/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-a_file-79.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 14:01:01,839 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 14:01:01,902 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 14:01:01,905 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 14:01:01,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 14:01:01,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 14:01:01,933 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 14:01:01,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 14:01:01,934 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 14:01:01,937 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 14:01:01,938 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 14:01:01,938 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 14:01:01,939 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 14:01:01,940 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 14:01:01,940 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 14:01:01,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 14:01:01,940 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 14:01:01,941 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 14:01:01,941 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 14:01:01,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 14:01:01,941 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 14:01:01,942 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 14:01:01,942 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 14:01:01,942 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 14:01:01,942 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 14:01:01,942 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 14:01:01,942 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 14:01:01,943 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 14:01:01,943 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 14:01:01,943 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 14:01:01,944 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 14:01:01,944 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 14:01:01,944 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 14:01:01,944 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 14:01:01,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 14:01:01,944 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 14:01:01,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 14:01:01,945 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 14:01:01,945 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 14:01:01,945 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 14:01:01,945 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 14:01:01,945 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 14:01:01,945 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 14:01:01,945 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 14:01:01,946 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 14:01:01,946 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 14:01:01,946 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 14:01:02,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 14:01:02,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 14:01:02,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 14:01:02,172 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 14:01:02,172 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 14:01:02,173 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-79.i [2023-12-24 14:01:03,190 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 14:01:03,360 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 14:01:03,360 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-79.i [2023-12-24 14:01:03,372 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97662fc85/7398114e75644e45ae30e4732dac0f18/FLAGaa28cc0ba [2023-12-24 14:01:03,393 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97662fc85/7398114e75644e45ae30e4732dac0f18 [2023-12-24 14:01:03,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 14:01:03,396 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 14:01:03,397 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 14:01:03,397 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 14:01:03,402 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 14:01:03,402 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 02:01:03" (1/1) ... [2023-12-24 14:01:03,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34e92619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:01:03, skipping insertion in model container [2023-12-24 14:01:03,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 02:01:03" (1/1) ... [2023-12-24 14:01:03,438 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 14:01:03,525 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-a_file-79.i[916,929] [2023-12-24 14:01:03,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 14:01:03,572 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 14:01:03,580 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-a_file-79.i[916,929] [2023-12-24 14:01:03,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 14:01:03,620 INFO L206 MainTranslator]: Completed translation [2023-12-24 14:01:03,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:01:03 WrapperNode [2023-12-24 14:01:03,621 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 14:01:03,622 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 14:01:03,622 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 14:01:03,622 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 14:01:03,626 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:01:03" (1/1) ... [2023-12-24 14:01:03,637 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:01:03" (1/1) ... [2023-12-24 14:01:03,673 INFO L138 Inliner]: procedures = 39, calls = 131, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 396 [2023-12-24 14:01:03,674 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 14:01:03,674 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 14:01:03,674 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 14:01:03,675 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 14:01:03,682 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:01:03" (1/1) ... [2023-12-24 14:01:03,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:01:03" (1/1) ... [2023-12-24 14:01:03,692 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:01:03" (1/1) ... [2023-12-24 14:01:03,707 INFO L175 MemorySlicer]: Split 103 memory accesses to 7 slices as follows [2, 13, 18, 8, 45, 11, 6]. 44 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 2, 2, 1, 4, 1, 1]. The 15 writes are split as follows [0, 2, 2, 1, 5, 3, 2]. [2023-12-24 14:01:03,708 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:01:03" (1/1) ... [2023-12-24 14:01:03,708 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:01:03" (1/1) ... [2023-12-24 14:01:03,725 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:01:03" (1/1) ... [2023-12-24 14:01:03,728 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:01:03" (1/1) ... [2023-12-24 14:01:03,731 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:01:03" (1/1) ... [2023-12-24 14:01:03,733 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:01:03" (1/1) ... [2023-12-24 14:01:03,739 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 14:01:03,739 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 14:01:03,739 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 14:01:03,739 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 14:01:03,741 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:01:03" (1/1) ... [2023-12-24 14:01:03,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 14:01:03,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 14:01:03,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 14:01:03,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 14:01:03,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 14:01:03,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2023-12-24 14:01:03,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2023-12-24 14:01:03,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2023-12-24 14:01:03,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2023-12-24 14:01:03,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#4 [2023-12-24 14:01:03,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#5 [2023-12-24 14:01:03,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#6 [2023-12-24 14:01:03,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2023-12-24 14:01:03,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2023-12-24 14:01:03,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2023-12-24 14:01:03,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2023-12-24 14:01:03,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#4 [2023-12-24 14:01:03,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#5 [2023-12-24 14:01:03,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#6 [2023-12-24 14:01:03,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 14:01:03,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 14:01:03,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 14:01:03,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 14:01:03,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 14:01:03,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 14:01:03,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-24 14:01:03,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 14:01:03,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 14:01:03,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 14:01:03,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 14:01:03,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 14:01:03,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-24 14:01:03,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#6 [2023-12-24 14:01:03,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 14:01:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 14:01:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 14:01:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 14:01:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 14:01:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 14:01:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-24 14:01:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 14:01:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 14:01:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-24 14:01:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-24 14:01:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-24 14:01:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-24 14:01:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2023-12-24 14:01:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 14:01:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 14:01:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2023-12-24 14:01:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2023-12-24 14:01:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2023-12-24 14:01:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#5 [2023-12-24 14:01:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#6 [2023-12-24 14:01:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2023-12-24 14:01:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2023-12-24 14:01:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#2 [2023-12-24 14:01:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#3 [2023-12-24 14:01:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#4 [2023-12-24 14:01:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#5 [2023-12-24 14:01:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#6 [2023-12-24 14:01:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 14:01:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 14:01:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 14:01:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 14:01:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-24 14:01:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-24 14:01:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-12-24 14:01:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 14:01:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 14:01:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 14:01:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 14:01:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 14:01:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-24 14:01:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#6 [2023-12-24 14:01:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 14:01:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 14:01:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2023-12-24 14:01:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2023-12-24 14:01:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2023-12-24 14:01:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#5 [2023-12-24 14:01:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#6 [2023-12-24 14:01:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 14:01:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 14:01:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2023-12-24 14:01:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2023-12-24 14:01:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2023-12-24 14:01:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#5 [2023-12-24 14:01:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#6 [2023-12-24 14:01:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 14:01:03,815 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 14:01:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 14:01:03,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 14:01:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 14:01:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 14:01:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 14:01:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 14:01:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 14:01:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 14:01:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-24 14:01:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 14:01:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 14:01:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 14:01:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 14:01:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 14:01:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-24 14:01:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#6 [2023-12-24 14:01:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 14:01:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 14:01:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 14:01:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 14:01:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-24 14:01:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-24 14:01:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-12-24 14:01:03,958 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 14:01:03,960 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 14:01:04,625 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 14:01:04,684 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 14:01:04,684 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 14:01:04,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 02:01:04 BoogieIcfgContainer [2023-12-24 14:01:04,685 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 14:01:04,686 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 14:01:04,686 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 14:01:04,688 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 14:01:04,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 02:01:03" (1/3) ... [2023-12-24 14:01:04,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b450cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 02:01:04, skipping insertion in model container [2023-12-24 14:01:04,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:01:03" (2/3) ... [2023-12-24 14:01:04,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b450cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 02:01:04, skipping insertion in model container [2023-12-24 14:01:04,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 02:01:04" (3/3) ... [2023-12-24 14:01:04,690 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-79.i [2023-12-24 14:01:04,701 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 14:01:04,701 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 14:01:04,730 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 14:01:04,734 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;@47235754, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 14:01:04,735 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 14:01:04,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 70 states have (on average 1.4714285714285715) internal successors, (103), 71 states have internal predecessors, (103), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-24 14:01:04,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-24 14:01:04,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:01:04,746 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:01:04,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:01:04,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:01:04,749 INFO L85 PathProgramCache]: Analyzing trace with hash 158505908, now seen corresponding path program 1 times [2023-12-24 14:01:04,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:01:04,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917231968] [2023-12-24 14:01:04,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:01:04,759 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:04,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:01:04,761 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:01:04,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 14:01:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:01:05,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 14:01:05,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:01:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-24 14:01:05,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:01:05,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:01:05,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917231968] [2023-12-24 14:01:05,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917231968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:01:05,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:01:05,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 14:01:05,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022197118] [2023-12-24 14:01:05,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:01:05,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 14:01:05,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:01:05,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 14:01:05,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 14:01:05,079 INFO L87 Difference]: Start difference. First operand has 84 states, 70 states have (on average 1.4714285714285715) internal successors, (103), 71 states have internal predecessors, (103), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-24 14:01:05,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:01:05,111 INFO L93 Difference]: Finished difference Result 165 states and 259 transitions. [2023-12-24 14:01:05,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 14:01:05,113 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 95 [2023-12-24 14:01:05,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:01:05,117 INFO L225 Difference]: With dead ends: 165 [2023-12-24 14:01:05,117 INFO L226 Difference]: Without dead ends: 82 [2023-12-24 14:01:05,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 14:01:05,122 INFO L413 NwaCegarLoop]: 116 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, 116 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 14:01:05,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 14:01:05,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-24 14:01:05,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-12-24 14:01:05,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 69 states have (on average 1.4202898550724639) internal successors, (98), 69 states have internal predecessors, (98), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-24 14:01:05,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 120 transitions. [2023-12-24 14:01:05,150 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 120 transitions. Word has length 95 [2023-12-24 14:01:05,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:01:05,150 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 120 transitions. [2023-12-24 14:01:05,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-24 14:01:05,151 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 120 transitions. [2023-12-24 14:01:05,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-24 14:01:05,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:01:05,153 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:01:05,162 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 (2)] Forceful destruction successful, exit code 0 [2023-12-24 14:01:05,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:05,360 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:01:05,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:01:05,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1089816234, now seen corresponding path program 1 times [2023-12-24 14:01:05,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:01:05,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823881632] [2023-12-24 14:01:05,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:01:05,361 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 14:01:05,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:01:05,363 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:01:05,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 14:01:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:01:05,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 14:01:05,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:01:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 14:01:05,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:01:05,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:01:05,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823881632] [2023-12-24 14:01:05,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823881632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:01:05,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:01:05,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 14:01:05,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016442923] [2023-12-24 14:01:05,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:01:05,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 14:01:05,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:01:05,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 14:01:05,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 14:01:05,620 INFO L87 Difference]: Start difference. First operand 82 states and 120 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-24 14:01:05,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:01:05,707 INFO L93 Difference]: Finished difference Result 169 states and 248 transitions. [2023-12-24 14:01:05,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:01:05,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 95 [2023-12-24 14:01:05,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:01:05,710 INFO L225 Difference]: With dead ends: 169 [2023-12-24 14:01:05,710 INFO L226 Difference]: Without dead ends: 88 [2023-12-24 14:01:05,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:01:05,713 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 10 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 14:01:05,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 340 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 14:01:05,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-24 14:01:05,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2023-12-24 14:01:05,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 71 states have (on average 1.408450704225352) internal successors, (100), 71 states have internal predecessors, (100), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-24 14:01:05,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 122 transitions. [2023-12-24 14:01:05,724 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 122 transitions. Word has length 95 [2023-12-24 14:01:05,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:01:05,724 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 122 transitions. [2023-12-24 14:01:05,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-24 14:01:05,724 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 122 transitions. [2023-12-24 14:01:05,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-24 14:01:05,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:01:05,727 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:01:05,733 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 (3)] Ended with exit code 0 [2023-12-24 14:01:05,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:05,934 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:01:05,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:01:05,935 INFO L85 PathProgramCache]: Analyzing trace with hash -2147312984, now seen corresponding path program 1 times [2023-12-24 14:01:05,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:01:05,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254322984] [2023-12-24 14:01:05,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:01:05,935 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:05,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:01:05,937 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:01:05,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 14:01:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:01:06,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 14:01:06,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:01:06,456 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 12 [2023-12-24 14:01:06,493 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 48 proven. 27 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-24 14:01:06,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:01:06,796 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-24 14:01:06,797 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:01:06,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254322984] [2023-12-24 14:01:06,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254322984] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 14:01:06,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:01:06,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-12-24 14:01:06,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431258163] [2023-12-24 14:01:06,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:01:06,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 14:01:06,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:01:06,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 14:01:06,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-24 14:01:06,800 INFO L87 Difference]: Start difference. First operand 84 states and 122 transitions. Second operand has 11 states, 9 states have (on average 6.111111111111111) internal successors, (55), 11 states have internal predecessors, (55), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 2 states have call predecessors, (21), 4 states have call successors, (21) [2023-12-24 14:01:07,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:01:07,061 INFO L93 Difference]: Finished difference Result 173 states and 248 transitions. [2023-12-24 14:01:07,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 14:01:07,062 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.111111111111111) internal successors, (55), 11 states have internal predecessors, (55), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 2 states have call predecessors, (21), 4 states have call successors, (21) Word has length 95 [2023-12-24 14:01:07,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:01:07,063 INFO L225 Difference]: With dead ends: 173 [2023-12-24 14:01:07,063 INFO L226 Difference]: Without dead ends: 90 [2023-12-24 14:01:07,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2023-12-24 14:01:07,064 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 70 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:01:07,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 459 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 14:01:07,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-24 14:01:07,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2023-12-24 14:01:07,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 74 states have (on average 1.3783783783783783) internal successors, (102), 74 states have internal predecessors, (102), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-24 14:01:07,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 124 transitions. [2023-12-24 14:01:07,077 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 124 transitions. Word has length 95 [2023-12-24 14:01:07,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:01:07,078 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 124 transitions. [2023-12-24 14:01:07,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.111111111111111) internal successors, (55), 11 states have internal predecessors, (55), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 2 states have call predecessors, (21), 4 states have call successors, (21) [2023-12-24 14:01:07,078 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 124 transitions. [2023-12-24 14:01:07,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-24 14:01:07,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:01:07,079 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:01:07,088 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 (4)] Forceful destruction successful, exit code 0 [2023-12-24 14:01:07,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:07,286 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:01:07,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:01:07,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1441458919, now seen corresponding path program 1 times [2023-12-24 14:01:07,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:01:07,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811279721] [2023-12-24 14:01:07,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:01:07,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:07,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:01:07,289 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:01:07,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 14:01:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:01:07,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 14:01:07,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:01:07,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 24 [2023-12-24 14:01:07,707 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:07,707 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 35 treesize of output 15 [2023-12-24 14:01:07,728 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 48 proven. 27 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-24 14:01:07,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:01:07,969 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-24 14:01:07,969 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:01:07,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811279721] [2023-12-24 14:01:07,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811279721] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 14:01:07,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:01:07,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-24 14:01:07,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556318369] [2023-12-24 14:01:07,970 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:01:07,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 14:01:07,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:01:07,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 14:01:07,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-12-24 14:01:07,972 INFO L87 Difference]: Start difference. First operand 88 states and 124 transitions. Second operand has 13 states, 11 states have (on average 5.363636363636363) internal successors, (59), 13 states have internal predecessors, (59), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 2 states have call predecessors, (21), 4 states have call successors, (21) [2023-12-24 14:01:08,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:01:08,388 INFO L93 Difference]: Finished difference Result 177 states and 249 transitions. [2023-12-24 14:01:08,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 14:01:08,390 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.363636363636363) internal successors, (59), 13 states have internal predecessors, (59), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 2 states have call predecessors, (21), 4 states have call successors, (21) Word has length 96 [2023-12-24 14:01:08,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:01:08,390 INFO L225 Difference]: With dead ends: 177 [2023-12-24 14:01:08,390 INFO L226 Difference]: Without dead ends: 90 [2023-12-24 14:01:08,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2023-12-24 14:01:08,392 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 174 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:01:08,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 466 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 14:01:08,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-24 14:01:08,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2023-12-24 14:01:08,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 74 states have (on average 1.364864864864865) internal successors, (101), 74 states have internal predecessors, (101), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-24 14:01:08,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 123 transitions. [2023-12-24 14:01:08,399 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 123 transitions. Word has length 96 [2023-12-24 14:01:08,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:01:08,399 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 123 transitions. [2023-12-24 14:01:08,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.363636363636363) internal successors, (59), 13 states have internal predecessors, (59), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 2 states have call predecessors, (21), 4 states have call successors, (21) [2023-12-24 14:01:08,399 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 123 transitions. [2023-12-24 14:01:08,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-24 14:01:08,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:01:08,409 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:01:08,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 14:01:08,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:08,616 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:01:08,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:01:08,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1836206708, now seen corresponding path program 1 times [2023-12-24 14:01:08,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:01:08,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528828588] [2023-12-24 14:01:08,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:01:08,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:08,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:01:08,618 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:01:08,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 14:01:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:01:08,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 14:01:08,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:01:08,842 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 14:01:08,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:01:08,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:01:08,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528828588] [2023-12-24 14:01:08,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528828588] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:01:08,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:01:08,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 14:01:08,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476095680] [2023-12-24 14:01:08,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:01:08,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:01:08,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:01:08,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:01:08,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:01:08,844 INFO L87 Difference]: Start difference. First operand 88 states and 123 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:01:08,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:01:08,894 INFO L93 Difference]: Finished difference Result 184 states and 257 transitions. [2023-12-24 14:01:08,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 14:01:08,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 98 [2023-12-24 14:01:08,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:01:08,896 INFO L225 Difference]: With dead ends: 184 [2023-12-24 14:01:08,896 INFO L226 Difference]: Without dead ends: 97 [2023-12-24 14:01:08,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 14:01:08,897 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 10 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 432 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 14:01:08,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 432 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 14:01:08,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-24 14:01:08,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 92. [2023-12-24 14:01:08,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 78 states have (on average 1.3461538461538463) internal successors, (105), 78 states have internal predecessors, (105), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-24 14:01:08,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 127 transitions. [2023-12-24 14:01:08,904 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 127 transitions. Word has length 98 [2023-12-24 14:01:08,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:01:08,904 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 127 transitions. [2023-12-24 14:01:08,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:01:08,905 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 127 transitions. [2023-12-24 14:01:08,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-24 14:01:08,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:01:08,910 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:01:08,936 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 14:01:09,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:09,117 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:01:09,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:01:09,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1836147126, now seen corresponding path program 1 times [2023-12-24 14:01:09,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:01:09,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823984136] [2023-12-24 14:01:09,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:01:09,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:09,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:01:09,119 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:01:09,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 14:01:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:01:09,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 14:01:09,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:01:09,419 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 14 treesize of output 10 [2023-12-24 14:01:09,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 39 [2023-12-24 14:01:09,800 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:09,801 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 110 treesize of output 56 [2023-12-24 14:01:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 14:01:09,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:01:09,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:01:09,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823984136] [2023-12-24 14:01:09,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823984136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:01:09,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:01:09,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-24 14:01:09,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312969882] [2023-12-24 14:01:09,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:01:09,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-24 14:01:09,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:01:09,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-24 14:01:09,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-12-24 14:01:09,866 INFO L87 Difference]: Start difference. First operand 92 states and 127 transitions. Second operand has 15 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-24 14:01:11,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:01:11,608 INFO L93 Difference]: Finished difference Result 290 states and 392 transitions. [2023-12-24 14:01:11,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-24 14:01:11,609 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 98 [2023-12-24 14:01:11,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:01:11,610 INFO L225 Difference]: With dead ends: 290 [2023-12-24 14:01:11,610 INFO L226 Difference]: Without dead ends: 199 [2023-12-24 14:01:11,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2023-12-24 14:01:11,611 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 328 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:01:11,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 943 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 14:01:11,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-12-24 14:01:11,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 106. [2023-12-24 14:01:11,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 90 states have (on average 1.3111111111111111) internal successors, (118), 90 states have internal predecessors, (118), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-24 14:01:11,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 140 transitions. [2023-12-24 14:01:11,631 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 140 transitions. Word has length 98 [2023-12-24 14:01:11,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:01:11,631 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 140 transitions. [2023-12-24 14:01:11,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-24 14:01:11,631 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 140 transitions. [2023-12-24 14:01:11,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-24 14:01:11,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:01:11,632 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:01:11,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 14:01:11,843 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 14:01:11,843 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:01:11,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:01:11,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1750458576, now seen corresponding path program 1 times [2023-12-24 14:01:11,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:01:11,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798455937] [2023-12-24 14:01:11,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:01:11,844 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:11,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:01:11,856 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 14:01:11,856 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 14:01:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:01:12,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 14:01:12,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:01:12,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 24 [2023-12-24 14:01:12,328 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:12,328 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 35 treesize of output 15 [2023-12-24 14:01:12,352 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 48 proven. 27 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-24 14:01:12,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:01:12,600 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-24 14:01:12,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:01:12,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798455937] [2023-12-24 14:01:12,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798455937] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 14:01:12,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:01:12,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-24 14:01:12,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960320158] [2023-12-24 14:01:12,601 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:01:12,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 14:01:12,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:01:12,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 14:01:12,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-12-24 14:01:12,602 INFO L87 Difference]: Start difference. First operand 106 states and 140 transitions. Second operand has 13 states, 11 states have (on average 5.818181818181818) internal successors, (64), 13 states have internal predecessors, (64), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 2 states have call predecessors, (21), 4 states have call successors, (21) [2023-12-24 14:01:12,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:01:12,885 INFO L93 Difference]: Finished difference Result 211 states and 278 transitions. [2023-12-24 14:01:12,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 14:01:12,885 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.818181818181818) internal successors, (64), 13 states have internal predecessors, (64), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 2 states have call predecessors, (21), 4 states have call successors, (21) Word has length 100 [2023-12-24 14:01:12,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:01:12,886 INFO L225 Difference]: With dead ends: 211 [2023-12-24 14:01:12,886 INFO L226 Difference]: Without dead ends: 106 [2023-12-24 14:01:12,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2023-12-24 14:01:12,887 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 329 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:01:12,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 445 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 14:01:12,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-24 14:01:12,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2023-12-24 14:01:12,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 88 states have (on average 1.2840909090909092) internal successors, (113), 88 states have internal predecessors, (113), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-24 14:01:12,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 135 transitions. [2023-12-24 14:01:12,894 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 135 transitions. Word has length 100 [2023-12-24 14:01:12,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:01:12,895 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 135 transitions. [2023-12-24 14:01:12,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.818181818181818) internal successors, (64), 13 states have internal predecessors, (64), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 2 states have call predecessors, (21), 4 states have call successors, (21) [2023-12-24 14:01:12,895 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 135 transitions. [2023-12-24 14:01:12,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-24 14:01:12,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:01:12,896 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:01:12,903 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 14:01:13,096 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 14:01:13,096 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:01:13,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:01:13,097 INFO L85 PathProgramCache]: Analyzing trace with hash 897133028, now seen corresponding path program 1 times [2023-12-24 14:01:13,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:01:13,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075057827] [2023-12-24 14:01:13,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:01:13,097 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:13,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:01:13,099 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:01:13,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 14:01:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:01:13,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 14:01:13,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:01:13,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 24 [2023-12-24 14:01:13,552 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:13,552 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 35 treesize of output 15 [2023-12-24 14:01:13,570 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 48 proven. 27 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-24 14:01:13,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:01:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-24 14:01:13,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:01:13,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075057827] [2023-12-24 14:01:13,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075057827] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 14:01:13,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:01:13,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-24 14:01:13,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419237923] [2023-12-24 14:01:13,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:01:13,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 14:01:13,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:01:13,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 14:01:13,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-12-24 14:01:13,766 INFO L87 Difference]: Start difference. First operand 104 states and 135 transitions. Second operand has 13 states, 11 states have (on average 5.545454545454546) internal successors, (61), 13 states have internal predecessors, (61), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 2 states have call predecessors, (21), 4 states have call successors, (21) [2023-12-24 14:01:14,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:01:14,062 INFO L93 Difference]: Finished difference Result 199 states and 259 transitions. [2023-12-24 14:01:14,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 14:01:14,062 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.545454545454546) internal successors, (61), 13 states have internal predecessors, (61), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 2 states have call predecessors, (21), 4 states have call successors, (21) Word has length 100 [2023-12-24 14:01:14,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:01:14,063 INFO L225 Difference]: With dead ends: 199 [2023-12-24 14:01:14,063 INFO L226 Difference]: Without dead ends: 96 [2023-12-24 14:01:14,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2023-12-24 14:01:14,064 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 170 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:01:14,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 445 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 14:01:14,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-24 14:01:14,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2023-12-24 14:01:14,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 78 states have (on average 1.2820512820512822) internal successors, (100), 78 states have internal predecessors, (100), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-24 14:01:14,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 122 transitions. [2023-12-24 14:01:14,071 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 122 transitions. Word has length 100 [2023-12-24 14:01:14,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:01:14,071 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 122 transitions. [2023-12-24 14:01:14,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.545454545454546) internal successors, (61), 13 states have internal predecessors, (61), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 2 states have call predecessors, (21), 4 states have call successors, (21) [2023-12-24 14:01:14,071 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 122 transitions. [2023-12-24 14:01:14,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-24 14:01:14,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:01:14,072 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:01:14,080 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 14:01:14,278 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 14:01:14,278 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:01:14,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:01:14,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1101912901, now seen corresponding path program 1 times [2023-12-24 14:01:14,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:01:14,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489501838] [2023-12-24 14:01:14,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:01:14,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:14,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:01:14,280 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 14:01:14,282 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 14:01:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:01:14,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 14:01:14,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:01:14,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:01:14,573 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 1 [2023-12-24 14:01:14,576 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 14 treesize of output 10 [2023-12-24 14:01:14,628 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 14:01:14,673 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:14,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 43 treesize of output 30 [2023-12-24 14:01:14,749 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 14:01:14,749 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:01:14,749 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:01:14,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489501838] [2023-12-24 14:01:14,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489501838] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:01:14,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:01:14,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 14:01:14,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833275641] [2023-12-24 14:01:14,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:01:14,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 14:01:14,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:01:14,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 14:01:14,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-24 14:01:14,751 INFO L87 Difference]: Start difference. First operand 94 states and 122 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-24 14:01:15,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:01:15,458 INFO L93 Difference]: Finished difference Result 266 states and 347 transitions. [2023-12-24 14:01:15,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 14:01:15,459 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 102 [2023-12-24 14:01:15,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:01:15,460 INFO L225 Difference]: With dead ends: 266 [2023-12-24 14:01:15,460 INFO L226 Difference]: Without dead ends: 173 [2023-12-24 14:01:15,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-24 14:01:15,461 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 240 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 14:01:15,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 555 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 14:01:15,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-24 14:01:15,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 163. [2023-12-24 14:01:15,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 140 states have (on average 1.292857142857143) internal successors, (181), 141 states have internal predecessors, (181), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 14:01:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 213 transitions. [2023-12-24 14:01:15,472 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 213 transitions. Word has length 102 [2023-12-24 14:01:15,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:01:15,472 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 213 transitions. [2023-12-24 14:01:15,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-24 14:01:15,472 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 213 transitions. [2023-12-24 14:01:15,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-24 14:01:15,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:01:15,473 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:01:15,480 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 14:01:15,680 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 14:01:15,680 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:01:15,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:01:15,680 INFO L85 PathProgramCache]: Analyzing trace with hash 110647797, now seen corresponding path program 1 times [2023-12-24 14:01:15,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:01:15,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327016390] [2023-12-24 14:01:15,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:01:15,681 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:15,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:01:15,682 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:01:15,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 14:01:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:01:15,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 14:01:15,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:01:16,002 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 17 treesize of output 9 [2023-12-24 14:01:16,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:01:16,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 14:01:16,238 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:16,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 39 treesize of output 26 [2023-12-24 14:01:16,399 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:16,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 50 treesize of output 33 [2023-12-24 14:01:16,445 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:16,445 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 39 treesize of output 21 [2023-12-24 14:01:16,470 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 136 proven. 15 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-24 14:01:16,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:01:16,545 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 14:01:16,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:01:16,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327016390] [2023-12-24 14:01:16,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327016390] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:01:16,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:01:16,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2023-12-24 14:01:16,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201826124] [2023-12-24 14:01:16,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:01:16,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:01:16,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:01:16,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:01:16,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-24 14:01:16,547 INFO L87 Difference]: Start difference. First operand 163 states and 213 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, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:01:16,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:01:16,895 INFO L93 Difference]: Finished difference Result 432 states and 565 transitions. [2023-12-24 14:01:16,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 14:01:16,897 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, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 103 [2023-12-24 14:01:16,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:01:16,899 INFO L225 Difference]: With dead ends: 432 [2023-12-24 14:01:16,899 INFO L226 Difference]: Without dead ends: 270 [2023-12-24 14:01:16,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-12-24 14:01:16,900 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 102 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:01:16,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 256 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 14:01:16,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-24 14:01:16,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 192. [2023-12-24 14:01:16,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 169 states have (on average 1.2781065088757397) internal successors, (216), 170 states have internal predecessors, (216), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 14:01:16,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 248 transitions. [2023-12-24 14:01:16,930 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 248 transitions. Word has length 103 [2023-12-24 14:01:16,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:01:16,930 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 248 transitions. [2023-12-24 14:01:16,930 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, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:01:16,931 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 248 transitions. [2023-12-24 14:01:16,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-24 14:01:16,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:01:16,931 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:01:16,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-24 14:01:17,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:17,138 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:01:17,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:01:17,139 INFO L85 PathProgramCache]: Analyzing trace with hash 811712375, now seen corresponding path program 1 times [2023-12-24 14:01:17,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:01:17,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973410220] [2023-12-24 14:01:17,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:01:17,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:17,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:01:17,140 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:01:17,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 14:01:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:01:17,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 14:01:17,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:01:17,442 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 17 treesize of output 9 [2023-12-24 14:01:17,491 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 14 treesize of output 10 [2023-12-24 14:01:17,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 14:01:18,145 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:18,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 65 treesize of output 40 [2023-12-24 14:01:18,691 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:18,692 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 66 treesize of output 30 [2023-12-24 14:01:18,826 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-24 14:01:18,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:01:18,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:01:18,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973410220] [2023-12-24 14:01:18,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973410220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:01:18,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:01:18,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 14:01:18,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265521105] [2023-12-24 14:01:18,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:01:18,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 14:01:18,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:01:18,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 14:01:18,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-24 14:01:18,828 INFO L87 Difference]: Start difference. First operand 192 states and 248 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-24 14:01:21,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:01:21,765 INFO L93 Difference]: Finished difference Result 833 states and 1070 transitions. [2023-12-24 14:01:21,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 14:01:21,765 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 103 [2023-12-24 14:01:21,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:01:21,768 INFO L225 Difference]: With dead ends: 833 [2023-12-24 14:01:21,768 INFO L226 Difference]: Without dead ends: 642 [2023-12-24 14:01:21,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-12-24 14:01:21,769 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 416 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:01:21,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 769 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-24 14:01:21,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2023-12-24 14:01:21,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 525. [2023-12-24 14:01:21,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 464 states have (on average 1.2650862068965518) internal successors, (587), 468 states have internal predecessors, (587), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (44), 40 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 14:01:21,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 675 transitions. [2023-12-24 14:01:21,825 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 675 transitions. Word has length 103 [2023-12-24 14:01:21,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:01:21,825 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 675 transitions. [2023-12-24 14:01:21,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-24 14:01:21,825 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 675 transitions. [2023-12-24 14:01:21,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-24 14:01:21,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:01:21,826 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:01:21,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-24 14:01:22,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:22,036 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:01:22,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:01:22,037 INFO L85 PathProgramCache]: Analyzing trace with hash 48608183, now seen corresponding path program 1 times [2023-12-24 14:01:22,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:01:22,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344449174] [2023-12-24 14:01:22,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:01:22,038 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 14:01:22,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:01:22,039 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:01:22,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 14:01:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:01:22,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 14:01:22,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:01:22,392 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 17 treesize of output 9 [2023-12-24 14:01:22,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:01:22,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-24 14:01:22,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 14:01:23,121 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:23,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 49 [2023-12-24 14:01:23,809 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:23,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 38 [2023-12-24 14:01:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 144 proven. 15 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-24 14:01:24,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:01:25,953 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 14:01:25,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:01:25,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344449174] [2023-12-24 14:01:25,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344449174] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:01:25,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:01:25,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 21 [2023-12-24 14:01:25,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960079764] [2023-12-24 14:01:25,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:01:25,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 14:01:25,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:01:25,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 14:01:25,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2023-12-24 14:01:25,955 INFO L87 Difference]: Start difference. First operand 525 states and 675 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:01:30,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:01:30,695 INFO L93 Difference]: Finished difference Result 1320 states and 1711 transitions. [2023-12-24 14:01:30,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 14:01:30,701 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 103 [2023-12-24 14:01:30,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:01:30,703 INFO L225 Difference]: With dead ends: 1320 [2023-12-24 14:01:30,703 INFO L226 Difference]: Without dead ends: 796 [2023-12-24 14:01:30,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2023-12-24 14:01:30,705 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 184 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-24 14:01:30,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 599 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-24 14:01:30,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2023-12-24 14:01:30,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 554. [2023-12-24 14:01:30,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 493 states have (on average 1.2596348884381339) internal successors, (621), 497 states have internal predecessors, (621), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (44), 40 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 14:01:30,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 709 transitions. [2023-12-24 14:01:30,733 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 709 transitions. Word has length 103 [2023-12-24 14:01:30,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:01:30,733 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 709 transitions. [2023-12-24 14:01:30,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:01:30,733 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 709 transitions. [2023-12-24 14:01:30,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-24 14:01:30,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:01:30,734 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:01:30,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-24 14:01:30,941 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 14:01:30,941 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:01:30,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:01:30,941 INFO L85 PathProgramCache]: Analyzing trace with hash 749672761, now seen corresponding path program 1 times [2023-12-24 14:01:30,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:01:30,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091028030] [2023-12-24 14:01:30,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:01:30,942 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:30,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:01:30,943 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 14:01:30,960 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 14:01:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:01:31,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 14:01:31,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:01:31,273 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 17 treesize of output 9 [2023-12-24 14:01:31,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:01:31,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 14:01:31,486 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:31,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 36 [2023-12-24 14:01:32,416 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:32,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 54 [2023-12-24 14:01:33,100 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 152 proven. 15 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-24 14:01:33,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:01:35,503 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 14:01:35,504 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:01:35,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091028030] [2023-12-24 14:01:35,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091028030] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:01:35,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:01:35,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 22 [2023-12-24 14:01:35,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364010794] [2023-12-24 14:01:35,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:01:35,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 14:01:35,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:01:35,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 14:01:35,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2023-12-24 14:01:35,505 INFO L87 Difference]: Start difference. First operand 554 states and 709 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, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:01:41,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:01:41,501 INFO L93 Difference]: Finished difference Result 1287 states and 1656 transitions. [2023-12-24 14:01:41,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 14:01:41,507 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, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 103 [2023-12-24 14:01:41,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:01:41,511 INFO L225 Difference]: With dead ends: 1287 [2023-12-24 14:01:41,511 INFO L226 Difference]: Without dead ends: 734 [2023-12-24 14:01:41,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2023-12-24 14:01:41,515 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 156 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-24 14:01:41,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 772 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-24 14:01:41,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2023-12-24 14:01:41,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 541. [2023-12-24 14:01:41,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 480 states have (on average 1.2625) internal successors, (606), 484 states have internal predecessors, (606), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (44), 40 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 14:01:41,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 694 transitions. [2023-12-24 14:01:41,556 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 694 transitions. Word has length 103 [2023-12-24 14:01:41,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:01:41,556 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 694 transitions. [2023-12-24 14:01:41,556 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, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:01:41,556 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 694 transitions. [2023-12-24 14:01:41,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-24 14:01:41,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:01:41,557 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:01:41,569 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 (14)] Forceful destruction successful, exit code 0 [2023-12-24 14:01:41,766 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 14:01:41,766 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:01:41,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:01:41,767 INFO L85 PathProgramCache]: Analyzing trace with hash 336044120, now seen corresponding path program 1 times [2023-12-24 14:01:41,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:01:41,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628751958] [2023-12-24 14:01:41,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:01:41,767 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:41,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:01:41,770 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:01:41,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-24 14:01:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:01:42,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 14:01:42,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:01:42,063 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 17 treesize of output 9 [2023-12-24 14:01:42,125 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 1 [2023-12-24 14:01:42,141 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 14 treesize of output 10 [2023-12-24 14:01:42,543 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:42,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 56 treesize of output 37 [2023-12-24 14:01:42,925 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:42,925 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 57 treesize of output 27 [2023-12-24 14:01:43,046 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 14:01:43,046 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:01:43,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:01:43,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628751958] [2023-12-24 14:01:43,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628751958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:01:43,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:01:43,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 14:01:43,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830479975] [2023-12-24 14:01:43,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:01:43,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 14:01:43,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:01:43,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 14:01:43,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-24 14:01:43,047 INFO L87 Difference]: Start difference. First operand 541 states and 694 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-24 14:01:45,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:01:45,773 INFO L93 Difference]: Finished difference Result 1271 states and 1618 transitions. [2023-12-24 14:01:45,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 14:01:45,773 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2023-12-24 14:01:45,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:01:45,775 INFO L225 Difference]: With dead ends: 1271 [2023-12-24 14:01:45,775 INFO L226 Difference]: Without dead ends: 731 [2023-12-24 14:01:45,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-12-24 14:01:45,776 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 369 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-24 14:01:45,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 774 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-24 14:01:45,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2023-12-24 14:01:45,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 611. [2023-12-24 14:01:45,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 540 states have (on average 1.2592592592592593) internal successors, (680), 545 states have internal predecessors, (680), 51 states have call successors, (51), 19 states have call predecessors, (51), 19 states have return successors, (51), 46 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 14:01:45,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 782 transitions. [2023-12-24 14:01:45,809 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 782 transitions. Word has length 104 [2023-12-24 14:01:45,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:01:45,809 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 782 transitions. [2023-12-24 14:01:45,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-24 14:01:45,809 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 782 transitions. [2023-12-24 14:01:45,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-24 14:01:45,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:01:45,810 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:01:45,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-24 14:01:46,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:46,017 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:01:46,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:01:46,017 INFO L85 PathProgramCache]: Analyzing trace with hash -2118384883, now seen corresponding path program 1 times [2023-12-24 14:01:46,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:01:46,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8861850] [2023-12-24 14:01:46,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:01:46,018 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 14:01:46,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:01:46,019 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:01:46,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-24 14:01:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:01:46,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 14:01:46,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:01:46,337 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 1 [2023-12-24 14:01:46,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 24 [2023-12-24 14:01:46,610 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:46,610 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 68 treesize of output 32 [2023-12-24 14:01:46,634 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 48 proven. 27 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-24 14:01:46,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:01:46,772 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 14:01:46,772 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:01:46,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8861850] [2023-12-24 14:01:46,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [8861850] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:01:46,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:01:46,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2023-12-24 14:01:46,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432469013] [2023-12-24 14:01:46,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:01:46,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:01:46,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:01:46,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:01:46,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-24 14:01:46,773 INFO L87 Difference]: Start difference. First operand 611 states and 782 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:01:46,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:01:46,857 INFO L93 Difference]: Finished difference Result 627 states and 804 transitions. [2023-12-24 14:01:46,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:01:46,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 104 [2023-12-24 14:01:46,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:01:46,860 INFO L225 Difference]: With dead ends: 627 [2023-12-24 14:01:46,860 INFO L226 Difference]: Without dead ends: 625 [2023-12-24 14:01:46,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-24 14:01:46,860 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 20 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 14:01:46,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 366 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 14:01:46,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2023-12-24 14:01:46,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 625. [2023-12-24 14:01:46,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 554 states have (on average 1.2527075812274369) internal successors, (694), 559 states have internal predecessors, (694), 51 states have call successors, (51), 19 states have call predecessors, (51), 19 states have return successors, (51), 46 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 14:01:46,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 796 transitions. [2023-12-24 14:01:46,890 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 796 transitions. Word has length 104 [2023-12-24 14:01:46,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:01:46,890 INFO L495 AbstractCegarLoop]: Abstraction has 625 states and 796 transitions. [2023-12-24 14:01:46,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:01:46,890 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 796 transitions. [2023-12-24 14:01:46,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-24 14:01:46,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:01:46,891 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:01:46,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 14:01:47,098 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 14:01:47,098 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:01:47,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:01:47,099 INFO L85 PathProgramCache]: Analyzing trace with hash -2118325301, now seen corresponding path program 1 times [2023-12-24 14:01:47,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:01:47,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404592385] [2023-12-24 14:01:47,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:01:47,099 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:47,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:01:47,100 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 14:01:47,103 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 14:01:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:01:47,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 14:01:47,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:01:47,340 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 14:01:47,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:01:47,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:01:47,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404592385] [2023-12-24 14:01:47,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404592385] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:01:47,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:01:47,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 14:01:47,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045723016] [2023-12-24 14:01:47,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:01:47,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:01:47,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:01:47,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:01:47,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:01:47,341 INFO L87 Difference]: Start difference. First operand 625 states and 796 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:01:47,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:01:47,411 INFO L93 Difference]: Finished difference Result 1277 states and 1626 transitions. [2023-12-24 14:01:47,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:01:47,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 104 [2023-12-24 14:01:47,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:01:47,422 INFO L225 Difference]: With dead ends: 1277 [2023-12-24 14:01:47,422 INFO L226 Difference]: Without dead ends: 653 [2023-12-24 14:01:47,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 14:01:47,423 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 10 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 14:01:47,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 397 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 14:01:47,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2023-12-24 14:01:47,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 646. [2023-12-24 14:01:47,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 575 states have (on average 1.2434782608695651) internal successors, (715), 580 states have internal predecessors, (715), 51 states have call successors, (51), 19 states have call predecessors, (51), 19 states have return successors, (51), 46 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 14:01:47,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 817 transitions. [2023-12-24 14:01:47,453 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 817 transitions. Word has length 104 [2023-12-24 14:01:47,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:01:47,453 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 817 transitions. [2023-12-24 14:01:47,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:01:47,454 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 817 transitions. [2023-12-24 14:01:47,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-24 14:01:47,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:01:47,454 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:01:47,461 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 14:01:47,661 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 14:01:47,661 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:01:47,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:01:47,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1000377900, now seen corresponding path program 1 times [2023-12-24 14:01:47,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:01:47,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345419150] [2023-12-24 14:01:47,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:01:47,662 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:47,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:01:47,663 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:01:47,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-24 14:01:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:01:48,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 14:01:48,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:01:48,049 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 17 treesize of output 9 [2023-12-24 14:01:48,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:01:48,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 14:01:48,440 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:48,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 50 treesize of output 31 [2023-12-24 14:01:49,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:49,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 55 [2023-12-24 14:01:49,929 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:49,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 44 [2023-12-24 14:01:50,176 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 142 proven. 21 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-24 14:01:50,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:01:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 14:01:52,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:01:52,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345419150] [2023-12-24 14:01:52,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345419150] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:01:52,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:01:52,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 25 [2023-12-24 14:01:52,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665474052] [2023-12-24 14:01:52,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:01:52,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 14:01:52,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:01:52,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 14:01:52,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2023-12-24 14:01:52,601 INFO L87 Difference]: Start difference. First operand 646 states and 817 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:01:56,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:01:56,557 INFO L93 Difference]: Finished difference Result 1471 states and 1858 transitions. [2023-12-24 14:01:56,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 14:01:56,561 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 104 [2023-12-24 14:01:56,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:01:56,565 INFO L225 Difference]: With dead ends: 1471 [2023-12-24 14:01:56,565 INFO L226 Difference]: Without dead ends: 826 [2023-12-24 14:01:56,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 181 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=145, Invalid=667, Unknown=0, NotChecked=0, Total=812 [2023-12-24 14:01:56,567 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 160 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:01:56,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 480 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-24 14:01:56,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2023-12-24 14:01:56,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 648. [2023-12-24 14:01:56,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 577 states have (on average 1.24263431542461) internal successors, (717), 582 states have internal predecessors, (717), 51 states have call successors, (51), 19 states have call predecessors, (51), 19 states have return successors, (51), 46 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 14:01:56,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 819 transitions. [2023-12-24 14:01:56,598 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 819 transitions. Word has length 104 [2023-12-24 14:01:56,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:01:56,598 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 819 transitions. [2023-12-24 14:01:56,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:01:56,598 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 819 transitions. [2023-12-24 14:01:56,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-24 14:01:56,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:01:56,599 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:01:56,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-24 14:01:56,800 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 14:01:56,800 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:01:56,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:01:56,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1587183914, now seen corresponding path program 1 times [2023-12-24 14:01:56,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:01:56,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281149132] [2023-12-24 14:01:56,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:01:56,801 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:56,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:01:56,802 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 14:01:56,804 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 14:01:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:01:57,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 14:01:57,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:01:57,161 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 17 treesize of output 9 [2023-12-24 14:01:57,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:01:57,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 14:01:57,374 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:57,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 39 treesize of output 26 [2023-12-24 14:01:57,561 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:57,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 40 treesize of output 27 [2023-12-24 14:01:57,598 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:57,598 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 29 treesize of output 15 [2023-12-24 14:01:57,624 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 136 proven. 15 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-24 14:01:57,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:01:57,720 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 14:01:57,721 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:01:57,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281149132] [2023-12-24 14:01:57,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281149132] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:01:57,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:01:57,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2023-12-24 14:01:57,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108763388] [2023-12-24 14:01:57,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:01:57,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:01:57,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:01:57,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:01:57,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-24 14:01:57,722 INFO L87 Difference]: Start difference. First operand 648 states and 819 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:01:58,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:01:58,090 INFO L93 Difference]: Finished difference Result 1349 states and 1701 transitions. [2023-12-24 14:01:58,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:01:58,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 104 [2023-12-24 14:01:58,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:01:58,095 INFO L225 Difference]: With dead ends: 1349 [2023-12-24 14:01:58,095 INFO L226 Difference]: Without dead ends: 702 [2023-12-24 14:01:58,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-12-24 14:01:58,117 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 53 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:01:58,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 380 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 14:01:58,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2023-12-24 14:01:58,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 646. [2023-12-24 14:01:58,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 575 states have (on average 1.231304347826087) internal successors, (708), 580 states have internal predecessors, (708), 51 states have call successors, (51), 19 states have call predecessors, (51), 19 states have return successors, (51), 46 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 14:01:58,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 810 transitions. [2023-12-24 14:01:58,150 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 810 transitions. Word has length 104 [2023-12-24 14:01:58,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:01:58,150 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 810 transitions. [2023-12-24 14:01:58,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:01:58,150 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 810 transitions. [2023-12-24 14:01:58,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-24 14:01:58,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:01:58,151 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:01:58,174 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 14:01:58,357 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 14:01:58,357 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:01:58,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:01:58,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1670737682, now seen corresponding path program 1 times [2023-12-24 14:01:58,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:01:58,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542985941] [2023-12-24 14:01:58,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:01:58,358 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:01:58,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:01:58,359 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:01:58,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-24 14:01:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:01:58,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 14:01:58,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:01:58,694 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 1 [2023-12-24 14:01:58,695 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 14 treesize of output 10 [2023-12-24 14:01:58,749 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 14:01:58,799 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:01:58,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 32 [2023-12-24 14:01:58,907 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 14:01:58,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:01:58,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:01:58,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542985941] [2023-12-24 14:01:58,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542985941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:01:58,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:01:58,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 14:01:58,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585682210] [2023-12-24 14:01:58,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:01:58,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 14:01:58,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:01:58,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 14:01:58,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-24 14:01:58,909 INFO L87 Difference]: Start difference. First operand 646 states and 810 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-24 14:01:59,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:01:59,813 INFO L93 Difference]: Finished difference Result 1395 states and 1750 transitions. [2023-12-24 14:01:59,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 14:01:59,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2023-12-24 14:01:59,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:01:59,817 INFO L225 Difference]: With dead ends: 1395 [2023-12-24 14:01:59,817 INFO L226 Difference]: Without dead ends: 750 [2023-12-24 14:01:59,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-12-24 14:01:59,818 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 236 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 14:01:59,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 734 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 14:01:59,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2023-12-24 14:01:59,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 608. [2023-12-24 14:01:59,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 540 states have (on average 1.2185185185185186) internal successors, (658), 544 states have internal predecessors, (658), 48 states have call successors, (48), 19 states have call predecessors, (48), 19 states have return successors, (48), 44 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 14:01:59,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 754 transitions. [2023-12-24 14:01:59,852 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 754 transitions. Word has length 105 [2023-12-24 14:01:59,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:01:59,852 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 754 transitions. [2023-12-24 14:01:59,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-24 14:01:59,852 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 754 transitions. [2023-12-24 14:01:59,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-24 14:01:59,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:01:59,853 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:01:59,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-24 14:02:00,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:02:00,060 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:02:00,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:02:00,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1277710672, now seen corresponding path program 1 times [2023-12-24 14:02:00,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:02:00,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506274330] [2023-12-24 14:02:00,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:02:00,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:02:00,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:02:00,062 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:02:00,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-24 14:02:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:02:00,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 14:02:00,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:02:01,328 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:02:01,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 303 treesize of output 99 [2023-12-24 14:02:01,424 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-24 14:02:01,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:02:01,895 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 14:02:01,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:02:01,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506274330] [2023-12-24 14:02:01,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506274330] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:02:01,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:02:01,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-12-24 14:02:01,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530908923] [2023-12-24 14:02:01,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:02:01,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:02:01,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:02:01,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:02:01,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-24 14:02:01,897 INFO L87 Difference]: Start difference. First operand 608 states and 754 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:02:02,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:02:02,447 INFO L93 Difference]: Finished difference Result 1265 states and 1567 transitions. [2023-12-24 14:02:02,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 14:02:02,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 105 [2023-12-24 14:02:02,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:02:02,451 INFO L225 Difference]: With dead ends: 1265 [2023-12-24 14:02:02,451 INFO L226 Difference]: Without dead ends: 658 [2023-12-24 14:02:02,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-24 14:02:02,452 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 59 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 14:02:02,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 468 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 14:02:02,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2023-12-24 14:02:02,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 596. [2023-12-24 14:02:02,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 528 states have (on average 1.2159090909090908) internal successors, (642), 532 states have internal predecessors, (642), 48 states have call successors, (48), 19 states have call predecessors, (48), 19 states have return successors, (48), 44 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 14:02:02,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 738 transitions. [2023-12-24 14:02:02,483 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 738 transitions. Word has length 105 [2023-12-24 14:02:02,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:02:02,483 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 738 transitions. [2023-12-24 14:02:02,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:02:02,483 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 738 transitions. [2023-12-24 14:02:02,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-24 14:02:02,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:02:02,484 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:02:02,498 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 (21)] Ended with exit code 0 [2023-12-24 14:02:02,690 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 14:02:02,690 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:02:02,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:02:02,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1811286292, now seen corresponding path program 1 times [2023-12-24 14:02:02,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:02:02,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034378156] [2023-12-24 14:02:02,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:02:02,691 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:02:02,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:02:02,692 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 14:02:02,725 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 14:02:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:02:02,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 14:02:02,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:02:03,932 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:02:03,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 304 treesize of output 100 [2023-12-24 14:02:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-24 14:02:04,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:02:04,501 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 14:02:04,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:02:04,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034378156] [2023-12-24 14:02:04,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034378156] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:02:04,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:02:04,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-12-24 14:02:04,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075092775] [2023-12-24 14:02:04,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:02:04,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:02:04,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:02:04,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:02:04,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-24 14:02:04,503 INFO L87 Difference]: Start difference. First operand 596 states and 738 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:02:04,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:02:04,901 INFO L93 Difference]: Finished difference Result 1272 states and 1572 transitions. [2023-12-24 14:02:04,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 14:02:04,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 105 [2023-12-24 14:02:04,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:02:04,904 INFO L225 Difference]: With dead ends: 1272 [2023-12-24 14:02:04,904 INFO L226 Difference]: Without dead ends: 677 [2023-12-24 14:02:04,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-24 14:02:04,906 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 93 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:02:04,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 348 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 14:02:04,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2023-12-24 14:02:04,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 597. [2023-12-24 14:02:04,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 529 states have (on average 1.2117202268431002) internal successors, (641), 533 states have internal predecessors, (641), 48 states have call successors, (48), 19 states have call predecessors, (48), 19 states have return successors, (48), 44 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 14:02:04,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 737 transitions. [2023-12-24 14:02:04,953 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 737 transitions. Word has length 105 [2023-12-24 14:02:04,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:02:04,953 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 737 transitions. [2023-12-24 14:02:04,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:02:04,953 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 737 transitions. [2023-12-24 14:02:04,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-24 14:02:04,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:02:04,954 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:02:04,975 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 (22)] Forceful destruction successful, exit code 0 [2023-12-24 14:02:05,168 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 14:02:05,168 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:02:05,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:02:05,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1418259282, now seen corresponding path program 1 times [2023-12-24 14:02:05,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:02:05,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905753176] [2023-12-24 14:02:05,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:02:05,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:02:05,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:02:05,170 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:02:05,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-24 14:02:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:02:05,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 14:02:05,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:02:05,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:02:05,493 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 1 [2023-12-24 14:02:05,494 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 1 [2023-12-24 14:02:05,496 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 14:02:05,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-12-24 14:02:05,559 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 14:02:05,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:02:05,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:02:05,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905753176] [2023-12-24 14:02:05,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905753176] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:02:05,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:02:05,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 14:02:05,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806379441] [2023-12-24 14:02:05,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:02:05,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 14:02:05,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:02:05,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 14:02:05,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 14:02:05,561 INFO L87 Difference]: Start difference. First operand 597 states and 737 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:02:06,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:02:06,286 INFO L93 Difference]: Finished difference Result 1229 states and 1518 transitions. [2023-12-24 14:02:06,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 14:02:06,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 105 [2023-12-24 14:02:06,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:02:06,288 INFO L225 Difference]: With dead ends: 1229 [2023-12-24 14:02:06,288 INFO L226 Difference]: Without dead ends: 633 [2023-12-24 14:02:06,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-24 14:02:06,290 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 140 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 14:02:06,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 742 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 14:02:06,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-12-24 14:02:06,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 591. [2023-12-24 14:02:06,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 523 states have (on average 1.2103250478011471) internal successors, (633), 527 states have internal predecessors, (633), 48 states have call successors, (48), 19 states have call predecessors, (48), 19 states have return successors, (48), 44 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 14:02:06,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 729 transitions. [2023-12-24 14:02:06,340 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 729 transitions. Word has length 105 [2023-12-24 14:02:06,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:02:06,340 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 729 transitions. [2023-12-24 14:02:06,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:02:06,341 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 729 transitions. [2023-12-24 14:02:06,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 14:02:06,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:02:06,342 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:02:06,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-24 14:02:06,548 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 14:02:06,548 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:02:06,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:02:06,549 INFO L85 PathProgramCache]: Analyzing trace with hash -681497786, now seen corresponding path program 1 times [2023-12-24 14:02:06,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:02:06,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968959795] [2023-12-24 14:02:06,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:02:06,549 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:02:06,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:02:06,550 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 14:02:06,584 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 14:02:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:02:06,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 14:02:06,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:02:12,879 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 136 treesize of output 88 [2023-12-24 14:02:12,900 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:02:12,900 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 100 treesize of output 40 [2023-12-24 14:02:14,031 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-12-24 14:02:14,031 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:02:14,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:02:14,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968959795] [2023-12-24 14:02:14,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968959795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:02:14,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:02:14,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 14:02:14,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977055248] [2023-12-24 14:02:14,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:02:14,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 14:02:14,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:02:14,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 14:02:14,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-24 14:02:14,033 INFO L87 Difference]: Start difference. First operand 591 states and 729 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-24 14:02:21,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:02:21,799 INFO L93 Difference]: Finished difference Result 1869 states and 2278 transitions. [2023-12-24 14:02:21,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 14:02:21,801 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 106 [2023-12-24 14:02:21,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:02:21,803 INFO L225 Difference]: With dead ends: 1869 [2023-12-24 14:02:21,803 INFO L226 Difference]: Without dead ends: 1279 [2023-12-24 14:02:21,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-12-24 14:02:21,804 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 213 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-24 14:02:21,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 649 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-24 14:02:21,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2023-12-24 14:02:21,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1212. [2023-12-24 14:02:21,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1077 states have (on average 1.181058495821727) internal successors, (1272), 1091 states have internal predecessors, (1272), 96 states have call successors, (96), 38 states have call predecessors, (96), 38 states have return successors, (96), 82 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-24 14:02:21,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1464 transitions. [2023-12-24 14:02:21,882 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1464 transitions. Word has length 106 [2023-12-24 14:02:21,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:02:21,882 INFO L495 AbstractCegarLoop]: Abstraction has 1212 states and 1464 transitions. [2023-12-24 14:02:21,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-24 14:02:21,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1464 transitions. [2023-12-24 14:02:21,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 14:02:21,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:02:21,884 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:02:21,891 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 14:02:22,091 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 14:02:22,091 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:02:22,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:02:22,091 INFO L85 PathProgramCache]: Analyzing trace with hash 205725060, now seen corresponding path program 1 times [2023-12-24 14:02:22,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:02:22,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059957873] [2023-12-24 14:02:22,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:02:22,092 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:02:22,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:02:22,093 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:02:22,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-24 14:02:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:02:22,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 14:02:22,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:02:22,326 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-12-24 14:02:22,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:02:22,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:02:22,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059957873] [2023-12-24 14:02:22,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059957873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:02:22,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:02:22,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 14:02:22,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649354359] [2023-12-24 14:02:22,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:02:22,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 14:02:22,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:02:22,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 14:02:22,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 14:02:22,327 INFO L87 Difference]: Start difference. First operand 1212 states and 1464 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-24 14:02:22,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:02:22,421 INFO L93 Difference]: Finished difference Result 2446 states and 2962 transitions. [2023-12-24 14:02:22,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:02:22,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 106 [2023-12-24 14:02:22,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:02:22,425 INFO L225 Difference]: With dead ends: 2446 [2023-12-24 14:02:22,425 INFO L226 Difference]: Without dead ends: 1235 [2023-12-24 14:02:22,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:02:22,426 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 7 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 14:02:22,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 312 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 14:02:22,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2023-12-24 14:02:22,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1212. [2023-12-24 14:02:22,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1077 states have (on average 1.1754874651810585) internal successors, (1266), 1091 states have internal predecessors, (1266), 96 states have call successors, (96), 38 states have call predecessors, (96), 38 states have return successors, (96), 82 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-24 14:02:22,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1458 transitions. [2023-12-24 14:02:22,499 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1458 transitions. Word has length 106 [2023-12-24 14:02:22,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:02:22,499 INFO L495 AbstractCegarLoop]: Abstraction has 1212 states and 1458 transitions. [2023-12-24 14:02:22,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-24 14:02:22,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1458 transitions. [2023-12-24 14:02:22,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-24 14:02:22,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:02:22,500 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:02:22,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-24 14:02:22,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:02:22,709 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:02:22,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:02:22,710 INFO L85 PathProgramCache]: Analyzing trace with hash 51403799, now seen corresponding path program 1 times [2023-12-24 14:02:22,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:02:22,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180389930] [2023-12-24 14:02:22,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:02:22,710 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:02:22,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:02:22,711 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:02:22,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-24 14:02:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:02:22,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 14:02:22,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:02:22,985 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 14:02:23,027 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 54 treesize of output 42 [2023-12-24 14:02:23,031 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 14 treesize of output 10 [2023-12-24 14:02:23,181 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 64 treesize of output 44 [2023-12-24 14:02:23,504 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 41 [2023-12-24 14:02:23,508 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 52 treesize of output 40 [2023-12-24 14:02:23,625 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 14:02:23,625 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:02:23,625 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:02:23,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180389930] [2023-12-24 14:02:23,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180389930] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:02:23,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:02:23,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-24 14:02:23,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381693190] [2023-12-24 14:02:23,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:02:23,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 14:02:23,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:02:23,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 14:02:23,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-24 14:02:23,627 INFO L87 Difference]: Start difference. First operand 1212 states and 1458 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:02:27,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:02:27,885 INFO L93 Difference]: Finished difference Result 2103 states and 2514 transitions. [2023-12-24 14:02:27,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 14:02:27,886 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 107 [2023-12-24 14:02:27,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:02:27,889 INFO L225 Difference]: With dead ends: 2103 [2023-12-24 14:02:27,889 INFO L226 Difference]: Without dead ends: 1550 [2023-12-24 14:02:27,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=303, Invalid=887, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 14:02:27,891 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 336 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-24 14:02:27,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 1950 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 819 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2023-12-24 14:02:27,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2023-12-24 14:02:27,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1350. [2023-12-24 14:02:27,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1215 states have (on average 1.1637860082304528) internal successors, (1414), 1229 states have internal predecessors, (1414), 96 states have call successors, (96), 38 states have call predecessors, (96), 38 states have return successors, (96), 82 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-24 14:02:27,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 1606 transitions. [2023-12-24 14:02:27,977 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 1606 transitions. Word has length 107 [2023-12-24 14:02:27,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:02:27,977 INFO L495 AbstractCegarLoop]: Abstraction has 1350 states and 1606 transitions. [2023-12-24 14:02:27,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:02:27,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 1606 transitions. [2023-12-24 14:02:27,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-24 14:02:27,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:02:27,978 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:02:27,985 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 (26)] Ended with exit code 0 [2023-12-24 14:02:28,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:02:28,185 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:02:28,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:02:28,185 INFO L85 PathProgramCache]: Analyzing trace with hash 191952409, now seen corresponding path program 1 times [2023-12-24 14:02:28,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:02:28,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829924147] [2023-12-24 14:02:28,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:02:28,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:02:28,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:02:28,187 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:02:28,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-24 14:02:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:02:28,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 14:02:28,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:02:28,430 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 17 treesize of output 13 [2023-12-24 14:02:28,438 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 29 treesize of output 21 [2023-12-24 14:02:28,924 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 14:02:28,927 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 52 treesize of output 28 [2023-12-24 14:02:29,017 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 14:02:29,017 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:02:29,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:02:29,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829924147] [2023-12-24 14:02:29,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829924147] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:02:29,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:02:29,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 14:02:29,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412012100] [2023-12-24 14:02:29,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:02:29,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 14:02:29,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:02:29,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 14:02:29,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-24 14:02:29,019 INFO L87 Difference]: Start difference. First operand 1350 states and 1606 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:02:31,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:02:31,988 INFO L93 Difference]: Finished difference Result 2273 states and 2698 transitions. [2023-12-24 14:02:31,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 14:02:31,989 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 107 [2023-12-24 14:02:31,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:02:31,993 INFO L225 Difference]: With dead ends: 2273 [2023-12-24 14:02:31,993 INFO L226 Difference]: Without dead ends: 1602 [2023-12-24 14:02:31,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2023-12-24 14:02:31,995 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 300 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:02:31,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1182 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-24 14:02:31,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2023-12-24 14:02:32,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1408. [2023-12-24 14:02:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1273 states have (on average 1.1586802827965437) internal successors, (1475), 1287 states have internal predecessors, (1475), 96 states have call successors, (96), 38 states have call predecessors, (96), 38 states have return successors, (96), 82 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-24 14:02:32,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 1667 transitions. [2023-12-24 14:02:32,066 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 1667 transitions. Word has length 107 [2023-12-24 14:02:32,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:02:32,067 INFO L495 AbstractCegarLoop]: Abstraction has 1408 states and 1667 transitions. [2023-12-24 14:02:32,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:02:32,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 1667 transitions. [2023-12-24 14:02:32,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-24 14:02:32,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:02:32,069 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:02:32,088 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 (27)] Forceful destruction successful, exit code 0 [2023-12-24 14:02:32,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:02:32,275 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:02:32,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:02:32,276 INFO L85 PathProgramCache]: Analyzing trace with hash -617394217, now seen corresponding path program 1 times [2023-12-24 14:02:32,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:02:32,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726685131] [2023-12-24 14:02:32,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:02:32,276 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:02:32,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:02:32,278 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 14:02:32,279 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 14:02:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:02:32,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 14:02:32,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:02:32,857 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 14:02:32,955 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 71 treesize of output 55 [2023-12-24 14:02:32,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-12-24 14:02:33,189 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 65 treesize of output 45 [2023-12-24 14:02:33,671 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 53 treesize of output 41 [2023-12-24 14:02:33,677 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 40 [2023-12-24 14:02:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 14:02:33,840 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:02:33,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:02:33,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726685131] [2023-12-24 14:02:33,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726685131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:02:33,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:02:33,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-24 14:02:33,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74043979] [2023-12-24 14:02:33,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:02:33,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 14:02:33,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:02:33,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 14:02:33,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-24 14:02:33,841 INFO L87 Difference]: Start difference. First operand 1408 states and 1667 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:02:40,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:02:40,696 INFO L93 Difference]: Finished difference Result 2495 states and 2954 transitions. [2023-12-24 14:02:40,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-24 14:02:40,697 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 107 [2023-12-24 14:02:40,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:02:40,702 INFO L225 Difference]: With dead ends: 2495 [2023-12-24 14:02:40,702 INFO L226 Difference]: Without dead ends: 1766 [2023-12-24 14:02:40,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=401, Invalid=1951, Unknown=0, NotChecked=0, Total=2352 [2023-12-24 14:02:40,704 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 471 mSDsluCounter, 2042 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 1432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-24 14:02:40,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 2243 Invalid, 1432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-24 14:02:40,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2023-12-24 14:02:40,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1458. [2023-12-24 14:02:40,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1323 states have (on average 1.1557067271352985) internal successors, (1529), 1337 states have internal predecessors, (1529), 96 states have call successors, (96), 38 states have call predecessors, (96), 38 states have return successors, (96), 82 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-24 14:02:40,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1721 transitions. [2023-12-24 14:02:40,787 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1721 transitions. Word has length 107 [2023-12-24 14:02:40,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:02:40,787 INFO L495 AbstractCegarLoop]: Abstraction has 1458 states and 1721 transitions. [2023-12-24 14:02:40,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:02:40,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1721 transitions. [2023-12-24 14:02:40,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-24 14:02:40,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:02:40,789 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:02:40,797 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 14:02:40,995 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 14:02:40,995 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:02:40,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:02:40,996 INFO L85 PathProgramCache]: Analyzing trace with hash 639837207, now seen corresponding path program 1 times [2023-12-24 14:02:40,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:02:40,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103540803] [2023-12-24 14:02:40,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:02:40,996 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:02:40,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:02:40,997 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:02:40,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-24 14:02:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:02:41,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 14:02:41,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:02:41,603 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 14:02:41,660 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 14:02:41,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2023-12-24 14:02:41,887 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 14:02:42,171 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 41 [2023-12-24 14:02:42,174 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 64 treesize of output 48 [2023-12-24 14:02:42,280 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 14:02:42,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:02:42,280 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:02:42,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103540803] [2023-12-24 14:02:42,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103540803] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:02:42,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:02:42,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-24 14:02:42,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697701533] [2023-12-24 14:02:42,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:02:42,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 14:02:42,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:02:42,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 14:02:42,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-12-24 14:02:42,281 INFO L87 Difference]: Start difference. First operand 1458 states and 1721 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:02:48,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:02:48,039 INFO L93 Difference]: Finished difference Result 2621 states and 3074 transitions. [2023-12-24 14:02:48,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-24 14:02:48,052 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 107 [2023-12-24 14:02:48,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:02:48,057 INFO L225 Difference]: With dead ends: 2621 [2023-12-24 14:02:48,057 INFO L226 Difference]: Without dead ends: 1892 [2023-12-24 14:02:48,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=530, Invalid=2332, Unknown=0, NotChecked=0, Total=2862 [2023-12-24 14:02:48,059 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 672 mSDsluCounter, 1975 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-24 14:02:48,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 2183 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-24 14:02:48,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2023-12-24 14:02:48,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1420. [2023-12-24 14:02:48,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1303 states have (on average 1.1481197237145049) internal successors, (1496), 1314 states have internal predecessors, (1496), 82 states have call successors, (82), 34 states have call predecessors, (82), 34 states have return successors, (82), 71 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-24 14:02:48,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1660 transitions. [2023-12-24 14:02:48,126 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1660 transitions. Word has length 107 [2023-12-24 14:02:48,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:02:48,126 INFO L495 AbstractCegarLoop]: Abstraction has 1420 states and 1660 transitions. [2023-12-24 14:02:48,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:02:48,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1660 transitions. [2023-12-24 14:02:48,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-24 14:02:48,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:02:48,128 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:02:48,134 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 14:02:48,334 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 14:02:48,334 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:02:48,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:02:48,335 INFO L85 PathProgramCache]: Analyzing trace with hash 411470208, now seen corresponding path program 1 times [2023-12-24 14:02:48,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:02:48,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040866767] [2023-12-24 14:02:48,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:02:48,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:02:48,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:02:48,336 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 14:02:48,338 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 14:02:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:02:48,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 14:02:48,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:02:55,195 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 134 treesize of output 86 [2023-12-24 14:02:55,213 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:02:55,214 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 100 treesize of output 40 [2023-12-24 14:02:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 118 proven. 18 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-24 14:02:56,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:03:05,286 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 14:03:05,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:03:05,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040866767] [2023-12-24 14:03:05,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040866767] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:03:05,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:03:05,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2023-12-24 14:03:05,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949007747] [2023-12-24 14:03:05,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:03:05,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:03:05,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:03:05,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:03:05,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-12-24 14:03:05,288 INFO L87 Difference]: Start difference. First operand 1420 states and 1660 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, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:03:16,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:03:16,761 INFO L93 Difference]: Finished difference Result 2940 states and 3419 transitions. [2023-12-24 14:03:16,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 14:03:16,773 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, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 108 [2023-12-24 14:03:16,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:03:16,776 INFO L225 Difference]: With dead ends: 2940 [2023-12-24 14:03:16,776 INFO L226 Difference]: Without dead ends: 1521 [2023-12-24 14:03:16,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-12-24 14:03:16,782 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 59 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-12-24 14:03:16,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 272 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2023-12-24 14:03:16,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2023-12-24 14:03:16,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 738. [2023-12-24 14:03:16,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 679 states have (on average 1.14580265095729) internal successors, (778), 682 states have internal predecessors, (778), 41 states have call successors, (41), 17 states have call predecessors, (41), 17 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-24 14:03:16,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 860 transitions. [2023-12-24 14:03:16,833 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 860 transitions. Word has length 108 [2023-12-24 14:03:16,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:03:16,833 INFO L495 AbstractCegarLoop]: Abstraction has 738 states and 860 transitions. [2023-12-24 14:03:16,833 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, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:03:16,833 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 860 transitions. [2023-12-24 14:03:16,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-24 14:03:16,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:03:16,838 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:03:16,862 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 14:03:17,044 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 14:03:17,045 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:03:17,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:03:17,045 INFO L85 PathProgramCache]: Analyzing trace with hash -2051190280, now seen corresponding path program 1 times [2023-12-24 14:03:17,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:03:17,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985258040] [2023-12-24 14:03:17,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:03:17,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:03:17,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:03:17,047 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:03:17,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-24 14:03:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:03:17,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-24 14:03:17,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:03:17,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:03:17,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-24 14:03:17,935 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:03:17,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 35 treesize of output 37 [2023-12-24 14:03:18,372 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 14:03:18,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-12-24 14:03:18,972 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:03:18,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 101 treesize of output 77 [2023-12-24 14:03:19,685 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 32 [2023-12-24 14:03:19,835 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 57 treesize of output 45 [2023-12-24 14:03:19,840 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:03:19,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 61 [2023-12-24 14:03:20,032 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 149 proven. 21 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-24 14:03:20,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:03:20,854 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 14:03:20,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:03:20,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985258040] [2023-12-24 14:03:20,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985258040] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:03:20,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:03:20,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [25] total 32 [2023-12-24 14:03:20,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325160812] [2023-12-24 14:03:20,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:03:20,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 14:03:20,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:03:20,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 14:03:20,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2023-12-24 14:03:20,856 INFO L87 Difference]: Start difference. First operand 738 states and 860 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:03:23,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:03:23,179 INFO L93 Difference]: Finished difference Result 1318 states and 1540 transitions. [2023-12-24 14:03:23,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 14:03:23,180 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 110 [2023-12-24 14:03:23,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:03:23,182 INFO L225 Difference]: With dead ends: 1318 [2023-12-24 14:03:23,182 INFO L226 Difference]: Without dead ends: 931 [2023-12-24 14:03:23,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=277, Invalid=1703, Unknown=0, NotChecked=0, Total=1980 [2023-12-24 14:03:23,183 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 117 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 14:03:23,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 883 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 14:03:23,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2023-12-24 14:03:23,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 738. [2023-12-24 14:03:23,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 679 states have (on average 1.14580265095729) internal successors, (778), 682 states have internal predecessors, (778), 41 states have call successors, (41), 17 states have call predecessors, (41), 17 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-24 14:03:23,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 860 transitions. [2023-12-24 14:03:23,222 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 860 transitions. Word has length 110 [2023-12-24 14:03:23,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:03:23,222 INFO L495 AbstractCegarLoop]: Abstraction has 738 states and 860 transitions. [2023-12-24 14:03:23,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:03:23,222 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 860 transitions. [2023-12-24 14:03:23,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-24 14:03:23,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:03:23,223 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:03:23,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-24 14:03:23,430 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 14:03:23,430 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:03:23,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:03:23,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1434430390, now seen corresponding path program 1 times [2023-12-24 14:03:23,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:03:23,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209360166] [2023-12-24 14:03:23,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:03:23,431 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:03:23,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:03:23,432 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 14:03:23,433 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 14:03:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:03:23,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 14:03:23,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:03:23,910 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 12 treesize of output 8 [2023-12-24 14:03:24,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2023-12-24 14:03:24,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2023-12-24 14:03:24,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2023-12-24 14:03:24,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 36 [2023-12-24 14:03:24,732 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 57 treesize of output 45 [2023-12-24 14:03:24,734 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 79 treesize of output 51 [2023-12-24 14:03:24,785 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 125 proven. 15 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-24 14:03:24,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:03:24,915 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 14:03:24,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:03:24,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209360166] [2023-12-24 14:03:24,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209360166] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:03:24,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:03:24,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 19 [2023-12-24 14:03:24,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108723158] [2023-12-24 14:03:24,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:03:24,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 14:03:24,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:03:24,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 14:03:24,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-12-24 14:03:24,917 INFO L87 Difference]: Start difference. First operand 738 states and 860 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:03:25,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:03:25,440 INFO L93 Difference]: Finished difference Result 1226 states and 1434 transitions. [2023-12-24 14:03:25,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 14:03:25,442 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 110 [2023-12-24 14:03:25,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:03:25,444 INFO L225 Difference]: With dead ends: 1226 [2023-12-24 14:03:25,444 INFO L226 Difference]: Without dead ends: 795 [2023-12-24 14:03:25,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2023-12-24 14:03:25,453 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 75 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:03:25,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 848 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 14:03:25,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2023-12-24 14:03:25,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 664. [2023-12-24 14:03:25,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 605 states have (on average 1.147107438016529) internal successors, (694), 608 states have internal predecessors, (694), 41 states have call successors, (41), 17 states have call predecessors, (41), 17 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-24 14:03:25,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 776 transitions. [2023-12-24 14:03:25,501 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 776 transitions. Word has length 110 [2023-12-24 14:03:25,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:03:25,501 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 776 transitions. [2023-12-24 14:03:25,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:03:25,502 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 776 transitions. [2023-12-24 14:03:25,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-24 14:03:25,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:03:25,503 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:03:25,510 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 (32)] Forceful destruction successful, exit code 0 [2023-12-24 14:03:25,710 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 14:03:25,710 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:03:25,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:03:25,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1171549846, now seen corresponding path program 1 times [2023-12-24 14:03:25,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:03:25,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067321927] [2023-12-24 14:03:25,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:03:25,711 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:03:25,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:03:25,712 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:03:25,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-24 14:03:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:03:26,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 14:03:26,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:03:33,023 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 135 treesize of output 87 [2023-12-24 14:03:33,042 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:03:33,043 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 99 treesize of output 39 [2023-12-24 14:03:34,108 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 648 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2023-12-24 14:03:34,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:03:34,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:03:34,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067321927] [2023-12-24 14:03:34,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067321927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:03:34,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:03:34,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 14:03:34,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317737758] [2023-12-24 14:03:34,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:03:34,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 14:03:34,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:03:34,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 14:03:34,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-24 14:03:34,109 INFO L87 Difference]: Start difference. First operand 664 states and 776 transitions. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 9 states have internal predecessors, (105), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-12-24 14:03:43,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:03:43,462 INFO L93 Difference]: Finished difference Result 1753 states and 2045 transitions. [2023-12-24 14:03:43,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 14:03:43,463 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 9 states have internal predecessors, (105), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 208 [2023-12-24 14:03:43,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:03:43,466 INFO L225 Difference]: With dead ends: 1753 [2023-12-24 14:03:43,466 INFO L226 Difference]: Without dead ends: 1332 [2023-12-24 14:03:43,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-12-24 14:03:43,467 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 234 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:03:43,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 789 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-24 14:03:43,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2023-12-24 14:03:43,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1285. [2023-12-24 14:03:43,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1168 states have (on average 1.1369863013698631) internal successors, (1328), 1179 states have internal predecessors, (1328), 82 states have call successors, (82), 34 states have call predecessors, (82), 34 states have return successors, (82), 71 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-24 14:03:43,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1492 transitions. [2023-12-24 14:03:43,549 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1492 transitions. Word has length 208 [2023-12-24 14:03:43,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:03:43,549 INFO L495 AbstractCegarLoop]: Abstraction has 1285 states and 1492 transitions. [2023-12-24 14:03:43,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 9 states have internal predecessors, (105), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-12-24 14:03:43,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1492 transitions. [2023-12-24 14:03:43,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-24 14:03:43,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:03:43,551 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:03:43,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2023-12-24 14:03:43,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:03:43,752 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:03:43,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:03:43,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1800415995, now seen corresponding path program 1 times [2023-12-24 14:03:43,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:03:43,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475078761] [2023-12-24 14:03:43,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:03:43,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:03:43,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:03:43,754 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:03:43,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-24 14:03:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:03:44,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 14:03:44,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:03:44,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:03:44,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 14:03:44,570 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:03:44,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 39 treesize of output 26 [2023-12-24 14:03:44,642 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 14:03:44,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:03:44,672 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 48 treesize of output 30 [2023-12-24 14:03:44,714 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 16 [2023-12-24 14:03:44,764 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 657 proven. 15 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2023-12-24 14:03:44,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:03:45,063 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 52 proven. 48 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2023-12-24 14:03:45,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:03:45,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475078761] [2023-12-24 14:03:45,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475078761] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 14:03:45,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:03:45,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-12-24 14:03:45,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846609019] [2023-12-24 14:03:45,063 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:03:45,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 14:03:45,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:03:45,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 14:03:45,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-12-24 14:03:45,065 INFO L87 Difference]: Start difference. First operand 1285 states and 1492 transitions. Second operand has 16 states, 14 states have (on average 8.214285714285714) internal successors, (115), 16 states have internal predecessors, (115), 6 states have call successors, (39), 4 states have call predecessors, (39), 6 states have return successors, (39), 4 states have call predecessors, (39), 6 states have call successors, (39) [2023-12-24 14:03:47,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:03:47,046 INFO L93 Difference]: Finished difference Result 2201 states and 2551 transitions. [2023-12-24 14:03:47,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 14:03:47,047 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 8.214285714285714) internal successors, (115), 16 states have internal predecessors, (115), 6 states have call successors, (39), 4 states have call predecessors, (39), 6 states have return successors, (39), 4 states have call predecessors, (39), 6 states have call successors, (39) Word has length 210 [2023-12-24 14:03:47,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:03:47,050 INFO L225 Difference]: With dead ends: 2201 [2023-12-24 14:03:47,050 INFO L226 Difference]: Without dead ends: 1365 [2023-12-24 14:03:47,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 404 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=238, Invalid=754, Unknown=0, NotChecked=0, Total=992 [2023-12-24 14:03:47,052 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 558 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:03:47,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 637 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 14:03:47,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2023-12-24 14:03:47,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 933. [2023-12-24 14:03:47,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 851 states have (on average 1.1233842538190364) internal successors, (956), 855 states have internal predecessors, (956), 50 states have call successors, (50), 31 states have call predecessors, (50), 31 states have return successors, (50), 46 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-24 14:03:47,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1056 transitions. [2023-12-24 14:03:47,120 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1056 transitions. Word has length 210 [2023-12-24 14:03:47,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:03:47,120 INFO L495 AbstractCegarLoop]: Abstraction has 933 states and 1056 transitions. [2023-12-24 14:03:47,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 8.214285714285714) internal successors, (115), 16 states have internal predecessors, (115), 6 states have call successors, (39), 4 states have call predecessors, (39), 6 states have return successors, (39), 4 states have call predecessors, (39), 6 states have call successors, (39) [2023-12-24 14:03:47,120 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1056 transitions. [2023-12-24 14:03:47,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-24 14:03:47,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:03:47,122 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:03:47,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-24 14:03:47,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:03:47,342 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:03:47,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:03:47,342 INFO L85 PathProgramCache]: Analyzing trace with hash -431718597, now seen corresponding path program 1 times [2023-12-24 14:03:47,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:03:47,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029427368] [2023-12-24 14:03:47,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:03:47,343 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:03:47,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:03:47,344 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 14:03:47,344 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 14:03:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:03:48,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-24 14:03:48,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:03:48,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:03:48,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-24 14:03:48,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 14:03:48,853 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:03:48,854 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 54 treesize of output 36 [2023-12-24 14:03:48,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-12-24 14:03:49,048 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 11 [2023-12-24 14:03:49,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:03:49,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 14:03:51,664 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:03:51,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 79 treesize of output 48 [2023-12-24 14:03:53,047 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:03:53,047 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 80 treesize of output 38 [2023-12-24 14:03:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 276 proven. 551 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-12-24 14:03:53,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:03:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 957 trivial. 0 not checked. [2023-12-24 14:03:57,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:03:57,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029427368] [2023-12-24 14:03:57,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029427368] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:03:57,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:03:57,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [29] total 35 [2023-12-24 14:03:57,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866803130] [2023-12-24 14:03:57,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:03:57,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 14:03:57,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:03:57,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 14:03:57,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1028, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 14:03:57,158 INFO L87 Difference]: Start difference. First operand 933 states and 1056 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:04:00,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:04:00,327 INFO L93 Difference]: Finished difference Result 1551 states and 1733 transitions. [2023-12-24 14:04:00,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 14:04:00,332 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 210 [2023-12-24 14:04:00,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:04:00,333 INFO L225 Difference]: With dead ends: 1551 [2023-12-24 14:04:00,333 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 14:04:00,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=177, Invalid=1155, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 14:04:00,334 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 69 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-24 14:04:00,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 386 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-24 14:04:00,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 14:04:00,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 14:04:00,335 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 14:04:00,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 14:04:00,335 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 210 [2023-12-24 14:04:00,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:04:00,335 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 14:04:00,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-24 14:04:00,335 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 14:04:00,335 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 14:04:00,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 14:04:00,348 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 (35)] Forceful destruction successful, exit code 0 [2023-12-24 14:04:00,540 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 [2023-12-24 14:04:00,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-24 14:15:40,784 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-17-8-12-9-12-15-12-18-11-18-10-18-8-12-8-12-8-12-8-8-8-8-8-8-8-6-8-6-8-6-6-6-5-6-4-6-2-6-2-6-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-77-11-10-9-12-15-14-18-12-18-8-18-8-13-8-12-8-12-8-8-8-8-8-8-8-7-8-7-6-7-5-6-4-6-2-6-2-6-1 context. [2023-12-24 14:15:40,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 14:15:40,793 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 14:15:40,794 INFO L158 Benchmark]: Toolchain (without parser) took 877398.16ms. Allocated memory was 185.6MB in the beginning and 780.1MB in the end (delta: 594.5MB). Free memory was 145.0MB in the beginning and 602.9MB in the end (delta: -457.9MB). Peak memory consumption was 137.7MB. Max. memory is 8.0GB. [2023-12-24 14:15:40,794 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 185.6MB. Free memory was 143.7MB in the beginning and 143.6MB in the end (delta: 70.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 14:15:40,794 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.36ms. Allocated memory is still 185.6MB. Free memory was 144.6MB in the beginning and 128.8MB in the end (delta: 15.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-24 14:15:40,794 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.33ms. Allocated memory is still 185.6MB. Free memory was 128.8MB in the beginning and 125.3MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 14:15:40,795 INFO L158 Benchmark]: Boogie Preprocessor took 64.34ms. Allocated memory is still 185.6MB. Free memory was 125.3MB in the beginning and 119.4MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-24 14:15:40,795 INFO L158 Benchmark]: RCFGBuilder took 945.46ms. Allocated memory is still 185.6MB. Free memory was 119.4MB in the beginning and 153.4MB in the end (delta: -34.0MB). Peak memory consumption was 46.7MB. Max. memory is 8.0GB. [2023-12-24 14:15:40,795 INFO L158 Benchmark]: TraceAbstraction took 876107.72ms. Allocated memory was 185.6MB in the beginning and 780.1MB in the end (delta: 594.5MB). Free memory was 152.4MB in the beginning and 602.9MB in the end (delta: -450.5MB). Peak memory consumption was 143.5MB. Max. memory is 8.0GB. [2023-12-24 14:15:40,796 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 185.6MB. Free memory was 143.7MB in the beginning and 143.6MB in the end (delta: 70.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 224.36ms. Allocated memory is still 185.6MB. Free memory was 144.6MB in the beginning and 128.8MB in the end (delta: 15.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 52.33ms. Allocated memory is still 185.6MB. Free memory was 128.8MB in the beginning and 125.3MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 64.34ms. Allocated memory is still 185.6MB. Free memory was 125.3MB in the beginning and 119.4MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 945.46ms. Allocated memory is still 185.6MB. Free memory was 119.4MB in the beginning and 153.4MB in the end (delta: -34.0MB). Peak memory consumption was 46.7MB. Max. memory is 8.0GB. * TraceAbstraction took 876107.72ms. Allocated memory was 185.6MB in the beginning and 780.1MB in the end (delta: 594.5MB). Free memory was 152.4MB in the beginning and 602.9MB in the end (delta: -450.5MB). Peak memory consumption was 143.5MB. 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 ∨-17-8-12-9-12-15-12-18-11-18-10-18-8-12-8-12-8-12-8-8-8-8-8-8-8-6-8-6-8-6-6-6-5-6-4-6-2-6-2-6-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-32-8-12-9-12-15-12-18-11-18-10-18-8-12-8-12-8-12-8-8-8-8-8-8-8-6-8-6-8-6-6-6-5-6-4-6-2-6-2-6-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown [2023-12-24 14:15:40,807 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