/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-p_file-58.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 16:46:15,673 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 16:46:15,744 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 16:46:15,746 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 16:46:15,747 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 16:46:15,770 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 16:46:15,771 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 16:46:15,772 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 16:46:15,772 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 16:46:15,775 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 16:46:15,775 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 16:46:15,776 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 16:46:15,776 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 16:46:15,777 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 16:46:15,777 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 16:46:15,778 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 16:46:15,778 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 16:46:15,778 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 16:46:15,778 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 16:46:15,778 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 16:46:15,778 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 16:46:15,779 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 16:46:15,779 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 16:46:15,779 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 16:46:15,779 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 16:46:15,779 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 16:46:15,779 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 16:46:15,780 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 16:46:15,780 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 16:46:15,780 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 16:46:15,781 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 16:46:15,781 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 16:46:15,781 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 16:46:15,781 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 16:46:15,781 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:46:15,781 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 16:46:15,781 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 16:46:15,781 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 16:46:15,782 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 16:46:15,782 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 16:46:15,782 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 16:46:15,782 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 16:46:15,782 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 16:46:15,782 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 16:46:15,782 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 16:46:15,783 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 16:46:15,783 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 16:46:15,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 16:46:16,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 16:46:16,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 16:46:16,004 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 16:46:16,004 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 16:46:16,005 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-58.i [2023-12-24 16:46:17,015 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 16:46:17,185 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 16:46:17,186 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-58.i [2023-12-24 16:46:17,203 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/477bb442a/850a847f15e2411aaa32a74d4df9213c/FLAG1a6ac2fdb [2023-12-24 16:46:17,213 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/477bb442a/850a847f15e2411aaa32a74d4df9213c [2023-12-24 16:46:17,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 16:46:17,215 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 16:46:17,216 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 16:46:17,216 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 16:46:17,219 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 16:46:17,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:46:17" (1/1) ... [2023-12-24 16:46:17,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74647f91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:46:17, skipping insertion in model container [2023-12-24 16:46:17,221 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:46:17" (1/1) ... [2023-12-24 16:46:17,243 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 16:46:17,342 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-p_file-58.i[916,929] [2023-12-24 16:46:17,376 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:46:17,387 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 16:46:17,395 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-p_file-58.i[916,929] [2023-12-24 16:46:17,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:46:17,437 INFO L206 MainTranslator]: Completed translation [2023-12-24 16:46:17,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:46:17 WrapperNode [2023-12-24 16:46:17,438 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 16:46:17,439 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 16:46:17,439 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 16:46:17,439 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 16:46:17,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:46:17" (1/1) ... [2023-12-24 16:46:17,460 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:46:17" (1/1) ... [2023-12-24 16:46:17,487 INFO L138 Inliner]: procedures = 33, calls = 162, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 466 [2023-12-24 16:46:17,487 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 16:46:17,488 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 16:46:17,488 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 16:46:17,488 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 16:46:17,496 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:46:17" (1/1) ... [2023-12-24 16:46:17,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:46:17" (1/1) ... [2023-12-24 16:46:17,508 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:46:17" (1/1) ... [2023-12-24 16:46:17,527 INFO L175 MemorySlicer]: Split 125 memory accesses to 12 slices as follows [2, 7, 28, 16, 8, 12, 7, 11, 6, 19, 6, 3]. 22 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 15 writes are split as follows [0, 3, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1]. [2023-12-24 16:46:17,527 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:46:17" (1/1) ... [2023-12-24 16:46:17,527 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:46:17" (1/1) ... [2023-12-24 16:46:17,562 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:46:17" (1/1) ... [2023-12-24 16:46:17,565 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:46:17" (1/1) ... [2023-12-24 16:46:17,568 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:46:17" (1/1) ... [2023-12-24 16:46:17,570 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:46:17" (1/1) ... [2023-12-24 16:46:17,593 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 16:46:17,594 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 16:46:17,594 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 16:46:17,594 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 16:46:17,595 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:46:17" (1/1) ... [2023-12-24 16:46:17,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:46:17,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 16:46:17,649 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 16:46:17,656 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 16:46:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 16:46:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 16:46:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 16:46:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 16:46:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 16:46:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 16:46:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 16:46:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-24 16:46:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#7 [2023-12-24 16:46:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#8 [2023-12-24 16:46:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#9 [2023-12-24 16:46:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#10 [2023-12-24 16:46:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#11 [2023-12-24 16:46:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 16:46:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 16:46:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 16:46:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 16:46:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 16:46:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-24 16:46:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#6 [2023-12-24 16:46:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#7 [2023-12-24 16:46:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#8 [2023-12-24 16:46:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#9 [2023-12-24 16:46:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#10 [2023-12-24 16:46:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#11 [2023-12-24 16:46:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 16:46:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 16:46:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 16:46:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 16:46:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 16:46:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 16:46:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-24 16:46:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2023-12-24 16:46:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2023-12-24 16:46:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9 [2023-12-24 16:46:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#10 [2023-12-24 16:46:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#11 [2023-12-24 16:46:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 16:46:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 16:46:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-24 16:46:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-24 16:46:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-24 16:46:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-24 16:46:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2023-12-24 16:46:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#7 [2023-12-24 16:46:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#8 [2023-12-24 16:46:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#9 [2023-12-24 16:46:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#10 [2023-12-24 16:46:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#11 [2023-12-24 16:46:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 16:46:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 16:46:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 16:46:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 16:46:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-24 16:46:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-24 16:46:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-12-24 16:46:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2023-12-24 16:46:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#8 [2023-12-24 16:46:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#9 [2023-12-24 16:46:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#10 [2023-12-24 16:46:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#11 [2023-12-24 16:46:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 16:46:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 16:46:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 16:46:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 16:46:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 16:46:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-24 16:46:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#6 [2023-12-24 16:46:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#7 [2023-12-24 16:46:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#8 [2023-12-24 16:46:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#9 [2023-12-24 16:46:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#10 [2023-12-24 16:46:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#11 [2023-12-24 16:46:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 16:46:17,684 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 16:46:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 16:46:17,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 16:46:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 16:46:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 16:46:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 16:46:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 16:46:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 16:46:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 16:46:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-24 16:46:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#7 [2023-12-24 16:46:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#8 [2023-12-24 16:46:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#9 [2023-12-24 16:46:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#10 [2023-12-24 16:46:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#11 [2023-12-24 16:46:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 16:46:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 16:46:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 16:46:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 16:46:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 16:46:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-24 16:46:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#6 [2023-12-24 16:46:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#7 [2023-12-24 16:46:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#8 [2023-12-24 16:46:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#9 [2023-12-24 16:46:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#10 [2023-12-24 16:46:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#11 [2023-12-24 16:46:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 16:46:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 16:46:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 16:46:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 16:46:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-24 16:46:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-24 16:46:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-12-24 16:46:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#7 [2023-12-24 16:46:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#8 [2023-12-24 16:46:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#9 [2023-12-24 16:46:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#10 [2023-12-24 16:46:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#11 [2023-12-24 16:46:17,837 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 16:46:17,839 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 16:46:18,224 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 16:46:18,268 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 16:46:18,268 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 16:46:18,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:46:18 BoogieIcfgContainer [2023-12-24 16:46:18,269 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 16:46:18,271 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 16:46:18,271 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 16:46:18,273 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 16:46:18,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 04:46:17" (1/3) ... [2023-12-24 16:46:18,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200c5d08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:46:18, skipping insertion in model container [2023-12-24 16:46:18,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:46:17" (2/3) ... [2023-12-24 16:46:18,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200c5d08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:46:18, skipping insertion in model container [2023-12-24 16:46:18,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:46:18" (3/3) ... [2023-12-24 16:46:18,275 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-58.i [2023-12-24 16:46:18,287 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 16:46:18,288 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 16:46:18,328 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 16:46:18,332 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;@30881712, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 16:46:18,332 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 16:46:18,338 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 67 states have (on average 1.4328358208955223) internal successors, (96), 68 states have internal predecessors, (96), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 16:46:18,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 16:46:18,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:46:18,347 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:46:18,348 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:46:18,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:46:18,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1705673958, now seen corresponding path program 1 times [2023-12-24 16:46:18,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:46:18,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022405459] [2023-12-24 16:46:18,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:46:18,361 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 16:46:18,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:46:18,363 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 16:46:18,378 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 16:46:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:46:18,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 16:46:18,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:46:18,752 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-12-24 16:46:18,752 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:46:18,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:46:18,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022405459] [2023-12-24 16:46:18,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022405459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:46:18,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:46:18,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 16:46:18,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440736318] [2023-12-24 16:46:18,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:46:18,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 16:46:18,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:46:18,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 16:46:18,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 16:46:18,789 INFO L87 Difference]: Start difference. First operand has 85 states, 67 states have (on average 1.4328358208955223) internal successors, (96), 68 states have internal predecessors, (96), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 16:46:18,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:46:18,819 INFO L93 Difference]: Finished difference Result 163 states and 259 transitions. [2023-12-24 16:46:18,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 16:46:18,821 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 111 [2023-12-24 16:46:18,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:46:18,826 INFO L225 Difference]: With dead ends: 163 [2023-12-24 16:46:18,826 INFO L226 Difference]: Without dead ends: 79 [2023-12-24 16:46:18,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 110 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 16:46:18,831 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:46:18,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:46:18,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-24 16:46:18,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-12-24 16:46:18,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 62 states have internal predecessors, (83), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 16:46:18,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 113 transitions. [2023-12-24 16:46:18,859 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 113 transitions. Word has length 111 [2023-12-24 16:46:18,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:46:18,859 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 113 transitions. [2023-12-24 16:46:18,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 16:46:18,860 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 113 transitions. [2023-12-24 16:46:18,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 16:46:18,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:46:18,862 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:46:18,868 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 16:46:19,067 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 16:46:19,080 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:46:19,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:46:19,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1642599684, now seen corresponding path program 1 times [2023-12-24 16:46:19,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:46:19,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944353780] [2023-12-24 16:46:19,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:46:19,082 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 16:46:19,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:46:19,083 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 16:46:19,084 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 16:46:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:46:19,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 16:46:19,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:46:19,323 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:46:19,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:46:19,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:46:19,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944353780] [2023-12-24 16:46:19,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944353780] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:46:19,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:46:19,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:46:19,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24533741] [2023-12-24 16:46:19,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:46:19,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:46:19,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:46:19,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:46:19,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:46:19,326 INFO L87 Difference]: Start difference. First operand 79 states and 113 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:19,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:46:19,385 INFO L93 Difference]: Finished difference Result 166 states and 237 transitions. [2023-12-24 16:46:19,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:46:19,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 111 [2023-12-24 16:46:19,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:46:19,387 INFO L225 Difference]: With dead ends: 166 [2023-12-24 16:46:19,387 INFO L226 Difference]: Without dead ends: 88 [2023-12-24 16:46:19,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 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 16:46:19,388 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 10 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:46:19,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 412 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:46:19,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-24 16:46:19,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2023-12-24 16:46:19,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 66 states have internal predecessors, (87), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 16:46:19,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2023-12-24 16:46:19,396 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 111 [2023-12-24 16:46:19,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:46:19,397 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2023-12-24 16:46:19,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:19,397 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2023-12-24 16:46:19,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 16:46:19,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:46:19,398 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:46:19,411 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 16:46:19,601 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 16:46:19,603 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:46:19,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:46:19,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1642659266, now seen corresponding path program 1 times [2023-12-24 16:46:19,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:46:19,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170432197] [2023-12-24 16:46:19,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:46:19,610 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 16:46:19,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:46:19,612 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 16:46:19,613 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 16:46:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:46:19,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 16:46:19,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:46:19,936 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 17 treesize of output 13 [2023-12-24 16:46:19,972 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 54 treesize of output 42 [2023-12-24 16:46:19,974 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 42 treesize of output 30 [2023-12-24 16:46:20,004 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:46:20,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:46:20,092 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:46:20,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:46:20,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170432197] [2023-12-24 16:46:20,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170432197] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:46:20,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:46:20,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2023-12-24 16:46:20,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327516472] [2023-12-24 16:46:20,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:46:20,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:46:20,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:46:20,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:46:20,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:46:20,097 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:20,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:46:20,372 INFO L93 Difference]: Finished difference Result 229 states and 322 transitions. [2023-12-24 16:46:20,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:46:20,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 111 [2023-12-24 16:46:20,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:46:20,374 INFO L225 Difference]: With dead ends: 229 [2023-12-24 16:46:20,374 INFO L226 Difference]: Without dead ends: 147 [2023-12-24 16:46:20,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:46:20,375 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 168 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:46:20,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 440 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:46:20,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-24 16:46:20,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 97. [2023-12-24 16:46:20,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 80 states have (on average 1.3375) internal successors, (107), 80 states have internal predecessors, (107), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 16:46:20,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 137 transitions. [2023-12-24 16:46:20,384 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 137 transitions. Word has length 111 [2023-12-24 16:46:20,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:46:20,384 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 137 transitions. [2023-12-24 16:46:20,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:20,384 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 137 transitions. [2023-12-24 16:46:20,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 16:46:20,386 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:46:20,386 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:46:20,394 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 16:46:20,595 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 16:46:20,597 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:46:20,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:46:20,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1951243452, now seen corresponding path program 1 times [2023-12-24 16:46:20,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:46:20,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011481110] [2023-12-24 16:46:20,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:46:20,598 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 16:46:20,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:46:20,600 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 16:46:20,601 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 16:46:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:46:20,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 16:46:20,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:46:23,106 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 43 treesize of output 31 [2023-12-24 16:46:23,111 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 39 treesize of output 27 [2023-12-24 16:46:23,115 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 44 treesize of output 28 [2023-12-24 16:46:23,224 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 15 proven. 311 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-12-24 16:46:23,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:46:23,711 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:46:23,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:46:23,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011481110] [2023-12-24 16:46:23,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011481110] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:46:23,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:46:23,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [25] total 30 [2023-12-24 16:46:23,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314568527] [2023-12-24 16:46:23,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:46:23,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:46:23,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:46:23,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:46:23,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2023-12-24 16:46:23,715 INFO L87 Difference]: Start difference. First operand 97 states and 137 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:24,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:46:24,058 INFO L93 Difference]: Finished difference Result 274 states and 382 transitions. [2023-12-24 16:46:24,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:46:24,059 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 111 [2023-12-24 16:46:24,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:46:24,061 INFO L225 Difference]: With dead ends: 274 [2023-12-24 16:46:24,061 INFO L226 Difference]: Without dead ends: 178 [2023-12-24 16:46:24,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=106, Invalid=886, Unknown=0, NotChecked=0, Total=992 [2023-12-24 16:46:24,063 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 302 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:46:24,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 343 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:46:24,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-12-24 16:46:24,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 132. [2023-12-24 16:46:24,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 112 states have (on average 1.3303571428571428) internal successors, (149), 113 states have internal predecessors, (149), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 16:46:24,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 183 transitions. [2023-12-24 16:46:24,072 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 183 transitions. Word has length 111 [2023-12-24 16:46:24,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:46:24,072 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 183 transitions. [2023-12-24 16:46:24,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:24,073 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 183 transitions. [2023-12-24 16:46:24,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 16:46:24,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:46:24,074 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:46:24,092 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 16:46:24,280 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 16:46:24,281 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:46:24,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:46:24,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1943293965, now seen corresponding path program 1 times [2023-12-24 16:46:24,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:46:24,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660866247] [2023-12-24 16:46:24,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:46:24,282 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 16:46:24,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:46:24,283 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 16:46:24,303 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 16:46:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:46:24,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 16:46:24,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:46:24,540 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 16 treesize of output 8 [2023-12-24 16:46:24,547 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:46:24,547 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:46:24,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:46:24,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660866247] [2023-12-24 16:46:24,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660866247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:46:24,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:46:24,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:46:24,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294435429] [2023-12-24 16:46:24,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:46:24,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:46:24,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:46:24,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:46:24,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:46:24,548 INFO L87 Difference]: Start difference. First operand 132 states and 183 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:24,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:46:24,727 INFO L93 Difference]: Finished difference Result 365 states and 506 transitions. [2023-12-24 16:46:24,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:46:24,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 111 [2023-12-24 16:46:24,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:46:24,729 INFO L225 Difference]: With dead ends: 365 [2023-12-24 16:46:24,729 INFO L226 Difference]: Without dead ends: 234 [2023-12-24 16:46:24,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:46:24,731 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 160 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:46:24,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 487 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:46:24,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-12-24 16:46:24,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 209. [2023-12-24 16:46:24,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 170 states have (on average 1.2941176470588236) internal successors, (220), 172 states have internal predecessors, (220), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-24 16:46:24,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 288 transitions. [2023-12-24 16:46:24,742 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 288 transitions. Word has length 111 [2023-12-24 16:46:24,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:46:24,742 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 288 transitions. [2023-12-24 16:46:24,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:24,742 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 288 transitions. [2023-12-24 16:46:24,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 16:46:24,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:46:24,743 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:46:24,758 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 (6)] Ended with exit code 0 [2023-12-24 16:46:24,948 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 16:46:24,949 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:46:24,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:46:24,949 INFO L85 PathProgramCache]: Analyzing trace with hash 621590912, now seen corresponding path program 1 times [2023-12-24 16:46:24,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:46:24,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361584182] [2023-12-24 16:46:24,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:46:24,950 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 16:46:24,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:46:24,951 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 16:46:24,953 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 16:46:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:46:25,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 16:46:25,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:46:27,084 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 44 treesize of output 32 [2023-12-24 16:46:27,088 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 40 treesize of output 28 [2023-12-24 16:46:27,092 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 36 treesize of output 24 [2023-12-24 16:46:27,199 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 15 proven. 311 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-12-24 16:46:27,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:46:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:46:27,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:46:27,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361584182] [2023-12-24 16:46:27,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361584182] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:46:27,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:46:27,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [25] total 30 [2023-12-24 16:46:27,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660326387] [2023-12-24 16:46:27,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:46:27,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:46:27,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:46:27,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:46:27,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2023-12-24 16:46:27,571 INFO L87 Difference]: Start difference. First operand 209 states and 288 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:27,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:46:27,929 INFO L93 Difference]: Finished difference Result 440 states and 604 transitions. [2023-12-24 16:46:27,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:46:27,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 111 [2023-12-24 16:46:27,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:46:27,931 INFO L225 Difference]: With dead ends: 440 [2023-12-24 16:46:27,931 INFO L226 Difference]: Without dead ends: 240 [2023-12-24 16:46:27,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=106, Invalid=886, Unknown=0, NotChecked=0, Total=992 [2023-12-24 16:46:27,933 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 169 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:46:27,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 458 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:46:27,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-12-24 16:46:27,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 184. [2023-12-24 16:46:27,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 147 states have (on average 1.272108843537415) internal successors, (187), 148 states have internal predecessors, (187), 32 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-24 16:46:27,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 251 transitions. [2023-12-24 16:46:27,946 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 251 transitions. Word has length 111 [2023-12-24 16:46:27,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:46:27,947 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 251 transitions. [2023-12-24 16:46:27,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:27,947 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 251 transitions. [2023-12-24 16:46:27,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 16:46:27,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:46:27,948 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:46:27,954 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 16:46:28,148 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 [2023-12-24 16:46:28,149 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:46:28,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:46:28,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1322655490, now seen corresponding path program 1 times [2023-12-24 16:46:28,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:46:28,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759407805] [2023-12-24 16:46:28,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:46:28,150 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 16:46:28,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:46:28,151 INFO L229 MonitoredProcess]: Starting monitored process 8 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 16:46:28,153 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 (8)] Waiting until timeout for monitored process [2023-12-24 16:46:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:46:28,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:46:28,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:46:28,629 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 17 treesize of output 13 [2023-12-24 16:46:28,671 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 54 treesize of output 42 [2023-12-24 16:46:28,673 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 54 treesize of output 34 [2023-12-24 16:46:28,718 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 7 proven. 245 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 16:46:28,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:46:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:46:28,810 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:46:28,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759407805] [2023-12-24 16:46:28,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759407805] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:46:28,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:46:28,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 14 [2023-12-24 16:46:28,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810146342] [2023-12-24 16:46:28,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:46:28,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:46:28,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:46:28,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:46:28,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:46:28,811 INFO L87 Difference]: Start difference. First operand 184 states and 251 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:28,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:46:28,945 INFO L93 Difference]: Finished difference Result 401 states and 546 transitions. [2023-12-24 16:46:28,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:46:28,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 111 [2023-12-24 16:46:28,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:46:28,946 INFO L225 Difference]: With dead ends: 401 [2023-12-24 16:46:28,946 INFO L226 Difference]: Without dead ends: 226 [2023-12-24 16:46:28,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:46:28,948 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 131 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:46:28,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 671 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:46:28,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-12-24 16:46:28,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 223. [2023-12-24 16:46:28,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 178 states have (on average 1.2696629213483146) internal successors, (226), 180 states have internal predecessors, (226), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:46:28,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 302 transitions. [2023-12-24 16:46:28,958 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 302 transitions. Word has length 111 [2023-12-24 16:46:28,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:46:28,958 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 302 transitions. [2023-12-24 16:46:28,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:28,958 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 302 transitions. [2023-12-24 16:46:28,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 16:46:28,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:46:28,959 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:46:28,973 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 (8)] Forceful destruction successful, exit code 0 [2023-12-24 16:46:29,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /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 16:46:29,165 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:46:29,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:46:29,166 INFO L85 PathProgramCache]: Analyzing trace with hash 638888476, now seen corresponding path program 1 times [2023-12-24 16:46:29,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:46:29,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618044205] [2023-12-24 16:46:29,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:46:29,166 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 16:46:29,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:46:29,167 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 16:46:29,169 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 16:46:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:46:29,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 16:46:29,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:46:29,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:46:29,612 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 19 treesize of output 15 [2023-12-24 16:46:29,701 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 69 treesize of output 53 [2023-12-24 16:46:29,703 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 44 treesize of output 32 [2023-12-24 16:46:29,782 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 11 proven. 177 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-24 16:46:29,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:46:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:46:29,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:46:29,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [618044205] [2023-12-24 16:46:29,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [618044205] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:46:29,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:46:29,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 18 [2023-12-24 16:46:29,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737197420] [2023-12-24 16:46:29,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:46:29,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:46:29,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:46:29,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:46:29,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:46:29,914 INFO L87 Difference]: Start difference. First operand 223 states and 302 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:30,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:46:30,204 INFO L93 Difference]: Finished difference Result 502 states and 684 transitions. [2023-12-24 16:46:30,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:46:30,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-12-24 16:46:30,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:46:30,206 INFO L225 Difference]: With dead ends: 502 [2023-12-24 16:46:30,207 INFO L226 Difference]: Without dead ends: 288 [2023-12-24 16:46:30,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:46:30,208 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 154 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:46:30,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 569 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:46:30,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-12-24 16:46:30,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 238. [2023-12-24 16:46:30,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 193 states have (on average 1.2797927461139897) internal successors, (247), 195 states have internal predecessors, (247), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:46:30,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 323 transitions. [2023-12-24 16:46:30,217 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 323 transitions. Word has length 112 [2023-12-24 16:46:30,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:46:30,217 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 323 transitions. [2023-12-24 16:46:30,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:30,217 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 323 transitions. [2023-12-24 16:46:30,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 16:46:30,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:46:30,218 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:46:30,233 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 (9)] Forceful destruction successful, exit code 0 [2023-12-24 16:46:30,424 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 [2023-12-24 16:46:30,425 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:46:30,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:46:30,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1339953054, now seen corresponding path program 1 times [2023-12-24 16:46:30,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:46:30,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033128549] [2023-12-24 16:46:30,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:46:30,426 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 16:46:30,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:46:30,427 INFO L229 MonitoredProcess]: Starting monitored process 10 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 16:46:30,428 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 (10)] Waiting until timeout for monitored process [2023-12-24 16:46:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:46:30,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 16:46:30,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:46:30,680 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 16:46:30,687 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:46:30,687 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:46:30,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:46:30,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033128549] [2023-12-24 16:46:30,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033128549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:46:30,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:46:30,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:46:30,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783954110] [2023-12-24 16:46:30,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:46:30,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:46:30,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:46:30,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:46:30,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:46:30,690 INFO L87 Difference]: Start difference. First operand 238 states and 323 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:30,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:46:30,899 INFO L93 Difference]: Finished difference Result 465 states and 632 transitions. [2023-12-24 16:46:30,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:46:30,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-12-24 16:46:30,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:46:30,901 INFO L225 Difference]: With dead ends: 465 [2023-12-24 16:46:30,901 INFO L226 Difference]: Without dead ends: 236 [2023-12-24 16:46:30,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:46:30,902 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 130 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:46:30,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 404 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:46:30,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-12-24 16:46:30,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 223. [2023-12-24 16:46:30,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 178 states have (on average 1.2584269662921348) internal successors, (224), 180 states have internal predecessors, (224), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:46:30,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 300 transitions. [2023-12-24 16:46:30,910 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 300 transitions. Word has length 112 [2023-12-24 16:46:30,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:46:30,911 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 300 transitions. [2023-12-24 16:46:30,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:30,911 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 300 transitions. [2023-12-24 16:46:30,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 16:46:30,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:46:30,912 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:46:30,929 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 (10)] Forceful destruction successful, exit code 0 [2023-12-24 16:46:31,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /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 16:46:31,118 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:46:31,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:46:31,118 INFO L85 PathProgramCache]: Analyzing trace with hash 939523175, now seen corresponding path program 1 times [2023-12-24 16:46:31,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:46:31,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804094869] [2023-12-24 16:46:31,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:46:31,119 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 16:46:31,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:46:31,120 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 16:46:31,121 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 16:46:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:46:31,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:46:31,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:46:31,786 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 26 treesize of output 18 [2023-12-24 16:46:31,792 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 40 treesize of output 24 [2023-12-24 16:46:31,828 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 17 proven. 177 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-12-24 16:46:31,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:46:31,954 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:46:31,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:46:31,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804094869] [2023-12-24 16:46:31,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804094869] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:46:31,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:46:31,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 18 [2023-12-24 16:46:31,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021828739] [2023-12-24 16:46:31,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:46:31,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:46:31,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:46:31,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:46:31,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:46:31,955 INFO L87 Difference]: Start difference. First operand 223 states and 300 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:32,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:46:32,130 INFO L93 Difference]: Finished difference Result 502 states and 678 transitions. [2023-12-24 16:46:32,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:46:32,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-12-24 16:46:32,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:46:32,132 INFO L225 Difference]: With dead ends: 502 [2023-12-24 16:46:32,132 INFO L226 Difference]: Without dead ends: 288 [2023-12-24 16:46:32,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:46:32,133 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 148 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:46:32,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 331 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:46:32,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-12-24 16:46:32,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 235. [2023-12-24 16:46:32,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 190 states have (on average 1.263157894736842) internal successors, (240), 192 states have internal predecessors, (240), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:46:32,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 316 transitions. [2023-12-24 16:46:32,141 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 316 transitions. Word has length 112 [2023-12-24 16:46:32,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:46:32,141 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 316 transitions. [2023-12-24 16:46:32,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:32,141 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 316 transitions. [2023-12-24 16:46:32,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 16:46:32,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:46:32,142 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:46:32,148 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 (11)] Ended with exit code 0 [2023-12-24 16:46:32,348 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 16:46:32,349 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:46:32,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:46:32,349 INFO L85 PathProgramCache]: Analyzing trace with hash 238458597, now seen corresponding path program 1 times [2023-12-24 16:46:32,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:46:32,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208849663] [2023-12-24 16:46:32,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:46:32,349 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 16:46:32,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:46:32,350 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 16:46:32,352 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 16:46:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:46:32,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 16:46:32,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:46:32,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:46:32,822 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 19 treesize of output 15 [2023-12-24 16:46:32,878 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 24 treesize of output 16 [2023-12-24 16:46:32,918 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 35 treesize of output 23 [2023-12-24 16:46:33,005 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 11 proven. 177 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-24 16:46:33,006 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:46:33,178 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:46:33,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:46:33,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208849663] [2023-12-24 16:46:33,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208849663] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:46:33,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:46:33,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 20 [2023-12-24 16:46:33,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608728298] [2023-12-24 16:46:33,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:46:33,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:46:33,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:46:33,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:46:33,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:46:33,180 INFO L87 Difference]: Start difference. First operand 235 states and 316 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:33,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:46:33,539 INFO L93 Difference]: Finished difference Result 488 states and 658 transitions. [2023-12-24 16:46:33,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:46:33,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-12-24 16:46:33,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:46:33,541 INFO L225 Difference]: With dead ends: 488 [2023-12-24 16:46:33,541 INFO L226 Difference]: Without dead ends: 262 [2023-12-24 16:46:33,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2023-12-24 16:46:33,542 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 156 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:46:33,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 692 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:46:33,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-12-24 16:46:33,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 238. [2023-12-24 16:46:33,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 193 states have (on average 1.2590673575129534) internal successors, (243), 195 states have internal predecessors, (243), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:46:33,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 319 transitions. [2023-12-24 16:46:33,549 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 319 transitions. Word has length 112 [2023-12-24 16:46:33,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:46:33,550 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 319 transitions. [2023-12-24 16:46:33,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:33,550 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 319 transitions. [2023-12-24 16:46:33,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 16:46:33,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:46:33,550 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:46:33,570 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 (12)] Forceful destruction successful, exit code 0 [2023-12-24 16:46:33,757 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 16:46:33,757 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:46:33,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:46:33,757 INFO L85 PathProgramCache]: Analyzing trace with hash -648824727, now seen corresponding path program 1 times [2023-12-24 16:46:33,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:46:33,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321186793] [2023-12-24 16:46:33,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:46:33,758 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 16:46:33,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:46:33,759 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 16:46:33,760 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 16:46:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:46:33,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 16:46:33,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:46:34,383 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 21 treesize of output 17 [2023-12-24 16:46:34,432 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 26 treesize of output 18 [2023-12-24 16:46:34,458 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 44 treesize of output 28 [2023-12-24 16:46:34,524 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 17 proven. 177 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-12-24 16:46:34,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:46:34,685 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:46:34,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:46:34,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321186793] [2023-12-24 16:46:34,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [321186793] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:46:34,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:46:34,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 23 [2023-12-24 16:46:34,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218862275] [2023-12-24 16:46:34,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:46:34,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:46:34,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:46:34,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:46:34,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:46:34,686 INFO L87 Difference]: Start difference. First operand 238 states and 319 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:35,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:46:35,056 INFO L93 Difference]: Finished difference Result 521 states and 700 transitions. [2023-12-24 16:46:35,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:46:35,056 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-12-24 16:46:35,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:46:35,058 INFO L225 Difference]: With dead ends: 521 [2023-12-24 16:46:35,058 INFO L226 Difference]: Without dead ends: 292 [2023-12-24 16:46:35,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2023-12-24 16:46:35,059 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 198 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:46:35,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 865 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:46:35,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-12-24 16:46:35,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 262. [2023-12-24 16:46:35,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 217 states have (on average 1.271889400921659) internal successors, (276), 219 states have internal predecessors, (276), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:46:35,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 352 transitions. [2023-12-24 16:46:35,067 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 352 transitions. Word has length 112 [2023-12-24 16:46:35,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:46:35,067 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 352 transitions. [2023-12-24 16:46:35,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:35,067 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 352 transitions. [2023-12-24 16:46:35,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 16:46:35,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:46:35,068 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:46:35,088 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 16:46:35,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 16:46:35,275 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:46:35,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:46:35,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1349889305, now seen corresponding path program 1 times [2023-12-24 16:46:35,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:46:35,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74071571] [2023-12-24 16:46:35,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:46:35,275 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 16:46:35,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:46:35,276 INFO L229 MonitoredProcess]: Starting monitored process 14 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 16:46:35,278 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 (14)] Waiting until timeout for monitored process [2023-12-24 16:46:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:46:35,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:46:35,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:46:35,965 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 19 [2023-12-24 16:46:35,968 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 41 treesize of output 25 [2023-12-24 16:46:36,020 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 17 proven. 177 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-12-24 16:46:36,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:46:36,187 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:46:36,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:46:36,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74071571] [2023-12-24 16:46:36,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74071571] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:46:36,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:46:36,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 18 [2023-12-24 16:46:36,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256048738] [2023-12-24 16:46:36,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:46:36,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:46:36,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:46:36,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:46:36,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:46:36,189 INFO L87 Difference]: Start difference. First operand 262 states and 352 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:36,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:46:36,404 INFO L93 Difference]: Finished difference Result 521 states and 699 transitions. [2023-12-24 16:46:36,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:46:36,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-12-24 16:46:36,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:46:36,406 INFO L225 Difference]: With dead ends: 521 [2023-12-24 16:46:36,406 INFO L226 Difference]: Without dead ends: 260 [2023-12-24 16:46:36,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:46:36,407 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 117 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:46:36,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 325 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:46:36,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-24 16:46:36,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 257. [2023-12-24 16:46:36,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 212 states have (on average 1.2688679245283019) internal successors, (269), 214 states have internal predecessors, (269), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:46:36,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 345 transitions. [2023-12-24 16:46:36,419 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 345 transitions. Word has length 112 [2023-12-24 16:46:36,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:46:36,420 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 345 transitions. [2023-12-24 16:46:36,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:36,420 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 345 transitions. [2023-12-24 16:46:36,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 16:46:36,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:46:36,421 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:46:36,440 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 (14)] Ended with exit code 0 [2023-12-24 16:46:36,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /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 16:46:36,630 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:46:36,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:46:36,631 INFO L85 PathProgramCache]: Analyzing trace with hash -567829615, now seen corresponding path program 1 times [2023-12-24 16:46:36,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:46:36,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595116597] [2023-12-24 16:46:36,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:46:36,631 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 16:46:36,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:46:36,633 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 16:46:36,634 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 16:46:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:46:36,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 16:46:36,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:46:37,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-12-24 16:46:37,411 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 75 treesize of output 55 [2023-12-24 16:46:37,413 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 33 [2023-12-24 16:46:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 17 proven. 177 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-12-24 16:46:37,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:46:37,595 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:46:37,596 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:46:37,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595116597] [2023-12-24 16:46:37,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595116597] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:46:37,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:46:37,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 18 [2023-12-24 16:46:37,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855056695] [2023-12-24 16:46:37,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:46:37,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:46:37,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:46:37,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:46:37,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:46:37,598 INFO L87 Difference]: Start difference. First operand 257 states and 345 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:37,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:46:37,848 INFO L93 Difference]: Finished difference Result 690 states and 917 transitions. [2023-12-24 16:46:37,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:46:37,849 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 113 [2023-12-24 16:46:37,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:46:37,850 INFO L225 Difference]: With dead ends: 690 [2023-12-24 16:46:37,850 INFO L226 Difference]: Without dead ends: 434 [2023-12-24 16:46:37,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:46:37,851 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 103 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:46:37,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 534 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:46:37,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2023-12-24 16:46:37,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 290. [2023-12-24 16:46:37,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 245 states have (on average 1.2448979591836735) internal successors, (305), 247 states have internal predecessors, (305), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:46:37,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 381 transitions. [2023-12-24 16:46:37,868 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 381 transitions. Word has length 113 [2023-12-24 16:46:37,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:46:37,869 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 381 transitions. [2023-12-24 16:46:37,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:37,869 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 381 transitions. [2023-12-24 16:46:37,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-24 16:46:37,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:46:37,870 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:46:37,887 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 16:46:38,078 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 16:46:38,079 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:46:38,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:46:38,079 INFO L85 PathProgramCache]: Analyzing trace with hash -600799736, now seen corresponding path program 1 times [2023-12-24 16:46:38,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:46:38,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010153780] [2023-12-24 16:46:38,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:46:38,080 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 16:46:38,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:46:38,081 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 16:46:38,085 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 16:46:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:46:38,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 16:46:38,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:46:41,265 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 36 treesize of output 28 [2023-12-24 16:46:41,270 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 32 treesize of output 24 [2023-12-24 16:46:41,275 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 35 treesize of output 23 [2023-12-24 16:46:41,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2023-12-24 16:46:41,996 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 4 proven. 324 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-24 16:46:41,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:46:48,963 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:46:48,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:46:48,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010153780] [2023-12-24 16:46:48,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010153780] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:46:48,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:46:48,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2023-12-24 16:46:48,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100137992] [2023-12-24 16:46:48,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:46:48,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:46:48,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:46:48,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:46:48,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:46:48,964 INFO L87 Difference]: Start difference. First operand 290 states and 381 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:57,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:46:57,765 INFO L93 Difference]: Finished difference Result 718 states and 937 transitions. [2023-12-24 16:46:57,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 16:46:57,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 114 [2023-12-24 16:46:57,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:46:57,774 INFO L225 Difference]: With dead ends: 718 [2023-12-24 16:46:57,774 INFO L226 Difference]: Without dead ends: 429 [2023-12-24 16:46:57,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:46:57,775 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 176 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:46:57,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 578 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-24 16:46:57,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2023-12-24 16:46:57,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 262. [2023-12-24 16:46:57,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 219 states have (on average 1.2237442922374429) internal successors, (268), 220 states have internal predecessors, (268), 36 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 16:46:57,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 340 transitions. [2023-12-24 16:46:57,788 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 340 transitions. Word has length 114 [2023-12-24 16:46:57,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:46:57,789 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 340 transitions. [2023-12-24 16:46:57,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:46:57,789 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 340 transitions. [2023-12-24 16:46:57,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 16:46:57,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:46:57,790 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:46:57,806 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 16:46:57,997 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 [2023-12-24 16:46:57,997 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:46:57,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:46:57,997 INFO L85 PathProgramCache]: Analyzing trace with hash -640146953, now seen corresponding path program 1 times [2023-12-24 16:46:57,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:46:57,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417647158] [2023-12-24 16:46:57,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:46:57,998 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 16:46:57,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:46:57,999 INFO L229 MonitoredProcess]: Starting monitored process 17 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 16:46:58,001 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 (17)] Waiting until timeout for monitored process [2023-12-24 16:46:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:46:58,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 16:46:58,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:46:59,823 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 22 treesize of output 14 [2023-12-24 16:47:04,716 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 36 treesize of output 28 [2023-12-24 16:47:04,723 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 54 treesize of output 38 [2023-12-24 16:47:04,729 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 44 treesize of output 28 [2023-12-24 16:47:04,740 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 30 treesize of output 18 [2023-12-24 16:47:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 4 proven. 320 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-12-24 16:47:05,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:47:12,954 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:47:12,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:47:12,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417647158] [2023-12-24 16:47:12,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417647158] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:47:12,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:47:12,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22] total 28 [2023-12-24 16:47:12,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610021977] [2023-12-24 16:47:12,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:47:12,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:47:12,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:47:12,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:47:12,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2023-12-24 16:47:12,956 INFO L87 Difference]: Start difference. First operand 262 states and 340 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:47:20,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:47:20,500 INFO L93 Difference]: Finished difference Result 629 states and 816 transitions. [2023-12-24 16:47:20,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 16:47:20,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 115 [2023-12-24 16:47:20,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:47:20,507 INFO L225 Difference]: With dead ends: 629 [2023-12-24 16:47:20,507 INFO L226 Difference]: Without dead ends: 368 [2023-12-24 16:47:20,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=136, Invalid=856, Unknown=0, NotChecked=0, Total=992 [2023-12-24 16:47:20,508 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 234 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:47:20,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 428 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-24 16:47:20,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2023-12-24 16:47:20,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 262. [2023-12-24 16:47:20,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 219 states have (on average 1.2191780821917808) internal successors, (267), 220 states have internal predecessors, (267), 36 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 16:47:20,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 339 transitions. [2023-12-24 16:47:20,519 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 339 transitions. Word has length 115 [2023-12-24 16:47:20,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:47:20,519 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 339 transitions. [2023-12-24 16:47:20,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:47:20,519 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 339 transitions. [2023-12-24 16:47:20,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 16:47:20,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:47:20,520 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:47:20,529 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 (17)] Forceful destruction successful, exit code 0 [2023-12-24 16:47:20,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /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 16:47:20,727 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:47:20,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:47:20,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1845344712, now seen corresponding path program 1 times [2023-12-24 16:47:20,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:47:20,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692724729] [2023-12-24 16:47:20,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:47:20,728 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 16:47:20,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:47:20,729 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 16:47:20,730 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 16:47:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:47:20,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 16:47:20,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:47:21,242 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 17 treesize of output 13 [2023-12-24 16:47:21,351 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 60 treesize of output 44 [2023-12-24 16:47:21,355 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 39 treesize of output 27 [2023-12-24 16:47:21,420 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 7 proven. 245 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 16:47:21,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:47:21,558 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:47:21,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:47:21,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692724729] [2023-12-24 16:47:21,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692724729] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:47:21,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:47:21,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2023-12-24 16:47:21,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397951559] [2023-12-24 16:47:21,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:47:21,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:47:21,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:47:21,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:47:21,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:47:21,559 INFO L87 Difference]: Start difference. First operand 262 states and 339 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:47:21,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:47:21,706 INFO L93 Difference]: Finished difference Result 295 states and 377 transitions. [2023-12-24 16:47:21,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:47:21,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 115 [2023-12-24 16:47:21,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:47:21,708 INFO L225 Difference]: With dead ends: 295 [2023-12-24 16:47:21,708 INFO L226 Difference]: Without dead ends: 293 [2023-12-24 16:47:21,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-12-24 16:47:21,709 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 66 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:47:21,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 405 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:47:21,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-24 16:47:21,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 239. [2023-12-24 16:47:21,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 195 states have (on average 1.2) internal successors, (234), 196 states have internal predecessors, (234), 36 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 16:47:21,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 306 transitions. [2023-12-24 16:47:21,719 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 306 transitions. Word has length 115 [2023-12-24 16:47:21,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:47:21,719 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 306 transitions. [2023-12-24 16:47:21,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:47:21,720 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 306 transitions. [2023-12-24 16:47:21,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 16:47:21,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:47:21,720 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:47:21,730 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 16:47:21,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 16:47:21,928 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:47:21,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:47:21,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1845285130, now seen corresponding path program 1 times [2023-12-24 16:47:21,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:47:21,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956655863] [2023-12-24 16:47:21,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:47:21,929 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 16:47:21,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:47:21,930 INFO L229 MonitoredProcess]: Starting monitored process 19 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 16:47:21,933 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 (19)] Waiting until timeout for monitored process [2023-12-24 16:47:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:47:22,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 16:47:22,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:47:22,698 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 24 treesize of output 20 [2023-12-24 16:47:23,087 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 1 proven. 107 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-24 16:47:23,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:47:23,447 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:47:23,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:47:23,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956655863] [2023-12-24 16:47:23,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956655863] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:47:23,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:47:23,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 18 [2023-12-24 16:47:23,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513661606] [2023-12-24 16:47:23,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:47:23,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:47:23,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:47:23,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:47:23,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:47:23,448 INFO L87 Difference]: Start difference. First operand 239 states and 306 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:47:24,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:47:24,115 INFO L93 Difference]: Finished difference Result 599 states and 765 transitions. [2023-12-24 16:47:24,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 16:47:24,116 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 115 [2023-12-24 16:47:24,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:47:24,117 INFO L225 Difference]: With dead ends: 599 [2023-12-24 16:47:24,117 INFO L226 Difference]: Without dead ends: 377 [2023-12-24 16:47:24,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2023-12-24 16:47:24,119 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 103 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:47:24,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 552 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:47:24,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-24 16:47:24,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 351. [2023-12-24 16:47:24,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 307 states have (on average 1.231270358306189) internal successors, (378), 308 states have internal predecessors, (378), 36 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 16:47:24,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 450 transitions. [2023-12-24 16:47:24,130 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 450 transitions. Word has length 115 [2023-12-24 16:47:24,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:47:24,131 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 450 transitions. [2023-12-24 16:47:24,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:47:24,132 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 450 transitions. [2023-12-24 16:47:24,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-24 16:47:24,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:47:24,132 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:47:24,142 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 (19)] Forceful destruction successful, exit code 0 [2023-12-24 16:47:24,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /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 16:47:24,340 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:47:24,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:47:24,341 INFO L85 PathProgramCache]: Analyzing trace with hash -2059658580, now seen corresponding path program 1 times [2023-12-24 16:47:24,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:47:24,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510951330] [2023-12-24 16:47:24,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:47:24,341 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 16:47:24,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:47:24,342 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 16:47:24,347 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 16:47:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:47:24,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 16:47:24,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:47:27,503 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 37 treesize of output 29 [2023-12-24 16:47:27,508 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 33 treesize of output 25 [2023-12-24 16:47:27,512 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 36 treesize of output 24 [2023-12-24 16:47:27,517 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 32 treesize of output 20 [2023-12-24 16:47:28,026 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 4 proven. 308 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-12-24 16:47:28,027 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:47:34,452 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:47:34,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:47:34,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510951330] [2023-12-24 16:47:34,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510951330] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:47:34,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:47:34,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2023-12-24 16:47:34,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4138966] [2023-12-24 16:47:34,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:47:34,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:47:34,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:47:34,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:47:34,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:47:34,454 INFO L87 Difference]: Start difference. First operand 351 states and 450 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:47:39,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:47:39,726 INFO L93 Difference]: Finished difference Result 767 states and 981 transitions. [2023-12-24 16:47:39,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:47:39,738 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 116 [2023-12-24 16:47:39,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:47:39,740 INFO L225 Difference]: With dead ends: 767 [2023-12-24 16:47:39,740 INFO L226 Difference]: Without dead ends: 433 [2023-12-24 16:47:39,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-12-24 16:47:39,742 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 251 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:47:39,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 386 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-24 16:47:39,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-12-24 16:47:39,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 351. [2023-12-24 16:47:39,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 307 states have (on average 1.224755700325733) internal successors, (376), 308 states have internal predecessors, (376), 36 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 16:47:39,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 448 transitions. [2023-12-24 16:47:39,755 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 448 transitions. Word has length 116 [2023-12-24 16:47:39,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:47:39,756 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 448 transitions. [2023-12-24 16:47:39,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:47:39,756 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 448 transitions. [2023-12-24 16:47:39,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-24 16:47:39,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:47:39,756 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:47:39,774 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 16:47:39,957 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 16:47:39,957 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:47:39,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:47:39,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1244881833, now seen corresponding path program 1 times [2023-12-24 16:47:39,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:47:39,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809174772] [2023-12-24 16:47:39,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:47:39,958 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 16:47:39,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:47:39,963 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 16:47:39,965 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 16:47:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:47:40,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 16:47:40,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:47:41,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:47:41,690 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 36 treesize of output 24 [2023-12-24 16:47:41,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:47:41,767 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 10 proven. 314 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-12-24 16:47:41,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:47:42,147 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:47:42,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:47:42,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809174772] [2023-12-24 16:47:42,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1809174772] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:47:42,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:47:42,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 23 [2023-12-24 16:47:42,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923812715] [2023-12-24 16:47:42,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:47:42,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:47:42,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:47:42,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:47:42,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:47:42,153 INFO L87 Difference]: Start difference. First operand 351 states and 448 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:47:42,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:47:42,815 INFO L93 Difference]: Finished difference Result 755 states and 952 transitions. [2023-12-24 16:47:42,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:47:42,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 116 [2023-12-24 16:47:42,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:47:42,817 INFO L225 Difference]: With dead ends: 755 [2023-12-24 16:47:42,817 INFO L226 Difference]: Without dead ends: 421 [2023-12-24 16:47:42,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2023-12-24 16:47:42,818 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 166 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:47:42,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 555 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:47:42,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2023-12-24 16:47:42,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 374. [2023-12-24 16:47:42,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 330 states have (on average 1.2272727272727273) internal successors, (405), 331 states have internal predecessors, (405), 36 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 16:47:42,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 477 transitions. [2023-12-24 16:47:42,829 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 477 transitions. Word has length 116 [2023-12-24 16:47:42,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:47:42,829 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 477 transitions. [2023-12-24 16:47:42,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:47:42,829 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 477 transitions. [2023-12-24 16:47:42,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-24 16:47:42,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:47:42,830 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:47:42,838 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 16:47:43,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 16:47:43,037 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:47:43,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:47:43,038 INFO L85 PathProgramCache]: Analyzing trace with hash -2102043685, now seen corresponding path program 1 times [2023-12-24 16:47:43,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:47:43,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055289356] [2023-12-24 16:47:43,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:47:43,038 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 16:47:43,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:47:43,039 INFO L229 MonitoredProcess]: Starting monitored process 22 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 16:47:43,064 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 (22)] Waiting until timeout for monitored process [2023-12-24 16:47:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:47:43,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 16:47:43,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:47:43,421 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 23 treesize of output 15 [2023-12-24 16:47:43,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:47:43,438 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:47:43,438 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:47:43,438 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:47:43,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055289356] [2023-12-24 16:47:43,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055289356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:47:43,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:47:43,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 16:47:43,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191302963] [2023-12-24 16:47:43,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:47:43,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:47:43,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:47:43,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:47:43,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:47:43,439 INFO L87 Difference]: Start difference. First operand 374 states and 477 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:47:43,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:47:43,740 INFO L93 Difference]: Finished difference Result 757 states and 957 transitions. [2023-12-24 16:47:43,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:47:43,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 116 [2023-12-24 16:47:43,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:47:43,741 INFO L225 Difference]: With dead ends: 757 [2023-12-24 16:47:43,741 INFO L226 Difference]: Without dead ends: 400 [2023-12-24 16:47:43,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:47:43,743 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 49 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:47:43,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 495 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:47:43,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2023-12-24 16:47:43,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 345. [2023-12-24 16:47:43,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 301 states have (on average 1.2159468438538206) internal successors, (366), 302 states have internal predecessors, (366), 36 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 16:47:43,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 438 transitions. [2023-12-24 16:47:43,754 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 438 transitions. Word has length 116 [2023-12-24 16:47:43,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:47:43,754 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 438 transitions. [2023-12-24 16:47:43,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:47:43,754 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 438 transitions. [2023-12-24 16:47:43,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 16:47:43,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:47:43,756 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:47:43,764 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 (22)] Ended with exit code 0 [2023-12-24 16:47:43,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /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 16:47:43,964 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:47:43,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:47:43,964 INFO L85 PathProgramCache]: Analyzing trace with hash -767574167, now seen corresponding path program 1 times [2023-12-24 16:47:43,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:47:43,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726638032] [2023-12-24 16:47:43,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:47:43,964 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 16:47:43,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:47:43,965 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 16:47:44,000 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 16:47:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:47:44,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-24 16:47:44,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:47:53,093 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 46 treesize of output 34 [2023-12-24 16:47:53,099 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 68 treesize of output 48 [2023-12-24 16:47:53,105 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 35 treesize of output 23 [2023-12-24 16:47:54,023 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 15 proven. 335 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-24 16:47:54,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:48:02,627 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:48:02,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:48:02,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726638032] [2023-12-24 16:48:02,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726638032] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:48:02,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:48:02,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [30] total 38 [2023-12-24 16:48:02,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151900622] [2023-12-24 16:48:02,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:48:02,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 16:48:02,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:48:02,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 16:48:02,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 16:48:02,628 INFO L87 Difference]: Start difference. First operand 345 states and 438 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:48:10,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:48:10,267 INFO L93 Difference]: Finished difference Result 781 states and 986 transitions. [2023-12-24 16:48:10,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 16:48:10,275 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 117 [2023-12-24 16:48:10,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:48:10,276 INFO L225 Difference]: With dead ends: 781 [2023-12-24 16:48:10,277 INFO L226 Difference]: Without dead ends: 453 [2023-12-24 16:48:10,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=188, Invalid=1618, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 16:48:10,278 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 208 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:48:10,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 484 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-24 16:48:10,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2023-12-24 16:48:10,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 349. [2023-12-24 16:48:10,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 305 states have (on average 1.219672131147541) internal successors, (372), 306 states have internal predecessors, (372), 36 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 16:48:10,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 444 transitions. [2023-12-24 16:48:10,289 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 444 transitions. Word has length 117 [2023-12-24 16:48:10,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:48:10,289 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 444 transitions. [2023-12-24 16:48:10,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:48:10,290 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 444 transitions. [2023-12-24 16:48:10,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 16:48:10,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:48:10,291 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:48:10,308 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 16:48:10,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 16:48:10,499 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:48:10,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:48:10,499 INFO L85 PathProgramCache]: Analyzing trace with hash -66509589, now seen corresponding path program 1 times [2023-12-24 16:48:10,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:48:10,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016405386] [2023-12-24 16:48:10,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:48:10,500 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 16:48:10,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:48:10,514 INFO L229 MonitoredProcess]: Starting monitored process 24 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 16:48:10,515 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 (24)] Waiting until timeout for monitored process [2023-12-24 16:48:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:48:11,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 16:48:11,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:48:12,259 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 22 treesize of output 14 [2023-12-24 16:48:16,854 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 37 treesize of output 29 [2023-12-24 16:48:16,860 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 55 treesize of output 39 [2023-12-24 16:48:16,866 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 37 treesize of output 25 [2023-12-24 16:48:16,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2023-12-24 16:48:17,628 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 4 proven. 320 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-12-24 16:48:17,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:48:24,091 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:48:24,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:48:24,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016405386] [2023-12-24 16:48:24,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016405386] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:48:24,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:48:24,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22] total 28 [2023-12-24 16:48:24,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572442032] [2023-12-24 16:48:24,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:48:24,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:48:24,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:48:24,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:48:24,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2023-12-24 16:48:24,093 INFO L87 Difference]: Start difference. First operand 349 states and 444 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:48:29,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:48:29,669 INFO L93 Difference]: Finished difference Result 711 states and 898 transitions. [2023-12-24 16:48:29,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:48:29,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 117 [2023-12-24 16:48:29,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:48:29,681 INFO L225 Difference]: With dead ends: 711 [2023-12-24 16:48:29,681 INFO L226 Difference]: Without dead ends: 379 [2023-12-24 16:48:29,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2023-12-24 16:48:29,683 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 136 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:48:29,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 392 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-24 16:48:29,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-12-24 16:48:29,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 345. [2023-12-24 16:48:29,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 301 states have (on average 1.2093023255813953) internal successors, (364), 302 states have internal predecessors, (364), 36 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 16:48:29,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 436 transitions. [2023-12-24 16:48:29,692 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 436 transitions. Word has length 117 [2023-12-24 16:48:29,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:48:29,692 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 436 transitions. [2023-12-24 16:48:29,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:48:29,693 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 436 transitions. [2023-12-24 16:48:29,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 16:48:29,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:48:29,693 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:48:29,724 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 (24)] Forceful destruction successful, exit code 0 [2023-12-24 16:48:29,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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 16:48:29,901 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:48:29,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:48:29,901 INFO L85 PathProgramCache]: Analyzing trace with hash -725022507, now seen corresponding path program 1 times [2023-12-24 16:48:29,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:48:29,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839716965] [2023-12-24 16:48:29,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:48:29,901 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 16:48:29,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:48:29,925 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 16:48:29,926 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 16:48:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:48:30,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:48:30,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:48:30,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-12-24 16:48:30,578 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 66 treesize of output 50 [2023-12-24 16:48:30,581 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 33 [2023-12-24 16:48:30,634 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 7 proven. 245 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 16:48:30,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:48:30,761 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:48:30,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:48:30,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839716965] [2023-12-24 16:48:30,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839716965] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:48:30,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:48:30,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 15 [2023-12-24 16:48:30,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133050006] [2023-12-24 16:48:30,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:48:30,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:48:30,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:48:30,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:48:30,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:48:30,763 INFO L87 Difference]: Start difference. First operand 345 states and 436 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:48:31,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:48:31,048 INFO L93 Difference]: Finished difference Result 853 states and 1067 transitions. [2023-12-24 16:48:31,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:48:31,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 117 [2023-12-24 16:48:31,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:48:31,050 INFO L225 Difference]: With dead ends: 853 [2023-12-24 16:48:31,050 INFO L226 Difference]: Without dead ends: 525 [2023-12-24 16:48:31,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-12-24 16:48:31,060 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 116 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:48:31,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 762 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:48:31,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2023-12-24 16:48:31,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 397. [2023-12-24 16:48:31,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 353 states have (on average 1.2011331444759208) internal successors, (424), 354 states have internal predecessors, (424), 36 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 16:48:31,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 496 transitions. [2023-12-24 16:48:31,101 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 496 transitions. Word has length 117 [2023-12-24 16:48:31,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:48:31,101 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 496 transitions. [2023-12-24 16:48:31,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:48:31,101 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 496 transitions. [2023-12-24 16:48:31,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 16:48:31,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:48:31,102 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:48:31,111 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 (25)] Ended with exit code 0 [2023-12-24 16:48:31,310 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 16:48:31,310 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:48:31,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:48:31,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1203052261, now seen corresponding path program 1 times [2023-12-24 16:48:31,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:48:31,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714015370] [2023-12-24 16:48:31,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:48:31,311 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 16:48:31,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:48:31,312 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 16:48:31,314 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 16:48:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:48:31,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 16:48:31,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:48:32,483 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 23 treesize of output 19 [2023-12-24 16:48:32,487 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 19 treesize of output 15 [2023-12-24 16:48:32,528 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 13 treesize of output 9 [2023-12-24 16:48:32,541 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 14 treesize of output 10 [2023-12-24 16:48:34,388 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 19 [2023-12-24 16:48:36,624 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 33 treesize of output 21 [2023-12-24 16:48:37,254 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 47 treesize of output 31 [2023-12-24 16:48:37,718 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 3 proven. 233 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 16:48:37,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:48:38,691 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 28 treesize of output 24 [2023-12-24 16:48:38,715 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 24 treesize of output 20 [2023-12-24 16:48:38,717 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 28 treesize of output 20 [2023-12-24 16:48:38,800 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 13 treesize of output 9 [2023-12-24 16:48:39,729 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:48:39,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714015370] [2023-12-24 16:48:39,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714015370] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:48:39,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [95002924] [2023-12-24 16:48:39,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:48:39,730 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:48:39,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:48:39,774 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:48:39,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2023-12-24 16:48:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:48:40,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:48:40,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:48:42,282 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 47 treesize of output 35 [2023-12-24 16:48:42,518 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:48:42,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:48:42,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [95002924] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:48:42,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:48:42,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19] total 24 [2023-12-24 16:48:42,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668532885] [2023-12-24 16:48:42,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:48:42,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:48:42,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:48:42,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:48:42,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=863, Unknown=0, NotChecked=0, Total=992 [2023-12-24 16:48:42,520 INFO L87 Difference]: Start difference. First operand 397 states and 496 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:48:43,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:48:43,189 INFO L93 Difference]: Finished difference Result 845 states and 1050 transitions. [2023-12-24 16:48:43,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:48:43,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 122 [2023-12-24 16:48:43,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:48:43,190 INFO L225 Difference]: With dead ends: 845 [2023-12-24 16:48:43,190 INFO L226 Difference]: Without dead ends: 465 [2023-12-24 16:48:43,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=154, Invalid=1106, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 16:48:43,192 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 118 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:48:43,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 364 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:48:43,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2023-12-24 16:48:43,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 401. [2023-12-24 16:48:43,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 357 states have (on average 1.1876750700280112) internal successors, (424), 358 states have internal predecessors, (424), 36 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 16:48:43,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 496 transitions. [2023-12-24 16:48:43,206 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 496 transitions. Word has length 122 [2023-12-24 16:48:43,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:48:43,206 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 496 transitions. [2023-12-24 16:48:43,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:48:43,207 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 496 transitions. [2023-12-24 16:48:43,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 16:48:43,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:48:43,208 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:48:43,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2023-12-24 16:48:43,435 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 16:48:43,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 16:48:43,624 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:48:43,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:48:43,625 INFO L85 PathProgramCache]: Analyzing trace with hash 315122705, now seen corresponding path program 1 times [2023-12-24 16:48:43,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:48:43,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1310734148] [2023-12-24 16:48:43,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:48:43,625 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 16:48:43,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:48:43,627 INFO L229 MonitoredProcess]: Starting monitored process 28 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 16:48:43,636 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 (28)] Waiting until timeout for monitored process [2023-12-24 16:48:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:48:43,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:48:43,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:48:44,354 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 16 treesize of output 8 [2023-12-24 16:48:44,361 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 23 treesize of output 19 [2023-12-24 16:48:44,366 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 19 treesize of output 15 [2023-12-24 16:48:44,410 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 36 treesize of output 28 [2023-12-24 16:48:44,414 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 52 treesize of output 36 [2023-12-24 16:48:45,558 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 4 proven. 212 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-12-24 16:48:45,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:48:45,626 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 28 treesize of output 24 [2023-12-24 16:48:45,629 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 24 treesize of output 20 [2023-12-24 16:48:45,693 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 14 treesize of output 10 [2023-12-24 16:48:47,271 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 28 treesize of output 20 [2023-12-24 16:48:48,054 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 16:48:48,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-12-24 16:48:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-24 16:48:48,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:48:48,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1310734148] [2023-12-24 16:48:48,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1310734148] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 16:48:48,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:48:48,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2023-12-24 16:48:48,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9457189] [2023-12-24 16:48:48,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:48:48,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-24 16:48:48,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:48:48,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-24 16:48:48,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:48:48,226 INFO L87 Difference]: Start difference. First operand 401 states and 496 transitions. Second operand has 17 states, 15 states have (on average 4.533333333333333) internal successors, (68), 17 states have internal predecessors, (68), 4 states have call successors, (30), 3 states have call predecessors, (30), 5 states have return successors, (30), 2 states have call predecessors, (30), 4 states have call successors, (30) [2023-12-24 16:48:55,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:48:55,517 INFO L93 Difference]: Finished difference Result 760 states and 924 transitions. [2023-12-24 16:48:55,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 16:48:55,524 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.533333333333333) internal successors, (68), 17 states have internal predecessors, (68), 4 states have call successors, (30), 3 states have call predecessors, (30), 5 states have return successors, (30), 2 states have call predecessors, (30), 4 states have call successors, (30) Word has length 122 [2023-12-24 16:48:55,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:48:55,525 INFO L225 Difference]: With dead ends: 760 [2023-12-24 16:48:55,525 INFO L226 Difference]: Without dead ends: 376 [2023-12-24 16:48:55,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 229 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=301, Invalid=1031, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 16:48:55,526 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 366 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:48:55,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 712 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-24 16:48:55,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2023-12-24 16:48:55,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 353. [2023-12-24 16:48:55,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 303 states have (on average 1.1452145214521452) internal successors, (347), 304 states have internal predecessors, (347), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:48:55,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 423 transitions. [2023-12-24 16:48:55,546 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 423 transitions. Word has length 122 [2023-12-24 16:48:55,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:48:55,546 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 423 transitions. [2023-12-24 16:48:55,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.533333333333333) internal successors, (68), 17 states have internal predecessors, (68), 4 states have call successors, (30), 3 states have call predecessors, (30), 5 states have return successors, (30), 2 states have call predecessors, (30), 4 states have call successors, (30) [2023-12-24 16:48:55,546 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 423 transitions. [2023-12-24 16:48:55,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-24 16:48:55,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:48:55,547 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:48:55,566 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 (28)] Forceful destruction successful, exit code 0 [2023-12-24 16:48:55,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /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 16:48:55,756 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:48:55,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:48:55,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1199766450, now seen corresponding path program 1 times [2023-12-24 16:48:55,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:48:55,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959411772] [2023-12-24 16:48:55,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:48:55,757 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 16:48:55,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:48:55,777 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 16:48:55,779 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 16:48:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:48:56,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 16:48:56,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:48:57,003 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 23 treesize of output 19 [2023-12-24 16:48:57,010 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 46 treesize of output 34 [2023-12-24 16:48:58,100 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 19 [2023-12-24 16:49:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 10 proven. 314 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-12-24 16:49:01,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:49:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:49:01,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:01,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959411772] [2023-12-24 16:49:01,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959411772] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:49:01,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:49:01,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [21] total 26 [2023-12-24 16:49:01,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365818990] [2023-12-24 16:49:01,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:01,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:49:01,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:01,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:49:01,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2023-12-24 16:49:01,934 INFO L87 Difference]: Start difference. First operand 353 states and 423 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:49:02,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:02,338 INFO L93 Difference]: Finished difference Result 790 states and 945 transitions. [2023-12-24 16:49:02,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:49:02,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 123 [2023-12-24 16:49:02,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:02,339 INFO L225 Difference]: With dead ends: 790 [2023-12-24 16:49:02,340 INFO L226 Difference]: Without dead ends: 462 [2023-12-24 16:49:02,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2023-12-24 16:49:02,340 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 138 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:02,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 475 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:49:02,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-12-24 16:49:02,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 393. [2023-12-24 16:49:02,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 343 states have (on average 1.1457725947521866) internal successors, (393), 344 states have internal predecessors, (393), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:49:02,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 469 transitions. [2023-12-24 16:49:02,357 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 469 transitions. Word has length 123 [2023-12-24 16:49:02,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:02,357 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 469 transitions. [2023-12-24 16:49:02,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:49:02,357 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 469 transitions. [2023-12-24 16:49:02,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-24 16:49:02,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:02,358 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:49:02,366 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 (29)] Forceful destruction successful, exit code 0 [2023-12-24 16:49:02,565 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 [2023-12-24 16:49:02,565 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:02,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:02,566 INFO L85 PathProgramCache]: Analyzing trace with hash -498701872, now seen corresponding path program 1 times [2023-12-24 16:49:02,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:02,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405352206] [2023-12-24 16:49:02,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:02,566 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 16:49:02,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:02,567 INFO L229 MonitoredProcess]: Starting monitored process 30 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 16:49:02,600 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 (30)] Waiting until timeout for monitored process [2023-12-24 16:49:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:02,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 16:49:02,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 2 proven. 150 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2023-12-24 16:49:03,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:49:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:49:03,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:03,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405352206] [2023-12-24 16:49:03,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405352206] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:49:03,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:49:03,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2023-12-24 16:49:03,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324341563] [2023-12-24 16:49:03,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:03,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:49:03,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:03,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:49:03,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:49:03,345 INFO L87 Difference]: Start difference. First operand 393 states and 469 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, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:49:03,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:03,485 INFO L93 Difference]: Finished difference Result 823 states and 980 transitions. [2023-12-24 16:49:03,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:49:03,486 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, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 123 [2023-12-24 16:49:03,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:03,487 INFO L225 Difference]: With dead ends: 823 [2023-12-24 16:49:03,487 INFO L226 Difference]: Without dead ends: 455 [2023-12-24 16:49:03,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-24 16:49:03,488 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 84 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:03,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 409 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:49:03,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-12-24 16:49:03,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 427. [2023-12-24 16:49:03,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 366 states have (on average 1.1284153005464481) internal successors, (413), 368 states have internal predecessors, (413), 46 states have call successors, (46), 14 states have call predecessors, (46), 14 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 16:49:03,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 505 transitions. [2023-12-24 16:49:03,523 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 505 transitions. Word has length 123 [2023-12-24 16:49:03,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:03,523 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 505 transitions. [2023-12-24 16:49:03,523 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, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:49:03,523 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 505 transitions. [2023-12-24 16:49:03,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-24 16:49:03,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:03,524 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:49:03,545 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 (30)] Forceful destruction successful, exit code 0 [2023-12-24 16:49:03,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /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 16:49:03,732 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:03,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:03,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1289762512, now seen corresponding path program 1 times [2023-12-24 16:49:03,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:03,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779651839] [2023-12-24 16:49:03,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:03,733 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 16:49:03,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:03,734 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 16:49:03,736 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 16:49:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:04,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 16:49:04,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:04,880 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 23 treesize of output 19 [2023-12-24 16:49:04,886 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 46 treesize of output 34 [2023-12-24 16:49:07,262 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 36 treesize of output 24 [2023-12-24 16:49:10,696 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 10 proven. 314 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-12-24 16:49:10,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:49:11,477 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:49:11,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:11,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779651839] [2023-12-24 16:49:11,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779651839] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:49:11,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:49:11,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [23] total 30 [2023-12-24 16:49:11,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240906228] [2023-12-24 16:49:11,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:11,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 16:49:11,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:11,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 16:49:11,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2023-12-24 16:49:11,479 INFO L87 Difference]: Start difference. First operand 427 states and 505 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, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:49:12,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:12,239 INFO L93 Difference]: Finished difference Result 952 states and 1121 transitions. [2023-12-24 16:49:12,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 16:49:12,239 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, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 123 [2023-12-24 16:49:12,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:12,241 INFO L225 Difference]: With dead ends: 952 [2023-12-24 16:49:12,241 INFO L226 Difference]: Without dead ends: 550 [2023-12-24 16:49:12,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=172, Invalid=1018, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 16:49:12,242 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 195 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:12,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 643 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:49:12,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2023-12-24 16:49:12,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 427. [2023-12-24 16:49:12,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 366 states have (on average 1.1284153005464481) internal successors, (413), 368 states have internal predecessors, (413), 46 states have call successors, (46), 14 states have call predecessors, (46), 14 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 16:49:12,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 505 transitions. [2023-12-24 16:49:12,262 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 505 transitions. Word has length 123 [2023-12-24 16:49:12,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:12,262 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 505 transitions. [2023-12-24 16:49:12,262 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, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:49:12,262 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 505 transitions. [2023-12-24 16:49:12,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-24 16:49:12,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:12,263 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:49:12,272 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 (31)] Ended with exit code 0 [2023-12-24 16:49:12,472 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 [2023-12-24 16:49:12,472 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:12,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:12,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1712464338, now seen corresponding path program 1 times [2023-12-24 16:49:12,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:12,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994941661] [2023-12-24 16:49:12,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:12,473 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 16:49:12,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:12,474 INFO L229 MonitoredProcess]: Starting monitored process 32 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 16:49:12,489 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 (32)] Waiting until timeout for monitored process [2023-12-24 16:49:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:12,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 16:49:12,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:13,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:49:14,287 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 10 proven. 314 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-12-24 16:49:14,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:49:14,447 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:49:14,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:14,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994941661] [2023-12-24 16:49:14,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994941661] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:49:14,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:49:14,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [19] total 22 [2023-12-24 16:49:14,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487883545] [2023-12-24 16:49:14,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:49:14,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:49:14,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:14,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:49:14,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2023-12-24 16:49:14,448 INFO L87 Difference]: Start difference. First operand 427 states and 505 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, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:49:14,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:49:14,705 INFO L93 Difference]: Finished difference Result 829 states and 979 transitions. [2023-12-24 16:49:14,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:49:14,706 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, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 123 [2023-12-24 16:49:14,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:49:14,707 INFO L225 Difference]: With dead ends: 829 [2023-12-24 16:49:14,707 INFO L226 Difference]: Without dead ends: 427 [2023-12-24 16:49:14,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2023-12-24 16:49:14,708 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 77 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:49:14,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 276 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:49:14,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2023-12-24 16:49:14,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 387. [2023-12-24 16:49:14,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 326 states have (on average 1.1257668711656441) internal successors, (367), 328 states have internal predecessors, (367), 46 states have call successors, (46), 14 states have call predecessors, (46), 14 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 16:49:14,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 459 transitions. [2023-12-24 16:49:14,728 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 459 transitions. Word has length 123 [2023-12-24 16:49:14,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:49:14,729 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 459 transitions. [2023-12-24 16:49:14,729 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, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:49:14,729 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 459 transitions. [2023-12-24 16:49:14,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 16:49:14,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:49:14,729 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:49:14,753 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 (32)] Ended with exit code 0 [2023-12-24 16:49:14,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /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 16:49:14,937 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:49:14,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:49:14,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1263937858, now seen corresponding path program 1 times [2023-12-24 16:49:14,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:49:14,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919089398] [2023-12-24 16:49:14,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:14,939 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 16:49:14,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:49:14,940 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 16:49:14,974 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 16:49:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:15,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 16:49:15,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:16,936 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 32 treesize of output 24 [2023-12-24 16:49:16,949 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 16:49:17,311 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 23 treesize of output 19 [2023-12-24 16:49:17,319 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 46 treesize of output 34 [2023-12-24 16:49:17,362 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 81 treesize of output 61 [2023-12-24 16:49:17,369 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 41 [2023-12-24 16:49:17,419 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 22 treesize of output 14 [2023-12-24 16:49:19,493 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 9 proven. 335 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-24 16:49:19,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:49:19,574 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 28 treesize of output 24 [2023-12-24 16:49:22,674 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 80 treesize of output 64 [2023-12-24 16:49:23,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:49:23,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919089398] [2023-12-24 16:49:23,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919089398] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:49:23,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1800327517] [2023-12-24 16:49:23,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:49:23,840 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:49:23,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:49:23,840 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:49:23,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2023-12-24 16:49:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:49:24,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-24 16:49:24,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:49:34,759 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 32 treesize of output 24 [2023-12-24 16:49:34,771 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 16:49:36,510 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 53 treesize of output 37 [2023-12-24 16:49:37,411 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 22 treesize of output 14 [2023-12-24 16:49:37,418 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 31 treesize of output 19 [2023-12-24 16:49:37,447 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 8 treesize of output 4 [2023-12-24 16:49:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 9 proven. 335 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-24 16:49:37,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:49:40,038 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 28 treesize of output 24 [2023-12-24 16:49:47,713 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 80 treesize of output 64 [2023-12-24 16:49:49,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1800327517] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:49:49,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:49:49,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 46 [2023-12-24 16:49:49,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028002076] [2023-12-24 16:49:49,092 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:49:49,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-24 16:49:49,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:49:49,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-24 16:49:49,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=3252, Unknown=0, NotChecked=0, Total=3540 [2023-12-24 16:49:49,094 INFO L87 Difference]: Start difference. First operand 387 states and 459 transitions. Second operand has 47 states, 41 states have (on average 3.2195121951219514) internal successors, (132), 40 states have internal predecessors, (132), 14 states have call successors, (30), 14 states have call predecessors, (30), 14 states have return successors, (30), 8 states have call predecessors, (30), 14 states have call successors, (30) [2023-12-24 16:50:07,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:50:07,075 INFO L93 Difference]: Finished difference Result 848 states and 979 transitions. [2023-12-24 16:50:07,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-24 16:50:07,076 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 41 states have (on average 3.2195121951219514) internal successors, (132), 40 states have internal predecessors, (132), 14 states have call successors, (30), 14 states have call predecessors, (30), 14 states have return successors, (30), 8 states have call predecessors, (30), 14 states have call successors, (30) Word has length 128 [2023-12-24 16:50:07,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:50:07,078 INFO L225 Difference]: With dead ends: 848 [2023-12-24 16:50:07,078 INFO L226 Difference]: Without dead ends: 486 [2023-12-24 16:50:07,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 270 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2464 ImplicationChecksByTransitivity, 34.1s TimeCoverageRelationStatistics Valid=1082, Invalid=7290, Unknown=0, NotChecked=0, Total=8372 [2023-12-24 16:50:07,081 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 1137 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:50:07,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1137 Valid, 1569 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2390 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-24 16:50:07,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2023-12-24 16:50:07,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 367. [2023-12-24 16:50:07,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 311 states have (on average 1.1189710610932475) internal successors, (348), 312 states have internal predecessors, (348), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:50:07,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 424 transitions. [2023-12-24 16:50:07,123 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 424 transitions. Word has length 128 [2023-12-24 16:50:07,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:50:07,124 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 424 transitions. [2023-12-24 16:50:07,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 41 states have (on average 3.2195121951219514) internal successors, (132), 40 states have internal predecessors, (132), 14 states have call successors, (30), 14 states have call predecessors, (30), 14 states have return successors, (30), 8 states have call predecessors, (30), 14 states have call successors, (30) [2023-12-24 16:50:07,124 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 424 transitions. [2023-12-24 16:50:07,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 16:50:07,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:50:07,125 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:07,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2023-12-24 16:50:07,342 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 (33)] Forceful destruction successful, exit code 0 [2023-12-24 16:50:07,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 16:50:07,533 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:50:07,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:50:07,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1614253126, now seen corresponding path program 1 times [2023-12-24 16:50:07,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:50:07,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512064940] [2023-12-24 16:50:07,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:50:07,534 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 16:50:07,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:50:07,535 INFO L229 MonitoredProcess]: Starting monitored process 35 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 16:50:07,537 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 (35)] Waiting until timeout for monitored process [2023-12-24 16:50:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:50:07,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 16:50:07,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:50:09,239 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 23 treesize of output 19 [2023-12-24 16:50:09,247 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 56 treesize of output 40 [2023-12-24 16:50:09,254 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 73 treesize of output 53 [2023-12-24 16:50:12,255 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 23 treesize of output 15 [2023-12-24 16:50:12,300 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 41 treesize of output 25 [2023-12-24 16:50:13,494 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 16 proven. 314 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-24 16:50:13,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:50:14,063 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 28 treesize of output 24 [2023-12-24 16:50:14,070 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 39 treesize of output 31 [2023-12-24 16:50:20,305 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 56 treesize of output 40 [2023-12-24 16:50:22,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:50:22,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512064940] [2023-12-24 16:50:22,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512064940] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:50:22,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [334856993] [2023-12-24 16:50:22,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:50:22,056 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:50:22,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:50:22,058 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:50:22,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2023-12-24 16:50:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:50:22,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-24 16:50:22,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:50:40,060 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 32 treesize of output 24 [2023-12-24 16:50:40,068 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 16:50:42,653 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 53 treesize of output 37 [2023-12-24 16:50:43,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:50:43,940 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 41 treesize of output 25 [2023-12-24 16:50:43,945 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 22 treesize of output 14 [2023-12-24 16:50:44,498 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 14 proven. 356 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-24 16:50:44,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:51:07,777 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 83 treesize of output 67 [2023-12-24 16:51:11,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [334856993] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:51:11,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:51:11,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 33] total 55 [2023-12-24 16:51:11,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096923365] [2023-12-24 16:51:11,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:51:11,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-12-24 16:51:11,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:51:11,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-12-24 16:51:11,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=4933, Unknown=0, NotChecked=0, Total=5402 [2023-12-24 16:51:11,120 INFO L87 Difference]: Start difference. First operand 367 states and 424 transitions. Second operand has 56 states, 48 states have (on average 2.8125) internal successors, (135), 46 states have internal predecessors, (135), 15 states have call successors, (30), 13 states have call predecessors, (30), 15 states have return successors, (30), 10 states have call predecessors, (30), 15 states have call successors, (30) [2023-12-24 16:51:45,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:51:45,530 INFO L93 Difference]: Finished difference Result 762 states and 862 transitions. [2023-12-24 16:51:45,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-24 16:51:45,531 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 48 states have (on average 2.8125) internal successors, (135), 46 states have internal predecessors, (135), 15 states have call successors, (30), 13 states have call predecessors, (30), 15 states have return successors, (30), 10 states have call predecessors, (30), 15 states have call successors, (30) Word has length 128 [2023-12-24 16:51:45,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:51:45,532 INFO L225 Difference]: With dead ends: 762 [2023-12-24 16:51:45,532 INFO L226 Difference]: Without dead ends: 424 [2023-12-24 16:51:45,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3581 ImplicationChecksByTransitivity, 72.6s TimeCoverageRelationStatistics Valid=1554, Invalid=10656, Unknown=0, NotChecked=0, Total=12210 [2023-12-24 16:51:45,535 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 1282 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 2606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:51:45,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1283 Valid, 1389 Invalid, 2606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-12-24 16:51:45,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2023-12-24 16:51:45,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 368. [2023-12-24 16:51:45,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 306 states have (on average 1.1013071895424837) internal successors, (337), 307 states have internal predecessors, (337), 38 states have call successors, (38), 23 states have call predecessors, (38), 23 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:51:45,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 413 transitions. [2023-12-24 16:51:45,578 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 413 transitions. Word has length 128 [2023-12-24 16:51:45,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:51:45,578 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 413 transitions. [2023-12-24 16:51:45,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 48 states have (on average 2.8125) internal successors, (135), 46 states have internal predecessors, (135), 15 states have call successors, (30), 13 states have call predecessors, (30), 15 states have return successors, (30), 10 states have call predecessors, (30), 15 states have call successors, (30) [2023-12-24 16:51:45,578 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 413 transitions. [2023-12-24 16:51:45,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 16:51:45,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:51:45,579 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:45,587 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 (35)] Ended with exit code 0 [2023-12-24 16:51:45,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (36)] Ended with exit code 0 [2023-12-24 16:51:45,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:51:45,987 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:51:45,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:51:45,988 INFO L85 PathProgramCache]: Analyzing trace with hash 869571072, now seen corresponding path program 1 times [2023-12-24 16:51:45,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:51:45,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845841461] [2023-12-24 16:51:45,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:51:45,988 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 16:51:45,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:51:45,989 INFO L229 MonitoredProcess]: Starting monitored process 37 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 16:51:45,993 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 (37)] Waiting until timeout for monitored process [2023-12-24 16:51:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:51:46,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 16:51:46,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:51:47,363 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 21 treesize of output 17 [2023-12-24 16:51:47,509 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 44 treesize of output 28 [2023-12-24 16:51:47,513 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 22 treesize of output 14 [2023-12-24 16:51:47,788 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 17 proven. 177 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-12-24 16:51:47,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:51:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:51:48,301 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:51:48,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845841461] [2023-12-24 16:51:48,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845841461] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:51:48,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:51:48,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [22] total 32 [2023-12-24 16:51:48,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562456418] [2023-12-24 16:51:48,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:51:48,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 16:51:48,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:51:48,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 16:51:48,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=901, Unknown=0, NotChecked=0, Total=992 [2023-12-24 16:51:48,302 INFO L87 Difference]: Start difference. First operand 368 states and 413 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:51:49,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:51:49,753 INFO L93 Difference]: Finished difference Result 757 states and 849 transitions. [2023-12-24 16:51:49,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 16:51:49,753 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 128 [2023-12-24 16:51:49,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:51:49,758 INFO L225 Difference]: With dead ends: 757 [2023-12-24 16:51:49,758 INFO L226 Difference]: Without dead ends: 426 [2023-12-24 16:51:49,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=189, Invalid=1617, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 16:51:49,760 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 138 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:51:49,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1257 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 16:51:49,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2023-12-24 16:51:49,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 389. [2023-12-24 16:51:49,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 327 states have (on average 1.1009174311926606) internal successors, (360), 328 states have internal predecessors, (360), 38 states have call successors, (38), 23 states have call predecessors, (38), 23 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:51:49,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 436 transitions. [2023-12-24 16:51:49,843 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 436 transitions. Word has length 128 [2023-12-24 16:51:49,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:51:49,853 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 436 transitions. [2023-12-24 16:51:49,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:51:49,853 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 436 transitions. [2023-12-24 16:51:49,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 16:51:49,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:51:49,854 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:49,865 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 (37)] Forceful destruction successful, exit code 0 [2023-12-24 16:51:50,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /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 16:51:50,063 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:51:50,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:51:50,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1127736510, now seen corresponding path program 1 times [2023-12-24 16:51:50,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:51:50,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988344912] [2023-12-24 16:51:50,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:51:50,064 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 16:51:50,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:51:50,065 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 16:51:50,067 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 16:51:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:51:50,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:51:50,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:51:51,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:51:51,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2023-12-24 16:51:51,487 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 11 proven. 177 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-24 16:51:51,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:51:51,644 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:51:51,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:51:51,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988344912] [2023-12-24 16:51:51,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988344912] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:51:51,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:51:51,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2023-12-24 16:51:51,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756610032] [2023-12-24 16:51:51,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:51:51,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:51:51,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:51:51,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:51:51,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:51:51,646 INFO L87 Difference]: Start difference. First operand 389 states and 436 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:51:51,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:51:51,940 INFO L93 Difference]: Finished difference Result 827 states and 926 transitions. [2023-12-24 16:51:51,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:51:51,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 128 [2023-12-24 16:51:51,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:51:51,942 INFO L225 Difference]: With dead ends: 827 [2023-12-24 16:51:51,942 INFO L226 Difference]: Without dead ends: 475 [2023-12-24 16:51:51,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:51:51,943 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 52 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:51:51,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 391 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:51:51,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2023-12-24 16:51:51,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 431. [2023-12-24 16:51:51,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 369 states have (on average 1.100271002710027) internal successors, (406), 370 states have internal predecessors, (406), 38 states have call successors, (38), 23 states have call predecessors, (38), 23 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:51:51,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 482 transitions. [2023-12-24 16:51:51,987 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 482 transitions. Word has length 128 [2023-12-24 16:51:51,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:51:51,988 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 482 transitions. [2023-12-24 16:51:51,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:51:51,988 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 482 transitions. [2023-12-24 16:51:51,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 16:51:51,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:51:51,988 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:52,012 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 16:51:52,199 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 [2023-12-24 16:51:52,199 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:51:52,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:51:52,199 INFO L85 PathProgramCache]: Analyzing trace with hash 931610686, now seen corresponding path program 1 times [2023-12-24 16:51:52,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:51:52,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522454641] [2023-12-24 16:51:52,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:51:52,200 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 16:51:52,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:51:52,201 INFO L229 MonitoredProcess]: Starting monitored process 39 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 16:51:52,239 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 (39)] Waiting until timeout for monitored process [2023-12-24 16:51:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:51:52,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:51:52,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:51:53,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:51:53,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2023-12-24 16:51:53,417 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 11 proven. 177 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-24 16:51:53,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:51:53,545 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:51:53,546 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:51:53,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522454641] [2023-12-24 16:51:53,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522454641] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:51:53,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:51:53,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2023-12-24 16:51:53,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417613617] [2023-12-24 16:51:53,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:51:53,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:51:53,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:51:53,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:51:53,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:51:53,548 INFO L87 Difference]: Start difference. First operand 431 states and 482 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:51:53,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:51:53,782 INFO L93 Difference]: Finished difference Result 820 states and 918 transitions. [2023-12-24 16:51:53,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:51:53,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 128 [2023-12-24 16:51:53,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:51:53,784 INFO L225 Difference]: With dead ends: 820 [2023-12-24 16:51:53,784 INFO L226 Difference]: Without dead ends: 426 [2023-12-24 16:51:53,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:51:53,785 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 70 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:51:53,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 300 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:51:53,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2023-12-24 16:51:53,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 412. [2023-12-24 16:51:53,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 350 states have (on average 1.0971428571428572) internal successors, (384), 351 states have internal predecessors, (384), 38 states have call successors, (38), 23 states have call predecessors, (38), 23 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:51:53,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 460 transitions. [2023-12-24 16:51:53,825 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 460 transitions. Word has length 128 [2023-12-24 16:51:53,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:51:53,825 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 460 transitions. [2023-12-24 16:51:53,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:51:53,825 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 460 transitions. [2023-12-24 16:51:53,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 16:51:53,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:51:53,826 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:53,836 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 (39)] Forceful destruction successful, exit code 0 [2023-12-24 16:51:54,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /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 16:51:54,037 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:51:54,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:51:54,037 INFO L85 PathProgramCache]: Analyzing trace with hash 618263420, now seen corresponding path program 1 times [2023-12-24 16:51:54,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:51:54,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347897811] [2023-12-24 16:51:54,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:51:54,038 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 16:51:54,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:51:54,039 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 16:51:54,040 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 16:51:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:51:54,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:51:54,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:51:54,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:51:55,172 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 32 treesize of output 20 [2023-12-24 16:51:55,232 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 11 proven. 177 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-24 16:51:55,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:51:55,374 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:51:55,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:51:55,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347897811] [2023-12-24 16:51:55,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347897811] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:51:55,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:51:55,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2023-12-24 16:51:55,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016061735] [2023-12-24 16:51:55,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:51:55,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:51:55,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:51:55,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:51:55,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:51:55,375 INFO L87 Difference]: Start difference. First operand 412 states and 460 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:51:55,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:51:55,641 INFO L93 Difference]: Finished difference Result 776 states and 867 transitions. [2023-12-24 16:51:55,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:51:55,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 128 [2023-12-24 16:51:55,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:51:55,643 INFO L225 Difference]: With dead ends: 776 [2023-12-24 16:51:55,643 INFO L226 Difference]: Without dead ends: 401 [2023-12-24 16:51:55,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:51:55,644 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 75 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:51:55,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 310 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:51:55,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2023-12-24 16:51:55,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 393. [2023-12-24 16:51:55,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 331 states have (on average 1.0906344410876132) internal successors, (361), 332 states have internal predecessors, (361), 38 states have call successors, (38), 23 states have call predecessors, (38), 23 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:51:55,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 437 transitions. [2023-12-24 16:51:55,683 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 437 transitions. Word has length 128 [2023-12-24 16:51:55,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:51:55,683 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 437 transitions. [2023-12-24 16:51:55,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:51:55,684 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 437 transitions. [2023-12-24 16:51:55,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 16:51:55,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:51:55,684 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:55,697 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 (40)] Ended with exit code 0 [2023-12-24 16:51:55,891 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 16:51:55,892 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:51:55,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:51:55,892 INFO L85 PathProgramCache]: Analyzing trace with hash 422137596, now seen corresponding path program 1 times [2023-12-24 16:51:55,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:51:55,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216160524] [2023-12-24 16:51:55,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:51:55,892 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 16:51:55,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:51:55,893 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 16:51:55,895 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 16:51:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:51:56,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:51:56,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:51:56,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:51:57,260 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 32 treesize of output 20 [2023-12-24 16:51:57,312 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 11 proven. 177 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-24 16:51:57,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:51:57,475 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:51:57,475 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:51:57,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216160524] [2023-12-24 16:51:57,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216160524] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:51:57,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:51:57,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2023-12-24 16:51:57,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432042410] [2023-12-24 16:51:57,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:51:57,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:51:57,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:51:57,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:51:57,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:51:57,478 INFO L87 Difference]: Start difference. First operand 393 states and 437 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:51:57,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:51:57,752 INFO L93 Difference]: Finished difference Result 770 states and 855 transitions. [2023-12-24 16:51:57,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:51:57,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 128 [2023-12-24 16:51:57,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:51:57,754 INFO L225 Difference]: With dead ends: 770 [2023-12-24 16:51:57,754 INFO L226 Difference]: Without dead ends: 414 [2023-12-24 16:51:57,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:51:57,755 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 43 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:51:57,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 404 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:51:57,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2023-12-24 16:51:57,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 393. [2023-12-24 16:51:57,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 331 states have (on average 1.0876132930513596) internal successors, (360), 332 states have internal predecessors, (360), 38 states have call successors, (38), 23 states have call predecessors, (38), 23 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:51:57,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 436 transitions. [2023-12-24 16:51:57,809 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 436 transitions. Word has length 128 [2023-12-24 16:51:57,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:51:57,809 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 436 transitions. [2023-12-24 16:51:57,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:51:57,809 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 436 transitions. [2023-12-24 16:51:57,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 16:51:57,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:51:57,810 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:57,817 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 16:51:58,017 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 16:51:58,017 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:51:58,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:51:58,017 INFO L85 PathProgramCache]: Analyzing trace with hash -588979654, now seen corresponding path program 1 times [2023-12-24 16:51:58,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:51:58,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600531068] [2023-12-24 16:51:58,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:51:58,018 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 16:51:58,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:51:58,019 INFO L229 MonitoredProcess]: Starting monitored process 42 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 16:51:58,022 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 (42)] Waiting until timeout for monitored process [2023-12-24 16:51:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:51:58,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 16:51:58,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:51:59,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:51:59,738 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 32 treesize of output 20 [2023-12-24 16:51:59,793 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 11 proven. 177 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-24 16:51:59,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:51:59,962 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:51:59,962 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:51:59,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1600531068] [2023-12-24 16:51:59,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1600531068] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:51:59,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:51:59,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2023-12-24 16:51:59,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593338564] [2023-12-24 16:51:59,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:51:59,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:51:59,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:51:59,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:51:59,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-12-24 16:51:59,964 INFO L87 Difference]: Start difference. First operand 393 states and 436 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:52:00,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:52:00,263 INFO L93 Difference]: Finished difference Result 757 states and 840 transitions. [2023-12-24 16:52:00,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:52:00,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 128 [2023-12-24 16:52:00,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:52:00,266 INFO L225 Difference]: With dead ends: 757 [2023-12-24 16:52:00,266 INFO L226 Difference]: Without dead ends: 401 [2023-12-24 16:52:00,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-12-24 16:52:00,267 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 57 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:52:00,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 300 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:52:00,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2023-12-24 16:52:00,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 393. [2023-12-24 16:52:00,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 331 states have (on average 1.0845921450151057) internal successors, (359), 332 states have internal predecessors, (359), 38 states have call successors, (38), 23 states have call predecessors, (38), 23 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 16:52:00,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 435 transitions. [2023-12-24 16:52:00,305 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 435 transitions. Word has length 128 [2023-12-24 16:52:00,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:52:00,306 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 435 transitions. [2023-12-24 16:52:00,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:52:00,306 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 435 transitions. [2023-12-24 16:52:00,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 16:52:00,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:52:00,306 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:52:00,314 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 (42)] Forceful destruction successful, exit code 0 [2023-12-24 16:52:00,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /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 16:52:00,514 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:52:00,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:52:00,514 INFO L85 PathProgramCache]: Analyzing trace with hash -330814216, now seen corresponding path program 1 times [2023-12-24 16:52:00,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:52:00,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947766718] [2023-12-24 16:52:00,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:52:00,515 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 16:52:00,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:52:00,516 INFO L229 MonitoredProcess]: Starting monitored process 43 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 16:52:00,521 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 (43)] Waiting until timeout for monitored process [2023-12-24 16:52:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:52:00,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 16:52:00,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:52:01,430 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 27 treesize of output 23 [2023-12-24 16:52:01,579 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 58 treesize of output 42 [2023-12-24 16:52:01,584 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 28 treesize of output 20 [2023-12-24 16:52:01,679 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 39 treesize of output 27 [2023-12-24 16:52:01,945 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 11 proven. 177 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-24 16:52:01,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:52:02,490 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 16:52:02,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:52:02,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947766718] [2023-12-24 16:52:02,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947766718] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:52:02,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:52:02,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [21] total 30 [2023-12-24 16:52:02,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380560674] [2023-12-24 16:52:02,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:52:02,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 16:52:02,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:52:02,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 16:52:02,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=789, Unknown=0, NotChecked=0, Total=870 [2023-12-24 16:52:02,492 INFO L87 Difference]: Start difference. First operand 393 states and 435 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:52:03,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:52:03,958 INFO L93 Difference]: Finished difference Result 751 states and 832 transitions. [2023-12-24 16:52:03,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 16:52:03,960 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 128 [2023-12-24 16:52:03,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:52:03,960 INFO L225 Difference]: With dead ends: 751 [2023-12-24 16:52:03,960 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 16:52:03,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=162, Invalid=1320, Unknown=0, NotChecked=0, Total=1482 [2023-12-24 16:52:03,961 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 90 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:52:03,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 1088 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 16:52:03,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 16:52:03,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 16:52:03,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 16:52:03,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 16:52:03,962 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 128 [2023-12-24 16:52:03,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:52:03,962 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 16:52:03,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 16:52:03,962 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 16:52:03,962 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 16:52:03,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 16:52:03,971 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 (43)] Ended with exit code 0 [2023-12-24 16:52:04,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /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 16:52:04,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-24 17:00:53,035 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 17:00:53,040 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-13-39-9-29-8-29-9-29-10-29-10-29-10-29-10-29-10-26-10-6-10-6-10-6-10-4-9-4-9-3-9-3-9-3-9-3-9-3-9-3-8-3-5-3-3-3-3-3-3-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-73-39-15-29-10-29-10-29-10-29-10-29-10-29-10-29-10-26-10-6-10-6-10-6-10-4-9-4-9-3-9-3-9-3-9-3-9-3-9-3-8-3-5-3-3-3-3-3-3-2-2-2-1 context. [2023-12-24 17:00:53,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 17:00:53,045 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-24 17:00:53,046 INFO L158 Benchmark]: Toolchain (without parser) took 875830.53ms. Allocated memory was 316.7MB in the beginning and 810.5MB in the end (delta: 493.9MB). Free memory was 263.9MB in the beginning and 739.3MB in the end (delta: -475.4MB). Peak memory consumption was 19.6MB. Max. memory is 8.0GB. [2023-12-24 17:00:53,046 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 184.5MB. Free memory was 133.7MB in the beginning and 133.6MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 17:00:53,046 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.97ms. Allocated memory is still 316.7MB. Free memory was 263.9MB in the beginning and 248.6MB in the end (delta: 15.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-24 17:00:53,047 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.83ms. Allocated memory is still 316.7MB. Free memory was 248.6MB in the beginning and 245.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 17:00:53,047 INFO L158 Benchmark]: Boogie Preprocessor took 105.35ms. Allocated memory is still 316.7MB. Free memory was 245.6MB in the beginning and 239.8MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-24 17:00:53,047 INFO L158 Benchmark]: RCFGBuilder took 674.64ms. Allocated memory is still 316.7MB. Free memory was 239.8MB in the beginning and 195.8MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. [2023-12-24 17:00:53,047 INFO L158 Benchmark]: TraceAbstraction took 874774.72ms. Allocated memory was 316.7MB in the beginning and 810.5MB in the end (delta: 493.9MB). Free memory was 194.7MB in the beginning and 739.3MB in the end (delta: -544.6MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 17:00:53,048 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 184.5MB. Free memory was 133.7MB in the beginning and 133.6MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 221.97ms. Allocated memory is still 316.7MB. Free memory was 263.9MB in the beginning and 248.6MB in the end (delta: 15.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 48.83ms. Allocated memory is still 316.7MB. Free memory was 248.6MB in the beginning and 245.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 105.35ms. Allocated memory is still 316.7MB. Free memory was 245.6MB in the beginning and 239.8MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 674.64ms. Allocated memory is still 316.7MB. Free memory was 239.8MB in the beginning and 195.8MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. * TraceAbstraction took 874774.72ms. Allocated memory was 316.7MB in the beginning and 810.5MB in the end (delta: 493.9MB). Free memory was 194.7MB in the beginning and 739.3MB in the end (delta: -544.6MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-3-29-3-24-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-28-28-3-24-2-3-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown