/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-62.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 15:31:06,870 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 15:31:06,958 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 15:31:06,962 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 15:31:06,963 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 15:31:06,988 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 15:31:06,988 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 15:31:06,989 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 15:31:06,989 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 15:31:06,993 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 15:31:06,993 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 15:31:06,993 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 15:31:06,994 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 15:31:06,995 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 15:31:06,995 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 15:31:06,996 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 15:31:06,996 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 15:31:06,996 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 15:31:06,997 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 15:31:06,998 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 15:31:06,998 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 15:31:06,998 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 15:31:06,998 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 15:31:06,999 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 15:31:06,999 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 15:31:06,999 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 15:31:06,999 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 15:31:06,999 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 15:31:07,000 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 15:31:07,000 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 15:31:07,001 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 15:31:07,001 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 15:31:07,001 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 15:31:07,001 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 15:31:07,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 15:31:07,002 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 15:31:07,002 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 15:31:07,002 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 15:31:07,002 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 15:31:07,002 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 15:31:07,002 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 15:31:07,002 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 15:31:07,003 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 15:31:07,003 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 15:31:07,003 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 15:31:07,003 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 15:31:07,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 15:31:07,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 15:31:07,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 15:31:07,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 15:31:07,257 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 15:31:07,257 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 15:31:07,259 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-62.i [2023-12-16 15:31:08,327 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 15:31:08,536 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 15:31:08,537 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-62.i [2023-12-16 15:31:08,543 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11a20efd8/9bd6460ca34543c1b4aea2ce56f0f528/FLAG402e85471 [2023-12-16 15:31:08,553 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11a20efd8/9bd6460ca34543c1b4aea2ce56f0f528 [2023-12-16 15:31:08,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 15:31:08,555 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 15:31:08,557 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 15:31:08,557 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 15:31:08,566 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 15:31:08,566 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:31:08" (1/1) ... [2023-12-16 15:31:08,567 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44e725fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:31:08, skipping insertion in model container [2023-12-16 15:31:08,567 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:31:08" (1/1) ... [2023-12-16 15:31:08,597 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 15:31:08,720 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-62.i[916,929] [2023-12-16 15:31:08,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 15:31:08,775 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 15:31:08,786 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-62.i[916,929] [2023-12-16 15:31:08,818 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 15:31:08,844 INFO L206 MainTranslator]: Completed translation [2023-12-16 15:31:08,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:31:08 WrapperNode [2023-12-16 15:31:08,845 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 15:31:08,849 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 15:31:08,849 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 15:31:08,849 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 15:31:08,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:31:08" (1/1) ... [2023-12-16 15:31:08,867 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:31:08" (1/1) ... [2023-12-16 15:31:08,895 INFO L138 Inliner]: procedures = 33, calls = 111, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 328 [2023-12-16 15:31:08,895 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 15:31:08,896 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 15:31:08,896 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 15:31:08,896 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 15:31:08,907 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:31:08" (1/1) ... [2023-12-16 15:31:08,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:31:08" (1/1) ... [2023-12-16 15:31:08,914 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:31:08" (1/1) ... [2023-12-16 15:31:08,929 INFO L175 MemorySlicer]: Split 87 memory accesses to 6 slices as follows [2, 10, 29, 26, 4, 16]. 33 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 1, 3, 3, 1, 2]. The 14 writes are split as follows [0, 1, 4, 6, 1, 2]. [2023-12-16 15:31:08,930 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:31:08" (1/1) ... [2023-12-16 15:31:08,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:31:08" (1/1) ... [2023-12-16 15:31:08,947 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:31:08" (1/1) ... [2023-12-16 15:31:08,950 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:31:08" (1/1) ... [2023-12-16 15:31:08,953 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:31:08" (1/1) ... [2023-12-16 15:31:08,955 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:31:08" (1/1) ... [2023-12-16 15:31:08,960 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 15:31:08,961 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 15:31:08,961 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 15:31:08,961 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 15:31:08,962 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:31:08" (1/1) ... [2023-12-16 15:31:08,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 15:31:08,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 15:31:08,997 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 15:31:09,011 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 15:31:09,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 15:31:09,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-16 15:31:09,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-16 15:31:09,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-16 15:31:09,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-16 15:31:09,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-16 15:31:09,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-16 15:31:09,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-16 15:31:09,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-16 15:31:09,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-16 15:31:09,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-16 15:31:09,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-16 15:31:09,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-16 15:31:09,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 15:31:09,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 15:31:09,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-16 15:31:09,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-16 15:31:09,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-16 15:31:09,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-16 15:31:09,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-16 15:31:09,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-16 15:31:09,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-16 15:31:09,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-16 15:31:09,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-16 15:31:09,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-16 15:31:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 15:31:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 15:31:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-16 15:31:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-16 15:31:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-16 15:31:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-16 15:31:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-16 15:31:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-16 15:31:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-16 15:31:09,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-16 15:31:09,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-16 15:31:09,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-16 15:31:09,061 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 15:31:09,061 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 15:31:09,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 15:31:09,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 15:31:09,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-16 15:31:09,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-16 15:31:09,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-16 15:31:09,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-16 15:31:09,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-16 15:31:09,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-16 15:31:09,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-16 15:31:09,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-16 15:31:09,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-16 15:31:09,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-16 15:31:09,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-16 15:31:09,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-16 15:31:09,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 15:31:09,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 15:31:09,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-16 15:31:09,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-16 15:31:09,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-16 15:31:09,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-16 15:31:09,237 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 15:31:09,239 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 15:31:09,533 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 15:31:09,566 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 15:31:09,566 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 15:31:09,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:31:09 BoogieIcfgContainer [2023-12-16 15:31:09,567 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 15:31:09,569 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 15:31:09,569 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 15:31:09,572 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 15:31:09,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:31:08" (1/3) ... [2023-12-16 15:31:09,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a97edac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:31:09, skipping insertion in model container [2023-12-16 15:31:09,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:31:08" (2/3) ... [2023-12-16 15:31:09,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a97edac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:31:09, skipping insertion in model container [2023-12-16 15:31:09,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:31:09" (3/3) ... [2023-12-16 15:31:09,574 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-62.i [2023-12-16 15:31:09,585 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 15:31:09,586 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 15:31:09,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 15:31:09,625 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;@2d59a544, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 15:31:09,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 15:31:09,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 56 states have internal predecessors, (81), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 15:31:09,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-16 15:31:09,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:09,639 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:09,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:09,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:09,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1944691701, now seen corresponding path program 1 times [2023-12-16 15:31:09,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:09,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215508527] [2023-12-16 15:31:09,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:09,655 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 15:31:09,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:09,658 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 15:31:09,661 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 (2)] Waiting until timeout for monitored process [2023-12-16 15:31:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:09,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 15:31:09,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:09,890 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-16 15:31:09,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:31:09,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:09,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215508527] [2023-12-16 15:31:09,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215508527] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:31:09,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:31:09,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 15:31:09,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336059942] [2023-12-16 15:31:09,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:09,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 15:31:09,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:09,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 15:31:09,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 15:31:09,922 INFO L87 Difference]: Start difference. First operand has 66 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 56 states have internal predecessors, (81), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 15:31:09,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:09,968 INFO L93 Difference]: Finished difference Result 129 states and 200 transitions. [2023-12-16 15:31:09,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 15:31:09,971 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2023-12-16 15:31:09,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:09,977 INFO L225 Difference]: With dead ends: 129 [2023-12-16 15:31:09,977 INFO L226 Difference]: Without dead ends: 64 [2023-12-16 15:31:09,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 67 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 15:31:09,988 INFO L413 NwaCegarLoop]: 88 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, 88 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 15:31:09,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:31:10,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-16 15:31:10,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-12-16 15:31:10,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 54 states have internal predecessors, (76), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 15:31:10,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 92 transitions. [2023-12-16 15:31:10,024 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 92 transitions. Word has length 68 [2023-12-16 15:31:10,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:10,025 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 92 transitions. [2023-12-16 15:31:10,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 15:31:10,025 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 92 transitions. [2023-12-16 15:31:10,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-16 15:31:10,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:10,028 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:10,035 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 15:31:10,232 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 15:31:10,233 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:10,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:10,233 INFO L85 PathProgramCache]: Analyzing trace with hash -2005151749, now seen corresponding path program 1 times [2023-12-16 15:31:10,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:10,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822600470] [2023-12-16 15:31:10,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:10,234 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 15:31:10,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:10,236 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 15:31:10,237 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 15:31:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:10,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 15:31:10,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:10,455 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:31:10,455 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:31:10,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:10,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822600470] [2023-12-16 15:31:10,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822600470] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:31:10,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:31:10,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 15:31:10,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137990631] [2023-12-16 15:31:10,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:10,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 15:31:10,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:10,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 15:31:10,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 15:31:10,458 INFO L87 Difference]: Start difference. First operand 64 states and 92 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:10,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:10,613 INFO L93 Difference]: Finished difference Result 151 states and 217 transitions. [2023-12-16 15:31:10,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 15:31:10,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 68 [2023-12-16 15:31:10,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:10,618 INFO L225 Difference]: With dead ends: 151 [2023-12-16 15:31:10,618 INFO L226 Difference]: Without dead ends: 88 [2023-12-16 15:31:10,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-16 15:31:10,621 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 53 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:10,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 399 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:31:10,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-16 15:31:10,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 70. [2023-12-16 15:31:10,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 60 states have (on average 1.3666666666666667) internal successors, (82), 60 states have internal predecessors, (82), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 15:31:10,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2023-12-16 15:31:10,638 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 68 [2023-12-16 15:31:10,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:10,640 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2023-12-16 15:31:10,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:10,640 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2023-12-16 15:31:10,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-16 15:31:10,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:10,641 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:10,648 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 15:31:10,842 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 15:31:10,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:10,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:10,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1947893447, now seen corresponding path program 1 times [2023-12-16 15:31:10,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:10,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540969982] [2023-12-16 15:31:10,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:10,844 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:31:10,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:10,845 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 15:31:10,857 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 15:31:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:10,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 15:31:10,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:31:11,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:31:11,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:11,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540969982] [2023-12-16 15:31:11,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540969982] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:31:11,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:31:11,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 15:31:11,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399657329] [2023-12-16 15:31:11,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:11,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 15:31:11,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:11,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 15:31:11,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 15:31:11,031 INFO L87 Difference]: Start difference. First operand 70 states and 98 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:11,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:11,203 INFO L93 Difference]: Finished difference Result 158 states and 218 transitions. [2023-12-16 15:31:11,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 15:31:11,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 68 [2023-12-16 15:31:11,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:11,206 INFO L225 Difference]: With dead ends: 158 [2023-12-16 15:31:11,206 INFO L226 Difference]: Without dead ends: 89 [2023-12-16 15:31:11,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-12-16 15:31:11,208 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 43 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:11,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 472 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:31:11,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-16 15:31:11,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2023-12-16 15:31:11,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 62 states have (on average 1.3548387096774193) internal successors, (84), 62 states have internal predecessors, (84), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 15:31:11,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 100 transitions. [2023-12-16 15:31:11,215 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 100 transitions. Word has length 68 [2023-12-16 15:31:11,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:11,215 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 100 transitions. [2023-12-16 15:31:11,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:11,216 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 100 transitions. [2023-12-16 15:31:11,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-16 15:31:11,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:11,217 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:11,228 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 (4)] Ended with exit code 0 [2023-12-16 15:31:11,423 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 15:31:11,424 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:11,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:11,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1947833865, now seen corresponding path program 1 times [2023-12-16 15:31:11,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:11,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977209247] [2023-12-16 15:31:11,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:11,426 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:31:11,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:11,427 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 15:31:11,432 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 15:31:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:11,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 15:31:11,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:11,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-16 15:31:11,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-16 15:31:11,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2023-12-16 15:31:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:31:11,695 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:31:11,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:11,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977209247] [2023-12-16 15:31:11,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977209247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:31:11,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:31:11,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 15:31:11,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019336030] [2023-12-16 15:31:11,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:11,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 15:31:11,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:11,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 15:31:11,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 15:31:11,700 INFO L87 Difference]: Start difference. First operand 72 states and 100 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:11,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:11,811 INFO L93 Difference]: Finished difference Result 166 states and 232 transitions. [2023-12-16 15:31:11,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 15:31:11,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 68 [2023-12-16 15:31:11,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:11,814 INFO L225 Difference]: With dead ends: 166 [2023-12-16 15:31:11,814 INFO L226 Difference]: Without dead ends: 95 [2023-12-16 15:31:11,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 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 15:31:11,815 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 90 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:11,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 224 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:31:11,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-16 15:31:11,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 70. [2023-12-16 15:31:11,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 60 states have (on average 1.35) internal successors, (81), 60 states have internal predecessors, (81), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 15:31:11,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 97 transitions. [2023-12-16 15:31:11,821 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 97 transitions. Word has length 68 [2023-12-16 15:31:11,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:11,822 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 97 transitions. [2023-12-16 15:31:11,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:11,822 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 97 transitions. [2023-12-16 15:31:11,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-16 15:31:11,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:11,823 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:11,833 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 15:31:12,024 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 15:31:12,024 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:12,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:12,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1661631908, now seen corresponding path program 1 times [2023-12-16 15:31:12,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:12,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246811591] [2023-12-16 15:31:12,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:12,026 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 15:31:12,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:12,027 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 15:31:12,028 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 (6)] Waiting until timeout for monitored process [2023-12-16 15:31:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:12,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 15:31:12,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:12,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-16 15:31:12,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 25 [2023-12-16 15:31:12,213 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:31:12,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:31:12,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:12,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246811591] [2023-12-16 15:31:12,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246811591] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:31:12,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:31:12,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 15:31:12,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459145981] [2023-12-16 15:31:12,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:12,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 15:31:12,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:12,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 15:31:12,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 15:31:12,216 INFO L87 Difference]: Start difference. First operand 70 states and 97 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:12,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:12,433 INFO L93 Difference]: Finished difference Result 234 states and 325 transitions. [2023-12-16 15:31:12,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 15:31:12,434 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 70 [2023-12-16 15:31:12,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:12,435 INFO L225 Difference]: With dead ends: 234 [2023-12-16 15:31:12,435 INFO L226 Difference]: Without dead ends: 165 [2023-12-16 15:31:12,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-16 15:31:12,436 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 199 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:12,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 554 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:31:12,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-16 15:31:12,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 80. [2023-12-16 15:31:12,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 70 states have (on average 1.3571428571428572) internal successors, (95), 70 states have internal predecessors, (95), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 15:31:12,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 111 transitions. [2023-12-16 15:31:12,444 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 111 transitions. Word has length 70 [2023-12-16 15:31:12,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:12,444 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 111 transitions. [2023-12-16 15:31:12,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:12,445 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 111 transitions. [2023-12-16 15:31:12,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-16 15:31:12,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:12,446 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:12,452 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 15:31:12,650 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 15:31:12,650 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:12,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:12,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1362359734, now seen corresponding path program 1 times [2023-12-16 15:31:12,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:12,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068029958] [2023-12-16 15:31:12,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:12,652 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 15:31:12,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:12,653 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 15:31:12,654 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 15:31:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:12,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 15:31:12,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 33 proven. 18 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-16 15:31:12,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:31:13,005 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:31:13,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:13,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068029958] [2023-12-16 15:31:13,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068029958] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:31:13,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:31:13,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2023-12-16 15:31:13,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676653268] [2023-12-16 15:31:13,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:13,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:31:13,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:13,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:31:13,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-16 15:31:13,007 INFO L87 Difference]: Start difference. First operand 80 states and 111 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:13,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:13,089 INFO L93 Difference]: Finished difference Result 217 states and 299 transitions. [2023-12-16 15:31:13,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:31:13,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 72 [2023-12-16 15:31:13,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:13,091 INFO L225 Difference]: With dead ends: 217 [2023-12-16 15:31:13,091 INFO L226 Difference]: Without dead ends: 138 [2023-12-16 15:31:13,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-16 15:31:13,092 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 81 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:13,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 450 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:31:13,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-12-16 15:31:13,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 80. [2023-12-16 15:31:13,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 70 states have (on average 1.3428571428571427) internal successors, (94), 70 states have internal predecessors, (94), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 15:31:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 110 transitions. [2023-12-16 15:31:13,098 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 110 transitions. Word has length 72 [2023-12-16 15:31:13,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:13,098 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 110 transitions. [2023-12-16 15:31:13,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:13,099 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 110 transitions. [2023-12-16 15:31:13,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-16 15:31:13,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:13,100 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:13,108 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 15:31:13,304 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 15:31:13,304 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:13,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:13,305 INFO L85 PathProgramCache]: Analyzing trace with hash -686157583, now seen corresponding path program 1 times [2023-12-16 15:31:13,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:13,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200601637] [2023-12-16 15:31:13,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:13,305 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 15:31:13,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:13,306 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 15:31:13,311 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 15:31:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:13,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 15:31:13,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:13,445 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:31:13,445 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:31:13,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:13,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200601637] [2023-12-16 15:31:13,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200601637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:31:13,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:31:13,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:31:13,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896025500] [2023-12-16 15:31:13,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:13,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:31:13,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:13,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:31:13,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:31:13,447 INFO L87 Difference]: Start difference. First operand 80 states and 110 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:13,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:13,491 INFO L93 Difference]: Finished difference Result 175 states and 241 transitions. [2023-12-16 15:31:13,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:31:13,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 72 [2023-12-16 15:31:13,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:13,493 INFO L225 Difference]: With dead ends: 175 [2023-12-16 15:31:13,493 INFO L226 Difference]: Without dead ends: 96 [2023-12-16 15:31:13,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 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 15:31:13,494 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 60 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:13,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 319 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:31:13,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-16 15:31:13,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 83. [2023-12-16 15:31:13,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 73 states have (on average 1.3287671232876712) internal successors, (97), 73 states have internal predecessors, (97), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 15:31:13,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 113 transitions. [2023-12-16 15:31:13,499 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 113 transitions. Word has length 72 [2023-12-16 15:31:13,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:13,500 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 113 transitions. [2023-12-16 15:31:13,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:13,500 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 113 transitions. [2023-12-16 15:31:13,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-16 15:31:13,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:13,501 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:13,508 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 15:31:13,712 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 15:31:13,712 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:13,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:13,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1885600574, now seen corresponding path program 1 times [2023-12-16 15:31:13,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:13,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587876674] [2023-12-16 15:31:13,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:13,713 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 15:31:13,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:13,714 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 15:31:13,715 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 15:31:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:13,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 15:31:13,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:13,981 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 15:31:14,019 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 33 proven. 18 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-16 15:31:14,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:31:14,110 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:31:14,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:14,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587876674] [2023-12-16 15:31:14,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587876674] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:31:14,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:31:14,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-16 15:31:14,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493179794] [2023-12-16 15:31:14,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:14,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:31:14,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:14,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:31:14,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-16 15:31:14,112 INFO L87 Difference]: Start difference. First operand 83 states and 113 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:14,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:14,178 INFO L93 Difference]: Finished difference Result 196 states and 265 transitions. [2023-12-16 15:31:14,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 15:31:14,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 72 [2023-12-16 15:31:14,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:14,179 INFO L225 Difference]: With dead ends: 196 [2023-12-16 15:31:14,179 INFO L226 Difference]: Without dead ends: 114 [2023-12-16 15:31:14,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-16 15:31:14,180 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 73 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:14,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 326 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:31:14,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-16 15:31:14,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 83. [2023-12-16 15:31:14,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 73 states have (on average 1.3150684931506849) internal successors, (96), 73 states have internal predecessors, (96), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 15:31:14,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 112 transitions. [2023-12-16 15:31:14,185 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 112 transitions. Word has length 72 [2023-12-16 15:31:14,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:14,185 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 112 transitions. [2023-12-16 15:31:14,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:14,185 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 112 transitions. [2023-12-16 15:31:14,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 15:31:14,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:14,186 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:14,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-16 15:31:14,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:31:14,393 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:14,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:14,394 INFO L85 PathProgramCache]: Analyzing trace with hash 772475292, now seen corresponding path program 1 times [2023-12-16 15:31:14,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:14,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131154862] [2023-12-16 15:31:14,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:14,394 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 15:31:14,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:14,395 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:31:14,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-16 15:31:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:14,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 15:31:14,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:14,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-16 15:31:14,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-16 15:31:14,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-16 15:31:14,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-16 15:31:14,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-16 15:31:14,731 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 7 [2023-12-16 15:31:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 63 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-16 15:31:14,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:31:14,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2023-12-16 15:31:14,948 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:14,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131154862] [2023-12-16 15:31:14,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131154862] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:31:14,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1339998699] [2023-12-16 15:31:14,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:14,949 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 15:31:14,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 15:31:14,994 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 15:31:15,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-16 15:31:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:15,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 15:31:15,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:15,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-16 15:31:15,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-16 15:31:15,499 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 15:31:15,537 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 63 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-16 15:31:15,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:31:15,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-12-16 15:31:15,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1339998699] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:31:15,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:31:15,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2023-12-16 15:31:15,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829599202] [2023-12-16 15:31:15,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:31:15,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 15:31:15,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:15,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 15:31:15,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2023-12-16 15:31:15,714 INFO L87 Difference]: Start difference. First operand 83 states and 112 transitions. Second operand has 15 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 15 states have internal predecessors, (69), 6 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (16), 4 states have call predecessors, (16), 6 states have call successors, (16) [2023-12-16 15:31:16,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:16,712 INFO L93 Difference]: Finished difference Result 227 states and 299 transitions. [2023-12-16 15:31:16,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 15:31:16,713 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 15 states have internal predecessors, (69), 6 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (16), 4 states have call predecessors, (16), 6 states have call successors, (16) Word has length 74 [2023-12-16 15:31:16,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:16,714 INFO L225 Difference]: With dead ends: 227 [2023-12-16 15:31:16,714 INFO L226 Difference]: Without dead ends: 145 [2023-12-16 15:31:16,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=243, Invalid=1017, Unknown=0, NotChecked=0, Total=1260 [2023-12-16 15:31:16,715 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 214 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:16,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 677 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 15:31:16,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-16 15:31:16,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 138. [2023-12-16 15:31:16,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 124 states have (on average 1.282258064516129) internal successors, (159), 125 states have internal predecessors, (159), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-16 15:31:16,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 179 transitions. [2023-12-16 15:31:16,727 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 179 transitions. Word has length 74 [2023-12-16 15:31:16,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:16,727 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 179 transitions. [2023-12-16 15:31:16,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 15 states have internal predecessors, (69), 6 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (16), 4 states have call predecessors, (16), 6 states have call successors, (16) [2023-12-16 15:31:16,727 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 179 transitions. [2023-12-16 15:31:16,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 15:31:16,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:16,728 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:16,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-12-16 15:31:16,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 15:31:17,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:31:17,132 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:17,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:17,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1615265287, now seen corresponding path program 1 times [2023-12-16 15:31:17,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:17,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301547684] [2023-12-16 15:31:17,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:17,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:31:17,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:17,134 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:31:17,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-16 15:31:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:17,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-16 15:31:17,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:17,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-16 15:31:17,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2023-12-16 15:31:17,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 36 [2023-12-16 15:31:17,788 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:31:17,788 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 65 treesize of output 33 [2023-12-16 15:31:17,892 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 53 proven. 15 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-16 15:31:17,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:31:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:31:18,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:18,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301547684] [2023-12-16 15:31:18,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301547684] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:31:18,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:31:18,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 20 [2023-12-16 15:31:18,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895700938] [2023-12-16 15:31:18,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:18,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 15:31:18,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:18,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 15:31:18,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2023-12-16 15:31:18,115 INFO L87 Difference]: Start difference. First operand 138 states and 179 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:18,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:18,551 INFO L93 Difference]: Finished difference Result 316 states and 408 transitions. [2023-12-16 15:31:18,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 15:31:18,552 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 75 [2023-12-16 15:31:18,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:18,554 INFO L225 Difference]: With dead ends: 316 [2023-12-16 15:31:18,554 INFO L226 Difference]: Without dead ends: 179 [2023-12-16 15:31:18,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2023-12-16 15:31:18,555 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 244 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:18,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 785 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:31:18,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-12-16 15:31:18,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 142. [2023-12-16 15:31:18,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 128 states have (on average 1.2734375) internal successors, (163), 129 states have internal predecessors, (163), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-16 15:31:18,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 183 transitions. [2023-12-16 15:31:18,562 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 183 transitions. Word has length 75 [2023-12-16 15:31:18,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:18,563 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 183 transitions. [2023-12-16 15:31:18,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:18,563 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 183 transitions. [2023-12-16 15:31:18,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 15:31:18,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:18,564 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:18,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-16 15:31:18,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:31:18,765 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:18,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:18,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1668584759, now seen corresponding path program 1 times [2023-12-16 15:31:18,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:18,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249293171] [2023-12-16 15:31:18,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:18,766 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 15:31:18,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:18,767 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 15:31:18,769 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 15:31:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:18,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 15:31:18,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:18,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-16 15:31:18,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-16 15:31:18,930 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 15:31:18,944 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:31:18,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:31:18,944 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:18,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249293171] [2023-12-16 15:31:18,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249293171] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:31:18,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:31:18,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:31:18,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082148277] [2023-12-16 15:31:18,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:18,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:31:18,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:18,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:31:18,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:31:18,946 INFO L87 Difference]: Start difference. First operand 142 states and 183 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:19,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:19,189 INFO L93 Difference]: Finished difference Result 312 states and 402 transitions. [2023-12-16 15:31:19,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 15:31:19,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 75 [2023-12-16 15:31:19,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:19,191 INFO L225 Difference]: With dead ends: 312 [2023-12-16 15:31:19,191 INFO L226 Difference]: Without dead ends: 171 [2023-12-16 15:31:19,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 15:31:19,192 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 110 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:19,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 388 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:31:19,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-12-16 15:31:19,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 136. [2023-12-16 15:31:19,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 122 states have (on average 1.2704918032786885) internal successors, (155), 123 states have internal predecessors, (155), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-16 15:31:19,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 175 transitions. [2023-12-16 15:31:19,198 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 175 transitions. Word has length 75 [2023-12-16 15:31:19,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:19,198 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 175 transitions. [2023-12-16 15:31:19,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:19,199 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 175 transitions. [2023-12-16 15:31:19,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 15:31:19,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:19,199 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:19,206 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 15:31:19,404 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 15:31:19,404 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:19,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:19,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1396410569, now seen corresponding path program 1 times [2023-12-16 15:31:19,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:19,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522230033] [2023-12-16 15:31:19,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:19,405 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 15:31:19,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:19,406 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 15:31:19,439 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 15:31:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:19,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 15:31:19,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:19,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-16 15:31:19,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-16 15:31:19,583 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 15:31:19,651 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:31:19,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:31:19,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:19,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522230033] [2023-12-16 15:31:19,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522230033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:31:19,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:31:19,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:31:19,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190429422] [2023-12-16 15:31:19,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:19,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:31:19,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:19,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:31:19,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:31:19,653 INFO L87 Difference]: Start difference. First operand 136 states and 175 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:20,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:20,010 INFO L93 Difference]: Finished difference Result 310 states and 398 transitions. [2023-12-16 15:31:20,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:31:20,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 75 [2023-12-16 15:31:20,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:20,013 INFO L225 Difference]: With dead ends: 310 [2023-12-16 15:31:20,013 INFO L226 Difference]: Without dead ends: 175 [2023-12-16 15:31:20,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 15:31:20,014 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 86 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:20,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 370 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 15:31:20,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-12-16 15:31:20,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 136. [2023-12-16 15:31:20,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 122 states have (on average 1.2622950819672132) internal successors, (154), 123 states have internal predecessors, (154), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-16 15:31:20,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 174 transitions. [2023-12-16 15:31:20,021 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 174 transitions. Word has length 75 [2023-12-16 15:31:20,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:20,021 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 174 transitions. [2023-12-16 15:31:20,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:20,021 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 174 transitions. [2023-12-16 15:31:20,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 15:31:20,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:20,022 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:20,028 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 15:31:20,223 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 15:31:20,223 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:20,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:20,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1887439477, now seen corresponding path program 1 times [2023-12-16 15:31:20,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:20,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671610222] [2023-12-16 15:31:20,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:20,224 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 15:31:20,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:20,225 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 15:31:20,234 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 15:31:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:20,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-16 15:31:20,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:20,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-16 15:31:20,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-16 15:31:20,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 21 [2023-12-16 15:31:20,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 40 [2023-12-16 15:31:20,873 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:31:20,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 36 [2023-12-16 15:31:20,962 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-16 15:31:20,962 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:31:20,962 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:20,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671610222] [2023-12-16 15:31:20,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671610222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:31:20,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:31:20,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-16 15:31:20,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65217885] [2023-12-16 15:31:20,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:20,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 15:31:20,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:20,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 15:31:20,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-12-16 15:31:20,965 INFO L87 Difference]: Start difference. First operand 136 states and 174 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 15:31:23,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:23,139 INFO L93 Difference]: Finished difference Result 779 states and 985 transitions. [2023-12-16 15:31:23,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-16 15:31:23,141 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2023-12-16 15:31:23,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:23,144 INFO L225 Difference]: With dead ends: 779 [2023-12-16 15:31:23,144 INFO L226 Difference]: Without dead ends: 644 [2023-12-16 15:31:23,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=423, Invalid=1557, Unknown=0, NotChecked=0, Total=1980 [2023-12-16 15:31:23,145 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 936 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:23,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 877 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 15:31:23,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2023-12-16 15:31:23,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 295. [2023-12-16 15:31:23,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 268 states have (on average 1.2611940298507462) internal successors, (338), 270 states have internal predecessors, (338), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 15:31:23,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 378 transitions. [2023-12-16 15:31:23,171 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 378 transitions. Word has length 75 [2023-12-16 15:31:23,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:23,171 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 378 transitions. [2023-12-16 15:31:23,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 15:31:23,172 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 378 transitions. [2023-12-16 15:31:23,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 15:31:23,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:23,173 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:23,184 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 15:31:23,377 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 15:31:23,377 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:23,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:23,378 INFO L85 PathProgramCache]: Analyzing trace with hash -292261228, now seen corresponding path program 1 times [2023-12-16 15:31:23,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:23,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606454315] [2023-12-16 15:31:23,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:23,378 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 15:31:23,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:23,379 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 15:31:23,380 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 15:31:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:23,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 15:31:23,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:23,611 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 15:31:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 33 proven. 18 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-16 15:31:23,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:31:23,706 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:31:23,706 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:23,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606454315] [2023-12-16 15:31:23,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606454315] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:31:23,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:31:23,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-16 15:31:23,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902032592] [2023-12-16 15:31:23,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:23,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:31:23,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:23,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:31:23,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-16 15:31:23,708 INFO L87 Difference]: Start difference. First operand 295 states and 378 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:23,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:23,778 INFO L93 Difference]: Finished difference Result 655 states and 840 transitions. [2023-12-16 15:31:23,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 15:31:23,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 75 [2023-12-16 15:31:23,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:23,781 INFO L225 Difference]: With dead ends: 655 [2023-12-16 15:31:23,781 INFO L226 Difference]: Without dead ends: 361 [2023-12-16 15:31:23,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-16 15:31:23,782 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 42 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:23,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 307 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:31:23,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-12-16 15:31:23,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 295. [2023-12-16 15:31:23,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 268 states have (on average 1.25) internal successors, (335), 270 states have internal predecessors, (335), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 15:31:23,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 375 transitions. [2023-12-16 15:31:23,798 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 375 transitions. Word has length 75 [2023-12-16 15:31:23,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:23,798 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 375 transitions. [2023-12-16 15:31:23,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:23,799 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 375 transitions. [2023-12-16 15:31:23,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 15:31:23,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:23,800 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:23,804 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 15:31:24,005 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 15:31:24,005 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:24,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:24,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1103962290, now seen corresponding path program 1 times [2023-12-16 15:31:24,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:24,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097177837] [2023-12-16 15:31:24,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:24,006 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 15:31:24,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:24,007 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 15:31:24,009 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 15:31:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:24,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 15:31:24,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:24,292 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 15:31:24,312 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 33 proven. 18 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-16 15:31:24,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:31:24,401 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:31:24,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:24,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097177837] [2023-12-16 15:31:24,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097177837] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:31:24,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:31:24,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-16 15:31:24,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284732658] [2023-12-16 15:31:24,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:24,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:31:24,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:24,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:31:24,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-16 15:31:24,403 INFO L87 Difference]: Start difference. First operand 295 states and 375 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:24,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:24,476 INFO L93 Difference]: Finished difference Result 745 states and 956 transitions. [2023-12-16 15:31:24,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:31:24,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 76 [2023-12-16 15:31:24,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:24,479 INFO L225 Difference]: With dead ends: 745 [2023-12-16 15:31:24,479 INFO L226 Difference]: Without dead ends: 451 [2023-12-16 15:31:24,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-16 15:31:24,480 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 111 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:24,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 265 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:31:24,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2023-12-16 15:31:24,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 305. [2023-12-16 15:31:24,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 278 states have (on average 1.2410071942446044) internal successors, (345), 280 states have internal predecessors, (345), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 15:31:24,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 385 transitions. [2023-12-16 15:31:24,495 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 385 transitions. Word has length 76 [2023-12-16 15:31:24,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:24,496 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 385 transitions. [2023-12-16 15:31:24,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:24,496 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 385 transitions. [2023-12-16 15:31:24,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 15:31:24,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:24,497 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:24,508 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 15:31:24,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:31:24,701 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:24,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:24,702 INFO L85 PathProgramCache]: Analyzing trace with hash 342453205, now seen corresponding path program 1 times [2023-12-16 15:31:24,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:24,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925212459] [2023-12-16 15:31:24,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:24,702 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 15:31:24,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:24,703 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:31:24,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-16 15:31:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:24,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 15:31:24,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:24,837 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 21 treesize of output 9 [2023-12-16 15:31:24,961 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 21 treesize of output 13 [2023-12-16 15:31:24,988 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:31:24,988 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:31:24,988 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:24,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925212459] [2023-12-16 15:31:24,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925212459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:31:24,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:31:24,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 15:31:24,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770198105] [2023-12-16 15:31:24,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:24,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 15:31:24,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:24,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 15:31:24,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 15:31:24,990 INFO L87 Difference]: Start difference. First operand 305 states and 385 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:25,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:25,502 INFO L93 Difference]: Finished difference Result 697 states and 874 transitions. [2023-12-16 15:31:25,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 15:31:25,502 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 76 [2023-12-16 15:31:25,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:25,504 INFO L225 Difference]: With dead ends: 697 [2023-12-16 15:31:25,504 INFO L226 Difference]: Without dead ends: 393 [2023-12-16 15:31:25,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-16 15:31:25,505 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 169 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:25,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 348 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 15:31:25,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2023-12-16 15:31:25,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 288. [2023-12-16 15:31:25,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 263 states have (on average 1.2129277566539924) internal successors, (319), 264 states have internal predecessors, (319), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 15:31:25,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 355 transitions. [2023-12-16 15:31:25,516 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 355 transitions. Word has length 76 [2023-12-16 15:31:25,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:25,516 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 355 transitions. [2023-12-16 15:31:25,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:25,516 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 355 transitions. [2023-12-16 15:31:25,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 15:31:25,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:25,517 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:25,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-16 15:31:25,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:31:25,722 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:25,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:25,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1636270173, now seen corresponding path program 1 times [2023-12-16 15:31:25,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:25,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856399095] [2023-12-16 15:31:25,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:25,722 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 15:31:25,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:25,723 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 15:31:25,724 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 15:31:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:25,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 15:31:25,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:25,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-16 15:31:25,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18 [2023-12-16 15:31:26,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 31 [2023-12-16 15:31:26,140 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:31:26,140 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 55 treesize of output 27 [2023-12-16 15:31:26,220 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-16 15:31:26,220 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:31:26,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:26,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856399095] [2023-12-16 15:31:26,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856399095] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:31:26,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:31:26,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-16 15:31:26,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932703777] [2023-12-16 15:31:26,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:26,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 15:31:26,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:26,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 15:31:26,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-16 15:31:26,222 INFO L87 Difference]: Start difference. First operand 288 states and 355 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 15:31:27,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:27,245 INFO L93 Difference]: Finished difference Result 825 states and 1019 transitions. [2023-12-16 15:31:27,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 15:31:27,245 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2023-12-16 15:31:27,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:27,247 INFO L225 Difference]: With dead ends: 825 [2023-12-16 15:31:27,247 INFO L226 Difference]: Without dead ends: 538 [2023-12-16 15:31:27,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2023-12-16 15:31:27,249 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 277 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:27,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 969 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 15:31:27,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2023-12-16 15:31:27,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 274. [2023-12-16 15:31:27,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 249 states have (on average 1.2208835341365463) internal successors, (304), 250 states have internal predecessors, (304), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 15:31:27,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 340 transitions. [2023-12-16 15:31:27,264 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 340 transitions. Word has length 76 [2023-12-16 15:31:27,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:27,265 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 340 transitions. [2023-12-16 15:31:27,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 15:31:27,265 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 340 transitions. [2023-12-16 15:31:27,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 15:31:27,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:27,265 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:27,274 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 15:31:27,470 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 15:31:27,470 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:27,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:27,470 INFO L85 PathProgramCache]: Analyzing trace with hash -2094073389, now seen corresponding path program 1 times [2023-12-16 15:31:27,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:27,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859017387] [2023-12-16 15:31:27,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:27,471 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 15:31:27,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:27,472 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 15:31:27,475 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 15:31:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:27,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 15:31:27,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:27,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-16 15:31:27,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2023-12-16 15:31:27,650 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:31:27,650 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 60 treesize of output 30 [2023-12-16 15:31:27,688 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:31:27,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:31:27,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:27,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859017387] [2023-12-16 15:31:27,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859017387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:31:27,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:31:27,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 15:31:27,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702089774] [2023-12-16 15:31:27,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:27,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 15:31:27,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:27,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 15:31:27,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-16 15:31:27,690 INFO L87 Difference]: Start difference. First operand 274 states and 340 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:28,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:28,073 INFO L93 Difference]: Finished difference Result 853 states and 1069 transitions. [2023-12-16 15:31:28,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 15:31:28,074 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 78 [2023-12-16 15:31:28,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:28,076 INFO L225 Difference]: With dead ends: 853 [2023-12-16 15:31:28,076 INFO L226 Difference]: Without dead ends: 580 [2023-12-16 15:31:28,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2023-12-16 15:31:28,078 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 400 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:28,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 663 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:31:28,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2023-12-16 15:31:28,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 419. [2023-12-16 15:31:28,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 374 states have (on average 1.1978609625668448) internal successors, (448), 378 states have internal predecessors, (448), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (32), 28 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-16 15:31:28,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 512 transitions. [2023-12-16 15:31:28,118 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 512 transitions. Word has length 78 [2023-12-16 15:31:28,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:28,119 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 512 transitions. [2023-12-16 15:31:28,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:28,119 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 512 transitions. [2023-12-16 15:31:28,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 15:31:28,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:28,120 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:28,127 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 15:31:28,324 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 15:31:28,324 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:28,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:28,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1875218671, now seen corresponding path program 1 times [2023-12-16 15:31:28,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:28,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340443472] [2023-12-16 15:31:28,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:28,325 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 15:31:28,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:28,326 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 15:31:28,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-16 15:31:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:28,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 15:31:28,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:28,581 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:31:28,581 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 19 [2023-12-16 15:31:28,606 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:31:28,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:31:28,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:28,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340443472] [2023-12-16 15:31:28,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340443472] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:31:28,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:31:28,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 15:31:28,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135859391] [2023-12-16 15:31:28,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:28,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 15:31:28,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:28,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 15:31:28,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 15:31:28,607 INFO L87 Difference]: Start difference. First operand 419 states and 512 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:28,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:28,847 INFO L93 Difference]: Finished difference Result 962 states and 1177 transitions. [2023-12-16 15:31:28,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 15:31:28,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 78 [2023-12-16 15:31:28,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:28,852 INFO L225 Difference]: With dead ends: 962 [2023-12-16 15:31:28,852 INFO L226 Difference]: Without dead ends: 568 [2023-12-16 15:31:28,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-16 15:31:28,853 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 91 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:28,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 557 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:31:28,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-12-16 15:31:28,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 417. [2023-12-16 15:31:28,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 374 states have (on average 1.1844919786096257) internal successors, (443), 377 states have internal predecessors, (443), 30 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-16 15:31:28,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 503 transitions. [2023-12-16 15:31:28,877 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 503 transitions. Word has length 78 [2023-12-16 15:31:28,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:28,877 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 503 transitions. [2023-12-16 15:31:28,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:28,878 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 503 transitions. [2023-12-16 15:31:28,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 15:31:28,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:28,878 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:28,885 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 15:31:29,082 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 15:31:29,082 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:29,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:29,083 INFO L85 PathProgramCache]: Analyzing trace with hash -606322452, now seen corresponding path program 1 times [2023-12-16 15:31:29,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:29,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945723129] [2023-12-16 15:31:29,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:29,084 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 15:31:29,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:29,084 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 15:31:29,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-16 15:31:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:29,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 15:31:29,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:29,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-16 15:31:29,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-12-16 15:31:29,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2023-12-16 15:31:29,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2023-12-16 15:31:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:31:29,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:31:29,331 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:29,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945723129] [2023-12-16 15:31:29,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945723129] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:31:29,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:31:29,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:31:29,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601436492] [2023-12-16 15:31:29,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:29,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:31:29,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:29,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:31:29,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:31:29,333 INFO L87 Difference]: Start difference. First operand 417 states and 503 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:29,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:29,465 INFO L93 Difference]: Finished difference Result 443 states and 536 transitions. [2023-12-16 15:31:29,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 15:31:29,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 80 [2023-12-16 15:31:29,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:29,470 INFO L225 Difference]: With dead ends: 443 [2023-12-16 15:31:29,470 INFO L226 Difference]: Without dead ends: 441 [2023-12-16 15:31:29,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 15:31:29,471 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 63 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:29,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 330 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:31:29,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-12-16 15:31:29,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 433. [2023-12-16 15:31:29,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 387 states have (on average 1.178294573643411) internal successors, (456), 390 states have internal predecessors, (456), 32 states have call successors, (32), 13 states have call predecessors, (32), 13 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-16 15:31:29,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 520 transitions. [2023-12-16 15:31:29,497 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 520 transitions. Word has length 80 [2023-12-16 15:31:29,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:29,497 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 520 transitions. [2023-12-16 15:31:29,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:29,497 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 520 transitions. [2023-12-16 15:31:29,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 15:31:29,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:29,498 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:29,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-16 15:31:29,702 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 15:31:29,702 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:29,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:29,703 INFO L85 PathProgramCache]: Analyzing trace with hash -606262870, now seen corresponding path program 1 times [2023-12-16 15:31:29,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:29,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119104841] [2023-12-16 15:31:29,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:29,703 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 15:31:29,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:29,704 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 15:31:29,705 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 15:31:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:29,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 15:31:29,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:29,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-16 15:31:29,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2023-12-16 15:31:29,907 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:31:29,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:31:29,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:29,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119104841] [2023-12-16 15:31:29,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119104841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:31:29,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:31:29,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:31:29,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744510265] [2023-12-16 15:31:29,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:29,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:31:29,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:29,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:31:29,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:31:29,910 INFO L87 Difference]: Start difference. First operand 433 states and 520 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:30,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:30,024 INFO L93 Difference]: Finished difference Result 845 states and 1012 transitions. [2023-12-16 15:31:30,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 15:31:30,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 80 [2023-12-16 15:31:30,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:30,027 INFO L225 Difference]: With dead ends: 845 [2023-12-16 15:31:30,027 INFO L226 Difference]: Without dead ends: 445 [2023-12-16 15:31:30,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 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 15:31:30,028 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 47 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:30,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 302 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:31:30,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2023-12-16 15:31:30,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2023-12-16 15:31:30,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 396 states have (on average 1.1641414141414141) internal successors, (461), 399 states have internal predecessors, (461), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-16 15:31:30,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 525 transitions. [2023-12-16 15:31:30,085 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 525 transitions. Word has length 80 [2023-12-16 15:31:30,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:30,086 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 525 transitions. [2023-12-16 15:31:30,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:30,086 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 525 transitions. [2023-12-16 15:31:30,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 15:31:30,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:30,087 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:30,091 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 15:31:30,291 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 15:31:30,291 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:30,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:30,291 INFO L85 PathProgramCache]: Analyzing trace with hash -549004568, now seen corresponding path program 1 times [2023-12-16 15:31:30,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:30,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671932324] [2023-12-16 15:31:30,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:30,292 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 15:31:30,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:30,293 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 15:31:30,294 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 15:31:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:30,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 15:31:30,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:30,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-16 15:31:30,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-16 15:31:30,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-16 15:31:30,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 34 [2023-12-16 15:31:30,753 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:31:30,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 37 [2023-12-16 15:31:30,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 31 [2023-12-16 15:31:31,232 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 63 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-16 15:31:31,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:31:31,421 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:31:31,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:31,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671932324] [2023-12-16 15:31:31,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671932324] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:31:31,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:31:31,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 14 [2023-12-16 15:31:31,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734864886] [2023-12-16 15:31:31,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:31,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 15:31:31,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:31,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 15:31:31,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-16 15:31:31,423 INFO L87 Difference]: Start difference. First operand 445 states and 525 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:31,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:31,849 INFO L93 Difference]: Finished difference Result 1119 states and 1322 transitions. [2023-12-16 15:31:31,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 15:31:31,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 80 [2023-12-16 15:31:31,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:31,854 INFO L225 Difference]: With dead ends: 1119 [2023-12-16 15:31:31,854 INFO L226 Difference]: Without dead ends: 707 [2023-12-16 15:31:31,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-12-16 15:31:31,856 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 66 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:31,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 346 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 15:31:31,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2023-12-16 15:31:31,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 638. [2023-12-16 15:31:31,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 589 states have (on average 1.1646859083191852) internal successors, (686), 592 states have internal predecessors, (686), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-16 15:31:31,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 750 transitions. [2023-12-16 15:31:31,888 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 750 transitions. Word has length 80 [2023-12-16 15:31:31,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:31,888 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 750 transitions. [2023-12-16 15:31:31,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:31,888 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 750 transitions. [2023-12-16 15:31:31,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-16 15:31:31,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:31,889 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:31,896 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 15:31:32,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:31:32,094 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:32,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:32,094 INFO L85 PathProgramCache]: Analyzing trace with hash 847893285, now seen corresponding path program 1 times [2023-12-16 15:31:32,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:32,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560445100] [2023-12-16 15:31:32,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:32,095 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 15:31:32,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:32,095 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:31:32,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-16 15:31:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:32,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 15:31:32,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:32,374 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 33 proven. 18 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-16 15:31:32,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:31:32,435 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:31:32,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:32,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560445100] [2023-12-16 15:31:32,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560445100] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:31:32,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:31:32,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2023-12-16 15:31:32,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844063024] [2023-12-16 15:31:32,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:32,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:31:32,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:32,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:31:32,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-16 15:31:32,436 INFO L87 Difference]: Start difference. First operand 638 states and 750 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:32,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:32,508 INFO L93 Difference]: Finished difference Result 1357 states and 1596 transitions. [2023-12-16 15:31:32,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 15:31:32,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 81 [2023-12-16 15:31:32,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:32,512 INFO L225 Difference]: With dead ends: 1357 [2023-12-16 15:31:32,512 INFO L226 Difference]: Without dead ends: 752 [2023-12-16 15:31:32,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-16 15:31:32,513 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 126 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:32,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 288 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:31:32,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2023-12-16 15:31:32,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 548. [2023-12-16 15:31:32,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 499 states have (on average 1.1523046092184368) internal successors, (575), 502 states have internal predecessors, (575), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-16 15:31:32,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 639 transitions. [2023-12-16 15:31:32,542 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 639 transitions. Word has length 81 [2023-12-16 15:31:32,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:32,542 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 639 transitions. [2023-12-16 15:31:32,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:32,543 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 639 transitions. [2023-12-16 15:31:32,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 15:31:32,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:32,543 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:32,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-12-16 15:31:32,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:31:32,747 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:32,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:32,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1067300445, now seen corresponding path program 1 times [2023-12-16 15:31:32,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:32,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44637559] [2023-12-16 15:31:32,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:32,748 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 15:31:32,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:32,749 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 15:31:32,750 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 15:31:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:32,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 15:31:32,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:32,892 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 21 treesize of output 9 [2023-12-16 15:31:32,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-16 15:31:33,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2023-12-16 15:31:33,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2023-12-16 15:31:33,197 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 15:31:33,214 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-16 15:31:33,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:31:33,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:33,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44637559] [2023-12-16 15:31:33,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44637559] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:31:33,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:31:33,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 15:31:33,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802578184] [2023-12-16 15:31:33,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:33,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 15:31:33,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:33,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 15:31:33,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 15:31:33,216 INFO L87 Difference]: Start difference. First operand 548 states and 639 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 15:31:33,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:33,844 INFO L93 Difference]: Finished difference Result 1224 states and 1421 transitions. [2023-12-16 15:31:33,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 15:31:33,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 82 [2023-12-16 15:31:33,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:33,847 INFO L225 Difference]: With dead ends: 1224 [2023-12-16 15:31:33,847 INFO L226 Difference]: Without dead ends: 709 [2023-12-16 15:31:33,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2023-12-16 15:31:33,849 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 325 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:33,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 406 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 15:31:33,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2023-12-16 15:31:33,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 623. [2023-12-16 15:31:33,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 574 states have (on average 1.146341463414634) internal successors, (658), 577 states have internal predecessors, (658), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-16 15:31:33,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 722 transitions. [2023-12-16 15:31:33,910 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 722 transitions. Word has length 82 [2023-12-16 15:31:33,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:33,910 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 722 transitions. [2023-12-16 15:31:33,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 15:31:33,911 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 722 transitions. [2023-12-16 15:31:33,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 15:31:33,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:33,912 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:33,919 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 15:31:34,116 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 15:31:34,116 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:34,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:34,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1832706834, now seen corresponding path program 1 times [2023-12-16 15:31:34,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:34,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069972855] [2023-12-16 15:31:34,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:34,117 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 15:31:34,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:34,118 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 15:31:34,119 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 15:31:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:34,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 15:31:34,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:34,252 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 21 treesize of output 9 [2023-12-16 15:31:34,314 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 21 treesize of output 13 [2023-12-16 15:31:34,328 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:31:34,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:31:34,328 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:34,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069972855] [2023-12-16 15:31:34,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069972855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:31:34,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:31:34,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:31:34,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540266229] [2023-12-16 15:31:34,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:34,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 15:31:34,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:34,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 15:31:34,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 15:31:34,329 INFO L87 Difference]: Start difference. First operand 623 states and 722 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:34,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:34,605 INFO L93 Difference]: Finished difference Result 1179 states and 1368 transitions. [2023-12-16 15:31:34,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 15:31:34,637 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 82 [2023-12-16 15:31:34,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:34,639 INFO L225 Difference]: With dead ends: 1179 [2023-12-16 15:31:34,639 INFO L226 Difference]: Without dead ends: 589 [2023-12-16 15:31:34,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 15:31:34,640 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 136 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:34,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 391 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:31:34,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2023-12-16 15:31:34,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 556. [2023-12-16 15:31:34,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 507 states have (on average 1.1459566074950691) internal successors, (581), 510 states have internal predecessors, (581), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-16 15:31:34,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 645 transitions. [2023-12-16 15:31:34,691 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 645 transitions. Word has length 82 [2023-12-16 15:31:34,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:34,692 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 645 transitions. [2023-12-16 15:31:34,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:34,692 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 645 transitions. [2023-12-16 15:31:34,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-16 15:31:34,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:34,693 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:34,699 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 15:31:34,897 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 15:31:34,897 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:34,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:34,898 INFO L85 PathProgramCache]: Analyzing trace with hash -10337099, now seen corresponding path program 1 times [2023-12-16 15:31:34,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:34,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521398803] [2023-12-16 15:31:34,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:34,898 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 15:31:34,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:34,899 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:31:34,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-16 15:31:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:35,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 15:31:35,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:35,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-16 15:31:35,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-16 15:31:35,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-16 15:31:35,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 34 [2023-12-16 15:31:35,370 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:31:35,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 53 [2023-12-16 15:31:35,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 52 [2023-12-16 15:31:35,843 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 63 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-16 15:31:35,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:31:36,056 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:31:36,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:36,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521398803] [2023-12-16 15:31:36,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521398803] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:31:36,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:31:36,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 16 [2023-12-16 15:31:36,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323639783] [2023-12-16 15:31:36,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:36,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 15:31:36,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:36,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 15:31:36,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-12-16 15:31:36,057 INFO L87 Difference]: Start difference. First operand 556 states and 645 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:36,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:36,566 INFO L93 Difference]: Finished difference Result 1155 states and 1340 transitions. [2023-12-16 15:31:36,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 15:31:36,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 83 [2023-12-16 15:31:36,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:36,570 INFO L225 Difference]: With dead ends: 1155 [2023-12-16 15:31:36,570 INFO L226 Difference]: Without dead ends: 632 [2023-12-16 15:31:36,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2023-12-16 15:31:36,571 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 73 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:36,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 414 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 15:31:36,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2023-12-16 15:31:36,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 562. [2023-12-16 15:31:36,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 513 states have (on average 1.1481481481481481) internal successors, (589), 516 states have internal predecessors, (589), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-16 15:31:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 653 transitions. [2023-12-16 15:31:36,603 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 653 transitions. Word has length 83 [2023-12-16 15:31:36,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:36,604 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 653 transitions. [2023-12-16 15:31:36,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:36,604 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 653 transitions. [2023-12-16 15:31:36,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-16 15:31:36,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:36,605 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:36,609 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 (28)] Ended with exit code 0 [2023-12-16 15:31:36,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:31:36,809 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:36,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:36,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1104038769, now seen corresponding path program 1 times [2023-12-16 15:31:36,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:36,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802029655] [2023-12-16 15:31:36,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:36,810 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 15:31:36,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:36,811 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:31:36,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-16 15:31:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:36,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 15:31:36,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:36,949 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 21 treesize of output 9 [2023-12-16 15:31:37,045 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 15:31:37,063 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 15:31:37,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:31:37,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:37,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802029655] [2023-12-16 15:31:37,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802029655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:31:37,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:31:37,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:31:37,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436639340] [2023-12-16 15:31:37,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:37,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 15:31:37,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:37,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 15:31:37,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 15:31:37,065 INFO L87 Difference]: Start difference. First operand 562 states and 653 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:37,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:37,406 INFO L93 Difference]: Finished difference Result 1113 states and 1291 transitions. [2023-12-16 15:31:37,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 15:31:37,407 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 85 [2023-12-16 15:31:37,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:37,408 INFO L225 Difference]: With dead ends: 1113 [2023-12-16 15:31:37,408 INFO L226 Difference]: Without dead ends: 584 [2023-12-16 15:31:37,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-16 15:31:37,409 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 93 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:37,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 395 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 15:31:37,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-12-16 15:31:37,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 562. [2023-12-16 15:31:37,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 513 states have (on average 1.1442495126705654) internal successors, (587), 516 states have internal predecessors, (587), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-16 15:31:37,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 651 transitions. [2023-12-16 15:31:37,437 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 651 transitions. Word has length 85 [2023-12-16 15:31:37,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:37,438 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 651 transitions. [2023-12-16 15:31:37,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:37,438 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 651 transitions. [2023-12-16 15:31:37,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-16 15:31:37,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:37,440 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:31:37,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-16 15:31:37,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:31:37,645 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:37,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:37,645 INFO L85 PathProgramCache]: Analyzing trace with hash 2124939651, now seen corresponding path program 1 times [2023-12-16 15:31:37,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:37,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051182398] [2023-12-16 15:31:37,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:37,646 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 15:31:37,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:37,646 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:31:37,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-16 15:31:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:37,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 15:31:37,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:37,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-16 15:31:37,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-16 15:31:37,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2023-12-16 15:31:37,990 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:31:37,991 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 47 treesize of output 23 [2023-12-16 15:31:38,044 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2023-12-16 15:31:38,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:31:38,044 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:38,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051182398] [2023-12-16 15:31:38,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1051182398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:31:38,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:31:38,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 15:31:38,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540246513] [2023-12-16 15:31:38,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:38,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 15:31:38,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:38,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 15:31:38,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-16 15:31:38,045 INFO L87 Difference]: Start difference. First operand 562 states and 651 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:38,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:38,373 INFO L93 Difference]: Finished difference Result 1057 states and 1230 transitions. [2023-12-16 15:31:38,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 15:31:38,374 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 154 [2023-12-16 15:31:38,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:38,377 INFO L225 Difference]: With dead ends: 1057 [2023-12-16 15:31:38,377 INFO L226 Difference]: Without dead ends: 724 [2023-12-16 15:31:38,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-12-16 15:31:38,378 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 161 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:38,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 760 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:31:38,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2023-12-16 15:31:38,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 532. [2023-12-16 15:31:38,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 483 states have (on average 1.1428571428571428) internal successors, (552), 486 states have internal predecessors, (552), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-16 15:31:38,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 616 transitions. [2023-12-16 15:31:38,407 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 616 transitions. Word has length 154 [2023-12-16 15:31:38,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:38,407 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 616 transitions. [2023-12-16 15:31:38,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:38,407 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 616 transitions. [2023-12-16 15:31:38,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-16 15:31:38,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:38,409 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:31:38,419 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 (30)] Ended with exit code 0 [2023-12-16 15:31:38,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:31:38,614 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:38,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:38,615 INFO L85 PathProgramCache]: Analyzing trace with hash -60835539, now seen corresponding path program 1 times [2023-12-16 15:31:38,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:38,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182879981] [2023-12-16 15:31:38,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:38,615 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 15:31:38,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:38,616 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:31:38,617 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 (31)] Waiting until timeout for monitored process [2023-12-16 15:31:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:38,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 15:31:38,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:38,927 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 288 proven. 18 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-12-16 15:31:38,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:31:38,987 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2023-12-16 15:31:38,988 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:38,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182879981] [2023-12-16 15:31:38,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182879981] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:31:38,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:31:38,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2023-12-16 15:31:38,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460217319] [2023-12-16 15:31:38,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:38,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:31:38,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:38,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:31:38,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-16 15:31:38,989 INFO L87 Difference]: Start difference. First operand 532 states and 616 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:39,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:39,084 INFO L93 Difference]: Finished difference Result 922 states and 1080 transitions. [2023-12-16 15:31:39,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 15:31:39,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 157 [2023-12-16 15:31:39,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:39,086 INFO L225 Difference]: With dead ends: 922 [2023-12-16 15:31:39,086 INFO L226 Difference]: Without dead ends: 619 [2023-12-16 15:31:39,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-16 15:31:39,087 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 47 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:39,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 388 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:31:39,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2023-12-16 15:31:39,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 534. [2023-12-16 15:31:39,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 485 states have (on average 1.1422680412371133) internal successors, (554), 488 states have internal predecessors, (554), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-16 15:31:39,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 618 transitions. [2023-12-16 15:31:39,116 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 618 transitions. Word has length 157 [2023-12-16 15:31:39,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:39,117 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 618 transitions. [2023-12-16 15:31:39,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:39,117 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 618 transitions. [2023-12-16 15:31:39,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-16 15:31:39,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:39,118 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:31:39,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-16 15:31:39,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:31:39,324 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:39,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:39,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1204075, now seen corresponding path program 1 times [2023-12-16 15:31:39,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:39,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445289289] [2023-12-16 15:31:39,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:39,325 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 15:31:39,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:39,326 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:31:39,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-16 15:31:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:39,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 15:31:39,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:39,530 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 15:31:39,552 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2023-12-16 15:31:39,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:31:39,553 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:39,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445289289] [2023-12-16 15:31:39,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445289289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:31:39,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:31:39,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 15:31:39,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223727759] [2023-12-16 15:31:39,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:39,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 15:31:39,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:39,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 15:31:39,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 15:31:39,554 INFO L87 Difference]: Start difference. First operand 534 states and 618 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:39,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:39,771 INFO L93 Difference]: Finished difference Result 759 states and 883 transitions. [2023-12-16 15:31:39,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 15:31:39,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 157 [2023-12-16 15:31:39,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:39,774 INFO L225 Difference]: With dead ends: 759 [2023-12-16 15:31:39,774 INFO L226 Difference]: Without dead ends: 454 [2023-12-16 15:31:39,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 154 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 15:31:39,775 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 12 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:39,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 189 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:31:39,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-12-16 15:31:39,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 454. [2023-12-16 15:31:39,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 405 states have (on average 1.125925925925926) internal successors, (456), 408 states have internal predecessors, (456), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-16 15:31:39,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 520 transitions. [2023-12-16 15:31:39,801 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 520 transitions. Word has length 157 [2023-12-16 15:31:39,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:39,801 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 520 transitions. [2023-12-16 15:31:39,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:39,801 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 520 transitions. [2023-12-16 15:31:39,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-16 15:31:39,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:39,803 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:31:39,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2023-12-16 15:31:40,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:31:40,007 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:40,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:40,007 INFO L85 PathProgramCache]: Analyzing trace with hash 220071448, now seen corresponding path program 1 times [2023-12-16 15:31:40,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:40,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726182487] [2023-12-16 15:31:40,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:40,008 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 15:31:40,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:40,009 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:31:40,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-16 15:31:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:40,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 15:31:40,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:40,349 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 15:31:40,370 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 288 proven. 18 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-12-16 15:31:40,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:31:40,477 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2023-12-16 15:31:40,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:40,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726182487] [2023-12-16 15:31:40,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726182487] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:31:40,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:31:40,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-16 15:31:40,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84020887] [2023-12-16 15:31:40,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:40,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:31:40,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:40,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:31:40,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-16 15:31:40,479 INFO L87 Difference]: Start difference. First operand 454 states and 520 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:40,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:40,550 INFO L93 Difference]: Finished difference Result 796 states and 914 transitions. [2023-12-16 15:31:40,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:31:40,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 159 [2023-12-16 15:31:40,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:40,552 INFO L225 Difference]: With dead ends: 796 [2023-12-16 15:31:40,552 INFO L226 Difference]: Without dead ends: 571 [2023-12-16 15:31:40,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-16 15:31:40,553 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 69 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:40,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 228 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:31:40,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2023-12-16 15:31:40,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 468. [2023-12-16 15:31:40,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 419 states have (on average 1.1288782816229117) internal successors, (473), 422 states have internal predecessors, (473), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-16 15:31:40,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 537 transitions. [2023-12-16 15:31:40,581 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 537 transitions. Word has length 159 [2023-12-16 15:31:40,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:40,582 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 537 transitions. [2023-12-16 15:31:40,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:40,582 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 537 transitions. [2023-12-16 15:31:40,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-16 15:31:40,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:31:40,584 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:31:40,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2023-12-16 15:31:40,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:31:40,789 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:31:40,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:31:40,789 INFO L85 PathProgramCache]: Analyzing trace with hash 921136026, now seen corresponding path program 1 times [2023-12-16 15:31:40,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:31:40,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412382052] [2023-12-16 15:31:40,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:31:40,790 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 15:31:40,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:31:40,791 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:31:40,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-16 15:31:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:31:40,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 15:31:40,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:31:41,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-16 15:31:41,039 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2023-12-16 15:31:41,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:31:41,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:31:41,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412382052] [2023-12-16 15:31:41,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1412382052] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:31:41,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:31:41,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 15:31:41,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637495835] [2023-12-16 15:31:41,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:31:41,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 15:31:41,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:31:41,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 15:31:41,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 15:31:41,042 INFO L87 Difference]: Start difference. First operand 468 states and 537 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:41,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:31:41,130 INFO L93 Difference]: Finished difference Result 697 states and 801 transitions. [2023-12-16 15:31:41,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 15:31:41,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 159 [2023-12-16 15:31:41,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:31:41,131 INFO L225 Difference]: With dead ends: 697 [2023-12-16 15:31:41,131 INFO L226 Difference]: Without dead ends: 0 [2023-12-16 15:31:41,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 157 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 15:31:41,132 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 16 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:31:41,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 186 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:31:41,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-16 15:31:41,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-16 15:31:41,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 15:31:41,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-16 15:31:41,133 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 159 [2023-12-16 15:31:41,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:31:41,133 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-16 15:31:41,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 15:31:41,133 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-16 15:31:41,133 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-16 15:31:41,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 15:31:41,140 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 (34)] Ended with exit code 0 [2023-12-16 15:31:41,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:31:41,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-16 15:32:16,849 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-23-7-10-6-9-7-9-7-9-7-9-7-9-7-9-7-9-7-9-7-9-7-8-6-7-6-6-6-2-4-2-4-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-45-7-10-6-9-7-9-7-9-7-9-7-9-7-9-7-9-7-9-7-9-6-8-6-7-6-6-6-2-4-2-4-1 context. [2023-12-16 15:32:16,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-16 15:32:16,851 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-16 15:32:16,852 INFO L158 Benchmark]: Toolchain (without parser) took 68296.22ms. Allocated memory was 199.2MB in the beginning and 694.2MB in the end (delta: 494.9MB). Free memory was 141.0MB in the beginning and 654.3MB in the end (delta: -513.3MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 15:32:16,852 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 199.2MB. Free memory is still 149.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 15:32:16,852 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.53ms. Allocated memory is still 199.2MB. Free memory was 140.7MB in the beginning and 126.2MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 15:32:16,852 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 15:32:16,852 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.70ms. Allocated memory is still 199.2MB. Free memory was 126.2MB in the beginning and 123.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 15:32:16,853 INFO L158 Benchmark]: Boogie Preprocessor took 64.29ms. Allocated memory is still 199.2MB. Free memory was 123.2MB in the beginning and 118.7MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 15:32:16,853 INFO L158 Benchmark]: RCFGBuilder took 605.82ms. Allocated memory was 199.2MB in the beginning and 333.4MB in the end (delta: 134.2MB). Free memory was 118.7MB in the beginning and 272.1MB in the end (delta: -153.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 15:32:16,853 INFO L158 Benchmark]: TraceAbstraction took 67282.58ms. Allocated memory was 333.4MB in the beginning and 694.2MB in the end (delta: 360.7MB). Free memory was 271.5MB in the beginning and 654.3MB in the end (delta: -382.8MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 15:32:16,854 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 199.2MB. Free memory is still 149.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 288.53ms. Allocated memory is still 199.2MB. Free memory was 140.7MB in the beginning and 126.2MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.70ms. Allocated memory is still 199.2MB. Free memory was 126.2MB in the beginning and 123.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 64.29ms. Allocated memory is still 199.2MB. Free memory was 123.2MB in the beginning and 118.7MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 605.82ms. Allocated memory was 199.2MB in the beginning and 333.4MB in the end (delta: 134.2MB). Free memory was 118.7MB in the beginning and 272.1MB in the end (delta: -153.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 67282.58ms. Allocated memory was 333.4MB in the beginning and 694.2MB in the end (delta: 360.7MB). Free memory was 271.5MB in the beginning and 654.3MB in the end (delta: -382.8MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-3-8-1 term,while PolyPacSimplificationTermWalker was simplifying 7 xjuncts wrt. a ∧-2-8-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown