/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-12.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 15:44:56,019 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 15:44:56,066 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 15:44:56,070 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 15:44:56,071 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 15:44:56,089 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 15:44:56,089 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 15:44:56,089 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 15:44:56,090 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 15:44:56,090 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 15:44:56,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 15:44:56,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 15:44:56,091 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 15:44:56,092 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 15:44:56,092 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 15:44:56,093 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 15:44:56,093 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 15:44:56,093 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 15:44:56,094 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 15:44:56,094 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 15:44:56,094 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 15:44:56,095 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 15:44:56,095 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 15:44:56,095 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 15:44:56,096 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 15:44:56,096 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 15:44:56,096 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 15:44:56,097 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 15:44:56,097 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 15:44:56,097 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 15:44:56,098 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 15:44:56,098 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 15:44:56,098 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 15:44:56,099 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 15:44:56,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 15:44:56,099 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 15:44:56,099 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 15:44:56,100 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 15:44:56,100 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 15:44:56,100 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 15:44:56,100 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 15:44:56,101 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 15:44:56,101 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 15:44:56,101 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 15:44:56,101 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 15:44:56,101 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 15:44:56,102 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 15:44:56,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 15:44:56,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 15:44:56,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 15:44:56,324 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 15:44:56,324 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 15:44:56,325 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-12.i [2023-12-16 15:44:57,383 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 15:44:57,588 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 15:44:57,588 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-12.i [2023-12-16 15:44:57,595 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1912a2bd/e60ed177aab04a63bc72d83c0c1153ff/FLAG01c64426a [2023-12-16 15:44:57,606 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1912a2bd/e60ed177aab04a63bc72d83c0c1153ff [2023-12-16 15:44:57,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 15:44:57,612 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 15:44:57,613 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 15:44:57,613 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 15:44:57,617 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 15:44:57,617 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:44:57" (1/1) ... [2023-12-16 15:44:57,618 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4817df08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:44:57, skipping insertion in model container [2023-12-16 15:44:57,618 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:44:57" (1/1) ... [2023-12-16 15:44:57,647 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 15:44:57,776 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-12.i[916,929] [2023-12-16 15:44:57,820 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 15:44:57,833 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 15:44:57,843 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-12.i[916,929] [2023-12-16 15:44:57,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 15:44:57,884 INFO L206 MainTranslator]: Completed translation [2023-12-16 15:44:57,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:44:57 WrapperNode [2023-12-16 15:44:57,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 15:44:57,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 15:44:57,886 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 15:44:57,886 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 15:44:57,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:44:57" (1/1) ... [2023-12-16 15:44:57,906 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:44:57" (1/1) ... [2023-12-16 15:44:57,941 INFO L138 Inliner]: procedures = 30, calls = 161, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 472 [2023-12-16 15:44:57,942 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 15:44:57,943 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 15:44:57,943 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 15:44:57,943 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 15:44:57,952 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:44:57" (1/1) ... [2023-12-16 15:44:57,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:44:57" (1/1) ... [2023-12-16 15:44:57,958 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:44:57" (1/1) ... [2023-12-16 15:44:57,978 INFO L175 MemorySlicer]: Split 123 memory accesses to 12 slices as follows [2, 5, 6, 6, 8, 10, 23, 10, 18, 20, 7, 8]. 19 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 14 writes are split as follows [0, 2, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1]. [2023-12-16 15:44:57,979 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:44:57" (1/1) ... [2023-12-16 15:44:57,979 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:44:57" (1/1) ... [2023-12-16 15:44:57,999 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:44:57" (1/1) ... [2023-12-16 15:44:58,019 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:44:57" (1/1) ... [2023-12-16 15:44:58,023 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:44:57" (1/1) ... [2023-12-16 15:44:58,026 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:44:57" (1/1) ... [2023-12-16 15:44:58,032 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 15:44:58,034 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 15:44:58,035 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 15:44:58,035 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 15:44:58,035 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:44:57" (1/1) ... [2023-12-16 15:44:58,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 15:44:58,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 15:44:58,061 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) [2023-12-16 15:44:58,070 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 [2023-12-16 15:44:58,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 15:44:58,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-16 15:44:58,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-16 15:44:58,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-16 15:44:58,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-16 15:44:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-16 15:44:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-16 15:44:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-16 15:44:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#7 [2023-12-16 15:44:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#8 [2023-12-16 15:44:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#9 [2023-12-16 15:44:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#10 [2023-12-16 15:44:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#11 [2023-12-16 15:44:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 15:44:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 15:44:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-16 15:44:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-16 15:44:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-16 15:44:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-16 15:44:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-16 15:44:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2023-12-16 15:44:58,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2023-12-16 15:44:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9 [2023-12-16 15:44:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#10 [2023-12-16 15:44:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#11 [2023-12-16 15:44:58,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-16 15:44:58,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-16 15:44:58,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-16 15:44:58,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-16 15:44:58,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-16 15:44:58,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-16 15:44:58,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2023-12-16 15:44:58,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#7 [2023-12-16 15:44:58,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#8 [2023-12-16 15:44:58,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#9 [2023-12-16 15:44:58,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#10 [2023-12-16 15:44:58,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#11 [2023-12-16 15:44:58,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 15:44:58,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 15:44:58,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-16 15:44:58,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-16 15:44:58,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-16 15:44:58,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-16 15:44:58,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-12-16 15:44:58,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2023-12-16 15:44:58,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#8 [2023-12-16 15:44:58,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#9 [2023-12-16 15:44:58,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#10 [2023-12-16 15:44:58,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#11 [2023-12-16 15:44:58,101 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 15:44:58,101 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 15:44:58,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 15:44:58,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 15:44:58,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-16 15:44:58,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-16 15:44:58,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-16 15:44:58,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-16 15:44:58,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-16 15:44:58,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-16 15:44:58,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-16 15:44:58,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#7 [2023-12-16 15:44:58,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#8 [2023-12-16 15:44:58,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#9 [2023-12-16 15:44:58,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#10 [2023-12-16 15:44:58,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#11 [2023-12-16 15:44:58,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 15:44:58,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 15:44:58,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-16 15:44:58,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-16 15:44:58,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-16 15:44:58,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-16 15:44:58,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-12-16 15:44:58,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#7 [2023-12-16 15:44:58,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#8 [2023-12-16 15:44:58,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#9 [2023-12-16 15:44:58,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#10 [2023-12-16 15:44:58,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#11 [2023-12-16 15:44:58,266 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 15:44:58,268 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 15:44:58,714 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 15:44:58,750 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 15:44:58,750 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 15:44:58,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:44:58 BoogieIcfgContainer [2023-12-16 15:44:58,750 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 15:44:58,752 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 15:44:58,752 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 15:44:58,755 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 15:44:58,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:44:57" (1/3) ... [2023-12-16 15:44:58,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d0a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:44:58, skipping insertion in model container [2023-12-16 15:44:58,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:44:57" (2/3) ... [2023-12-16 15:44:58,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d0a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:44:58, skipping insertion in model container [2023-12-16 15:44:58,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:44:58" (3/3) ... [2023-12-16 15:44:58,780 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-12.i [2023-12-16 15:44:58,795 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 15:44:58,795 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 15:44:58,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 15:44:58,841 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;@422d7a2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 15:44:58,841 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 15:44:58,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 73 states have internal predecessors, (103), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 15:44:58,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-16 15:44:58,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:44:58,863 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:44:58,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:44:58,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:44:58,870 INFO L85 PathProgramCache]: Analyzing trace with hash 800962782, now seen corresponding path program 1 times [2023-12-16 15:44:58,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:44:58,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21948010] [2023-12-16 15:44:58,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:44:58,885 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 [2023-12-16 15:44:58,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:44:58,892 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) [2023-12-16 15:44:58,902 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 [2023-12-16 15:44:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:44:59,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 15:44:59,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:44:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-12-16 15:44:59,230 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:44:59,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:44:59,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21948010] [2023-12-16 15:44:59,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21948010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:44:59,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:44:59,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 15:44:59,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397849581] [2023-12-16 15:44:59,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:44:59,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 15:44:59,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:44:59,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 15:44:59,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 15:44:59,279 INFO L87 Difference]: Start difference. First operand has 91 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 73 states have internal predecessors, (103), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 15:44:59,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:44:59,344 INFO L93 Difference]: Finished difference Result 173 states and 274 transitions. [2023-12-16 15:44:59,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 15:44:59,347 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 112 [2023-12-16 15:44:59,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:44:59,365 INFO L225 Difference]: With dead ends: 173 [2023-12-16 15:44:59,365 INFO L226 Difference]: Without dead ends: 83 [2023-12-16 15:44:59,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 15:44:59,373 INFO L413 NwaCegarLoop]: 114 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, 114 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 [2023-12-16 15:44:59,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:44:59,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-16 15:44:59,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-12-16 15:44:59,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.323076923076923) internal successors, (86), 65 states have internal predecessors, (86), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 15:44:59,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 118 transitions. [2023-12-16 15:44:59,438 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 118 transitions. Word has length 112 [2023-12-16 15:44:59,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:44:59,439 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 118 transitions. [2023-12-16 15:44:59,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 15:44:59,440 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 118 transitions. [2023-12-16 15:44:59,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-16 15:44:59,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:44:59,449 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:44:59,456 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 [2023-12-16 15:44:59,656 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 [2023-12-16 15:44:59,657 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:44:59,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:44:59,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1146482878, now seen corresponding path program 1 times [2023-12-16 15:44:59,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:44:59,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409926470] [2023-12-16 15:44:59,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:44:59,659 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 [2023-12-16 15:44:59,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:44:59,660 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) [2023-12-16 15:44:59,661 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 [2023-12-16 15:44:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:44:59,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 15:44:59,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:44:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 15:44:59,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:44:59,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:44:59,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409926470] [2023-12-16 15:44:59,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409926470] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:44:59,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:44:59,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 15:44:59,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570108705] [2023-12-16 15:44:59,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:44:59,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 15:44:59,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:44:59,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 15:44:59,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 15:44:59,954 INFO L87 Difference]: Start difference. First operand 83 states and 118 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:00,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:00,031 INFO L93 Difference]: Finished difference Result 165 states and 235 transitions. [2023-12-16 15:45:00,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 15:45:00,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 112 [2023-12-16 15:45:00,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:00,035 INFO L225 Difference]: With dead ends: 165 [2023-12-16 15:45:00,035 INFO L226 Difference]: Without dead ends: 83 [2023-12-16 15:45:00,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:45:00,039 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 45 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:00,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 286 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:45:00,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-16 15:45:00,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-12-16 15:45:00,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 65 states have internal predecessors, (85), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 15:45:00,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2023-12-16 15:45:00,055 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 112 [2023-12-16 15:45:00,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:00,057 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2023-12-16 15:45:00,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:00,057 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2023-12-16 15:45:00,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-16 15:45:00,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:00,059 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:00,074 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 [2023-12-16 15:45:00,268 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 [2023-12-16 15:45:00,269 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:00,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:00,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1770995456, now seen corresponding path program 1 times [2023-12-16 15:45:00,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:00,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107401994] [2023-12-16 15:45:00,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:00,270 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 [2023-12-16 15:45:00,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:00,271 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) [2023-12-16 15:45:00,272 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 [2023-12-16 15:45:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:00,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 15:45:00,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:00,506 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 15:45:00,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:45:00,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:00,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107401994] [2023-12-16 15:45:00,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107401994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:45:00,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:45:00,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:45:00,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197855841] [2023-12-16 15:45:00,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:00,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:45:00,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:00,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:45:00,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:45:00,514 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:00,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:00,593 INFO L93 Difference]: Finished difference Result 177 states and 250 transitions. [2023-12-16 15:45:00,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:45:00,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 114 [2023-12-16 15:45:00,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:00,598 INFO L225 Difference]: With dead ends: 177 [2023-12-16 15:45:00,598 INFO L226 Difference]: Without dead ends: 95 [2023-12-16 15:45:00,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 15:45:00,601 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 65 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:00,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 410 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:45:00,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-16 15:45:00,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 86. [2023-12-16 15:45:00,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.2941176470588236) internal successors, (88), 68 states have internal predecessors, (88), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 15:45:00,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 120 transitions. [2023-12-16 15:45:00,620 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 120 transitions. Word has length 114 [2023-12-16 15:45:00,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:00,621 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 120 transitions. [2023-12-16 15:45:00,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:00,621 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 120 transitions. [2023-12-16 15:45:00,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-16 15:45:00,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:00,625 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:00,631 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 [2023-12-16 15:45:00,831 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 [2023-12-16 15:45:00,831 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:00,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:00,832 INFO L85 PathProgramCache]: Analyzing trace with hash 206005468, now seen corresponding path program 1 times [2023-12-16 15:45:00,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:00,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368116556] [2023-12-16 15:45:00,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:00,833 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 [2023-12-16 15:45:00,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:00,834 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) [2023-12-16 15:45:00,842 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 [2023-12-16 15:45:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:01,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-16 15:45:01,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:01,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-16 15:45:01,843 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 72 treesize of output 52 [2023-12-16 15:45:01,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-16 15:45:01,912 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 42 proven. 60 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-16 15:45:01,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:02,114 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 15:45:02,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:02,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368116556] [2023-12-16 15:45:02,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [368116556] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:45:02,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:45:02,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2023-12-16 15:45:02,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220160479] [2023-12-16 15:45:02,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:02,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 15:45:02,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:02,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 15:45:02,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-12-16 15:45:02,117 INFO L87 Difference]: Start difference. First operand 86 states and 120 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:02,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:02,279 INFO L93 Difference]: Finished difference Result 157 states and 214 transitions. [2023-12-16 15:45:02,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 15:45:02,279 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 116 [2023-12-16 15:45:02,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:02,281 INFO L225 Difference]: With dead ends: 157 [2023-12-16 15:45:02,281 INFO L226 Difference]: Without dead ends: 155 [2023-12-16 15:45:02,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2023-12-16 15:45:02,282 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 102 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:02,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 699 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:45:02,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-12-16 15:45:02,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 152. [2023-12-16 15:45:02,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 119 states have (on average 1.2605042016806722) internal successors, (150), 120 states have internal predecessors, (150), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-16 15:45:02,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 210 transitions. [2023-12-16 15:45:02,293 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 210 transitions. Word has length 116 [2023-12-16 15:45:02,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:02,293 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 210 transitions. [2023-12-16 15:45:02,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:02,294 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 210 transitions. [2023-12-16 15:45:02,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-16 15:45:02,295 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:02,295 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:02,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-16 15:45:02,500 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 [2023-12-16 15:45:02,501 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:02,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:02,501 INFO L85 PathProgramCache]: Analyzing trace with hash -862420349, now seen corresponding path program 1 times [2023-12-16 15:45:02,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:02,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766866975] [2023-12-16 15:45:02,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:02,502 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 [2023-12-16 15:45:02,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:02,503 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) [2023-12-16 15:45:02,505 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 [2023-12-16 15:45:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:02,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-16 15:45:02,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:04,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2023-12-16 15:45:04,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-16 15:45:04,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 43 [2023-12-16 15:45:04,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-16 15:45:04,614 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 46 proven. 302 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-16 15:45:04,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:05,309 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:45:05,309 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 38 treesize of output 37 [2023-12-16 15:45:06,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:45:06,159 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 46 treesize of output 41 [2023-12-16 15:45:06,313 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 114 proven. 48 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-12-16 15:45:06,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:06,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766866975] [2023-12-16 15:45:06,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766866975] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 15:45:06,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:45:06,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 43 [2023-12-16 15:45:06,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179698095] [2023-12-16 15:45:06,314 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:45:06,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-16 15:45:06,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:06,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-16 15:45:06,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1576, Unknown=0, NotChecked=0, Total=1806 [2023-12-16 15:45:06,316 INFO L87 Difference]: Start difference. First operand 152 states and 210 transitions. Second operand has 43 states, 35 states have (on average 2.657142857142857) internal successors, (93), 37 states have internal predecessors, (93), 10 states have call successors, (32), 5 states have call predecessors, (32), 11 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) [2023-12-16 15:45:10,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:10,331 INFO L93 Difference]: Finished difference Result 265 states and 338 transitions. [2023-12-16 15:45:10,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-16 15:45:10,332 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 35 states have (on average 2.657142857142857) internal successors, (93), 37 states have internal predecessors, (93), 10 states have call successors, (32), 5 states have call predecessors, (32), 11 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) Word has length 117 [2023-12-16 15:45:10,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:10,335 INFO L225 Difference]: With dead ends: 265 [2023-12-16 15:45:10,335 INFO L226 Difference]: Without dead ends: 263 [2023-12-16 15:45:10,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1248, Invalid=5724, Unknown=0, NotChecked=0, Total=6972 [2023-12-16 15:45:10,338 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 735 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:10,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1538 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 15:45:10,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-12-16 15:45:10,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 176. [2023-12-16 15:45:10,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 137 states have (on average 1.2262773722627738) internal successors, (168), 138 states have internal predecessors, (168), 30 states have call successors, (30), 8 states have call predecessors, (30), 8 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-16 15:45:10,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 228 transitions. [2023-12-16 15:45:10,365 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 228 transitions. Word has length 117 [2023-12-16 15:45:10,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:10,367 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 228 transitions. [2023-12-16 15:45:10,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 35 states have (on average 2.657142857142857) internal successors, (93), 37 states have internal predecessors, (93), 10 states have call successors, (32), 5 states have call predecessors, (32), 11 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) [2023-12-16 15:45:10,367 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 228 transitions. [2023-12-16 15:45:10,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-16 15:45:10,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:10,368 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:10,379 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 [2023-12-16 15:45:10,576 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 [2023-12-16 15:45:10,576 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:10,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:10,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1236684999, now seen corresponding path program 1 times [2023-12-16 15:45:10,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:10,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375777308] [2023-12-16 15:45:10,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:10,578 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 [2023-12-16 15:45:10,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:10,579 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) [2023-12-16 15:45:10,580 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 [2023-12-16 15:45:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:10,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-16 15:45:10,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:12,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2023-12-16 15:45:12,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-16 15:45:12,379 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 59 treesize of output 43 [2023-12-16 15:45:12,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-16 15:45:12,511 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 46 proven. 302 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-16 15:45:12,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:13,177 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:45:13,177 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 38 treesize of output 37 [2023-12-16 15:45:13,914 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:45:13,915 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 46 treesize of output 41 [2023-12-16 15:45:14,086 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 114 proven. 48 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-12-16 15:45:14,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:14,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375777308] [2023-12-16 15:45:14,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375777308] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 15:45:14,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:45:14,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 45 [2023-12-16 15:45:14,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929903707] [2023-12-16 15:45:14,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:45:14,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-16 15:45:14,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:14,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-16 15:45:14,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1745, Unknown=0, NotChecked=0, Total=1980 [2023-12-16 15:45:14,090 INFO L87 Difference]: Start difference. First operand 176 states and 228 transitions. Second operand has 45 states, 37 states have (on average 2.5675675675675675) internal successors, (95), 39 states have internal predecessors, (95), 10 states have call successors, (32), 5 states have call predecessors, (32), 11 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) [2023-12-16 15:45:17,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:17,034 INFO L93 Difference]: Finished difference Result 197 states and 247 transitions. [2023-12-16 15:45:17,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-16 15:45:17,041 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 37 states have (on average 2.5675675675675675) internal successors, (95), 39 states have internal predecessors, (95), 10 states have call successors, (32), 5 states have call predecessors, (32), 11 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) Word has length 118 [2023-12-16 15:45:17,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:17,042 INFO L225 Difference]: With dead ends: 197 [2023-12-16 15:45:17,042 INFO L226 Difference]: Without dead ends: 195 [2023-12-16 15:45:17,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1134, Invalid=4872, Unknown=0, NotChecked=0, Total=6006 [2023-12-16 15:45:17,044 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 939 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:17,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 1424 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 15:45:17,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-12-16 15:45:17,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 181. [2023-12-16 15:45:17,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 141 states have (on average 1.2198581560283688) internal successors, (172), 142 states have internal predecessors, (172), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-16 15:45:17,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 232 transitions. [2023-12-16 15:45:17,066 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 232 transitions. Word has length 118 [2023-12-16 15:45:17,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:17,066 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 232 transitions. [2023-12-16 15:45:17,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 37 states have (on average 2.5675675675675675) internal successors, (95), 39 states have internal predecessors, (95), 10 states have call successors, (32), 5 states have call predecessors, (32), 11 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) [2023-12-16 15:45:17,066 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 232 transitions. [2023-12-16 15:45:17,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-16 15:45:17,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:17,067 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:17,079 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 [2023-12-16 15:45:17,273 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 [2023-12-16 15:45:17,273 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:17,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:17,274 INFO L85 PathProgramCache]: Analyzing trace with hash 756075619, now seen corresponding path program 1 times [2023-12-16 15:45:17,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:17,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005927331] [2023-12-16 15:45:17,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:17,274 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 [2023-12-16 15:45:17,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:17,275 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) [2023-12-16 15:45:17,277 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 [2023-12-16 15:45:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:17,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 15:45:17,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:17,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-16 15:45:17,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-16 15:45:17,482 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 15:45:17,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:45:17,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:17,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005927331] [2023-12-16 15:45:17,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005927331] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:45:17,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:45:17,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:45:17,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675845296] [2023-12-16 15:45:17,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:17,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:45:17,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:17,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:45:17,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:45:17,484 INFO L87 Difference]: Start difference. First operand 181 states and 232 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:17,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:17,544 INFO L93 Difference]: Finished difference Result 439 states and 564 transitions. [2023-12-16 15:45:17,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:45:17,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 119 [2023-12-16 15:45:17,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:17,546 INFO L225 Difference]: With dead ends: 439 [2023-12-16 15:45:17,546 INFO L226 Difference]: Without dead ends: 259 [2023-12-16 15:45:17,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 15:45:17,547 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 62 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:17,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 428 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:45:17,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-12-16 15:45:17,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 202. [2023-12-16 15:45:17,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 162 states have (on average 1.2160493827160495) internal successors, (197), 163 states have internal predecessors, (197), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-16 15:45:17,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 257 transitions. [2023-12-16 15:45:17,565 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 257 transitions. Word has length 119 [2023-12-16 15:45:17,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:17,565 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 257 transitions. [2023-12-16 15:45:17,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:17,565 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 257 transitions. [2023-12-16 15:45:17,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-16 15:45:17,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:17,567 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:17,574 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 [2023-12-16 15:45:17,772 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 [2023-12-16 15:45:17,772 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:17,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:17,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1255421784, now seen corresponding path program 1 times [2023-12-16 15:45:17,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:17,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126564462] [2023-12-16 15:45:17,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:17,773 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 [2023-12-16 15:45:17,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:17,774 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) [2023-12-16 15:45:17,775 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 [2023-12-16 15:45:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:17,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 15:45:17,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:18,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-12-16 15:45:18,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-16 15:45:18,658 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 2 proven. 162 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-12-16 15:45:18,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:19,033 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:45:19,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 42 [2023-12-16 15:45:19,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:19,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126564462] [2023-12-16 15:45:19,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126564462] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:45:19,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1183711641] [2023-12-16 15:45:19,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:19,192 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 15:45:19,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 15:45:19,221 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 15:45:19,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-16 15:45:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:19,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 15:45:19,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:20,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-12-16 15:45:20,122 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 15:45:20,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:45:20,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1183711641] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:45:20,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:45:20,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2023-12-16 15:45:20,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351876203] [2023-12-16 15:45:20,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:20,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 15:45:20,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:20,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 15:45:20,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-16 15:45:20,125 INFO L87 Difference]: Start difference. First operand 202 states and 257 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:20,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:20,226 INFO L93 Difference]: Finished difference Result 538 states and 680 transitions. [2023-12-16 15:45:20,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 15:45:20,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 119 [2023-12-16 15:45:20,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:20,228 INFO L225 Difference]: With dead ends: 538 [2023-12-16 15:45:20,229 INFO L226 Difference]: Without dead ends: 337 [2023-12-16 15:45:20,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2023-12-16 15:45:20,230 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 46 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:20,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 318 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:45:20,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-12-16 15:45:20,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 328. [2023-12-16 15:45:20,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 249 states have (on average 1.1686746987951808) internal successors, (291), 251 states have internal predecessors, (291), 60 states have call successors, (60), 18 states have call predecessors, (60), 18 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-16 15:45:20,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 411 transitions. [2023-12-16 15:45:20,262 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 411 transitions. Word has length 119 [2023-12-16 15:45:20,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:20,263 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 411 transitions. [2023-12-16 15:45:20,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:20,263 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 411 transitions. [2023-12-16 15:45:20,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-16 15:45:20,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:20,264 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:20,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-16 15:45:20,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-12-16 15:45:20,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 15:45:20,669 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:20,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:20,670 INFO L85 PathProgramCache]: Analyzing trace with hash 214911180, now seen corresponding path program 1 times [2023-12-16 15:45:20,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:20,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743685887] [2023-12-16 15:45:20,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:20,670 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 [2023-12-16 15:45:20,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:20,671 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) [2023-12-16 15:45:20,690 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 [2023-12-16 15:45:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:20,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 15:45:20,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:21,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-12-16 15:45:21,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-16 15:45:21,581 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 2 proven. 162 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-12-16 15:45:21,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:21,958 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:45:21,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 42 [2023-12-16 15:45:22,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:22,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743685887] [2023-12-16 15:45:22,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743685887] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:45:22,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [907455140] [2023-12-16 15:45:22,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:22,080 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 15:45:22,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 15:45:22,081 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 15:45:22,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-16 15:45:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:22,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 15:45:22,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:22,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-12-16 15:45:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 15:45:22,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:45:22,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [907455140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:45:22,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:45:22,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2023-12-16 15:45:22,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726571341] [2023-12-16 15:45:22,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:22,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 15:45:22,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:22,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 15:45:22,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2023-12-16 15:45:22,963 INFO L87 Difference]: Start difference. First operand 328 states and 411 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:23,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:23,079 INFO L93 Difference]: Finished difference Result 616 states and 772 transitions. [2023-12-16 15:45:23,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 15:45:23,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 120 [2023-12-16 15:45:23,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:23,083 INFO L225 Difference]: With dead ends: 616 [2023-12-16 15:45:23,083 INFO L226 Difference]: Without dead ends: 329 [2023-12-16 15:45:23,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2023-12-16 15:45:23,085 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 24 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:23,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 318 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:45:23,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-12-16 15:45:23,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 320. [2023-12-16 15:45:23,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 241 states have (on average 1.157676348547718) internal successors, (279), 243 states have internal predecessors, (279), 60 states have call successors, (60), 18 states have call predecessors, (60), 18 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-16 15:45:23,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 399 transitions. [2023-12-16 15:45:23,116 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 399 transitions. Word has length 120 [2023-12-16 15:45:23,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:23,116 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 399 transitions. [2023-12-16 15:45:23,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:23,117 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 399 transitions. [2023-12-16 15:45:23,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 15:45:23,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:23,118 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:23,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-16 15:45:23,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-12-16 15:45:23,523 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=3,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 15:45:23,523 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:23,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:23,523 INFO L85 PathProgramCache]: Analyzing trace with hash -444392749, now seen corresponding path program 1 times [2023-12-16 15:45:23,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:23,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191441916] [2023-12-16 15:45:23,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:23,524 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 [2023-12-16 15:45:23,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:23,525 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) [2023-12-16 15:45:23,526 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 [2023-12-16 15:45:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:23,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 15:45:23,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:24,609 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 25 treesize of output 17 [2023-12-16 15:45:24,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-12-16 15:45:24,658 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 3 proven. 253 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-16 15:45:24,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:24,775 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 15:45:24,775 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:24,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191441916] [2023-12-16 15:45:24,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [191441916] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:45:24,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:45:24,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-16 15:45:24,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81405] [2023-12-16 15:45:24,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:24,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:45:24,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:24,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:45:24,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-16 15:45:24,777 INFO L87 Difference]: Start difference. First operand 320 states and 399 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:24,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:24,977 INFO L93 Difference]: Finished difference Result 683 states and 856 transitions. [2023-12-16 15:45:24,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:45:24,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 15:45:24,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:24,980 INFO L225 Difference]: With dead ends: 683 [2023-12-16 15:45:24,980 INFO L226 Difference]: Without dead ends: 482 [2023-12-16 15:45:24,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2023-12-16 15:45:24,981 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 177 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:24,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 307 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:45:24,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-12-16 15:45:25,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 475. [2023-12-16 15:45:25,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 367 states have (on average 1.1798365122615804) internal successors, (433), 371 states have internal predecessors, (433), 80 states have call successors, (80), 27 states have call predecessors, (80), 27 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-16 15:45:25,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 593 transitions. [2023-12-16 15:45:25,023 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 593 transitions. Word has length 124 [2023-12-16 15:45:25,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:25,023 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 593 transitions. [2023-12-16 15:45:25,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:25,023 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 593 transitions. [2023-12-16 15:45:25,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 15:45:25,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:25,024 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:25,039 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 [2023-12-16 15:45:25,227 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 [2023-12-16 15:45:25,227 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:25,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:25,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2045136213, now seen corresponding path program 1 times [2023-12-16 15:45:25,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:25,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038016306] [2023-12-16 15:45:25,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:25,228 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 [2023-12-16 15:45:25,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:25,229 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) [2023-12-16 15:45:25,230 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 [2023-12-16 15:45:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:25,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 15:45:25,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:26,277 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 25 treesize of output 17 [2023-12-16 15:45:26,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-12-16 15:45:26,327 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 3 proven. 253 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-16 15:45:26,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:26,475 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 15:45:26,475 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:26,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038016306] [2023-12-16 15:45:26,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038016306] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:45:26,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:45:26,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-16 15:45:26,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078939506] [2023-12-16 15:45:26,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:26,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:45:26,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:26,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:45:26,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-16 15:45:26,477 INFO L87 Difference]: Start difference. First operand 475 states and 593 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:26,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:26,716 INFO L93 Difference]: Finished difference Result 891 states and 1127 transitions. [2023-12-16 15:45:26,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:45:26,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 15:45:26,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:26,723 INFO L225 Difference]: With dead ends: 891 [2023-12-16 15:45:26,723 INFO L226 Difference]: Without dead ends: 539 [2023-12-16 15:45:26,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-16 15:45:26,726 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 198 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:26,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 344 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:45:26,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2023-12-16 15:45:26,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 475. [2023-12-16 15:45:26,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 367 states have (on average 1.1743869209809263) internal successors, (431), 371 states have internal predecessors, (431), 80 states have call successors, (80), 27 states have call predecessors, (80), 27 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-16 15:45:26,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 591 transitions. [2023-12-16 15:45:26,768 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 591 transitions. Word has length 124 [2023-12-16 15:45:26,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:26,769 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 591 transitions. [2023-12-16 15:45:26,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:26,769 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 591 transitions. [2023-12-16 15:45:26,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 15:45:26,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:26,771 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:26,776 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 [2023-12-16 15:45:26,976 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 [2023-12-16 15:45:26,976 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:26,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:26,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1548766505, now seen corresponding path program 1 times [2023-12-16 15:45:26,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:26,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4365938] [2023-12-16 15:45:26,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:26,977 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 [2023-12-16 15:45:26,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:26,978 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) [2023-12-16 15:45:26,979 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 [2023-12-16 15:45:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:27,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 15:45:27,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:27,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-16 15:45:27,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-16 15:45:27,770 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-12-16 15:45:27,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:27,940 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 15:45:27,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:27,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4365938] [2023-12-16 15:45:27,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4365938] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:45:27,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:45:27,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 13 [2023-12-16 15:45:27,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976290489] [2023-12-16 15:45:27,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:27,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 15:45:27,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:27,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 15:45:27,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-16 15:45:27,941 INFO L87 Difference]: Start difference. First operand 475 states and 591 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:28,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:28,324 INFO L93 Difference]: Finished difference Result 1037 states and 1305 transitions. [2023-12-16 15:45:28,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 15:45:28,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 15:45:28,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:28,329 INFO L225 Difference]: With dead ends: 1037 [2023-12-16 15:45:28,329 INFO L226 Difference]: Without dead ends: 685 [2023-12-16 15:45:28,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-12-16 15:45:28,330 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 192 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:28,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 642 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 15:45:28,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-12-16 15:45:28,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 501. [2023-12-16 15:45:28,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 393 states have (on average 1.178117048346056) internal successors, (463), 397 states have internal predecessors, (463), 80 states have call successors, (80), 27 states have call predecessors, (80), 27 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-16 15:45:28,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 623 transitions. [2023-12-16 15:45:28,376 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 623 transitions. Word has length 124 [2023-12-16 15:45:28,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:28,376 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 623 transitions. [2023-12-16 15:45:28,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:28,377 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 623 transitions. [2023-12-16 15:45:28,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 15:45:28,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:28,378 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:28,386 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 [2023-12-16 15:45:28,586 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 [2023-12-16 15:45:28,586 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:28,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:28,587 INFO L85 PathProgramCache]: Analyzing trace with hash 801652192, now seen corresponding path program 1 times [2023-12-16 15:45:28,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:28,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829589047] [2023-12-16 15:45:28,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:28,587 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 [2023-12-16 15:45:28,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:28,588 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) [2023-12-16 15:45:28,589 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 [2023-12-16 15:45:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:28,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 15:45:28,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:29,662 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 25 treesize of output 17 [2023-12-16 15:45:29,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-12-16 15:45:29,714 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 3 proven. 253 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-16 15:45:29,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 15:45:29,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:29,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829589047] [2023-12-16 15:45:29,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829589047] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:45:29,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:45:29,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-16 15:45:29,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367295089] [2023-12-16 15:45:29,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:29,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:45:29,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:29,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:45:29,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-16 15:45:29,887 INFO L87 Difference]: Start difference. First operand 501 states and 623 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:30,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:30,149 INFO L93 Difference]: Finished difference Result 943 states and 1183 transitions. [2023-12-16 15:45:30,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:45:30,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 15:45:30,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:30,153 INFO L225 Difference]: With dead ends: 943 [2023-12-16 15:45:30,154 INFO L226 Difference]: Without dead ends: 565 [2023-12-16 15:45:30,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-16 15:45:30,155 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 182 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:30,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 339 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:45:30,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2023-12-16 15:45:30,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 501. [2023-12-16 15:45:30,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 393 states have (on average 1.173027989821883) internal successors, (461), 397 states have internal predecessors, (461), 80 states have call successors, (80), 27 states have call predecessors, (80), 27 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-16 15:45:30,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 621 transitions. [2023-12-16 15:45:30,201 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 621 transitions. Word has length 124 [2023-12-16 15:45:30,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:30,201 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 621 transitions. [2023-12-16 15:45:30,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:30,201 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 621 transitions. [2023-12-16 15:45:30,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 15:45:30,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:30,202 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:30,213 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 [2023-12-16 15:45:30,408 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 [2023-12-16 15:45:30,408 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:30,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:30,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1481710562, now seen corresponding path program 1 times [2023-12-16 15:45:30,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:30,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231640634] [2023-12-16 15:45:30,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:30,410 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 [2023-12-16 15:45:30,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:30,411 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) [2023-12-16 15:45:30,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-16 15:45:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:30,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 15:45:30,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:31,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-16 15:45:31,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-16 15:45:31,524 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 6 proven. 334 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-16 15:45:31,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:31,772 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:45:31,772 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 30 treesize of output 33 [2023-12-16 15:45:31,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:31,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231640634] [2023-12-16 15:45:31,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231640634] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:45:31,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1633559570] [2023-12-16 15:45:31,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:31,910 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 15:45:31,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 15:45:31,911 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 15:45:31,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-16 15:45:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:32,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-16 15:45:32,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:34,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-16 15:45:34,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-16 15:45:34,406 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 6 proven. 334 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-16 15:45:34,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:34,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:45:34,614 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 30 treesize of output 33 [2023-12-16 15:45:34,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1633559570] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:45:34,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:45:34,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-12-16 15:45:34,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889313333] [2023-12-16 15:45:34,768 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:45:34,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-16 15:45:34,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:34,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-16 15:45:34,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1187, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 15:45:34,770 INFO L87 Difference]: Start difference. First operand 501 states and 621 transitions. Second operand has 28 states, 24 states have (on average 4.541666666666667) internal successors, (109), 23 states have internal predecessors, (109), 10 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 6 states have call predecessors, (32), 10 states have call successors, (32) [2023-12-16 15:45:36,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:36,490 INFO L93 Difference]: Finished difference Result 976 states and 1209 transitions. [2023-12-16 15:45:36,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 15:45:36,492 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 4.541666666666667) internal successors, (109), 23 states have internal predecessors, (109), 10 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 6 states have call predecessors, (32), 10 states have call successors, (32) Word has length 124 [2023-12-16 15:45:36,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:36,495 INFO L225 Difference]: With dead ends: 976 [2023-12-16 15:45:36,495 INFO L226 Difference]: Without dead ends: 598 [2023-12-16 15:45:36,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 302 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=491, Invalid=2479, Unknown=0, NotChecked=0, Total=2970 [2023-12-16 15:45:36,497 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 647 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:36,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 1098 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 15:45:36,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2023-12-16 15:45:36,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 397. [2023-12-16 15:45:36,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 315 states have (on average 1.1682539682539683) internal successors, (368), 317 states have internal predecessors, (368), 56 states have call successors, (56), 25 states have call predecessors, (56), 25 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-16 15:45:36,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 480 transitions. [2023-12-16 15:45:36,552 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 480 transitions. Word has length 124 [2023-12-16 15:45:36,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:36,552 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 480 transitions. [2023-12-16 15:45:36,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 4.541666666666667) internal successors, (109), 23 states have internal predecessors, (109), 10 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 6 states have call predecessors, (32), 10 states have call successors, (32) [2023-12-16 15:45:36,553 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 480 transitions. [2023-12-16 15:45:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 15:45:36,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:36,554 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:36,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-16 15:45:36,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2023-12-16 15:45:36,964 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=3,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 15:45:36,965 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:36,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:36,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1103919372, now seen corresponding path program 1 times [2023-12-16 15:45:36,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:36,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344946567] [2023-12-16 15:45:36,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:36,965 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 [2023-12-16 15:45:36,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:36,967 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:45:36,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-16 15:45:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:37,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 15:45:37,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:38,083 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 25 treesize of output 17 [2023-12-16 15:45:38,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-12-16 15:45:38,149 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 3 proven. 253 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-16 15:45:38,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:38,260 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 15:45:38,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:38,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [344946567] [2023-12-16 15:45:38,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [344946567] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:45:38,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:45:38,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-16 15:45:38,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084213923] [2023-12-16 15:45:38,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:38,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:45:38,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:38,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:45:38,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-16 15:45:38,261 INFO L87 Difference]: Start difference. First operand 397 states and 480 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:38,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:38,456 INFO L93 Difference]: Finished difference Result 664 states and 809 transitions. [2023-12-16 15:45:38,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:45:38,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 15:45:38,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:38,458 INFO L225 Difference]: With dead ends: 664 [2023-12-16 15:45:38,458 INFO L226 Difference]: Without dead ends: 402 [2023-12-16 15:45:38,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2023-12-16 15:45:38,460 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 95 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:38,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 401 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:45:38,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-12-16 15:45:38,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 397. [2023-12-16 15:45:38,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 315 states have (on average 1.1650793650793652) internal successors, (367), 317 states have internal predecessors, (367), 56 states have call successors, (56), 25 states have call predecessors, (56), 25 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-16 15:45:38,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 479 transitions. [2023-12-16 15:45:38,508 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 479 transitions. Word has length 124 [2023-12-16 15:45:38,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:38,509 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 479 transitions. [2023-12-16 15:45:38,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:38,509 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 479 transitions. [2023-12-16 15:45:38,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 15:45:38,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:38,510 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:38,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-16 15:45:38,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:45:38,716 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:38,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:38,716 INFO L85 PathProgramCache]: Analyzing trace with hash -701518962, now seen corresponding path program 1 times [2023-12-16 15:45:38,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:38,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35992534] [2023-12-16 15:45:38,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:38,717 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 [2023-12-16 15:45:38,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:38,717 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:45:38,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-16 15:45:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:38,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 15:45:38,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:39,852 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 25 treesize of output 17 [2023-12-16 15:45:39,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-12-16 15:45:39,903 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 3 proven. 253 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-16 15:45:39,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:40,039 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 15:45:40,039 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:40,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35992534] [2023-12-16 15:45:40,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35992534] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:45:40,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:45:40,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-16 15:45:40,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961048503] [2023-12-16 15:45:40,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:40,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:45:40,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:40,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:45:40,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-16 15:45:40,041 INFO L87 Difference]: Start difference. First operand 397 states and 479 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:40,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:40,241 INFO L93 Difference]: Finished difference Result 700 states and 857 transitions. [2023-12-16 15:45:40,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:45:40,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 15:45:40,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:40,244 INFO L225 Difference]: With dead ends: 700 [2023-12-16 15:45:40,244 INFO L226 Difference]: Without dead ends: 438 [2023-12-16 15:45:40,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-16 15:45:40,246 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 114 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:40,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 446 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:45:40,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-12-16 15:45:40,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 397. [2023-12-16 15:45:40,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 315 states have (on average 1.1587301587301588) internal successors, (365), 317 states have internal predecessors, (365), 56 states have call successors, (56), 25 states have call predecessors, (56), 25 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-16 15:45:40,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 477 transitions. [2023-12-16 15:45:40,315 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 477 transitions. Word has length 124 [2023-12-16 15:45:40,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:40,315 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 477 transitions. [2023-12-16 15:45:40,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:40,315 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 477 transitions. [2023-12-16 15:45:40,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 15:45:40,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:40,317 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:40,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-16 15:45:40,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:45:40,523 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:40,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:40,523 INFO L85 PathProgramCache]: Analyzing trace with hash -21460592, now seen corresponding path program 1 times [2023-12-16 15:45:40,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:40,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401803226] [2023-12-16 15:45:40,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:40,523 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 [2023-12-16 15:45:40,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:40,524 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:45:40,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-16 15:45:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:40,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-16 15:45:40,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:41,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-12-16 15:45:41,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-12-16 15:45:41,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2023-12-16 15:45:41,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2023-12-16 15:45:42,077 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 6 proven. 334 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-16 15:45:42,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:42,526 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 15:45:42,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:42,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401803226] [2023-12-16 15:45:42,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401803226] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:45:42,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:45:42,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [25] total 35 [2023-12-16 15:45:42,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822083991] [2023-12-16 15:45:42,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:42,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 15:45:42,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:42,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 15:45:42,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1087, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 15:45:42,528 INFO L87 Difference]: Start difference. First operand 397 states and 477 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:43,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:43,745 INFO L93 Difference]: Finished difference Result 847 states and 1048 transitions. [2023-12-16 15:45:43,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-16 15:45:43,746 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 15:45:43,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:43,749 INFO L225 Difference]: With dead ends: 847 [2023-12-16 15:45:43,749 INFO L226 Difference]: Without dead ends: 585 [2023-12-16 15:45:43,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=255, Invalid=2397, Unknown=0, NotChecked=0, Total=2652 [2023-12-16 15:45:43,751 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 333 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:43,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 1577 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 15:45:43,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2023-12-16 15:45:43,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 426. [2023-12-16 15:45:43,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 344 states have (on average 1.1744186046511629) internal successors, (404), 346 states have internal predecessors, (404), 56 states have call successors, (56), 25 states have call predecessors, (56), 25 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-16 15:45:43,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 516 transitions. [2023-12-16 15:45:43,809 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 516 transitions. Word has length 124 [2023-12-16 15:45:43,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:43,809 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 516 transitions. [2023-12-16 15:45:43,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:43,810 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 516 transitions. [2023-12-16 15:45:43,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 15:45:43,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:43,811 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:43,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-16 15:45:44,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:45:44,016 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:44,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:44,017 INFO L85 PathProgramCache]: Analyzing trace with hash 880886353, now seen corresponding path program 1 times [2023-12-16 15:45:44,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:44,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304253070] [2023-12-16 15:45:44,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:44,017 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 [2023-12-16 15:45:44,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:44,019 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:45:44,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-16 15:45:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:44,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 15:45:44,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:44,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-16 15:45:44,530 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 10 proven. 250 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-16 15:45:44,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:44,691 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-16 15:45:44,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2023-12-16 15:45:44,740 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-16 15:45:44,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:44,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304253070] [2023-12-16 15:45:44,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304253070] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 15:45:44,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:45:44,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-12-16 15:45:44,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654628108] [2023-12-16 15:45:44,740 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:45:44,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 15:45:44,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:44,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 15:45:44,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-16 15:45:44,741 INFO L87 Difference]: Start difference. First operand 426 states and 516 transitions. Second operand has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 2 states have call predecessors, (32), 4 states have call successors, (32) [2023-12-16 15:45:45,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:45,124 INFO L93 Difference]: Finished difference Result 747 states and 903 transitions. [2023-12-16 15:45:45,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 15:45:45,126 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 2 states have call predecessors, (32), 4 states have call successors, (32) Word has length 124 [2023-12-16 15:45:45,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:45,128 INFO L225 Difference]: With dead ends: 747 [2023-12-16 15:45:45,128 INFO L226 Difference]: Without dead ends: 456 [2023-12-16 15:45:45,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-16 15:45:45,129 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 322 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:45,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 390 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:45:45,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2023-12-16 15:45:45,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 442. [2023-12-16 15:45:45,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 356 states have (on average 1.1573033707865168) internal successors, (412), 358 states have internal predecessors, (412), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-16 15:45:45,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 524 transitions. [2023-12-16 15:45:45,190 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 524 transitions. Word has length 124 [2023-12-16 15:45:45,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:45,190 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 524 transitions. [2023-12-16 15:45:45,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 2 states have call predecessors, (32), 4 states have call successors, (32) [2023-12-16 15:45:45,191 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 524 transitions. [2023-12-16 15:45:45,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 15:45:45,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:45,192 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:45,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-12-16 15:45:45,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:45:45,397 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:45,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:45,398 INFO L85 PathProgramCache]: Analyzing trace with hash -584941359, now seen corresponding path program 1 times [2023-12-16 15:45:45,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:45,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884681920] [2023-12-16 15:45:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:45,398 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 [2023-12-16 15:45:45,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:45,400 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:45:45,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-16 15:45:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:45,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 15:45:45,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:46,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-16 15:45:46,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-16 15:45:46,245 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 304 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-12-16 15:45:46,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:46,394 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 15:45:46,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:46,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884681920] [2023-12-16 15:45:46,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884681920] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:45:46,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:45:46,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 13 [2023-12-16 15:45:46,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999722411] [2023-12-16 15:45:46,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:46,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 15:45:46,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:46,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 15:45:46,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-16 15:45:46,396 INFO L87 Difference]: Start difference. First operand 442 states and 524 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:46,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:46,763 INFO L93 Difference]: Finished difference Result 901 states and 1094 transitions. [2023-12-16 15:45:46,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 15:45:46,764 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 15:45:46,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:46,766 INFO L225 Difference]: With dead ends: 901 [2023-12-16 15:45:46,767 INFO L226 Difference]: Without dead ends: 602 [2023-12-16 15:45:46,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-12-16 15:45:46,768 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 278 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:46,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 713 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:45:46,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2023-12-16 15:45:46,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 468. [2023-12-16 15:45:46,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 382 states have (on average 1.1649214659685865) internal successors, (445), 384 states have internal predecessors, (445), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-16 15:45:46,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 557 transitions. [2023-12-16 15:45:46,838 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 557 transitions. Word has length 124 [2023-12-16 15:45:46,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:46,839 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 557 transitions. [2023-12-16 15:45:46,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:46,839 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 557 transitions. [2023-12-16 15:45:46,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 15:45:46,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:46,841 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:46,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-16 15:45:47,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:45:47,047 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:47,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:47,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1765477338, now seen corresponding path program 1 times [2023-12-16 15:45:47,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:47,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257180783] [2023-12-16 15:45:47,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:47,048 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 [2023-12-16 15:45:47,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:47,048 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:45:47,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-16 15:45:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:47,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 15:45:47,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:47,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-16 15:45:48,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-16 15:45:48,055 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 6 proven. 334 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-16 15:45:48,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:48,289 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:45:48,290 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 30 treesize of output 33 [2023-12-16 15:45:48,417 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:48,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257180783] [2023-12-16 15:45:48,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257180783] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:45:48,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1963899549] [2023-12-16 15:45:48,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:48,418 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 15:45:48,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 15:45:48,419 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 15:45:48,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-12-16 15:45:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:48,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-16 15:45:48,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:52,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-16 15:45:52,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-12-16 15:45:52,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2023-12-16 15:45:52,195 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 29 proven. 307 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-16 15:45:52,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:52,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-12-16 15:45:52,556 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:45:52,556 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 30 treesize of output 33 [2023-12-16 15:45:52,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1963899549] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:45:52,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:45:52,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18] total 31 [2023-12-16 15:45:52,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846871810] [2023-12-16 15:45:52,679 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:45:52,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-16 15:45:52,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:52,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-16 15:45:52,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1531, Unknown=0, NotChecked=0, Total=1722 [2023-12-16 15:45:52,681 INFO L87 Difference]: Start difference. First operand 468 states and 557 transitions. Second operand has 32 states, 27 states have (on average 4.148148148148148) internal successors, (112), 26 states have internal predecessors, (112), 11 states have call successors, (32), 10 states have call predecessors, (32), 11 states have return successors, (32), 7 states have call predecessors, (32), 11 states have call successors, (32) [2023-12-16 15:45:54,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:54,606 INFO L93 Difference]: Finished difference Result 879 states and 1048 transitions. [2023-12-16 15:45:54,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-16 15:45:54,609 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 4.148148148148148) internal successors, (112), 26 states have internal predecessors, (112), 11 states have call successors, (32), 10 states have call predecessors, (32), 11 states have return successors, (32), 7 states have call predecessors, (32), 11 states have call successors, (32) Word has length 124 [2023-12-16 15:45:54,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:54,611 INFO L225 Difference]: With dead ends: 879 [2023-12-16 15:45:54,611 INFO L226 Difference]: Without dead ends: 554 [2023-12-16 15:45:54,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 320 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=602, Invalid=3180, Unknown=0, NotChecked=0, Total=3782 [2023-12-16 15:45:54,613 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 429 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:54,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 1064 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 15:45:54,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-12-16 15:45:54,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 321. [2023-12-16 15:45:54,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 268 states have (on average 1.1529850746268657) internal successors, (309), 268 states have internal predecessors, (309), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-16 15:45:54,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 373 transitions. [2023-12-16 15:45:54,667 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 373 transitions. Word has length 124 [2023-12-16 15:45:54,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:54,667 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 373 transitions. [2023-12-16 15:45:54,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 4.148148148148148) internal successors, (112), 26 states have internal predecessors, (112), 11 states have call successors, (32), 10 states have call predecessors, (32), 11 states have return successors, (32), 7 states have call predecessors, (32), 11 states have call successors, (32) [2023-12-16 15:45:54,668 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 373 transitions. [2023-12-16 15:45:54,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 15:45:54,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:54,669 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:54,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-16 15:45:54,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2023-12-16 15:45:55,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 15:45:55,074 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:55,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:55,075 INFO L85 PathProgramCache]: Analyzing trace with hash 262306184, now seen corresponding path program 1 times [2023-12-16 15:45:55,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:55,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606397471] [2023-12-16 15:45:55,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:55,075 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 [2023-12-16 15:45:55,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:55,076 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:45:55,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-16 15:45:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:55,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-16 15:45:55,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:56,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-12-16 15:45:56,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-12-16 15:45:56,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2023-12-16 15:45:56,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 30 [2023-12-16 15:45:56,724 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 6 proven. 334 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-16 15:45:56,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 15:45:57,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:57,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606397471] [2023-12-16 15:45:57,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606397471] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:45:57,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:45:57,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [25] total 35 [2023-12-16 15:45:57,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625209141] [2023-12-16 15:45:57,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:57,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 15:45:57,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:57,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 15:45:57,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1088, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 15:45:57,181 INFO L87 Difference]: Start difference. First operand 321 states and 373 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:58,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:45:58,343 INFO L93 Difference]: Finished difference Result 673 states and 800 transitions. [2023-12-16 15:45:58,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 15:45:58,343 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-16 15:45:58,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:45:58,344 INFO L225 Difference]: With dead ends: 673 [2023-12-16 15:45:58,344 INFO L226 Difference]: Without dead ends: 447 [2023-12-16 15:45:58,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=234, Invalid=2216, Unknown=0, NotChecked=0, Total=2450 [2023-12-16 15:45:58,346 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 259 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 15:45:58,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 1630 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 15:45:58,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-12-16 15:45:58,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 321. [2023-12-16 15:45:58,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 268 states have (on average 1.1529850746268657) internal successors, (309), 268 states have internal predecessors, (309), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-16 15:45:58,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 373 transitions. [2023-12-16 15:45:58,403 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 373 transitions. Word has length 124 [2023-12-16 15:45:58,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:45:58,403 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 373 transitions. [2023-12-16 15:45:58,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 15:45:58,404 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 373 transitions. [2023-12-16 15:45:58,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 15:45:58,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:45:58,404 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:45:58,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-16 15:45:58,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:45:58,610 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:45:58,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:45:58,610 INFO L85 PathProgramCache]: Analyzing trace with hash 942364554, now seen corresponding path program 1 times [2023-12-16 15:45:58,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:45:58,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011172584] [2023-12-16 15:45:58,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:45:58,611 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 [2023-12-16 15:45:58,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:45:58,612 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:45:58,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-16 15:45:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:45:58,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 15:45:58,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:45:59,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-16 15:45:59,694 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 20 treesize of output 12 [2023-12-16 15:45:59,724 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 3 proven. 253 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-16 15:45:59,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:45:59,875 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-16 15:45:59,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:45:59,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011172584] [2023-12-16 15:45:59,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011172584] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:45:59,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:45:59,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-16 15:45:59,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683115197] [2023-12-16 15:45:59,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:45:59,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:45:59,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:45:59,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:45:59,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-16 15:45:59,876 INFO L87 Difference]: Start difference. First operand 321 states and 373 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Received shutdown request... [2023-12-16 15:45:59,879 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 [2023-12-16 15:45:59,879 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 (27)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 15:45:59,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 15:45:59,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-16 15:45:59,897 INFO L413 NwaCegarLoop]: 0 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, 0 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 [2023-12-16 15:45:59,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:45:59,899 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 15:45:59,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-16 15:46:00,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:46:00,105 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (321states) and FLOYD_HOARE automaton (currently 2 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-16 15:46:00,109 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:46:00,111 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 15:46:00,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 03:46:00 BoogieIcfgContainer [2023-12-16 15:46:00,112 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 15:46:00,113 INFO L158 Benchmark]: Toolchain (without parser) took 62500.94ms. Allocated memory was 278.9MB in the beginning and 483.4MB in the end (delta: 204.5MB). Free memory was 225.9MB in the beginning and 189.4MB in the end (delta: 36.5MB). Peak memory consumption was 242.5MB. Max. memory is 8.0GB. [2023-12-16 15:46:00,113 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 217.1MB. Free memory was 166.0MB in the beginning and 165.8MB in the end (delta: 172.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 15:46:00,113 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.18ms. Allocated memory is still 278.9MB. Free memory was 225.9MB in the beginning and 211.1MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 15:46:00,113 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.30ms. Allocated memory is still 278.9MB. Free memory was 210.6MB in the beginning and 208.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 15:46:00,113 INFO L158 Benchmark]: Boogie Preprocessor took 89.99ms. Allocated memory is still 278.9MB. Free memory was 207.5MB in the beginning and 202.8MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 15:46:00,114 INFO L158 Benchmark]: RCFGBuilder took 715.93ms. Allocated memory is still 278.9MB. Free memory was 202.8MB in the beginning and 160.3MB in the end (delta: 42.5MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. [2023-12-16 15:46:00,114 INFO L158 Benchmark]: TraceAbstraction took 61360.30ms. Allocated memory was 278.9MB in the beginning and 483.4MB in the end (delta: 204.5MB). Free memory was 159.8MB in the beginning and 189.4MB in the end (delta: -29.5MB). Peak memory consumption was 176.4MB. Max. memory is 8.0GB. [2023-12-16 15:46:00,115 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 217.1MB. Free memory was 166.0MB in the beginning and 165.8MB in the end (delta: 172.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 272.18ms. Allocated memory is still 278.9MB. Free memory was 225.9MB in the beginning and 211.1MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 56.30ms. Allocated memory is still 278.9MB. Free memory was 210.6MB in the beginning and 208.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 89.99ms. Allocated memory is still 278.9MB. Free memory was 207.5MB in the beginning and 202.8MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 715.93ms. Allocated memory is still 278.9MB. Free memory was 202.8MB in the beginning and 160.3MB in the end (delta: 42.5MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. * TraceAbstraction took 61360.30ms. Allocated memory was 278.9MB in the beginning and 483.4MB in the end (delta: 204.5MB). Free memory was 159.8MB in the beginning and 189.4MB in the end (delta: -29.5MB). Peak memory consumption was 176.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (321states) and FLOYD_HOARE automaton (currently 2 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 91 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 61.3s, OverallIterations: 22, TraceHistogramMax: 16, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 16.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5247 SdHoareTripleChecker+Valid, 7.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5244 mSDsluCounter, 14486 SdHoareTripleChecker+Invalid, 6.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11936 mSDsCounter, 830 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6446 IncrementalHoareTripleChecker+Invalid, 7276 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 830 mSolverCounterUnsat, 2550 mSDtfsCounter, 6446 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5295 GetRequests, 4698 SyntacticMatches, 6 SemanticMatches, 591 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 6669 ImplicationChecksByTransitivity, 17.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=501occurred in iteration=12, InterpolantAutomatonStates: 270, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 21 MinimizatonAttempts, 1420 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 33.0s InterpolantComputationTime, 3146 NumberOfCodeBlocks, 3146 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 4821 ConstructedInterpolants, 64 QuantifiedInterpolants, 48878 SizeOfPredicates, 425 NumberOfNonLiveVariables, 7783 ConjunctsInSsa, 442 ConjunctsInUnsatCore, 40 InterpolantComputations, 17 PerfectInterpolantSequences, 13717/19200 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