, (1124), 852 states have internal predecessors, (1124), 116 states have call successors, (116), 26 states have call predecessors, (116), 26 states have return successors, (116), 101 states have call predecessors, (116), 116 states have call successors, (116) [2023-12-24 14:27:12,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1356 transitions. [2023-12-24 14:27:12,441 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1356 transitions. Word has length 119 [2023-12-24 14:27:12,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:27:12,441 INFO L495 AbstractCegarLoop]: Abstraction has 980 states and 1356 transitions. [2023-12-24 14:27:12,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-24 14:27:12,441 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1356 transitions. [2023-12-24 14:27:12,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-24 14:27:12,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:27:12,456 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:27:12,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-24 14:27:12,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:27:12,663 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:27:12,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:27:12,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1336365723, now seen corresponding path program 1 times [2023-12-24 14:27:12,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:27:12,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063313991] [2023-12-24 14:27:12,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:27:12,664 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:27:12,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:27:12,665 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:27:12,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-24 14:27:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:27:12,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 14:27:12,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:27:14,096 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 97 treesize of output 43 [2023-12-24 14:27:14,562 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 196 proven. 24 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 14:27:14,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:27:15,486 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 61 treesize of output 25 [2023-12-24 14:27:15,499 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 18 proven. 21 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-24 14:27:15,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:27:15,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063313991] [2023-12-24 14:27:15,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063313991] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 14:27:15,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:27:15,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-12-24 14:27:15,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350137365] [2023-12-24 14:27:15,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:27:15,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 14:27:15,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:27:15,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 14:27:15,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 14:27:15,500 INFO L87 Difference]: Start difference. First operand 980 states and 1356 transitions. Second operand has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 12 states have internal predecessors, (81), 4 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) [2023-12-24 14:27:20,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:27:20,024 INFO L93 Difference]: Finished difference Result 1971 states and 2705 transitions. [2023-12-24 14:27:20,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 14:27:20,025 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 12 states have internal predecessors, (81), 4 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) Word has length 119 [2023-12-24 14:27:20,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:27:20,029 INFO L225 Difference]: With dead ends: 1971 [2023-12-24 14:27:20,029 INFO L226 Difference]: Without dead ends: 994 [2023-12-24 14:27:20,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2023-12-24 14:27:20,032 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 127 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-24 14:27:20,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 450 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-24 14:27:20,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2023-12-24 14:27:20,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 964. [2023-12-24 14:27:20,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 821 states have (on average 1.3300852618757613) internal successors, (1092), 836 states have internal predecessors, (1092), 116 states have call successors, (116), 26 states have call predecessors, (116), 26 states have return successors, (116), 101 states have call predecessors, (116), 116 states have call successors, (116) [2023-12-24 14:27:20,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1324 transitions. [2023-12-24 14:27:20,125 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1324 transitions. Word has length 119 [2023-12-24 14:27:20,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:27:20,125 INFO L495 AbstractCegarLoop]: Abstraction has 964 states and 1324 transitions. [2023-12-24 14:27:20,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 12 states have internal predecessors, (81), 4 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) [2023-12-24 14:27:20,126 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1324 transitions. [2023-12-24 14:27:20,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-24 14:27:20,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:27:20,128 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:27:20,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-24 14:27:20,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:27:20,338 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:27:20,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:27:20,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1224497123, now seen corresponding path program 1 times [2023-12-24 14:27:20,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:27:20,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196426394] [2023-12-24 14:27:20,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:27:20,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:27:20,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:27:20,340 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:27:20,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-24 14:27:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:27:20,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 14:27:20,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:27:38,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 54 [2023-12-24 14:27:39,157 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:27:39,157 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 58 [2023-12-24 14:27:39,552 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 7 proven. 213 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 14:27:39,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:27:46,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:27:46,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196426394] [2023-12-24 14:27:46,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196426394] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:27:46,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [540438848] [2023-12-24 14:27:46,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:27:46,438 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:27:46,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:27:46,439 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:27:46,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2023-12-24 14:27:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:27:47,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-24 14:27:47,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:27:54,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:27:58,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 14:28:15,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 55 [2023-12-24 14:28:17,229 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 0 case distinctions, treesize of input 131 treesize of output 59 [2023-12-24 14:28:17,944 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 27 proven. 213 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-24 14:28:17,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:28:21,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [540438848] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:28:21,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:28:21,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17] total 29 [2023-12-24 14:28:21,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670530550] [2023-12-24 14:28:21,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:28:21,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-24 14:28:21,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:28:21,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-24 14:28:21,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1030, Unknown=1, NotChecked=0, Total=1190 [2023-12-24 14:28:21,303 INFO L87 Difference]: Start difference. First operand 964 states and 1324 transitions. Second operand has 30 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 27 states have internal predecessors, (106), 7 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 5 states have call predecessors, (28), 7 states have call successors, (28) [2023-12-24 14:29:08,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:29:08,353 INFO L93 Difference]: Finished difference Result 2445 states and 3289 transitions. [2023-12-24 14:29:08,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-24 14:29:08,354 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 27 states have internal predecessors, (106), 7 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 5 states have call predecessors, (28), 7 states have call successors, (28) Word has length 119 [2023-12-24 14:29:08,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:29:08,372 INFO L225 Difference]: With dead ends: 2445 [2023-12-24 14:29:08,372 INFO L226 Difference]: Without dead ends: 1564 [2023-12-24 14:29:08,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 249 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1593 ImplicationChecksByTransitivity, 45.4s TimeCoverageRelationStatistics Valid=816, Invalid=4883, Unknown=1, NotChecked=0, Total=5700 [2023-12-24 14:29:08,390 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1275 mSDsluCounter, 2398 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 2126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2023-12-24 14:29:08,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 2602 Invalid, 2126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1907 Invalid, 0 Unknown, 0 Unchecked, 23.6s Time] [2023-12-24 14:29:08,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2023-12-24 14:29:08,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1093. [2023-12-24 14:29:08,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 931 states have (on average 1.3211600429645542) internal successors, (1230), 945 states have internal predecessors, (1230), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 110 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-24 14:29:08,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1478 transitions. [2023-12-24 14:29:08,475 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1478 transitions. Word has length 119 [2023-12-24 14:29:08,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:29:08,476 INFO L495 AbstractCegarLoop]: Abstraction has 1093 states and 1478 transitions. [2023-12-24 14:29:08,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 27 states have internal predecessors, (106), 7 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 5 states have call predecessors, (28), 7 states have call successors, (28) [2023-12-24 14:29:08,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1478 transitions. [2023-12-24 14:29:08,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-24 14:29:08,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:29:08,478 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:29:08,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-24 14:29:08,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2023-12-24 14:29:08,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 14:29:08,894 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:29:08,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:29:08,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1862435399, now seen corresponding path program 1 times [2023-12-24 14:29:08,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:29:08,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585113994] [2023-12-24 14:29:08,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:29:08,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:29:08,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:29:08,902 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:29:08,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-24 14:29:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:29:09,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 14:29:09,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:29:14,827 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 8 treesize of output 1 [2023-12-24 14:29:19,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 30 [2023-12-24 14:29:32,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 54 [2023-12-24 14:29:33,191 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:29:33,191 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 58 [2023-12-24 14:29:33,651 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 20 proven. 192 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 14:29:33,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:29:40,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:29:40,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585113994] [2023-12-24 14:29:40,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585113994] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:29:40,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1508871169] [2023-12-24 14:29:40,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:29:40,764 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:29:40,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:29:40,765 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:29:40,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2023-12-24 14:29:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:29:42,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-24 14:29:42,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:29:48,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:29:58,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 30 [2023-12-24 14:30:14,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 54 [2023-12-24 14:30:15,668 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 0 case distinctions, treesize of input 130 treesize of output 58 [2023-12-24 14:30:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 20 proven. 192 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 14:30:16,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:30:17,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1508871169] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:30:17,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:30:17,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 34 [2023-12-24 14:30:17,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709360604] [2023-12-24 14:30:17,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:30:17,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-24 14:30:17,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:30:17,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-24 14:30:17,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1358, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 14:30:17,640 INFO L87 Difference]: Start difference. First operand 1093 states and 1478 transitions. Second operand has 35 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 30 states have internal predecessors, (104), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2023-12-24 14:30:55,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 14:31:08,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:31:08,536 INFO L93 Difference]: Finished difference Result 2419 states and 3248 transitions. [2023-12-24 14:31:08,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-24 14:31:08,537 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 30 states have internal predecessors, (104), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) Word has length 120 [2023-12-24 14:31:08,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:31:08,541 INFO L225 Difference]: With dead ends: 2419 [2023-12-24 14:31:08,541 INFO L226 Difference]: Without dead ends: 1405 [2023-12-24 14:31:08,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 247 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1249 ImplicationChecksByTransitivity, 39.5s TimeCoverageRelationStatistics Valid=654, Invalid=3636, Unknown=0, NotChecked=0, Total=4290 [2023-12-24 14:31:08,543 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 744 mSDsluCounter, 4080 mSDsCounter, 0 mSdLazyCounter, 3111 mSolverCounterSat, 120 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 4318 SdHoareTripleChecker+Invalid, 3232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 3111 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.0s IncrementalHoareTripleChecker+Time [2023-12-24 14:31:08,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 4318 Invalid, 3232 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 3111 Invalid, 1 Unknown, 0 Unchecked, 37.0s Time] [2023-12-24 14:31:08,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2023-12-24 14:31:08,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 932. [2023-12-24 14:31:08,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 781 states have (on average 1.3034571062740077) internal successors, (1018), 792 states have internal predecessors, (1018), 114 states have call successors, (114), 36 states have call predecessors, (114), 36 states have return successors, (114), 103 states have call predecessors, (114), 114 states have call successors, (114) [2023-12-24 14:31:08,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1246 transitions. [2023-12-24 14:31:08,618 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1246 transitions. Word has length 120 [2023-12-24 14:31:08,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:31:08,618 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 1246 transitions. [2023-12-24 14:31:08,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 30 states have internal predecessors, (104), 6 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2023-12-24 14:31:08,619 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1246 transitions. [2023-12-24 14:31:08,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-24 14:31:08,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:31:08,620 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:31:08,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2023-12-24 14:31:08,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2023-12-24 14:31:09,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 14:31:09,036 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:31:09,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:31:09,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1883343867, now seen corresponding path program 1 times [2023-12-24 14:31:09,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:31:09,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971913956] [2023-12-24 14:31:09,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:31:09,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:31:09,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:31:09,038 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:31:09,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-24 14:31:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:31:09,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 14:31:09,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:31:15,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:31:18,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 14:31:29,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 54 [2023-12-24 14:31:31,189 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:31:31,190 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 58 [2023-12-24 14:31:31,625 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 27 proven. 213 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-24 14:31:31,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:31:36,242 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:31:36,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971913956] [2023-12-24 14:31:36,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971913956] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:31:36,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1407803619] [2023-12-24 14:31:36,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:31:36,243 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:31:36,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:31:36,244 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:31:36,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2023-12-24 14:31:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:31:37,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-24 14:31:37,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:31:44,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:31:48,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 14:32:06,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 54 [2023-12-24 14:32:07,647 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 0 case distinctions, treesize of input 130 treesize of output 58 [2023-12-24 14:32:08,015 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 27 proven. 213 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-24 14:32:08,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:32:11,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1407803619] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:32:11,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:32:11,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 31 [2023-12-24 14:32:11,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114300840] [2023-12-24 14:32:11,424 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:32:11,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-24 14:32:11,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:32:11,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-24 14:32:11,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1157, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 14:32:11,425 INFO L87 Difference]: Start difference. First operand 932 states and 1246 transitions. Second operand has 32 states, 30 states have (on average 3.6666666666666665) internal successors, (110), 29 states have internal predecessors, (110), 8 states have call successors, (28), 8 states have call predecessors, (28), 8 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) [2023-12-24 14:32:42,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.91s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 14:32:43,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:32:43,772 INFO L93 Difference]: Finished difference Result 2224 states and 2966 transitions. [2023-12-24 14:32:43,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 14:32:43,773 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 3.6666666666666665) internal successors, (110), 29 states have internal predecessors, (110), 8 states have call successors, (28), 8 states have call predecessors, (28), 8 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) Word has length 120 [2023-12-24 14:32:43,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:32:43,777 INFO L225 Difference]: With dead ends: 2224 [2023-12-24 14:32:43,777 INFO L226 Difference]: Without dead ends: 1371 [2023-12-24 14:32:43,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 250 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 31.9s TimeCoverageRelationStatistics Valid=530, Invalid=2776, Unknown=0, NotChecked=0, Total=3306 [2023-12-24 14:32:43,779 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 874 mSDsluCounter, 2489 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.9s IncrementalHoareTripleChecker+Time [2023-12-24 14:32:43,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 2668 Invalid, 2055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 21.9s Time] [2023-12-24 14:32:43,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2023-12-24 14:32:43,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 712. [2023-12-24 14:32:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 574 states have (on average 1.2613240418118468) internal successors, (724), 584 states have internal predecessors, (724), 102 states have call successors, (102), 35 states have call predecessors, (102), 35 states have return successors, (102), 92 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-24 14:32:43,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 928 transitions. [2023-12-24 14:32:43,848 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 928 transitions. Word has length 120 [2023-12-24 14:32:43,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:32:43,848 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 928 transitions. [2023-12-24 14:32:43,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 3.6666666666666665) internal successors, (110), 29 states have internal predecessors, (110), 8 states have call successors, (28), 8 states have call predecessors, (28), 8 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) [2023-12-24 14:32:43,849 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 928 transitions. [2023-12-24 14:32:43,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-24 14:32:43,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:32:43,850 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:32:43,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-24 14:32:44,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2023-12-24 14:32:44,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 14:32:44,264 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:32:44,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:32:44,265 INFO L85 PathProgramCache]: Analyzing trace with hash 801123846, now seen corresponding path program 1 times [2023-12-24 14:32:44,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:32:44,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942046557] [2023-12-24 14:32:44,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:32:44,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:32:44,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:32:44,266 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:32:44,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-24 14:32:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:32:44,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 14:32:44,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:32:44,829 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-24 14:32:44,829 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:32:44,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:32:44,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942046557] [2023-12-24 14:32:44,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942046557] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:32:44,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:32:44,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 14:32:44,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626358669] [2023-12-24 14:32:44,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:32:44,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 14:32:44,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:32:44,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 14:32:44,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 14:32:44,830 INFO L87 Difference]: Start difference. First operand 712 states and 928 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-24 14:32:46,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:32:46,247 INFO L93 Difference]: Finished difference Result 1397 states and 1820 transitions. [2023-12-24 14:32:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 14:32:46,248 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2023-12-24 14:32:46,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:32:46,250 INFO L225 Difference]: With dead ends: 1397 [2023-12-24 14:32:46,250 INFO L226 Difference]: Without dead ends: 738 [2023-12-24 14:32:46,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 14:32:46,251 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 7 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:32:46,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 523 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 14:32:46,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2023-12-24 14:32:46,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 712. [2023-12-24 14:32:46,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 574 states have (on average 1.2560975609756098) internal successors, (721), 584 states have internal predecessors, (721), 102 states have call successors, (102), 35 states have call predecessors, (102), 35 states have return successors, (102), 92 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-24 14:32:46,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 925 transitions. [2023-12-24 14:32:46,317 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 925 transitions. Word has length 120 [2023-12-24 14:32:46,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:32:46,317 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 925 transitions. [2023-12-24 14:32:46,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-24 14:32:46,318 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 925 transitions. [2023-12-24 14:32:46,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-24 14:32:46,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:32:46,319 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:32:46,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2023-12-24 14:32:46,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:32:46,525 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:32:46,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:32:46,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1553261436, now seen corresponding path program 1 times [2023-12-24 14:32:46,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:32:46,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745613246] [2023-12-24 14:32:46,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:32:46,526 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:32:46,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:32:46,527 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:32:46,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-24 14:32:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:32:46,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 14:32:46,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:32:48,660 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 8 treesize of output 1 [2023-12-24 14:32:50,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2023-12-24 14:32:51,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2023-12-24 14:32:54,103 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 45 treesize of output 21 [2023-12-24 14:32:54,284 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 29 proven. 195 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-24 14:32:54,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:32:55,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:32:55,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745613246] [2023-12-24 14:32:55,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745613246] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:32:55,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [247166656] [2023-12-24 14:32:55,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:32:55,178 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:32:55,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:32:55,179 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:32:55,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2023-12-24 14:32:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:32:56,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 14:32:56,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:32:58,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:33:01,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2023-12-24 14:33:02,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2023-12-24 14:33:06,594 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 45 treesize of output 21 [2023-12-24 14:33:06,749 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 29 proven. 195 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-24 14:33:06,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:33:07,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [247166656] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:33:07,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:33:07,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-24 14:33:07,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385234250] [2023-12-24 14:33:07,379 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:33:07,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-24 14:33:07,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:33:07,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-24 14:33:07,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-12-24 14:33:07,380 INFO L87 Difference]: Start difference. First operand 712 states and 925 transitions. Second operand has 17 states, 15 states have (on average 6.8) internal successors, (102), 16 states have internal predecessors, (102), 8 states have call successors, (28), 6 states have call predecessors, (28), 8 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) [2023-12-24 14:33:15,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:33:15,966 INFO L93 Difference]: Finished difference Result 1374 states and 1778 transitions. [2023-12-24 14:33:15,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 14:33:15,967 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.8) internal successors, (102), 16 states have internal predecessors, (102), 8 states have call successors, (28), 6 states have call predecessors, (28), 8 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) Word has length 120 [2023-12-24 14:33:15,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:33:15,969 INFO L225 Difference]: With dead ends: 1374 [2023-12-24 14:33:15,969 INFO L226 Difference]: Without dead ends: 749 [2023-12-24 14:33:15,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 369 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=154, Invalid=548, Unknown=0, NotChecked=0, Total=702 [2023-12-24 14:33:15,971 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 446 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 73 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-24 14:33:15,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1153 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 742 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2023-12-24 14:33:15,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2023-12-24 14:33:16,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 681. [2023-12-24 14:33:16,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 542 states have (on average 1.2361623616236161) internal successors, (670), 552 states have internal predecessors, (670), 102 states have call successors, (102), 36 states have call predecessors, (102), 36 states have return successors, (102), 92 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-24 14:33:16,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 874 transitions. [2023-12-24 14:33:16,065 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 874 transitions. Word has length 120 [2023-12-24 14:33:16,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:33:16,065 INFO L495 AbstractCegarLoop]: Abstraction has 681 states and 874 transitions. [2023-12-24 14:33:16,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.8) internal successors, (102), 16 states have internal predecessors, (102), 8 states have call successors, (28), 6 states have call predecessors, (28), 8 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) [2023-12-24 14:33:16,065 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 874 transitions. [2023-12-24 14:33:16,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-24 14:33:16,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:33:16,066 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:33:16,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-24 14:33:16,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2023-12-24 14:33:16,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 14:33:16,476 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:33:16,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:33:16,477 INFO L85 PathProgramCache]: Analyzing trace with hash -747600704, now seen corresponding path program 1 times [2023-12-24 14:33:16,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:33:16,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712904919] [2023-12-24 14:33:16,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:33:16,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:33:16,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:33:16,478 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:33:16,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-24 14:33:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:33:16,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 14:33:16,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:33:19,654 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 8 treesize of output 1 [2023-12-24 14:33:22,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2023-12-24 14:33:23,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2023-12-24 14:33:28,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2023-12-24 14:33:28,993 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 45 treesize of output 21 [2023-12-24 14:33:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 29 proven. 195 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-24 14:33:29,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:33:30,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:33:30,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712904919] [2023-12-24 14:33:30,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712904919] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:33:30,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1588778525] [2023-12-24 14:33:30,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:33:30,027 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:33:30,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:33:30,028 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:33:30,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2023-12-24 14:33:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:33:31,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 14:33:31,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:33:34,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:33:38,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2023-12-24 14:33:39,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2023-12-24 14:33:45,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2023-12-24 14:33:46,882 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 29 proven. 195 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-24 14:33:46,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:33:47,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1588778525] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:33:47,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:33:47,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-12-24 14:33:47,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629047441] [2023-12-24 14:33:47,391 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:33:47,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 14:33:47,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:33:47,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 14:33:47,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2023-12-24 14:33:47,392 INFO L87 Difference]: Start difference. First operand 681 states and 874 transitions. Second operand has 20 states, 18 states have (on average 6.222222222222222) internal successors, (112), 19 states have internal predecessors, (112), 8 states have call successors, (28), 6 states have call predecessors, (28), 8 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) [2023-12-24 14:33:56,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:33:56,763 INFO L93 Difference]: Finished difference Result 1379 states and 1770 transitions. [2023-12-24 14:33:56,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 14:33:56,764 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 6.222222222222222) internal successors, (112), 19 states have internal predecessors, (112), 8 states have call successors, (28), 6 states have call predecessors, (28), 8 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) Word has length 120 [2023-12-24 14:33:56,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:33:56,766 INFO L225 Difference]: With dead ends: 1379 [2023-12-24 14:33:56,766 INFO L226 Difference]: Without dead ends: 785 [2023-12-24 14:33:56,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 265 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2023-12-24 14:33:56,769 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 482 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 81 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:33:56,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 1315 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 773 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2023-12-24 14:33:56,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2023-12-24 14:33:56,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 595. [2023-12-24 14:33:56,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 466 states have (on average 1.2167381974248928) internal successors, (567), 473 states have internal predecessors, (567), 93 states have call successors, (93), 35 states have call predecessors, (93), 35 states have return successors, (93), 86 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-24 14:33:56,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 753 transitions. [2023-12-24 14:33:56,833 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 753 transitions. Word has length 120 [2023-12-24 14:33:56,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:33:56,833 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 753 transitions. [2023-12-24 14:33:56,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 6.222222222222222) internal successors, (112), 19 states have internal predecessors, (112), 8 states have call successors, (28), 6 states have call predecessors, (28), 8 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) [2023-12-24 14:33:56,834 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 753 transitions. [2023-12-24 14:33:56,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-24 14:33:56,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:33:56,835 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:33:56,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2023-12-24 14:33:57,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2023-12-24 14:33:57,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:33:57,249 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:33:57,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:33:57,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1334406718, now seen corresponding path program 1 times [2023-12-24 14:33:57,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:33:57,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239011325] [2023-12-24 14:33:57,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:33:57,250 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:33:57,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:33:57,251 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:33:57,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-24 14:33:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:33:57,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 14:33:57,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:34:00,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:34:03,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 30 [2023-12-24 14:34:04,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 30 [2023-12-24 14:34:09,924 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 57 [2023-12-24 14:34:11,288 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:34:11,288 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 128 treesize of output 56 [2023-12-24 14:34:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 1 proven. 227 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-24 14:34:12,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:34:14,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:34:14,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239011325] [2023-12-24 14:34:14,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239011325] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:34:14,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1837405312] [2023-12-24 14:34:14,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:34:14,886 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:34:14,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:34:14,887 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:34:14,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2023-12-24 14:34:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:34:16,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-24 14:34:16,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:34:19,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:34:25,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 30 [2023-12-24 14:34:26,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 30 [2023-12-24 14:34:34,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 57 [2023-12-24 14:34:36,315 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 0 case distinctions, treesize of input 128 treesize of output 56 [2023-12-24 14:34:36,740 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 1 proven. 227 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-24 14:34:36,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:34:37,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1837405312] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:34:37,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:34:37,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 28 [2023-12-24 14:34:37,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920821430] [2023-12-24 14:34:37,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:34:37,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-24 14:34:37,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:34:37,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-24 14:34:37,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1054, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 14:34:37,823 INFO L87 Difference]: Start difference. First operand 595 states and 753 transitions. Second operand has 29 states, 27 states have (on average 4.148148148148148) internal successors, (112), 26 states have internal predecessors, (112), 8 states have call successors, (28), 8 states have call predecessors, (28), 8 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) [2023-12-24 14:35:00,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:35:00,165 INFO L93 Difference]: Finished difference Result 1252 states and 1602 transitions. [2023-12-24 14:35:00,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-24 14:35:00,166 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 4.148148148148148) internal successors, (112), 26 states have internal predecessors, (112), 8 states have call successors, (28), 8 states have call predecessors, (28), 8 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) Word has length 120 [2023-12-24 14:35:00,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:35:00,168 INFO L225 Difference]: With dead ends: 1252 [2023-12-24 14:35:00,168 INFO L226 Difference]: Without dead ends: 744 [2023-12-24 14:35:00,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 252 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=498, Invalid=2582, Unknown=0, NotChecked=0, Total=3080 [2023-12-24 14:35:00,170 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 608 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2023-12-24 14:35:00,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 1948 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time] [2023-12-24 14:35:00,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2023-12-24 14:35:00,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 593. [2023-12-24 14:35:00,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 464 states have (on average 1.2176724137931034) internal successors, (565), 471 states have internal predecessors, (565), 93 states have call successors, (93), 35 states have call predecessors, (93), 35 states have return successors, (93), 86 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-24 14:35:00,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 751 transitions. [2023-12-24 14:35:00,234 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 751 transitions. Word has length 120 [2023-12-24 14:35:00,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:35:00,234 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 751 transitions. [2023-12-24 14:35:00,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 4.148148148148148) internal successors, (112), 26 states have internal predecessors, (112), 8 states have call successors, (28), 8 states have call predecessors, (28), 8 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) [2023-12-24 14:35:00,234 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 751 transitions. [2023-12-24 14:35:00,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-24 14:35:00,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:35:00,236 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:35:00,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-12-24 14:35:00,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (39)] Ended with exit code 0 [2023-12-24 14:35:00,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 14:35:00,643 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:35:00,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:35:00,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1471681526, now seen corresponding path program 1 times [2023-12-24 14:35:00,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:35:00,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344611331] [2023-12-24 14:35:00,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:35:00,644 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:35:00,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:35:00,645 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:35:00,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-24 14:35:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:35:00,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 14:35:00,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:35:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 10 proven. 162 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-12-24 14:35:03,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:35:04,403 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 14:35:04,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:35:04,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344611331] [2023-12-24 14:35:04,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344611331] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:35:04,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:35:04,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2023-12-24 14:35:04,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722785931] [2023-12-24 14:35:04,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:35:04,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:35:04,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:35:04,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:35:04,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-24 14:35:04,404 INFO L87 Difference]: Start difference. First operand 593 states and 751 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 14:35:05,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:35:05,067 INFO L93 Difference]: Finished difference Result 1264 states and 1620 transitions. [2023-12-24 14:35:05,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 14:35:05,068 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 121 [2023-12-24 14:35:05,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:35:05,070 INFO L225 Difference]: With dead ends: 1264 [2023-12-24 14:35:05,071 INFO L226 Difference]: Without dead ends: 758 [2023-12-24 14:35:05,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 14:35:05,072 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 107 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 14:35:05,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 479 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 14:35:05,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2023-12-24 14:35:05,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 626. [2023-12-24 14:35:05,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 497 states have (on average 1.2193158953722334) internal successors, (606), 504 states have internal predecessors, (606), 93 states have call successors, (93), 35 states have call predecessors, (93), 35 states have return successors, (93), 86 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-24 14:35:05,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 792 transitions. [2023-12-24 14:35:05,149 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 792 transitions. Word has length 121 [2023-12-24 14:35:05,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:35:05,149 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 792 transitions. [2023-12-24 14:35:05,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-24 14:35:05,149 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 792 transitions. [2023-12-24 14:35:05,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-24 14:35:05,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:35:05,152 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:35:05,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2023-12-24 14:35:05,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:35:05,359 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:35:05,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:35:05,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1213516088, now seen corresponding path program 1 times [2023-12-24 14:35:05,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:35:05,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978597657] [2023-12-24 14:35:05,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:35:05,360 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:35:05,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:35:05,362 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:35:05,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-24 14:35:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:35:05,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-24 14:35:05,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:35:17,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:35:22,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 Received shutdown request... [2023-12-24 14:35:29,843 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 14:35:29,843 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 [2023-12-24 14:35:30,058 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 14:35:30,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2023-12-24 14:35:30,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:35:30,259 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 122 with TraceHistMax 14,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-13-1 term,while PolyPacSimplificationTermWalker was simplifying 13 xjuncts wrt. a ATOM-1 context. [2023-12-24 14:35:30,262 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:35:30,264 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 14:35:30,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 02:35:30 BoogieIcfgContainer [2023-12-24 14:35:30,266 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 14:35:30,266 INFO L158 Benchmark]: Toolchain (without parser) took 880628.54ms. Allocated memory was 220.2MB in the beginning and 490.7MB in the end (delta: 270.5MB). Free memory was 154.6MB in the beginning and 272.2MB in the end (delta: -117.6MB). Peak memory consumption was 154.5MB. Max. memory is 8.0GB. [2023-12-24 14:35:30,267 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 220.2MB. Free memory is still 171.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 14:35:30,267 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.10ms. Allocated memory was 220.2MB in the beginning and 268.4MB in the end (delta: 48.2MB). Free memory was 154.3MB in the beginning and 235.5MB in the end (delta: -81.2MB). Peak memory consumption was 19.2MB. Max. memory is 8.0GB. [2023-12-24 14:35:30,267 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.50ms. Allocated memory is still 268.4MB. Free memory was 235.5MB in the beginning and 232.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 14:35:30,267 INFO L158 Benchmark]: Boogie Preprocessor took 73.34ms. Allocated memory is still 268.4MB. Free memory was 232.4MB in the beginning and 226.6MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-24 14:35:30,267 INFO L158 Benchmark]: RCFGBuilder took 838.69ms. Allocated memory is still 268.4MB. Free memory was 226.1MB in the beginning and 181.0MB in the end (delta: 45.1MB). Peak memory consumption was 45.1MB. Max. memory is 8.0GB. [2023-12-24 14:35:30,267 INFO L158 Benchmark]: TraceAbstraction took 879409.72ms. Allocated memory was 268.4MB in the beginning and 490.7MB in the end (delta: 222.3MB). Free memory was 180.5MB in the beginning and 272.2MB in the end (delta: -91.7MB). Peak memory consumption was 131.1MB. Max. memory is 8.0GB. [2023-12-24 14:35:30,268 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 220.2MB. Free memory is still 171.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 260.10ms. Allocated memory was 220.2MB in the beginning and 268.4MB in the end (delta: 48.2MB). Free memory was 154.3MB in the beginning and 235.5MB in the end (delta: -81.2MB). Peak memory consumption was 19.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 42.50ms. Allocated memory is still 268.4MB. Free memory was 235.5MB in the beginning and 232.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 73.34ms. Allocated memory is still 268.4MB. Free memory was 232.4MB in the beginning and 226.6MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 838.69ms. Allocated memory is still 268.4MB. Free memory was 226.1MB in the beginning and 181.0MB in the end (delta: 45.1MB). Peak memory consumption was 45.1MB. Max. memory is 8.0GB. * TraceAbstraction took 879409.72ms. Allocated memory was 268.4MB in the beginning and 490.7MB in the end (delta: 222.3MB). Free memory was 180.5MB in the beginning and 272.2MB in the end (delta: -91.7MB). Peak memory consumption was 131.1MB. 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: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 122 with TraceHistMax 14,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-13-1 term,while PolyPacSimplificationTermWalker was simplifying 13 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 95 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 879.4s, OverallIterations: 27, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 295.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 9645 SdHoareTripleChecker+Valid, 181.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9523 mSDsluCounter, 29629 SdHoareTripleChecker+Invalid, 175.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25856 mSDsCounter, 1559 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17797 IncrementalHoareTripleChecker+Invalid, 19361 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1559 mSolverCounterUnsat, 3773 mSDtfsCounter, 17797 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6346 GetRequests, 5673 SyntacticMatches, 33 SemanticMatches, 640 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7505 ImplicationChecksByTransitivity, 289.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1375occurred in iteration=15, InterpolantAutomatonStates: 374, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 26 MinimizatonAttempts, 3944 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.4s SsaConstructionTime, 15.9s SatisfiabilityAnalysisTime, 527.7s InterpolantComputationTime, 4625 NumberOfCodeBlocks, 4625 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 5174 ConstructedInterpolants, 25 QuantifiedInterpolants, 166131 SizeOfPredicates, 537 NumberOfNonLiveVariables, 11449 ConjunctsInSsa, 890 ConjunctsInUnsatCore, 44 InterpolantComputations, 12 PerfectInterpolantSequences, 10089/16016 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