/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-s_file-68.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 18:31:14,630 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 18:31:14,703 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 18:31:14,709 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 18:31:14,709 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 18:31:14,733 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 18:31:14,733 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 18:31:14,734 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 18:31:14,734 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 18:31:14,737 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 18:31:14,737 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 18:31:14,738 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 18:31:14,738 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 18:31:14,739 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 18:31:14,740 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 18:31:14,740 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 18:31:14,740 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 18:31:14,740 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 18:31:14,740 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 18:31:14,741 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 18:31:14,741 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 18:31:14,741 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 18:31:14,741 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 18:31:14,741 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 18:31:14,741 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 18:31:14,742 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 18:31:14,742 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 18:31:14,742 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 18:31:14,742 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 18:31:14,742 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 18:31:14,743 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 18:31:14,743 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 18:31:14,743 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 18:31:14,743 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 18:31:14,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 18:31:14,744 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 18:31:14,744 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 18:31:14,744 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 18:31:14,744 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 18:31:14,744 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 18:31:14,744 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 18:31:14,745 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 18:31:14,745 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 18:31:14,745 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 18:31:14,745 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 18:31:14,745 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 18:31:14,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 18:31:14,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 18:31:14,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 18:31:14,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 18:31:14,953 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 18:31:14,954 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 18:31:14,955 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-68.i [2023-12-24 18:31:16,087 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 18:31:16,296 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 18:31:16,296 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-68.i [2023-12-24 18:31:16,306 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f614532f7/ab71762459f844a388421d5ca8d0b738/FLAG825ca5d5d [2023-12-24 18:31:16,329 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f614532f7/ab71762459f844a388421d5ca8d0b738 [2023-12-24 18:31:16,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 18:31:16,332 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 18:31:16,334 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 18:31:16,334 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 18:31:16,338 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 18:31:16,338 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 06:31:16" (1/1) ... [2023-12-24 18:31:16,339 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b95afda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:31:16, skipping insertion in model container [2023-12-24 18:31:16,339 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 06:31:16" (1/1) ... [2023-12-24 18:31:16,368 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 18:31:16,551 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-s_file-68.i[916,929] [2023-12-24 18:31:16,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 18:31:16,693 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 18:31:16,730 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-s_file-68.i[916,929] [2023-12-24 18:31:16,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 18:31:16,839 INFO L206 MainTranslator]: Completed translation [2023-12-24 18:31:16,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:31:16 WrapperNode [2023-12-24 18:31:16,840 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 18:31:16,841 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 18:31:16,841 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 18:31:16,841 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 18:31:16,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:31:16" (1/1) ... [2023-12-24 18:31:16,883 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:31:16" (1/1) ... [2023-12-24 18:31:16,918 INFO L138 Inliner]: procedures = 39, calls = 171, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 504 [2023-12-24 18:31:16,918 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 18:31:16,919 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 18:31:16,919 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 18:31:16,919 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 18:31:16,928 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:31:16" (1/1) ... [2023-12-24 18:31:16,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:31:16" (1/1) ... [2023-12-24 18:31:16,932 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:31:16" (1/1) ... [2023-12-24 18:31:16,947 INFO L175 MemorySlicer]: Split 142 memory accesses to 2 slices as follows [2, 140]. 99 percent of accesses are in the largest equivalence class. The 19 initializations are split as follows [2, 17]. The 20 writes are split as follows [0, 20]. [2023-12-24 18:31:16,947 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:31:16" (1/1) ... [2023-12-24 18:31:16,947 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:31:16" (1/1) ... [2023-12-24 18:31:16,996 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:31:16" (1/1) ... [2023-12-24 18:31:16,999 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:31:16" (1/1) ... [2023-12-24 18:31:17,002 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:31:16" (1/1) ... [2023-12-24 18:31:17,004 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:31:16" (1/1) ... [2023-12-24 18:31:17,018 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 18:31:17,019 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 18:31:17,019 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 18:31:17,019 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 18:31:17,020 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:31:16" (1/1) ... [2023-12-24 18:31:17,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 18:31:17,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 18:31:17,049 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 18:31:17,082 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 18:31:17,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 18:31:17,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2023-12-24 18:31:17,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2023-12-24 18:31:17,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2023-12-24 18:31:17,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2023-12-24 18:31:17,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 18:31:17,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 18:31:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 18:31:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 18:31:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 18:31:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 18:31:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 18:31:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 18:31:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 18:31:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 18:31:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2023-12-24 18:31:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2023-12-24 18:31:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 18:31:17,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 18:31:17,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 18:31:17,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 18:31:17,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 18:31:17,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 18:31:17,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 18:31:17,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 18:31:17,097 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 18:31:17,097 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 18:31:17,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 18:31:17,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 18:31:17,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 18:31:17,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 18:31:17,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 18:31:17,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 18:31:17,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 18:31:17,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 18:31:17,234 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 18:31:17,236 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 18:31:19,494 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 18:31:19,533 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 18:31:19,533 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 18:31:19,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 06:31:19 BoogieIcfgContainer [2023-12-24 18:31:19,534 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 18:31:19,535 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 18:31:19,535 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 18:31:19,538 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 18:31:19,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 06:31:16" (1/3) ... [2023-12-24 18:31:19,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d76bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 06:31:19, skipping insertion in model container [2023-12-24 18:31:19,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:31:16" (2/3) ... [2023-12-24 18:31:19,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d76bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 06:31:19, skipping insertion in model container [2023-12-24 18:31:19,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 06:31:19" (3/3) ... [2023-12-24 18:31:19,540 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-68.i [2023-12-24 18:31:19,553 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 18:31:19,553 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 18:31:19,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 18:31:19,595 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;@9ead78f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 18:31:19,595 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 18:31:19,603 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 87 states have (on average 1.4482758620689655) internal successors, (126), 88 states have internal predecessors, (126), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 18:31:19,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-24 18:31:19,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:31:19,616 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:19,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:31:19,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:31:19,624 INFO L85 PathProgramCache]: Analyzing trace with hash 48315247, now seen corresponding path program 1 times [2023-12-24 18:31:19,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:31:19,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12558103] [2023-12-24 18:31:19,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:31:19,636 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 18:31:19,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:31:19,638 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 18:31:19,668 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 18:31:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:31:20,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 18:31:20,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:31:20,228 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-12-24 18:31:20,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:31:20,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:31:20,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12558103] [2023-12-24 18:31:20,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12558103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:31:20,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:31:20,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 18:31:20,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083356675] [2023-12-24 18:31:20,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:31:20,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 18:31:20,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:31:20,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 18:31:20,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 18:31:20,284 INFO L87 Difference]: Start difference. First operand has 107 states, 87 states have (on average 1.4482758620689655) internal successors, (126), 88 states have internal predecessors, (126), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 18:31:20,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:31:20,346 INFO L93 Difference]: Finished difference Result 211 states and 335 transitions. [2023-12-24 18:31:20,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 18:31:20,349 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 141 [2023-12-24 18:31:20,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:31:20,355 INFO L225 Difference]: With dead ends: 211 [2023-12-24 18:31:20,355 INFO L226 Difference]: Without dead ends: 105 [2023-12-24 18:31:20,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 140 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 18:31:20,360 INFO L413 NwaCegarLoop]: 151 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, 151 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 18:31:20,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 151 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 18:31:20,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-24 18:31:20,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-12-24 18:31:20,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 86 states have (on average 1.4069767441860466) internal successors, (121), 86 states have internal predecessors, (121), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 18:31:20,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 155 transitions. [2023-12-24 18:31:20,394 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 155 transitions. Word has length 141 [2023-12-24 18:31:20,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:31:20,394 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 155 transitions. [2023-12-24 18:31:20,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 18:31:20,395 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 155 transitions. [2023-12-24 18:31:20,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-24 18:31:20,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:31:20,397 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:20,414 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 18:31:20,611 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 18:31:20,612 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:31:20,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:31:20,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1693884809, now seen corresponding path program 1 times [2023-12-24 18:31:20,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:31:20,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252558273] [2023-12-24 18:31:20,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:31:20,614 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 18:31:20,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:31:20,615 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 18:31:20,618 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 18:31:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:31:21,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 18:31:21,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:31:21,118 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 18:31:21,118 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:31:21,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:31:21,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252558273] [2023-12-24 18:31:21,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252558273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:31:21,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:31:21,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:31:21,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87033118] [2023-12-24 18:31:21,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:31:21,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:31:21,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:31:21,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:31:21,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:31:21,121 INFO L87 Difference]: Start difference. First operand 105 states and 155 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:31:21,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:31:21,208 INFO L93 Difference]: Finished difference Result 229 states and 338 transitions. [2023-12-24 18:31:21,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 18:31:21,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 141 [2023-12-24 18:31:21,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:31:21,214 INFO L225 Difference]: With dead ends: 229 [2023-12-24 18:31:21,214 INFO L226 Difference]: Without dead ends: 125 [2023-12-24 18:31:21,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 18:31:21,216 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 58 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:31:21,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 625 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 18:31:21,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-24 18:31:21,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 108. [2023-12-24 18:31:21,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 89 states have (on average 1.3932584269662922) internal successors, (124), 89 states have internal predecessors, (124), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 18:31:21,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 158 transitions. [2023-12-24 18:31:21,226 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 158 transitions. Word has length 141 [2023-12-24 18:31:21,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:31:21,227 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 158 transitions. [2023-12-24 18:31:21,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:31:21,228 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 158 transitions. [2023-12-24 18:31:21,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-24 18:31:21,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:31:21,230 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:21,246 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 18:31:21,446 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 18:31:21,446 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:31:21,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:31:21,447 INFO L85 PathProgramCache]: Analyzing trace with hash -774864519, now seen corresponding path program 1 times [2023-12-24 18:31:21,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:31:21,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793592764] [2023-12-24 18:31:21,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:31:21,448 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 18:31:21,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:31:21,450 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 18:31:21,480 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 18:31:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:31:21,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 18:31:21,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:31:21,936 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 18:31:21,937 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:31:21,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:31:21,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793592764] [2023-12-24 18:31:21,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793592764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:31:21,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:31:21,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:31:21,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382539174] [2023-12-24 18:31:21,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:31:21,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:31:21,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:31:21,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:31:21,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:31:21,939 INFO L87 Difference]: Start difference. First operand 108 states and 158 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:31:22,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:31:22,016 INFO L93 Difference]: Finished difference Result 235 states and 344 transitions. [2023-12-24 18:31:22,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 18:31:22,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 141 [2023-12-24 18:31:22,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:31:22,019 INFO L225 Difference]: With dead ends: 235 [2023-12-24 18:31:22,019 INFO L226 Difference]: Without dead ends: 128 [2023-12-24 18:31:22,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 18:31:22,020 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 55 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:31:22,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 630 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 18:31:22,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-12-24 18:31:22,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 109. [2023-12-24 18:31:22,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 90 states have (on average 1.3888888888888888) internal successors, (125), 90 states have internal predecessors, (125), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 18:31:22,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2023-12-24 18:31:22,027 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 141 [2023-12-24 18:31:22,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:31:22,027 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2023-12-24 18:31:22,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:31:22,028 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2023-12-24 18:31:22,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-24 18:31:22,029 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:31:22,029 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:22,053 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 18:31:22,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:31:22,243 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:31:22,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:31:22,243 INFO L85 PathProgramCache]: Analyzing trace with hash -597135420, now seen corresponding path program 1 times [2023-12-24 18:31:22,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:31:22,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075120477] [2023-12-24 18:31:22,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:31:22,244 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 18:31:22,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:31:22,265 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:31:22,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 18:31:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:31:22,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 18:31:22,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:31:22,719 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 18:31:22,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:31:22,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:31:22,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075120477] [2023-12-24 18:31:22,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075120477] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:31:22,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:31:22,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:31:22,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304707012] [2023-12-24 18:31:22,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:31:22,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:31:22,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:31:22,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:31:22,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:31:22,721 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:31:22,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:31:22,790 INFO L93 Difference]: Finished difference Result 244 states and 356 transitions. [2023-12-24 18:31:22,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 18:31:22,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 143 [2023-12-24 18:31:22,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:31:22,792 INFO L225 Difference]: With dead ends: 244 [2023-12-24 18:31:22,792 INFO L226 Difference]: Without dead ends: 136 [2023-12-24 18:31:22,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 18:31:22,793 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 64 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 18:31:22,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 585 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 18:31:22,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-24 18:31:22,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 113. [2023-12-24 18:31:22,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 94 states have (on average 1.372340425531915) internal successors, (129), 94 states have internal predecessors, (129), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 18:31:22,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 163 transitions. [2023-12-24 18:31:22,800 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 163 transitions. Word has length 143 [2023-12-24 18:31:22,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:31:22,800 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 163 transitions. [2023-12-24 18:31:22,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:31:22,800 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 163 transitions. [2023-12-24 18:31:22,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-24 18:31:22,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:31:22,802 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:22,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 18:31:23,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:31:23,016 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:31:23,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:31:23,017 INFO L85 PathProgramCache]: Analyzing trace with hash -990162430, now seen corresponding path program 1 times [2023-12-24 18:31:23,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:31:23,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476241529] [2023-12-24 18:31:23,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:31:23,018 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 18:31:23,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:31:23,019 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 18:31:23,019 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 18:31:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:31:23,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 18:31:23,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:31:23,574 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 18:31:23,574 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:31:23,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:31:23,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476241529] [2023-12-24 18:31:23,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476241529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:31:23,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:31:23,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 18:31:23,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658979387] [2023-12-24 18:31:23,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:31:23,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 18:31:23,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:31:23,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 18:31:23,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 18:31:23,576 INFO L87 Difference]: Start difference. First operand 113 states and 163 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:31:23,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:31:23,856 INFO L93 Difference]: Finished difference Result 256 states and 368 transitions. [2023-12-24 18:31:23,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 18:31:23,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 143 [2023-12-24 18:31:23,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:31:23,857 INFO L225 Difference]: With dead ends: 256 [2023-12-24 18:31:23,857 INFO L226 Difference]: Without dead ends: 144 [2023-12-24 18:31:23,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-12-24 18:31:23,859 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 80 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 18:31:23,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 849 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 18:31:23,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-12-24 18:31:23,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 117. [2023-12-24 18:31:23,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 98 states have (on average 1.3571428571428572) internal successors, (133), 98 states have internal predecessors, (133), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 18:31:23,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 167 transitions. [2023-12-24 18:31:23,864 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 167 transitions. Word has length 143 [2023-12-24 18:31:23,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:31:23,865 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 167 transitions. [2023-12-24 18:31:23,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:31:23,865 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 167 transitions. [2023-12-24 18:31:23,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-24 18:31:23,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:31:23,866 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:23,881 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 18:31:24,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:31:24,082 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:31:24,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:31:24,083 INFO L85 PathProgramCache]: Analyzing trace with hash -932904128, now seen corresponding path program 1 times [2023-12-24 18:31:24,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:31:24,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509934697] [2023-12-24 18:31:24,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:31:24,083 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 18:31:24,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:31:24,084 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:31:24,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 18:31:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:31:24,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 18:31:24,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:31:24,558 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 18:31:24,558 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:31:24,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:31:24,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509934697] [2023-12-24 18:31:24,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509934697] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:31:24,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:31:24,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 18:31:24,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591033996] [2023-12-24 18:31:24,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:31:24,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 18:31:24,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:31:24,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 18:31:24,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-24 18:31:24,560 INFO L87 Difference]: Start difference. First operand 117 states and 167 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:31:24,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:31:24,895 INFO L93 Difference]: Finished difference Result 261 states and 366 transitions. [2023-12-24 18:31:24,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 18:31:24,896 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 143 [2023-12-24 18:31:24,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:31:24,897 INFO L225 Difference]: With dead ends: 261 [2023-12-24 18:31:24,897 INFO L226 Difference]: Without dead ends: 145 [2023-12-24 18:31:24,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2023-12-24 18:31:24,898 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 67 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 18:31:24,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 980 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 18:31:24,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-24 18:31:24,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 119. [2023-12-24 18:31:24,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 100 states have (on average 1.35) internal successors, (135), 100 states have internal predecessors, (135), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 18:31:24,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 169 transitions. [2023-12-24 18:31:24,907 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 169 transitions. Word has length 143 [2023-12-24 18:31:24,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:31:24,916 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 169 transitions. [2023-12-24 18:31:24,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:31:24,917 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 169 transitions. [2023-12-24 18:31:24,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-24 18:31:24,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:31:24,918 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:24,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 18:31:25,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:31:25,132 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:31:25,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:31:25,132 INFO L85 PathProgramCache]: Analyzing trace with hash -932844546, now seen corresponding path program 1 times [2023-12-24 18:31:25,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:31:25,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574705736] [2023-12-24 18:31:25,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:31:25,133 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 18:31:25,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:31:25,134 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 18:31:25,139 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 18:31:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:31:25,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 18:31:25,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:31:25,605 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 95 treesize of output 41 [2023-12-24 18:31:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 18:31:25,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:31:25,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:31:25,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574705736] [2023-12-24 18:31:25,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574705736] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:31:25,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:31:25,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:31:25,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932984675] [2023-12-24 18:31:25,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:31:25,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:31:25,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:31:25,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:31:25,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:31:25,631 INFO L87 Difference]: Start difference. First operand 119 states and 169 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:31:27,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:31:27,648 INFO L93 Difference]: Finished difference Result 243 states and 346 transitions. [2023-12-24 18:31:27,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 18:31:27,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 143 [2023-12-24 18:31:27,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:31:27,650 INFO L225 Difference]: With dead ends: 243 [2023-12-24 18:31:27,650 INFO L226 Difference]: Without dead ends: 125 [2023-12-24 18:31:27,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 18:31:27,651 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 167 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-24 18:31:27,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 423 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-24 18:31:27,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-24 18:31:27,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2023-12-24 18:31:27,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 100 states have (on average 1.34) internal successors, (134), 100 states have internal predecessors, (134), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 18:31:27,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 168 transitions. [2023-12-24 18:31:27,656 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 168 transitions. Word has length 143 [2023-12-24 18:31:27,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:31:27,657 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 168 transitions. [2023-12-24 18:31:27,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:31:27,657 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 168 transitions. [2023-12-24 18:31:27,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 18:31:27,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:31:27,658 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:27,671 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 18:31:27,871 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 18:31:27,871 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:31:27,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:31:27,872 INFO L85 PathProgramCache]: Analyzing trace with hash 188888196, now seen corresponding path program 1 times [2023-12-24 18:31:27,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:31:27,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160127554] [2023-12-24 18:31:27,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:31:27,872 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 18:31:27,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:31:27,874 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 18:31:27,876 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 18:31:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:31:28,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 18:31:28,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:31:28,377 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 95 treesize of output 41 [2023-12-24 18:31:28,413 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 18:31:28,413 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:31:28,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:31:28,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160127554] [2023-12-24 18:31:28,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160127554] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:31:28,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:31:28,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:31:28,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904399068] [2023-12-24 18:31:28,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:31:28,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:31:28,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:31:28,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:31:28,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:31:28,415 INFO L87 Difference]: Start difference. First operand 119 states and 168 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 18:31:31,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:31:31,140 INFO L93 Difference]: Finished difference Result 243 states and 344 transitions. [2023-12-24 18:31:31,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 18:31:31,141 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 145 [2023-12-24 18:31:31,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:31:31,142 INFO L225 Difference]: With dead ends: 243 [2023-12-24 18:31:31,142 INFO L226 Difference]: Without dead ends: 125 [2023-12-24 18:31:31,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 18:31:31,143 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 153 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-24 18:31:31,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 418 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-24 18:31:31,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-24 18:31:31,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2023-12-24 18:31:31,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 100 states have (on average 1.33) internal successors, (133), 100 states have internal predecessors, (133), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 18:31:31,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 167 transitions. [2023-12-24 18:31:31,147 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 167 transitions. Word has length 145 [2023-12-24 18:31:31,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:31:31,148 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 167 transitions. [2023-12-24 18:31:31,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 18:31:31,148 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 167 transitions. [2023-12-24 18:31:31,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 18:31:31,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:31:31,149 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:31,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 18:31:31,362 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 18:31:31,362 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:31:31,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:31:31,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1708422978, now seen corresponding path program 1 times [2023-12-24 18:31:31,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:31:31,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617381363] [2023-12-24 18:31:31,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:31:31,363 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 18:31:31,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:31:31,365 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 18:31:31,366 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 18:31:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:31:31,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 18:31:31,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:31:31,920 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:31:31,921 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 173 treesize of output 65 [2023-12-24 18:31:31,941 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 18:31:31,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:31:31,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:31:31,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617381363] [2023-12-24 18:31:31,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617381363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:31:31,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:31:31,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:31:31,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448858919] [2023-12-24 18:31:31,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:31:31,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:31:31,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:31:31,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:31:31,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:31:31,943 INFO L87 Difference]: Start difference. First operand 119 states and 167 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 18:31:34,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:31:34,224 INFO L93 Difference]: Finished difference Result 243 states and 342 transitions. [2023-12-24 18:31:34,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 18:31:34,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2023-12-24 18:31:34,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:31:34,226 INFO L225 Difference]: With dead ends: 243 [2023-12-24 18:31:34,226 INFO L226 Difference]: Without dead ends: 125 [2023-12-24 18:31:34,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 18:31:34,227 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 129 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-24 18:31:34,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 418 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-24 18:31:34,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-24 18:31:34,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2023-12-24 18:31:34,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 100 states have (on average 1.32) internal successors, (132), 100 states have internal predecessors, (132), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 18:31:34,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 166 transitions. [2023-12-24 18:31:34,231 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 166 transitions. Word has length 147 [2023-12-24 18:31:34,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:31:34,231 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 166 transitions. [2023-12-24 18:31:34,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 18:31:34,231 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 166 transitions. [2023-12-24 18:31:34,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-24 18:31:34,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:31:34,232 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:34,254 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 18:31:34,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:31:34,447 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:31:34,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:31:34,448 INFO L85 PathProgramCache]: Analyzing trace with hash 592450052, now seen corresponding path program 1 times [2023-12-24 18:31:34,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:31:34,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015747839] [2023-12-24 18:31:34,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:31:34,448 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 18:31:34,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:31:34,449 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:31:34,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 18:31:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:31:34,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 18:31:34,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:31:35,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:31:35,001 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 173 treesize of output 65 [2023-12-24 18:31:35,025 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-12-24 18:31:35,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:31:35,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:31:35,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015747839] [2023-12-24 18:31:35,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015747839] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:31:35,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:31:35,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:31:35,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209888693] [2023-12-24 18:31:35,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:31:35,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:31:35,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:31:35,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:31:35,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:31:35,027 INFO L87 Difference]: Start difference. First operand 119 states and 166 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 18:31:37,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:31:37,265 INFO L93 Difference]: Finished difference Result 243 states and 340 transitions. [2023-12-24 18:31:37,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 18:31:37,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 149 [2023-12-24 18:31:37,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:31:37,266 INFO L225 Difference]: With dead ends: 243 [2023-12-24 18:31:37,267 INFO L226 Difference]: Without dead ends: 125 [2023-12-24 18:31:37,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 18:31:37,267 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 120 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-24 18:31:37,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 412 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-24 18:31:37,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-24 18:31:37,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2023-12-24 18:31:37,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 100 states have (on average 1.31) internal successors, (131), 100 states have internal predecessors, (131), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 18:31:37,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 165 transitions. [2023-12-24 18:31:37,272 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 165 transitions. Word has length 149 [2023-12-24 18:31:37,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:31:37,272 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 165 transitions. [2023-12-24 18:31:37,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 18:31:37,273 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 165 transitions. [2023-12-24 18:31:37,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 18:31:37,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:31:37,273 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:37,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-24 18:31:37,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:31:37,488 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:31:37,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:31:37,488 INFO L85 PathProgramCache]: Analyzing trace with hash 833568894, now seen corresponding path program 1 times [2023-12-24 18:31:37,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:31:37,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641279895] [2023-12-24 18:31:37,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:31:37,489 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 18:31:37,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:31:37,490 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 18:31:37,492 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 18:40:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:40:46,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 18:40:46,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:40:51,101 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:40:51,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 211 treesize of output 67 [2023-12-24 18:40:55,626 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 18:40:55,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:40:55,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:40:55,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641279895] [2023-12-24 18:40:55,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641279895] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:40:55,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:40:55,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:40:55,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917435858] [2023-12-24 18:40:55,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:40:55,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:40:55,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:40:55,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:40:55,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:40:55,628 INFO L87 Difference]: Start difference. First operand 119 states and 165 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:41:18,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:41:34,340 WARN L293 SmtUtils]: Spent 8.92s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 18:41:40,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:41:42,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:41:43,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:41:47,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:41:49,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:41:51,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:41:53,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:41:58,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:42:00,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:42:04,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:42:05,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:42:08,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:42:10,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:42:14,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:42:17,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:42:19,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:42:19,154 INFO L93 Difference]: Finished difference Result 280 states and 384 transitions. [2023-12-24 18:42:19,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 18:42:19,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 151 [2023-12-24 18:42:19,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:42:19,167 INFO L225 Difference]: With dead ends: 280 [2023-12-24 18:42:19,167 INFO L226 Difference]: Without dead ends: 162 [2023-12-24 18:42:19,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 18:42:19,167 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 185 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.4s IncrementalHoareTripleChecker+Time [2023-12-24 18:42:19,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 291 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 309 Invalid, 2 Unknown, 0 Unchecked, 71.4s Time] [2023-12-24 18:42:19,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-12-24 18:42:19,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 121. [2023-12-24 18:42:19,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 102 states have (on average 1.303921568627451) internal successors, (133), 102 states have internal predecessors, (133), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 18:42:19,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 167 transitions. [2023-12-24 18:42:19,172 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 167 transitions. Word has length 151 [2023-12-24 18:42:19,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:42:19,172 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 167 transitions. [2023-12-24 18:42:19,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:42:19,172 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 167 transitions. [2023-12-24 18:42:19,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 18:42:19,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:42:19,173 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:42:19,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 18:42:19,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:42:19,383 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:42:19,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:42:19,384 INFO L85 PathProgramCache]: Analyzing trace with hash -213081490, now seen corresponding path program 1 times [2023-12-24 18:42:19,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:42:19,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332572463] [2023-12-24 18:42:19,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:42:19,385 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 18:42:19,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:42:19,387 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:42:19,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 18:42:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:42:19,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 18:42:19,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:42:19,844 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 18:42:19,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:42:19,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:42:19,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332572463] [2023-12-24 18:42:19,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332572463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:42:19,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:42:19,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:42:19,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707031394] [2023-12-24 18:42:19,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:42:19,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:42:19,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:42:19,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:42:19,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:42:19,846 INFO L87 Difference]: Start difference. First operand 121 states and 167 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:42:23,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:42:23,227 INFO L93 Difference]: Finished difference Result 326 states and 443 transitions. [2023-12-24 18:42:23,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 18:42:23,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 151 [2023-12-24 18:42:23,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:42:23,228 INFO L225 Difference]: With dead ends: 326 [2023-12-24 18:42:23,229 INFO L226 Difference]: Without dead ends: 206 [2023-12-24 18:42:23,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:42:23,229 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 118 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-24 18:42:23,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 418 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-24 18:42:23,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-12-24 18:42:23,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 176. [2023-12-24 18:42:23,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 151 states have (on average 1.2913907284768211) internal successors, (195), 152 states have internal predecessors, (195), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-24 18:42:23,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 239 transitions. [2023-12-24 18:42:23,240 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 239 transitions. Word has length 151 [2023-12-24 18:42:23,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:42:23,240 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 239 transitions. [2023-12-24 18:42:23,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:42:23,240 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 239 transitions. [2023-12-24 18:42:23,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 18:42:23,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:42:23,241 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:42:23,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-24 18:42:23,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:42:23,453 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:42:23,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:42:23,454 INFO L85 PathProgramCache]: Analyzing trace with hash -166291752, now seen corresponding path program 1 times [2023-12-24 18:42:23,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:42:23,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798075155] [2023-12-24 18:42:23,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:42:23,455 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 18:42:23,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:42:23,456 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 18:42:23,460 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 18:42:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:42:24,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 18:42:24,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:42:24,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 18:42:24,180 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 18:42:24,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:42:24,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:42:24,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798075155] [2023-12-24 18:42:24,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798075155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:42:24,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:42:24,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 18:42:24,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024945969] [2023-12-24 18:42:24,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:42:24,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 18:42:24,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:42:24,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 18:42:24,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 18:42:24,182 INFO L87 Difference]: Start difference. First operand 176 states and 239 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:42:24,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:42:24,221 INFO L93 Difference]: Finished difference Result 351 states and 477 transitions. [2023-12-24 18:42:24,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 18:42:24,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 151 [2023-12-24 18:42:24,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:42:24,224 INFO L225 Difference]: With dead ends: 351 [2023-12-24 18:42:24,224 INFO L226 Difference]: Without dead ends: 176 [2023-12-24 18:42:24,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 18:42:24,225 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 0 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 18:42:24,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 288 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 18:42:24,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-12-24 18:42:24,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2023-12-24 18:42:24,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 151 states have (on average 1.2847682119205297) internal successors, (194), 152 states have internal predecessors, (194), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-24 18:42:24,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 238 transitions. [2023-12-24 18:42:24,231 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 238 transitions. Word has length 151 [2023-12-24 18:42:24,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:42:24,231 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 238 transitions. [2023-12-24 18:42:24,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:42:24,232 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 238 transitions. [2023-12-24 18:42:24,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 18:42:24,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:42:24,232 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:42:24,246 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 18:42:24,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:42:24,433 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:42:24,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:42:24,433 INFO L85 PathProgramCache]: Analyzing trace with hash -25743142, now seen corresponding path program 1 times [2023-12-24 18:42:24,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:42:24,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011327529] [2023-12-24 18:42:24,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:42:24,434 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 18:42:24,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:42:24,436 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:42:24,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-24 18:42:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:42:24,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 18:42:24,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:42:24,882 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:42:24,883 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 34 treesize of output 10 [2023-12-24 18:42:24,901 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 18:42:24,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:42:24,901 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:42:24,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011327529] [2023-12-24 18:42:24,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011327529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:42:24,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:42:24,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:42:24,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30806035] [2023-12-24 18:42:24,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:42:24,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:42:24,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:42:24,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:42:24,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:42:24,902 INFO L87 Difference]: Start difference. First operand 176 states and 238 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:42:28,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:42:28,005 INFO L93 Difference]: Finished difference Result 426 states and 575 transitions. [2023-12-24 18:42:28,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 18:42:28,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 151 [2023-12-24 18:42:28,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:42:28,007 INFO L225 Difference]: With dead ends: 426 [2023-12-24 18:42:28,007 INFO L226 Difference]: Without dead ends: 251 [2023-12-24 18:42:28,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 18:42:28,008 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 157 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-24 18:42:28,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 486 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-24 18:42:28,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-12-24 18:42:28,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 238. [2023-12-24 18:42:28,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 194 states have (on average 1.2525773195876289) internal successors, (243), 196 states have internal predecessors, (243), 39 states have call successors, (39), 4 states have call predecessors, (39), 4 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-24 18:42:28,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 321 transitions. [2023-12-24 18:42:28,031 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 321 transitions. Word has length 151 [2023-12-24 18:42:28,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:42:28,031 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 321 transitions. [2023-12-24 18:42:28,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:42:28,031 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 321 transitions. [2023-12-24 18:42:28,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 18:42:28,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:42:28,032 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:42:28,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-24 18:42:28,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:42:28,243 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:42:28,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:42:28,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1305606820, now seen corresponding path program 1 times [2023-12-24 18:42:28,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:42:28,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101248692] [2023-12-24 18:42:28,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:42:28,244 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 18:42:28,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:42:28,245 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 18:42:28,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-24 18:42:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:42:28,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 18:42:28,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:42:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 18:42:28,602 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:42:28,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:42:28,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101248692] [2023-12-24 18:42:28,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101248692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:42:28,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:42:28,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:42:28,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490787024] [2023-12-24 18:42:28,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:42:28,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:42:28,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:42:28,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:42:28,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:42:28,604 INFO L87 Difference]: Start difference. First operand 238 states and 321 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:42:28,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:42:28,742 INFO L93 Difference]: Finished difference Result 418 states and 561 transitions. [2023-12-24 18:42:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 18:42:28,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 151 [2023-12-24 18:42:28,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:42:28,743 INFO L225 Difference]: With dead ends: 418 [2023-12-24 18:42:28,743 INFO L226 Difference]: Without dead ends: 243 [2023-12-24 18:42:28,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 18:42:28,746 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 48 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:42:28,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 548 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 18:42:28,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-12-24 18:42:28,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 236. [2023-12-24 18:42:28,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 192 states have (on average 1.2447916666666667) internal successors, (239), 194 states have internal predecessors, (239), 39 states have call successors, (39), 4 states have call predecessors, (39), 4 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-24 18:42:28,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 317 transitions. [2023-12-24 18:42:28,758 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 317 transitions. Word has length 151 [2023-12-24 18:42:28,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:42:28,758 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 317 transitions. [2023-12-24 18:42:28,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:42:28,759 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 317 transitions. [2023-12-24 18:42:28,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 18:42:28,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:42:28,759 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:42:28,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 18:42:28,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:42:28,973 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:42:28,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:42:28,973 INFO L85 PathProgramCache]: Analyzing trace with hash -11407264, now seen corresponding path program 1 times [2023-12-24 18:42:28,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:42:28,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931620010] [2023-12-24 18:42:28,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:42:28,974 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 18:42:28,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:42:28,975 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:42:29,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-24 18:42:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:42:29,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 18:42:29,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:42:30,649 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 18:42:30,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:42:30,649 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:42:30,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931620010] [2023-12-24 18:42:30,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931620010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:42:30,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:42:30,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 18:42:30,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255711946] [2023-12-24 18:42:30,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:42:30,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:42:30,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:42:30,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:42:30,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:42:30,650 INFO L87 Difference]: Start difference. First operand 236 states and 317 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:42:34,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:42:42,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:42:42,190 INFO L93 Difference]: Finished difference Result 479 states and 635 transitions. [2023-12-24 18:42:42,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 18:42:42,200 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 151 [2023-12-24 18:42:42,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:42:42,201 INFO L225 Difference]: With dead ends: 479 [2023-12-24 18:42:42,202 INFO L226 Difference]: Without dead ends: 306 [2023-12-24 18:42:42,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 18:42:42,202 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 91 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-12-24 18:42:42,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 442 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 268 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2023-12-24 18:42:42,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-12-24 18:42:42,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 239. [2023-12-24 18:42:42,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 195 states have (on average 1.2461538461538462) internal successors, (243), 197 states have internal predecessors, (243), 39 states have call successors, (39), 4 states have call predecessors, (39), 4 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-24 18:42:42,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 321 transitions. [2023-12-24 18:42:42,232 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 321 transitions. Word has length 151 [2023-12-24 18:42:42,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:42:42,234 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 321 transitions. [2023-12-24 18:42:42,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:42:42,234 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 321 transitions. [2023-12-24 18:42:42,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 18:42:42,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:42:42,235 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:42:42,250 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 (17)] Ended with exit code 0 [2023-12-24 18:42:42,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:42:42,436 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:42:42,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:42:42,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1058057648, now seen corresponding path program 1 times [2023-12-24 18:42:42,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:42:42,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540551770] [2023-12-24 18:42:42,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:42:42,437 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 18:42:42,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:42:42,438 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:42:42,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-24 18:45:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:45:26,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 18:45:26,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:45:32,574 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:45:32,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 66 [2023-12-24 18:45:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 18:45:38,105 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:45:38,105 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:45:38,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540551770] [2023-12-24 18:45:38,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540551770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:45:38,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:45:38,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:45:38,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571781014] [2023-12-24 18:45:38,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:45:38,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:45:38,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:45:38,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:45:38,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:45:38,107 INFO L87 Difference]: Start difference. First operand 239 states and 321 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 18:45:40,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:45:41,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:45:46,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:45:53,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:45:57,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] Received shutdown request... [2023-12-24 18:46:03,427 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 18:46:03,460 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 (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 18:46:03,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 18:46:03,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:46:03,867 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 8 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.7s IncrementalHoareTripleChecker+Time [2023-12-24 18:46:03,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 108 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 25.7s Time] [2023-12-24 18:46:03,868 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 18:46:03,888 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 (18)] Ended with exit code 0 [2023-12-24 18:46:04,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:46:04,070 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (239states) and FLOYD_HOARE automaton (currently 4 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (48 states constructed, input type IntersectNwa). [2023-12-24 18:46:04,073 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:46:04,075 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 18:46:04,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 06:46:04 BoogieIcfgContainer [2023-12-24 18:46:04,076 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 18:46:04,076 INFO L158 Benchmark]: Toolchain (without parser) took 887744.21ms. Allocated memory is still 449.8MB. Free memory was 395.7MB in the beginning and 280.9MB in the end (delta: 114.8MB). Peak memory consumption was 116.0MB. Max. memory is 8.0GB. [2023-12-24 18:46:04,077 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 242.2MB. Free memory is still 190.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 18:46:04,077 INFO L158 Benchmark]: CACSL2BoogieTranslator took 505.99ms. Allocated memory is still 449.8MB. Free memory was 395.7MB in the beginning and 376.4MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-24 18:46:04,077 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.36ms. Allocated memory is still 449.8MB. Free memory was 376.4MB in the beginning and 372.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 18:46:04,079 INFO L158 Benchmark]: Boogie Preprocessor took 99.32ms. Allocated memory is still 449.8MB. Free memory was 372.3MB in the beginning and 367.0MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-24 18:46:04,079 INFO L158 Benchmark]: RCFGBuilder took 2514.69ms. Allocated memory is still 449.8MB. Free memory was 367.0MB in the beginning and 386.1MB in the end (delta: -19.1MB). Peak memory consumption was 21.8MB. Max. memory is 8.0GB. [2023-12-24 18:46:04,079 INFO L158 Benchmark]: TraceAbstraction took 884540.89ms. Allocated memory is still 449.8MB. Free memory was 385.0MB in the beginning and 280.9MB in the end (delta: 104.1MB). Peak memory consumption was 104.7MB. Max. memory is 8.0GB. [2023-12-24 18:46:04,080 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 242.2MB. Free memory is still 190.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 505.99ms. Allocated memory is still 449.8MB. Free memory was 395.7MB in the beginning and 376.4MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 77.36ms. Allocated memory is still 449.8MB. Free memory was 376.4MB in the beginning and 372.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 99.32ms. Allocated memory is still 449.8MB. Free memory was 372.3MB in the beginning and 367.0MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 2514.69ms. Allocated memory is still 449.8MB. Free memory was 367.0MB in the beginning and 386.1MB in the end (delta: -19.1MB). Peak memory consumption was 21.8MB. Max. memory is 8.0GB. * TraceAbstraction took 884540.89ms. Allocated memory is still 449.8MB. Free memory was 385.0MB in the beginning and 280.9MB in the end (delta: 104.1MB). Peak memory consumption was 104.7MB. 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 constructing difference of abstraction (239states) and FLOYD_HOARE automaton (currently 4 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (48 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 107 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 884.5s, OverallIterations: 17, TraceHistogramMax: 17, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 137.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 1500 SdHoareTripleChecker+Valid, 124.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1500 mSDsluCounter, 8072 SdHoareTripleChecker+Invalid, 119.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5767 mSDsCounter, 62 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2332 IncrementalHoareTripleChecker+Invalid, 2397 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 62 mSolverCounterUnsat, 2305 mSDtfsCounter, 2332 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2531 GetRequests, 2418 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 27.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred in iteration=16, InterpolantAutomatonStates: 126, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 294 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 717.2s SatisfiabilityAnalysisTime, 23.7s InterpolantComputationTime, 2493 NumberOfCodeBlocks, 2493 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 2476 ConstructedInterpolants, 2 QuantifiedInterpolants, 4797 SizeOfPredicates, 77 NumberOfNonLiveVariables, 5378 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 9248/9248 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