/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-92.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 15:51:27,012 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 15:51:27,077 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 15:51:27,080 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 15:51:27,081 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 15:51:27,107 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 15:51:27,107 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 15:51:27,108 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 15:51:27,108 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 15:51:27,111 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 15:51:27,111 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 15:51:27,112 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 15:51:27,112 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 15:51:27,113 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 15:51:27,114 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 15:51:27,114 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 15:51:27,114 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 15:51:27,114 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 15:51:27,114 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 15:51:27,115 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 15:51:27,115 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 15:51:27,115 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 15:51:27,115 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 15:51:27,115 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 15:51:27,116 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 15:51:27,116 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 15:51:27,116 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 15:51:27,116 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 15:51:27,116 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 15:51:27,116 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 15:51:27,117 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 15:51:27,117 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 15:51:27,117 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 15:51:27,118 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 15:51:27,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 15:51:27,118 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 15:51:27,118 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 15:51:27,118 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 15:51:27,118 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 15:51:27,118 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 15:51:27,118 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 15:51:27,119 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 15:51:27,119 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 15:51:27,119 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 15:51:27,119 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 15:51:27,119 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 15:51:27,119 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 15:51:27,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 15:51:27,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 15:51:27,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 15:51:27,304 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 15:51:27,307 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 15:51:27,308 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-92.i [2023-12-24 15:51:28,386 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 15:51:28,573 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 15:51:28,573 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-92.i [2023-12-24 15:51:28,579 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2215b75b8/c64636dd5f284a8484ffa90941c0f156/FLAG67220173b [2023-12-24 15:51:28,594 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2215b75b8/c64636dd5f284a8484ffa90941c0f156 [2023-12-24 15:51:28,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 15:51:28,597 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 15:51:28,599 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 15:51:28,599 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 15:51:28,603 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 15:51:28,604 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 03:51:28" (1/1) ... [2023-12-24 15:51:28,604 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3995e7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:51:28, skipping insertion in model container [2023-12-24 15:51:28,605 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 03:51:28" (1/1) ... [2023-12-24 15:51:28,636 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 15:51:28,742 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-92.i[917,930] [2023-12-24 15:51:28,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 15:51:28,813 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 15:51:28,822 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-92.i[917,930] [2023-12-24 15:51:28,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 15:51:28,886 INFO L206 MainTranslator]: Completed translation [2023-12-24 15:51:28,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:51:28 WrapperNode [2023-12-24 15:51:28,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 15:51:28,888 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 15:51:28,888 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 15:51:28,888 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 15:51:28,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:51:28" (1/1) ... [2023-12-24 15:51:28,917 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:51:28" (1/1) ... [2023-12-24 15:51:28,951 INFO L138 Inliner]: procedures = 36, calls = 159, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 451 [2023-12-24 15:51:28,951 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 15:51:28,952 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 15:51:28,952 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 15:51:28,952 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 15:51:28,960 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:51:28" (1/1) ... [2023-12-24 15:51:28,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:51:28" (1/1) ... [2023-12-24 15:51:28,965 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:51:28" (1/1) ... [2023-12-24 15:51:28,981 INFO L175 MemorySlicer]: Split 123 memory accesses to 7 slices as follows [2, 21, 23, 3, 61, 3, 10]. 50 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 3, 3, 1, 6, 1, 2]. The 18 writes are split as follows [0, 4, 4, 1, 6, 1, 2]. [2023-12-24 15:51:28,981 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:51:28" (1/1) ... [2023-12-24 15:51:28,981 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:51:28" (1/1) ... [2023-12-24 15:51:29,007 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:51:28" (1/1) ... [2023-12-24 15:51:29,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:51:28" (1/1) ... [2023-12-24 15:51:29,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:51:28" (1/1) ... [2023-12-24 15:51:29,015 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:51:28" (1/1) ... [2023-12-24 15:51:29,020 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 15:51:29,021 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 15:51:29,021 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 15:51:29,021 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 15:51:29,021 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:51:28" (1/1) ... [2023-12-24 15:51:29,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 15:51:29,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 15:51:29,068 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 15:51:29,100 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 15:51:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 15:51:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2023-12-24 15:51:29,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2023-12-24 15:51:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2023-12-24 15:51:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2023-12-24 15:51:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#4 [2023-12-24 15:51:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#5 [2023-12-24 15:51:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#6 [2023-12-24 15:51:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2023-12-24 15:51:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2023-12-24 15:51:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2023-12-24 15:51:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2023-12-24 15:51:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#4 [2023-12-24 15:51:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#5 [2023-12-24 15:51:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#6 [2023-12-24 15:51:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 15:51:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 15:51:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 15:51:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 15:51:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 15:51:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 15:51:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-24 15:51:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 15:51:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 15:51:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 15:51:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 15:51:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 15:51:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-24 15:51:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#6 [2023-12-24 15:51:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 15:51:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 15:51:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 15:51:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 15:51:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 15:51:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 15:51:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-24 15:51:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 15:51:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 15:51:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2023-12-24 15:51:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2023-12-24 15:51:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2023-12-24 15:51:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#5 [2023-12-24 15:51:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#6 [2023-12-24 15:51:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2023-12-24 15:51:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2023-12-24 15:51:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#2 [2023-12-24 15:51:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#3 [2023-12-24 15:51:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#4 [2023-12-24 15:51:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#5 [2023-12-24 15:51:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#6 [2023-12-24 15:51:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 15:51:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 15:51:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 15:51:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 15:51:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 15:51:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-24 15:51:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#6 [2023-12-24 15:51:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 15:51:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 15:51:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2023-12-24 15:51:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2023-12-24 15:51:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2023-12-24 15:51:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#5 [2023-12-24 15:51:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#6 [2023-12-24 15:51:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 15:51:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 15:51:29,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2023-12-24 15:51:29,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2023-12-24 15:51:29,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2023-12-24 15:51:29,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#5 [2023-12-24 15:51:29,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#6 [2023-12-24 15:51:29,113 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 15:51:29,113 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 15:51:29,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 15:51:29,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 15:51:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 15:51:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 15:51:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 15:51:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 15:51:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 15:51:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 15:51:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-24 15:51:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 15:51:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 15:51:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 15:51:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 15:51:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 15:51:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-24 15:51:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#6 [2023-12-24 15:51:29,296 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 15:51:29,297 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 15:51:30,112 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 15:51:30,164 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 15:51:30,164 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 15:51:30,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 03:51:30 BoogieIcfgContainer [2023-12-24 15:51:30,164 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 15:51:30,166 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 15:51:30,166 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 15:51:30,168 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 15:51:30,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 03:51:28" (1/3) ... [2023-12-24 15:51:30,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ed8c9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 03:51:30, skipping insertion in model container [2023-12-24 15:51:30,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:51:28" (2/3) ... [2023-12-24 15:51:30,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ed8c9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 03:51:30, skipping insertion in model container [2023-12-24 15:51:30,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 03:51:30" (3/3) ... [2023-12-24 15:51:30,170 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-92.i [2023-12-24 15:51:30,186 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 15:51:30,186 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 15:51:30,228 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 15:51:30,234 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;@20c809cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 15:51:30,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 15:51:30,238 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 76 states have (on average 1.394736842105263) internal successors, (106), 77 states have internal predecessors, (106), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 15:51:30,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 15:51:30,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:51:30,249 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:51:30,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:51:30,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:51:30,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1111023281, now seen corresponding path program 1 times [2023-12-24 15:51:30,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:51:30,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835239343] [2023-12-24 15:51:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:51:30,264 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 15:51:30,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:51:30,269 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 15:51:30,270 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 15:51:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:51:30,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 15:51:30,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:51:30,730 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-12-24 15:51:30,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:51:30,731 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:51:30,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835239343] [2023-12-24 15:51:30,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835239343] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:51:30,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:51:30,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 15:51:30,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014340812] [2023-12-24 15:51:30,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:51:30,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 15:51:30,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:51:30,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 15:51:30,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 15:51:30,757 INFO L87 Difference]: Start difference. First operand has 98 states, 76 states have (on average 1.394736842105263) internal successors, (106), 77 states have internal predecessors, (106), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 15:51:30,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:51:30,796 INFO L93 Difference]: Finished difference Result 193 states and 305 transitions. [2023-12-24 15:51:30,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 15:51:30,798 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 146 [2023-12-24 15:51:30,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:51:30,803 INFO L225 Difference]: With dead ends: 193 [2023-12-24 15:51:30,803 INFO L226 Difference]: Without dead ends: 96 [2023-12-24 15:51:30,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 145 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 15:51:30,808 INFO L413 NwaCegarLoop]: 135 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, 135 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 15:51:30,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 135 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:51:30,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-24 15:51:30,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-12-24 15:51:30,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 75 states have internal predecessors, (101), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 15:51:30,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 139 transitions. [2023-12-24 15:51:30,855 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 139 transitions. Word has length 146 [2023-12-24 15:51:30,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:51:30,855 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 139 transitions. [2023-12-24 15:51:30,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 15:51:30,856 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 139 transitions. [2023-12-24 15:51:30,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 15:51:30,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:51:30,858 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:51:30,869 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 15:51:31,068 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 15:51:31,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:51:31,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:51:31,070 INFO L85 PathProgramCache]: Analyzing trace with hash 23756047, now seen corresponding path program 1 times [2023-12-24 15:51:31,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:51:31,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439925860] [2023-12-24 15:51:31,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:51:31,071 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 15:51:31,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:51:31,076 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 15:51:31,077 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 15:51:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:51:31,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 15:51:31,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:51:31,554 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 15:51:31,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:51:31,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:51:31,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439925860] [2023-12-24 15:51:31,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439925860] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:51:31,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:51:31,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 15:51:31,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097656454] [2023-12-24 15:51:31,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:51:31,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 15:51:31,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:51:31,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 15:51:31,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:51:31,558 INFO L87 Difference]: Start difference. First operand 96 states and 139 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 15:51:31,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:51:31,829 INFO L93 Difference]: Finished difference Result 216 states and 312 transitions. [2023-12-24 15:51:31,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 15:51:31,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 15:51:31,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:51:31,835 INFO L225 Difference]: With dead ends: 216 [2023-12-24 15:51:31,835 INFO L226 Difference]: Without dead ends: 121 [2023-12-24 15:51:31,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-12-24 15:51:31,837 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 44 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 15:51:31,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 750 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 15:51:31,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-24 15:51:31,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 104. [2023-12-24 15:51:31,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 83 states have (on average 1.3132530120481927) internal successors, (109), 83 states have internal predecessors, (109), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 15:51:31,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 147 transitions. [2023-12-24 15:51:31,849 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 147 transitions. Word has length 146 [2023-12-24 15:51:31,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:51:31,851 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 147 transitions. [2023-12-24 15:51:31,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 15:51:31,851 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 147 transitions. [2023-12-24 15:51:31,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 15:51:31,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:51:31,853 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:51:31,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 15:51:32,054 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 15:51:32,055 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:51:32,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:51:32,056 INFO L85 PathProgramCache]: Analyzing trace with hash 23815629, now seen corresponding path program 1 times [2023-12-24 15:51:32,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:51:32,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046276946] [2023-12-24 15:51:32,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:51:32,060 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 15:51:32,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:51:32,064 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 15:51:32,065 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 15:51:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:51:32,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 15:51:32,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:51:34,406 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 25 treesize of output 13 [2023-12-24 15:51:34,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 15:51:34,471 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 4 proven. 292 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2023-12-24 15:51:34,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:51:34,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:51:34,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046276946] [2023-12-24 15:51:34,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046276946] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:51:34,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [285131113] [2023-12-24 15:51:34,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:51:34,570 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:51:34,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:51:34,609 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:51:34,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-24 15:51:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:51:35,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 15:51:35,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:51:37,288 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 15:51:37,747 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 25 treesize of output 13 [2023-12-24 15:51:37,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 15:51:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 4 proven. 292 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2023-12-24 15:51:37,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:51:37,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [285131113] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:51:37,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:51:37,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-12-24 15:51:37,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600020318] [2023-12-24 15:51:37,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:51:37,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 15:51:37,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:51:37,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 15:51:37,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-12-24 15:51:37,925 INFO L87 Difference]: Start difference. First operand 104 states and 147 transitions. Second operand has 18 states, 16 states have (on average 6.3125) internal successors, (101), 15 states have internal predecessors, (101), 6 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 4 states have call predecessors, (38), 6 states have call successors, (38) [2023-12-24 15:51:38,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:51:38,988 INFO L93 Difference]: Finished difference Result 213 states and 298 transitions. [2023-12-24 15:51:38,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 15:51:38,989 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 6.3125) internal successors, (101), 15 states have internal predecessors, (101), 6 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 4 states have call predecessors, (38), 6 states have call successors, (38) Word has length 146 [2023-12-24 15:51:38,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:51:38,990 INFO L225 Difference]: With dead ends: 213 [2023-12-24 15:51:38,990 INFO L226 Difference]: Without dead ends: 110 [2023-12-24 15:51:38,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 322 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2023-12-24 15:51:38,992 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 248 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 15:51:38,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 439 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 15:51:38,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-12-24 15:51:39,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2023-12-24 15:51:39,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 86 states have (on average 1.2906976744186047) internal successors, (111), 86 states have internal predecessors, (111), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 15:51:39,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 149 transitions. [2023-12-24 15:51:39,001 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 149 transitions. Word has length 146 [2023-12-24 15:51:39,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:51:39,002 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 149 transitions. [2023-12-24 15:51:39,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 6.3125) internal successors, (101), 15 states have internal predecessors, (101), 6 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 4 states have call predecessors, (38), 6 states have call successors, (38) [2023-12-24 15:51:39,002 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 149 transitions. [2023-12-24 15:51:39,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 15:51:39,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:51:39,004 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:51:39,029 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 15:51:39,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-12-24 15:51:39,416 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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:51:39,417 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:51:39,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:51:39,418 INFO L85 PathProgramCache]: Analyzing trace with hash -793832821, now seen corresponding path program 1 times [2023-12-24 15:51:39,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:51:39,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999632433] [2023-12-24 15:51:39,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:51:39,429 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 15:51:39,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:51:39,430 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 15:51:39,448 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 15:51:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:51:39,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 15:51:39,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:51:40,942 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 15:51:41,408 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 25 treesize of output 13 [2023-12-24 15:51:41,717 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 25 treesize of output 13 [2023-12-24 15:51:42,057 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 25 treesize of output 13 [2023-12-24 15:51:42,380 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 22 treesize of output 21 [2023-12-24 15:51:43,213 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:51:43,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-12-24 15:51:43,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-12-24 15:51:43,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:51:43,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2023-12-24 15:51:43,722 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 193 proven. 317 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-12-24 15:51:43,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:51:44,788 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:51:44,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [999632433] [2023-12-24 15:51:44,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [999632433] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:51:44,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2048007232] [2023-12-24 15:51:44,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:51:44,788 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:51:44,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:51:44,789 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:51:44,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-24 15:51:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:51:46,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 15:51:46,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:51:46,766 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 15:51:47,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2023-12-24 15:51:48,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2023-12-24 15:51:48,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2023-12-24 15:51:49,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2023-12-24 15:51:49,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2023-12-24 15:51:49,975 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 13 [2023-12-24 15:51:49,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 26 [2023-12-24 15:51:51,293 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 271 proven. 301 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-24 15:51:51,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:51:51,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-12-24 15:51:53,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2048007232] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:51:53,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:51:53,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-24 15:51:53,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369046943] [2023-12-24 15:51:53,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:51:53,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-24 15:51:53,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:51:53,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-24 15:51:53,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=885, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 15:51:53,374 INFO L87 Difference]: Start difference. First operand 108 states and 149 transitions. Second operand has 27 states, 24 states have (on average 5.041666666666667) internal successors, (121), 24 states have internal predecessors, (121), 12 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (38), 10 states have call predecessors, (38), 12 states have call successors, (38) [2023-12-24 15:52:05,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:52:05,488 INFO L93 Difference]: Finished difference Result 303 states and 403 transitions. [2023-12-24 15:52:05,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-24 15:52:05,502 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 5.041666666666667) internal successors, (121), 24 states have internal predecessors, (121), 12 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (38), 10 states have call predecessors, (38), 12 states have call successors, (38) Word has length 146 [2023-12-24 15:52:05,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:52:05,503 INFO L225 Difference]: With dead ends: 303 [2023-12-24 15:52:05,503 INFO L226 Difference]: Without dead ends: 196 [2023-12-24 15:52:05,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=873, Invalid=2909, Unknown=0, NotChecked=0, Total=3782 [2023-12-24 15:52:05,505 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 619 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:52:05,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 919 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-24 15:52:05,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-12-24 15:52:05,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 189. [2023-12-24 15:52:05,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 155 states have (on average 1.2774193548387096) internal successors, (198), 156 states have internal predecessors, (198), 25 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-24 15:52:05,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 248 transitions. [2023-12-24 15:52:05,544 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 248 transitions. Word has length 146 [2023-12-24 15:52:05,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:52:05,544 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 248 transitions. [2023-12-24 15:52:05,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 5.041666666666667) internal successors, (121), 24 states have internal predecessors, (121), 12 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (38), 10 states have call predecessors, (38), 12 states have call successors, (38) [2023-12-24 15:52:05,544 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 248 transitions. [2023-12-24 15:52:05,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 15:52:05,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:52:05,549 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:05,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-24 15:52:05,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 15:52:05,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 15:52:05,955 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:52:05,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:52:05,955 INFO L85 PathProgramCache]: Analyzing trace with hash 2138648197, now seen corresponding path program 1 times [2023-12-24 15:52:05,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:52:05,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557253302] [2023-12-24 15:52:05,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:52:05,956 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 15:52:05,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:52:05,957 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 15:52:05,958 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 15:52:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:52:06,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 15:52:06,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:52:06,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-24 15:52:06,652 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 15 proven. 237 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2023-12-24 15:52:06,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:52:06,859 INFO L349 Elim1Store]: treesize reduction 4, result has 69.2 percent of original size [2023-12-24 15:52:06,859 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 22 treesize of output 21 [2023-12-24 15:52:06,900 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 9 proven. 45 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-24 15:52:06,900 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:52:06,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557253302] [2023-12-24 15:52:06,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557253302] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 15:52:06,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:52:06,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-12-24 15:52:06,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666984562] [2023-12-24 15:52:06,901 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:52:06,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 15:52:06,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:52:06,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 15:52:06,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 15:52:06,902 INFO L87 Difference]: Start difference. First operand 189 states and 248 transitions. Second operand has 11 states, 9 states have (on average 7.666666666666667) internal successors, (69), 11 states have internal predecessors, (69), 4 states have call successors, (38), 3 states have call predecessors, (38), 5 states have return successors, (38), 2 states have call predecessors, (38), 4 states have call successors, (38) [2023-12-24 15:52:07,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:52:07,767 INFO L93 Difference]: Finished difference Result 393 states and 509 transitions. [2023-12-24 15:52:07,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 15:52:07,769 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.666666666666667) internal successors, (69), 11 states have internal predecessors, (69), 4 states have call successors, (38), 3 states have call predecessors, (38), 5 states have return successors, (38), 2 states have call predecessors, (38), 4 states have call successors, (38) Word has length 148 [2023-12-24 15:52:07,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:52:07,772 INFO L225 Difference]: With dead ends: 393 [2023-12-24 15:52:07,772 INFO L226 Difference]: Without dead ends: 205 [2023-12-24 15:52:07,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 285 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-24 15:52:07,779 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 163 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 15:52:07,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 441 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 15:52:07,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-12-24 15:52:07,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 197. [2023-12-24 15:52:07,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 161 states have (on average 1.2608695652173914) internal successors, (203), 162 states have internal predecessors, (203), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-24 15:52:07,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 253 transitions. [2023-12-24 15:52:07,811 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 253 transitions. Word has length 148 [2023-12-24 15:52:07,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:52:07,811 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 253 transitions. [2023-12-24 15:52:07,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.666666666666667) internal successors, (69), 11 states have internal predecessors, (69), 4 states have call successors, (38), 3 states have call predecessors, (38), 5 states have return successors, (38), 2 states have call predecessors, (38), 4 states have call successors, (38) [2023-12-24 15:52:07,811 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 253 transitions. [2023-12-24 15:52:07,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 15:52:07,814 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:52:07,814 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:07,826 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 15:52:08,016 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 15:52:08,017 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:52:08,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:52:08,017 INFO L85 PathProgramCache]: Analyzing trace with hash 449704455, now seen corresponding path program 1 times [2023-12-24 15:52:08,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:52:08,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623707987] [2023-12-24 15:52:08,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:52:08,018 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 15:52:08,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:52:08,019 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 15:52:08,021 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 (9)] Waiting until timeout for monitored process [2023-12-24 15:52:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:52:08,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 15:52:08,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:52:08,647 INFO L349 Elim1Store]: treesize reduction 18, result has 45.5 percent of original size [2023-12-24 15:52:08,647 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 1 case distinctions, treesize of input 21 treesize of output 28 [2023-12-24 15:52:08,665 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 15:52:08,678 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 15 proven. 237 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2023-12-24 15:52:08,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:52:08,932 INFO L349 Elim1Store]: treesize reduction 4, result has 69.2 percent of original size [2023-12-24 15:52:08,932 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 22 treesize of output 21 [2023-12-24 15:52:08,967 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 9 proven. 45 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-24 15:52:08,968 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:52:08,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623707987] [2023-12-24 15:52:08,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623707987] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 15:52:08,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:52:08,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2023-12-24 15:52:08,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620744716] [2023-12-24 15:52:08,968 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:52:08,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-24 15:52:08,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:52:08,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-24 15:52:08,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-24 15:52:08,969 INFO L87 Difference]: Start difference. First operand 197 states and 253 transitions. Second operand has 15 states, 13 states have (on average 5.615384615384615) internal successors, (73), 15 states have internal predecessors, (73), 4 states have call successors, (38), 3 states have call predecessors, (38), 5 states have return successors, (38), 2 states have call predecessors, (38), 4 states have call successors, (38) [2023-12-24 15:52:09,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:52:09,778 INFO L93 Difference]: Finished difference Result 366 states and 465 transitions. [2023-12-24 15:52:09,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 15:52:09,780 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.615384615384615) internal successors, (73), 15 states have internal predecessors, (73), 4 states have call successors, (38), 3 states have call predecessors, (38), 5 states have return successors, (38), 2 states have call predecessors, (38), 4 states have call successors, (38) Word has length 148 [2023-12-24 15:52:09,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:52:09,782 INFO L225 Difference]: With dead ends: 366 [2023-12-24 15:52:09,782 INFO L226 Difference]: Without dead ends: 170 [2023-12-24 15:52:09,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 280 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2023-12-24 15:52:09,783 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 252 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 15:52:09,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 569 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 15:52:09,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-12-24 15:52:09,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 162. [2023-12-24 15:52:09,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 126 states have (on average 1.2222222222222223) internal successors, (154), 127 states have internal predecessors, (154), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-24 15:52:09,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 204 transitions. [2023-12-24 15:52:09,814 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 204 transitions. Word has length 148 [2023-12-24 15:52:09,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:52:09,815 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 204 transitions. [2023-12-24 15:52:09,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.615384615384615) internal successors, (73), 15 states have internal predecessors, (73), 4 states have call successors, (38), 3 states have call predecessors, (38), 5 states have return successors, (38), 2 states have call predecessors, (38), 4 states have call successors, (38) [2023-12-24 15:52:09,815 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 204 transitions. [2023-12-24 15:52:09,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 15:52:09,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:52:09,816 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:09,826 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 15:52:10,026 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 15:52:10,027 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:52:10,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:52:10,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1211523156, now seen corresponding path program 1 times [2023-12-24 15:52:10,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:52:10,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69966374] [2023-12-24 15:52:10,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:52:10,028 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 15:52:10,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:52:10,033 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 15:52:10,034 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 15:52:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:52:10,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-24 15:52:10,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:52:12,344 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 15:52:13,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2023-12-24 15:52:14,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 51 [2023-12-24 15:52:16,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 57 [2023-12-24 15:52:18,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 55 [2023-12-24 15:52:21,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 66 [2023-12-24 15:52:22,400 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 289 proven. 295 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-24 15:52:22,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:52:25,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:52:25,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69966374] [2023-12-24 15:52:25,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69966374] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:52:25,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1874730885] [2023-12-24 15:52:25,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:52:25,158 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:52:25,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:52:25,159 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:52:25,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-24 15:52:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:52:26,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 15:52:26,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:52:27,226 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 15:52:28,199 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 33 treesize of output 17 [2023-12-24 15:52:28,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2023-12-24 15:52:28,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2023-12-24 15:52:29,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2023-12-24 15:52:32,193 INFO L349 Elim1Store]: treesize reduction 3, result has 97.2 percent of original size [2023-12-24 15:52:32,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 82 treesize of output 147 [2023-12-24 15:52:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 221 proven. 295 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 15:52:33,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:52:51,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1874730885] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:52:51,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:52:51,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 14] total 51 [2023-12-24 15:52:51,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34364945] [2023-12-24 15:52:51,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:52:51,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-24 15:52:51,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:52:51,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-24 15:52:51,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=462, Invalid=3569, Unknown=1, NotChecked=0, Total=4032 [2023-12-24 15:52:51,514 INFO L87 Difference]: Start difference. First operand 162 states and 204 transitions. Second operand has 52 states, 44 states have (on average 3.227272727272727) internal successors, (142), 40 states have internal predecessors, (142), 15 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 13 states have call predecessors, (38), 15 states have call successors, (38) [2023-12-24 15:52:55,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:53:02,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:53:06,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:53:54,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.75s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:54:00,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.47s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:54:04,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:54:09,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:54:09,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:54:09,830 INFO L93 Difference]: Finished difference Result 508 states and 629 transitions. [2023-12-24 15:54:09,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-24 15:54:09,831 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 44 states have (on average 3.227272727272727) internal successors, (142), 40 states have internal predecessors, (142), 15 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 13 states have call predecessors, (38), 15 states have call successors, (38) Word has length 150 [2023-12-24 15:54:09,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:54:09,833 INFO L225 Difference]: With dead ends: 508 [2023-12-24 15:54:09,833 INFO L226 Difference]: Without dead ends: 377 [2023-12-24 15:54:09,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 294 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4209 ImplicationChecksByTransitivity, 62.9s TimeCoverageRelationStatistics Valid=2383, Invalid=12867, Unknown=2, NotChecked=0, Total=15252 [2023-12-24 15:54:09,836 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 2334 mSDsluCounter, 2907 mSDsCounter, 0 mSdLazyCounter, 2683 mSolverCounterSat, 312 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2334 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 2999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 2683 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.6s IncrementalHoareTripleChecker+Time [2023-12-24 15:54:09,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2334 Valid, 3057 Invalid, 2999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 2683 Invalid, 4 Unknown, 0 Unchecked, 43.6s Time] [2023-12-24 15:54:09,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-24 15:54:09,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 356. [2023-12-24 15:54:09,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 301 states have (on average 1.2458471760797343) internal successors, (375), 305 states have internal predecessors, (375), 35 states have call successors, (35), 19 states have call predecessors, (35), 19 states have return successors, (35), 31 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-24 15:54:09,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 445 transitions. [2023-12-24 15:54:09,882 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 445 transitions. Word has length 150 [2023-12-24 15:54:09,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:54:09,883 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 445 transitions. [2023-12-24 15:54:09,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 44 states have (on average 3.227272727272727) internal successors, (142), 40 states have internal predecessors, (142), 15 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 13 states have call predecessors, (38), 15 states have call successors, (38) [2023-12-24 15:54:09,883 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 445 transitions. [2023-12-24 15:54:09,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 15:54:09,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:54:09,885 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:54:09,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2023-12-24 15:54:10,103 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 15:54:10,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 15:54:10,303 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:54:10,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:54:10,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1149483542, now seen corresponding path program 1 times [2023-12-24 15:54:10,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:54:10,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423807199] [2023-12-24 15:54:10,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:54:10,304 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 15:54:10,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:54:10,305 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 15:54:10,306 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 15:54:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:54:11,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 69 conjunts are in the unsatisfiable core [2023-12-24 15:54:11,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:54:13,405 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 15:54:14,547 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 33 treesize of output 17 [2023-12-24 15:54:15,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 29 [2023-12-24 15:54:17,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 53 [2023-12-24 15:54:20,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 65 [2023-12-24 15:54:26,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 97 [2023-12-24 15:54:28,286 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:54:28,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 166 treesize of output 86 [2023-12-24 15:54:28,886 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 343 proven. 267 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-24 15:54:28,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:54:43,134 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:54:43,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1423807199] [2023-12-24 15:54:43,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1423807199] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:54:43,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [83557328] [2023-12-24 15:54:43,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:54:43,134 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:54:43,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:54:43,135 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:54:43,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-24 15:54:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:54:44,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-24 15:54:44,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:54:47,436 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 15:54:50,206 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 33 treesize of output 17 [2023-12-24 15:54:52,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 41 [2023-12-24 15:54:55,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 48 [2023-12-24 15:55:00,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 64 [2023-12-24 15:55:10,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 107 [2023-12-24 15:55:17,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 194 treesize of output 102 [2023-12-24 15:55:18,782 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 344 proven. 267 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-24 15:55:18,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:56:31,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [83557328] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:56:31,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:56:31,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 45] total 83 [2023-12-24 15:56:31,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302134889] [2023-12-24 15:56:31,652 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:56:31,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2023-12-24 15:56:31,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:56:31,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2023-12-24 15:56:31,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2525, Invalid=10813, Unknown=2, NotChecked=0, Total=13340 [2023-12-24 15:56:31,656 INFO L87 Difference]: Start difference. First operand 356 states and 445 transitions. Second operand has 84 states, 70 states have (on average 2.4285714285714284) internal successors, (170), 68 states have internal predecessors, (170), 24 states have call successors, (38), 21 states have call predecessors, (38), 24 states have return successors, (38), 16 states have call predecessors, (38), 24 states have call successors, (38) [2023-12-24 15:57:31,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:57:31,548 INFO L93 Difference]: Finished difference Result 765 states and 954 transitions. [2023-12-24 15:57:31,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-24 15:57:31,550 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 70 states have (on average 2.4285714285714284) internal successors, (170), 68 states have internal predecessors, (170), 24 states have call successors, (38), 21 states have call predecessors, (38), 24 states have return successors, (38), 16 states have call predecessors, (38), 24 states have call successors, (38) Word has length 150 [2023-12-24 15:57:31,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:57:31,551 INFO L225 Difference]: With dead ends: 765 [2023-12-24 15:57:31,551 INFO L226 Difference]: Without dead ends: 444 [2023-12-24 15:57:31,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 302 SyntacticMatches, 2 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9855 ImplicationChecksByTransitivity, 146.7s TimeCoverageRelationStatistics Valid=5145, Invalid=20610, Unknown=5, NotChecked=0, Total=25760 [2023-12-24 15:57:31,557 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 1674 mSDsluCounter, 3454 mSDsCounter, 0 mSdLazyCounter, 2822 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1680 SdHoareTripleChecker+Valid, 3597 SdHoareTripleChecker+Invalid, 3071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 2822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2023-12-24 15:57:31,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1680 Valid, 3597 Invalid, 3071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 2822 Invalid, 0 Unknown, 0 Unchecked, 14.4s Time] [2023-12-24 15:57:31,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-12-24 15:57:31,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 358. [2023-12-24 15:57:31,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 302 states have (on average 1.2384105960264902) internal successors, (374), 306 states have internal predecessors, (374), 35 states have call successors, (35), 20 states have call predecessors, (35), 20 states have return successors, (35), 31 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-24 15:57:31,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 444 transitions. [2023-12-24 15:57:31,631 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 444 transitions. Word has length 150 [2023-12-24 15:57:31,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:57:31,633 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 444 transitions. [2023-12-24 15:57:31,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 70 states have (on average 2.4285714285714284) internal successors, (170), 68 states have internal predecessors, (170), 24 states have call successors, (38), 21 states have call predecessors, (38), 24 states have return successors, (38), 16 states have call predecessors, (38), 24 states have call successors, (38) [2023-12-24 15:57:31,633 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 444 transitions. [2023-12-24 15:57:31,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 15:57:31,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:57:31,634 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:57:31,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2023-12-24 15:57:31,856 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 15:57:32,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 15:57:32,056 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:57:32,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:57:32,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1562853800, now seen corresponding path program 1 times [2023-12-24 15:57:32,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:57:32,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947841469] [2023-12-24 15:57:32,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:57:32,057 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 15:57:32,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:57:32,058 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 15:57:32,080 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 15:57:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:57:33,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 71 conjunts are in the unsatisfiable core [2023-12-24 15:57:33,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:57:35,086 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 15:57:36,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2023-12-24 15:57:38,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 41 [2023-12-24 15:57:39,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2023-12-24 15:57:42,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 59 [2023-12-24 15:57:48,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 95 [2023-12-24 15:57:51,306 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:57:51,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 131 treesize of output 75 [2023-12-24 15:57:51,820 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 333 proven. 273 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-24 15:57:51,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:58:53,469 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:58:53,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947841469] [2023-12-24 15:58:53,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947841469] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:58:53,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1329173073] [2023-12-24 15:58:53,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:58:53,469 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:58:53,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:58:53,471 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:58:53,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-24 15:58:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:58:54,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 86 conjunts are in the unsatisfiable core [2023-12-24 15:58:54,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:58:58,487 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 15:59:02,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2023-12-24 15:59:08,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 51 [2023-12-24 15:59:11,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 49 [2023-12-24 15:59:17,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 70 [2023-12-24 15:59:30,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 118 [2023-12-24 15:59:56,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 117 [2023-12-24 16:00:05,179 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 347 proven. 264 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-24 16:00:05,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:02:01,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1329173073] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:02:01,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:02:01,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 52] total 97 [2023-12-24 16:02:01,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145794331] [2023-12-24 16:02:01,840 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:02:01,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-12-24 16:02:01,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:02:01,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-12-24 16:02:01,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3072, Invalid=13687, Unknown=11, NotChecked=0, Total=16770 [2023-12-24 16:02:01,844 INFO L87 Difference]: Start difference. First operand 358 states and 444 transitions. Second operand has 98 states, 81 states have (on average 2.0617283950617282) internal successors, (167), 75 states have internal predecessors, (167), 23 states have call successors, (38), 21 states have call predecessors, (38), 23 states have return successors, (38), 20 states have call predecessors, (38), 23 states have call successors, (38) [2023-12-24 16:03:15,327 WARN L293 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 266 DAG size of output: 183 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 16:03:36,531 WARN L293 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 267 DAG size of output: 184 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 16:04:04,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:04:29,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:05:01,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:05:01,021 INFO L93 Difference]: Finished difference Result 862 states and 1070 transitions. [2023-12-24 16:05:01,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-12-24 16:05:01,024 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 81 states have (on average 2.0617283950617282) internal successors, (167), 75 states have internal predecessors, (167), 23 states have call successors, (38), 21 states have call predecessors, (38), 23 states have return successors, (38), 20 states have call predecessors, (38), 23 states have call successors, (38) Word has length 150 [2023-12-24 16:05:01,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:05:01,026 INFO L225 Difference]: With dead ends: 862 [2023-12-24 16:05:01,026 INFO L226 Difference]: Without dead ends: 539 [2023-12-24 16:05:01,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 288 SyntacticMatches, 2 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12974 ImplicationChecksByTransitivity, 340.6s TimeCoverageRelationStatistics Valid=7187, Invalid=29471, Unknown=14, NotChecked=0, Total=36672 [2023-12-24 16:05:01,030 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 1225 mSDsluCounter, 7267 mSDsCounter, 0 mSdLazyCounter, 5371 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 7474 SdHoareTripleChecker+Invalid, 5555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 5371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.9s IncrementalHoareTripleChecker+Time [2023-12-24 16:05:01,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1232 Valid, 7474 Invalid, 5555 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [184 Valid, 5371 Invalid, 0 Unknown, 0 Unchecked, 62.9s Time] [2023-12-24 16:05:01,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2023-12-24 16:05:01,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 322. [2023-12-24 16:05:01,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 270 states have (on average 1.2259259259259259) internal successors, (331), 272 states have internal predecessors, (331), 31 states have call successors, (31), 20 states have call predecessors, (31), 20 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-24 16:05:01,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 393 transitions. [2023-12-24 16:05:01,108 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 393 transitions. Word has length 150 [2023-12-24 16:05:01,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:05:01,108 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 393 transitions. [2023-12-24 16:05:01,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 81 states have (on average 2.0617283950617282) internal successors, (167), 75 states have internal predecessors, (167), 23 states have call successors, (38), 21 states have call predecessors, (38), 23 states have return successors, (38), 20 states have call predecessors, (38), 23 states have call successors, (38) [2023-12-24 16:05:01,108 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 393 transitions. [2023-12-24 16:05:01,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 16:05:01,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:05:01,109 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:05:01,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-12-24 16:05:01,331 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 16:05:01,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:05:01,519 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:05:01,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:05:01,519 INFO L85 PathProgramCache]: Analyzing trace with hash 985623148, now seen corresponding path program 1 times [2023-12-24 16:05:01,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:05:01,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029468542] [2023-12-24 16:05:01,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:05:01,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:05:01,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:05:01,521 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 16:05:01,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-24 16:05:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:05:02,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-24 16:05:02,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:05:04,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:05:05,669 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 22 treesize of output 21 [2023-12-24 16:05:06,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 29 [2023-12-24 16:05:08,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 49 [2023-12-24 16:05:10,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 70 [2023-12-24 16:05:14,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 68 [2023-12-24 16:05:21,846 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:05:21,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 109 treesize of output 57 [2023-12-24 16:05:23,727 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 279 proven. 298 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-12-24 16:05:23,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:05:26,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:05:26,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029468542] [2023-12-24 16:05:26,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029468542] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:05:26,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1788256867] [2023-12-24 16:05:26,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:05:26,814 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:05:26,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:05:26,815 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:05:26,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-24 16:05:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:05:28,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 67 conjunts are in the unsatisfiable core [2023-12-24 16:05:28,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:05:30,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:05:33,415 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 34 treesize of output 18 [2023-12-24 16:05:37,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 35 [2023-12-24 16:05:40,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 55 [2023-12-24 16:05:46,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 68 [2023-12-24 16:05:50,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 70 Received shutdown request... [2023-12-24 16:05:57,737 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 16:05:57,737 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 16:05:57,737 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 16:05:57,883 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 16:05:57,894 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 (16)] Ended with exit code 0 [2023-12-24 16:05:58,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2023-12-24 16:05:58,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:05:58,284 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 151 with TraceHistMax 19,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-13-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-12-1 context. [2023-12-24 16:05:58,288 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:05:58,292 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 16:05:58,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 04:05:58 BoogieIcfgContainer [2023-12-24 16:05:58,293 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 16:05:58,294 INFO L158 Benchmark]: Toolchain (without parser) took 869696.73ms. Allocated memory was 186.6MB in the beginning and 596.6MB in the end (delta: 410.0MB). Free memory was 132.5MB in the beginning and 435.4MB in the end (delta: -302.9MB). Peak memory consumption was 107.8MB. Max. memory is 8.0GB. [2023-12-24 16:05:58,294 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 186.6MB. Free memory was 134.1MB in the beginning and 133.9MB in the end (delta: 171.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 16:05:58,294 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.93ms. Allocated memory is still 186.6MB. Free memory was 132.0MB in the beginning and 115.6MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-24 16:05:58,294 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.17ms. Allocated memory is still 186.6MB. Free memory was 115.6MB in the beginning and 112.0MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 16:05:58,294 INFO L158 Benchmark]: Boogie Preprocessor took 68.22ms. Allocated memory is still 186.6MB. Free memory was 112.0MB in the beginning and 106.3MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-24 16:05:58,294 INFO L158 Benchmark]: RCFGBuilder took 1143.88ms. Allocated memory was 186.6MB in the beginning and 287.3MB in the end (delta: 100.7MB). Free memory was 105.7MB in the beginning and 248.3MB in the end (delta: -142.6MB). Peak memory consumption was 52.5MB. Max. memory is 8.0GB. [2023-12-24 16:05:58,295 INFO L158 Benchmark]: TraceAbstraction took 868127.19ms. Allocated memory was 287.3MB in the beginning and 596.6MB in the end (delta: 309.3MB). Free memory was 247.8MB in the beginning and 435.4MB in the end (delta: -187.6MB). Peak memory consumption was 121.4MB. Max. memory is 8.0GB. [2023-12-24 16:05:58,295 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 186.6MB. Free memory was 134.1MB in the beginning and 133.9MB in the end (delta: 171.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 287.93ms. Allocated memory is still 186.6MB. Free memory was 132.0MB in the beginning and 115.6MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 63.17ms. Allocated memory is still 186.6MB. Free memory was 115.6MB in the beginning and 112.0MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 68.22ms. Allocated memory is still 186.6MB. Free memory was 112.0MB in the beginning and 106.3MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 1143.88ms. Allocated memory was 186.6MB in the beginning and 287.3MB in the end (delta: 100.7MB). Free memory was 105.7MB in the beginning and 248.3MB in the end (delta: -142.6MB). Peak memory consumption was 52.5MB. Max. memory is 8.0GB. * TraceAbstraction took 868127.19ms. Allocated memory was 287.3MB in the beginning and 596.6MB in the end (delta: 309.3MB). Free memory was 247.8MB in the beginning and 435.4MB in the end (delta: -187.6MB). Peak memory consumption was 121.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 151 with TraceHistMax 19,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-13-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-12-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 98 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 868.1s, OverallIterations: 10, TraceHistogramMax: 19, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 332.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 6572 SdHoareTripleChecker+Valid, 129.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6559 mSDsluCounter, 17381 SdHoareTripleChecker+Invalid, 126.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16257 mSDsCounter, 1056 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12916 IncrementalHoareTripleChecker+Invalid, 13976 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1056 mSolverCounterUnsat, 1124 mSDtfsCounter, 12916 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2995 GetRequests, 2367 SyntacticMatches, 11 SemanticMatches, 617 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 28148 ImplicationChecksByTransitivity, 562.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=358occurred in iteration=8, InterpolantAutomatonStates: 305, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 366 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 9.6s SatisfiabilityAnalysisTime, 463.4s InterpolantComputationTime, 2072 NumberOfCodeBlocks, 2072 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2352 ConstructedInterpolants, 663 QuantifiedInterpolants, 81895 SizeOfPredicates, 299 NumberOfNonLiveVariables, 5012 ConjunctsInSsa, 515 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 7517/10944 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown