/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-88.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 15:46:04,535 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 15:46:04,602 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 15:46:04,608 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 15:46:04,609 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 15:46:04,630 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 15:46:04,630 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 15:46:04,631 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 15:46:04,631 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 15:46:04,634 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 15:46:04,634 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 15:46:04,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 15:46:04,635 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 15:46:04,636 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 15:46:04,636 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 15:46:04,636 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 15:46:04,637 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 15:46:04,637 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 15:46:04,637 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 15:46:04,637 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 15:46:04,638 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 15:46:04,638 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 15:46:04,639 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 15:46:04,639 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 15:46:04,639 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 15:46:04,639 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 15:46:04,639 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 15:46:04,639 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 15:46:04,639 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 15:46:04,640 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 15:46:04,640 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 15:46:04,640 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 15:46:04,640 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 15:46:04,641 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 15:46:04,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 15:46:04,641 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 15:46:04,641 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 15:46:04,641 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 15:46:04,641 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 15:46:04,641 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 15:46:04,641 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 15:46:04,642 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 15:46:04,642 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 15:46:04,642 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 15:46:04,643 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 15:46:04,643 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 15:46:04,643 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 15:46:04,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 15:46:04,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 15:46:04,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 15:46:04,846 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 15:46:04,846 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 15:46:04,847 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-88.i [2023-12-24 15:46:05,949 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 15:46:06,151 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 15:46:06,151 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-88.i [2023-12-24 15:46:06,159 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad400a367/ba4560bf467b41cfa3c65c28c342189d/FLAGa8e351024 [2023-12-24 15:46:06,170 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad400a367/ba4560bf467b41cfa3c65c28c342189d [2023-12-24 15:46:06,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 15:46:06,173 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 15:46:06,174 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 15:46:06,174 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 15:46:06,178 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 15:46:06,179 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 03:46:06" (1/1) ... [2023-12-24 15:46:06,180 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc46429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:46:06, skipping insertion in model container [2023-12-24 15:46:06,180 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 03:46:06" (1/1) ... [2023-12-24 15:46:06,208 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 15:46:06,322 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-88.i[917,930] [2023-12-24 15:46:06,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 15:46:06,402 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 15:46:06,416 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-88.i[917,930] [2023-12-24 15:46:06,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 15:46:06,491 INFO L206 MainTranslator]: Completed translation [2023-12-24 15:46:06,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:46:06 WrapperNode [2023-12-24 15:46:06,492 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 15:46:06,493 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 15:46:06,493 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 15:46:06,493 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 15:46:06,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:46:06" (1/1) ... [2023-12-24 15:46:06,517 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:46:06" (1/1) ... [2023-12-24 15:46:06,541 INFO L138 Inliner]: procedures = 36, calls = 169, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 527 [2023-12-24 15:46:06,542 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 15:46:06,542 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 15:46:06,543 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 15:46:06,543 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 15:46:06,550 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:46:06" (1/1) ... [2023-12-24 15:46:06,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:46:06" (1/1) ... [2023-12-24 15:46:06,555 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:46:06" (1/1) ... [2023-12-24 15:46:06,579 INFO L175 MemorySlicer]: Split 134 memory accesses to 8 slices as follows [2, 16, 11, 54, 3, 4, 10, 34]. 40 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 2, 2, 4, 1, 1, 2, 4]. The 19 writes are split as follows [0, 2, 2, 6, 1, 1, 2, 5]. [2023-12-24 15:46:06,582 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:46:06" (1/1) ... [2023-12-24 15:46:06,582 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:46:06" (1/1) ... [2023-12-24 15:46:06,605 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:46:06" (1/1) ... [2023-12-24 15:46:06,616 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:46:06" (1/1) ... [2023-12-24 15:46:06,619 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:46:06" (1/1) ... [2023-12-24 15:46:06,621 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:46:06" (1/1) ... [2023-12-24 15:46:06,626 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 15:46:06,627 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 15:46:06,627 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 15:46:06,627 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 15:46:06,627 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:46:06" (1/1) ... [2023-12-24 15:46:06,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 15:46:06,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 15:46:06,663 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 15:46:06,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 15:46:06,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 15:46:06,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 15:46:06,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 15:46:06,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 15:46:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 15:46:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 15:46:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 15:46:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-24 15:46:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#7 [2023-12-24 15:46:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 15:46:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 15:46:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 15:46:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 15:46:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 15:46:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-24 15:46:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#6 [2023-12-24 15:46:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#7 [2023-12-24 15:46:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 15:46:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 15:46:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 15:46:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 15:46:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 15:46:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 15:46:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-24 15:46:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2023-12-24 15:46:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 15:46:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 15:46:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-24 15:46:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-24 15:46:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-24 15:46:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-24 15:46:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2023-12-24 15:46:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#7 [2023-12-24 15:46:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 15:46:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 15:46:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2023-12-24 15:46:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2023-12-24 15:46:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2023-12-24 15:46:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#5 [2023-12-24 15:46:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#6 [2023-12-24 15:46:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#7 [2023-12-24 15:46:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 15:46:06,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 15:46:06,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 15:46:06,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 15:46:06,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-24 15:46:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-24 15:46:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-12-24 15:46:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2023-12-24 15:46:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 15:46:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 15:46:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 15:46:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 15:46:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 15:46:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-24 15:46:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#6 [2023-12-24 15:46:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#7 [2023-12-24 15:46:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 15:46:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 15:46:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2023-12-24 15:46:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2023-12-24 15:46:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2023-12-24 15:46:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#5 [2023-12-24 15:46:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#6 [2023-12-24 15:46:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#7 [2023-12-24 15:46:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 15:46:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 15:46:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2023-12-24 15:46:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2023-12-24 15:46:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2023-12-24 15:46:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#5 [2023-12-24 15:46:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#6 [2023-12-24 15:46:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#7 [2023-12-24 15:46:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 15:46:06,695 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 15:46:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 15:46:06,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 15:46:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 15:46:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 15:46:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 15:46:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 15:46:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 15:46:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 15:46:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-24 15:46:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#7 [2023-12-24 15:46:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 15:46:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 15:46:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 15:46:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 15:46:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 15:46:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-24 15:46:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#6 [2023-12-24 15:46:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#7 [2023-12-24 15:46:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 15:46:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 15:46:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 15:46:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 15:46:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-24 15:46:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-24 15:46:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-12-24 15:46:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#7 [2023-12-24 15:46:06,839 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 15:46:06,840 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 15:46:07,276 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 15:46:07,324 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 15:46:07,324 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 15:46:07,325 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 03:46:07 BoogieIcfgContainer [2023-12-24 15:46:07,325 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 15:46:07,327 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 15:46:07,327 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 15:46:07,329 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 15:46:07,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 03:46:06" (1/3) ... [2023-12-24 15:46:07,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dae7844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 03:46:07, skipping insertion in model container [2023-12-24 15:46:07,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:46:06" (2/3) ... [2023-12-24 15:46:07,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dae7844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 03:46:07, skipping insertion in model container [2023-12-24 15:46:07,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 03:46:07" (3/3) ... [2023-12-24 15:46:07,332 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-88.i [2023-12-24 15:46:07,344 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 15:46:07,345 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 15:46:07,385 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 15:46:07,391 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;@2645d4aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 15:46:07,392 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 15:46:07,399 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 84 states have (on average 1.4523809523809523) internal successors, (122), 85 states have internal predecessors, (122), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 15:46:07,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-24 15:46:07,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:46:07,410 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:46:07,411 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:46:07,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:46:07,414 INFO L85 PathProgramCache]: Analyzing trace with hash -566636852, now seen corresponding path program 1 times [2023-12-24 15:46:07,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:46:07,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954098277] [2023-12-24 15:46:07,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:46:07,424 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:07,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:46:07,428 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:46:07,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 15:46:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:46:07,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 15:46:07,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:46:07,729 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-12-24 15:46:07,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:46:07,730 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:46:07,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954098277] [2023-12-24 15:46:07,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954098277] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:46:07,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:46:07,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 15:46:07,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867151335] [2023-12-24 15:46:07,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:46:07,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 15:46:07,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:46:07,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 15:46:07,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 15:46:07,762 INFO L87 Difference]: Start difference. First operand has 104 states, 84 states have (on average 1.4523809523809523) internal successors, (122), 85 states have internal predecessors, (122), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 15:46:07,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:46:07,817 INFO L93 Difference]: Finished difference Result 205 states and 327 transitions. [2023-12-24 15:46:07,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 15:46:07,819 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 134 [2023-12-24 15:46:07,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:46:07,825 INFO L225 Difference]: With dead ends: 205 [2023-12-24 15:46:07,825 INFO L226 Difference]: Without dead ends: 102 [2023-12-24 15:46:07,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 15:46:07,830 INFO L413 NwaCegarLoop]: 147 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, 147 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:46:07,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 147 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:46:07,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-24 15:46:07,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-12-24 15:46:07,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 83 states have (on average 1.4096385542168675) internal successors, (117), 83 states have internal predecessors, (117), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 15:46:07,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 151 transitions. [2023-12-24 15:46:07,859 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 151 transitions. Word has length 134 [2023-12-24 15:46:07,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:46:07,860 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 151 transitions. [2023-12-24 15:46:07,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 15:46:07,860 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 151 transitions. [2023-12-24 15:46:07,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-24 15:46:07,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:46:07,862 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:46:07,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 15:46:08,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:08,070 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:46:08,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:46:08,071 INFO L85 PathProgramCache]: Analyzing trace with hash 97642590, now seen corresponding path program 1 times [2023-12-24 15:46:08,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:46:08,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442108157] [2023-12-24 15:46:08,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:46:08,072 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:08,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:46:08,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:46:08,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 15:46:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:46:08,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 15:46:08,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:46:08,380 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:46:08,380 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:46:08,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:46:08,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442108157] [2023-12-24 15:46:08,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442108157] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:46:08,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:46:08,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 15:46:08,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066272902] [2023-12-24 15:46:08,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:46:08,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 15:46:08,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:46:08,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 15:46:08,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 15:46:08,388 INFO L87 Difference]: Start difference. First operand 102 states and 151 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:46:08,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:46:08,522 INFO L93 Difference]: Finished difference Result 235 states and 347 transitions. [2023-12-24 15:46:08,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 15:46:08,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-24 15:46:08,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:46:08,529 INFO L225 Difference]: With dead ends: 235 [2023-12-24 15:46:08,529 INFO L226 Difference]: Without dead ends: 134 [2023-12-24 15:46:08,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-24 15:46:08,532 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 83 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:46:08,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 696 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:46:08,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-12-24 15:46:08,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 108. [2023-12-24 15:46:08,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 89 states have (on average 1.3820224719101124) internal successors, (123), 89 states have internal predecessors, (123), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 15:46:08,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 157 transitions. [2023-12-24 15:46:08,548 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 157 transitions. Word has length 134 [2023-12-24 15:46:08,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:46:08,549 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 157 transitions. [2023-12-24 15:46:08,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:46:08,549 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 157 transitions. [2023-12-24 15:46:08,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-24 15:46:08,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:46:08,551 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:46:08,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 15:46:08,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:08,754 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:46:08,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:46:08,759 INFO L85 PathProgramCache]: Analyzing trace with hash -711704036, now seen corresponding path program 1 times [2023-12-24 15:46:08,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:46:08,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586844446] [2023-12-24 15:46:08,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:46:08,760 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:08,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:46:08,761 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:46:08,816 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 (4)] Waiting until timeout for monitored process [2023-12-24 15:46:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:46:09,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 15:46:09,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:46:09,097 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:46:09,097 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:46:09,097 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:46:09,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586844446] [2023-12-24 15:46:09,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [586844446] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:46:09,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:46:09,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 15:46:09,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429414002] [2023-12-24 15:46:09,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:46:09,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 15:46:09,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:46:09,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 15:46:09,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-24 15:46:09,102 INFO L87 Difference]: Start difference. First operand 108 states and 157 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:46:09,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:46:09,301 INFO L93 Difference]: Finished difference Result 245 states and 352 transitions. [2023-12-24 15:46:09,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 15:46:09,302 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-24 15:46:09,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:46:09,304 INFO L225 Difference]: With dead ends: 245 [2023-12-24 15:46:09,304 INFO L226 Difference]: Without dead ends: 138 [2023-12-24 15:46:09,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2023-12-24 15:46:09,307 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 72 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:46:09,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 949 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:46:09,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-12-24 15:46:09,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 112. [2023-12-24 15:46:09,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 93 states have (on average 1.3655913978494623) internal successors, (127), 93 states have internal predecessors, (127), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 15:46:09,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 161 transitions. [2023-12-24 15:46:09,336 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 161 transitions. Word has length 134 [2023-12-24 15:46:09,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:46:09,337 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 161 transitions. [2023-12-24 15:46:09,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:46:09,337 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 161 transitions. [2023-12-24 15:46:09,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-24 15:46:09,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:46:09,339 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:46:09,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 15:46:09,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:09,540 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:46:09,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:46:09,540 INFO L85 PathProgramCache]: Analyzing trace with hash -711644454, now seen corresponding path program 1 times [2023-12-24 15:46:09,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:46:09,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116771529] [2023-12-24 15:46:09,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:46:09,541 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:09,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:46:09,542 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:46:09,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 15:46:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:46:09,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 15:46:09,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:46:10,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 15:46:10,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 15:46:11,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 15:46:11,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 15:46:11,682 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 27 treesize of output 11 [2023-12-24 15:46:11,937 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 27 treesize of output 11 [2023-12-24 15:46:12,119 INFO L349 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2023-12-24 15:46:12,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 36 [2023-12-24 15:46:12,234 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:46:12,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 15:46:12,238 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 [2023-12-24 15:46:12,267 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 57 proven. 350 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-12-24 15:46:12,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:46:12,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:46:12,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116771529] [2023-12-24 15:46:12,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116771529] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:46:12,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [892421279] [2023-12-24 15:46:12,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:46:12,458 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:46:12,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:46:12,493 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:46:12,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-24 15:46:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:46:13,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 15:46:13,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:46:14,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 15:46:14,454 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 21 treesize of output 20 [2023-12-24 15:46:15,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:46:15,685 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 [2023-12-24 15:46:16,015 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 [2023-12-24 15:46:16,362 INFO L349 Elim1Store]: treesize reduction 43, result has 25.9 percent of original size [2023-12-24 15:46:16,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 47 [2023-12-24 15:46:16,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2023-12-24 15:46:16,460 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 [2023-12-24 15:46:16,464 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 57 proven. 350 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-12-24 15:46:16,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:46:16,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [892421279] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:46:16,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:46:16,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-24 15:46:16,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800720653] [2023-12-24 15:46:16,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:46:16,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-24 15:46:16,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:46:16,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-24 15:46:16,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2023-12-24 15:46:16,494 INFO L87 Difference]: Start difference. First operand 112 states and 161 transitions. Second operand has 19 states, 17 states have (on average 6.235294117647059) internal successors, (106), 18 states have internal predecessors, (106), 10 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (34), 8 states have call predecessors, (34), 10 states have call successors, (34) [2023-12-24 15:46:18,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:46:18,373 INFO L93 Difference]: Finished difference Result 374 states and 533 transitions. [2023-12-24 15:46:18,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 15:46:18,374 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 6.235294117647059) internal successors, (106), 18 states have internal predecessors, (106), 10 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (34), 8 states have call predecessors, (34), 10 states have call successors, (34) Word has length 134 [2023-12-24 15:46:18,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:46:18,375 INFO L225 Difference]: With dead ends: 374 [2023-12-24 15:46:18,375 INFO L226 Difference]: Without dead ends: 263 [2023-12-24 15:46:18,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=297, Invalid=963, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 15:46:18,377 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 500 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 15:46:18,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 878 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 15:46:18,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-12-24 15:46:18,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 254. [2023-12-24 15:46:18,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 204 states have (on average 1.338235294117647) internal successors, (273), 205 states have internal predecessors, (273), 45 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-24 15:46:18,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 363 transitions. [2023-12-24 15:46:18,422 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 363 transitions. Word has length 134 [2023-12-24 15:46:18,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:46:18,423 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 363 transitions. [2023-12-24 15:46:18,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 6.235294117647059) internal successors, (106), 18 states have internal predecessors, (106), 10 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (34), 8 states have call predecessors, (34), 10 states have call successors, (34) [2023-12-24 15:46:18,423 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 363 transitions. [2023-12-24 15:46:18,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-24 15:46:18,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:46:18,425 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:46:18,444 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 [2023-12-24 15:46:18,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2023-12-24 15:46:18,840 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=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:46:18,841 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:46:18,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:46:18,841 INFO L85 PathProgramCache]: Analyzing trace with hash 911797439, now seen corresponding path program 1 times [2023-12-24 15:46:18,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:46:18,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500270117] [2023-12-24 15:46:18,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:46:18,842 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:18,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:46:18,864 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:46:18,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 15:46:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:46:19,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 15:46:19,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:46:19,783 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 21 treesize of output 20 [2023-12-24 15:46:20,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2023-12-24 15:46:21,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 43 [2023-12-24 15:46:21,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:46:21,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 50 [2023-12-24 15:46:21,690 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 40 proven. 280 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-24 15:46:21,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:46:21,877 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:46:21,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:46:21,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1500270117] [2023-12-24 15:46:21,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1500270117] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:46:21,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:46:21,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-24 15:46:21,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379628114] [2023-12-24 15:46:21,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:46:21,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 15:46:21,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:46:21,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 15:46:21,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-24 15:46:21,880 INFO L87 Difference]: Start difference. First operand 254 states and 363 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:46:22,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:46:22,276 INFO L93 Difference]: Finished difference Result 635 states and 897 transitions. [2023-12-24 15:46:22,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 15:46:22,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 136 [2023-12-24 15:46:22,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:46:22,279 INFO L225 Difference]: With dead ends: 635 [2023-12-24 15:46:22,279 INFO L226 Difference]: Without dead ends: 413 [2023-12-24 15:46:22,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-12-24 15:46:22,280 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 461 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 15:46:22,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 697 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 15:46:22,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2023-12-24 15:46:22,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 342. [2023-12-24 15:46:22,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 284 states have (on average 1.341549295774648) internal successors, (381), 286 states have internal predecessors, (381), 50 states have call successors, (50), 7 states have call predecessors, (50), 7 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-24 15:46:22,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2023-12-24 15:46:22,312 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 136 [2023-12-24 15:46:22,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:46:22,312 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2023-12-24 15:46:22,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:46:22,312 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2023-12-24 15:46:22,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-24 15:46:22,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:46:22,314 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:46:22,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 15:46:22,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:22,522 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:46:22,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:46:22,523 INFO L85 PathProgramCache]: Analyzing trace with hash 2020223041, now seen corresponding path program 1 times [2023-12-24 15:46:22,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:46:22,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652739452] [2023-12-24 15:46:22,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:46:22,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:22,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:46:22,525 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:46:22,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 15:46:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:46:22,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 15:46:22,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:46:23,008 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 13 proven. 207 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 15:46:23,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:46:23,069 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:46:23,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:46:23,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652739452] [2023-12-24 15:46:23,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652739452] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:46:23,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:46:23,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2023-12-24 15:46:23,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298541660] [2023-12-24 15:46:23,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:46:23,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:46:23,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:46:23,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:46:23,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-24 15:46:23,071 INFO L87 Difference]: Start difference. First operand 342 states and 481 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:46:23,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:46:23,146 INFO L93 Difference]: Finished difference Result 659 states and 931 transitions. [2023-12-24 15:46:23,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:46:23,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 136 [2023-12-24 15:46:23,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:46:23,154 INFO L225 Difference]: With dead ends: 659 [2023-12-24 15:46:23,154 INFO L226 Difference]: Without dead ends: 470 [2023-12-24 15:46:23,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 15:46:23,155 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 75 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:46:23,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 577 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:46:23,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2023-12-24 15:46:23,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 348. [2023-12-24 15:46:23,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 290 states have (on average 1.3413793103448275) internal successors, (389), 292 states have internal predecessors, (389), 50 states have call successors, (50), 7 states have call predecessors, (50), 7 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-24 15:46:23,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 489 transitions. [2023-12-24 15:46:23,172 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 489 transitions. Word has length 136 [2023-12-24 15:46:23,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:46:23,173 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 489 transitions. [2023-12-24 15:46:23,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:46:23,173 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 489 transitions. [2023-12-24 15:46:23,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-24 15:46:23,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:46:23,174 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:46:23,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 15:46:23,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:23,380 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:46:23,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:46:23,381 INFO L85 PathProgramCache]: Analyzing trace with hash -888540861, now seen corresponding path program 1 times [2023-12-24 15:46:23,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:46:23,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366780477] [2023-12-24 15:46:23,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:46:23,381 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:23,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:46:23,383 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:46:23,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 15:46:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:46:23,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 15:46:23,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:46:23,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 15:46:23,687 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:46:23,687 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:46:23,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:46:23,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366780477] [2023-12-24 15:46:23,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366780477] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:46:23,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:46:23,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 15:46:23,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14879677] [2023-12-24 15:46:23,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:46:23,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:46:23,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:46:23,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:46:23,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:46:23,689 INFO L87 Difference]: Start difference. First operand 348 states and 489 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:46:23,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:46:23,797 INFO L93 Difference]: Finished difference Result 811 states and 1139 transitions. [2023-12-24 15:46:23,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:46:23,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 136 [2023-12-24 15:46:23,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:46:23,800 INFO L225 Difference]: With dead ends: 811 [2023-12-24 15:46:23,800 INFO L226 Difference]: Without dead ends: 499 [2023-12-24 15:46:23,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:46:23,801 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 140 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:46:23,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 575 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:46:23,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2023-12-24 15:46:23,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 370. [2023-12-24 15:46:23,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 304 states have (on average 1.325657894736842) internal successors, (403), 305 states have internal predecessors, (403), 56 states have call successors, (56), 9 states have call predecessors, (56), 9 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 15:46:23,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 515 transitions. [2023-12-24 15:46:23,821 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 515 transitions. Word has length 136 [2023-12-24 15:46:23,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:46:23,821 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 515 transitions. [2023-12-24 15:46:23,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:46:23,821 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 515 transitions. [2023-12-24 15:46:23,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-24 15:46:23,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:46:23,822 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:46:23,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 15:46:24,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:24,042 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:46:24,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:46:24,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1909642765, now seen corresponding path program 1 times [2023-12-24 15:46:24,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:46:24,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837864705] [2023-12-24 15:46:24,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:46:24,043 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:24,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:46:24,044 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:46:24,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 15:46:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:46:24,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 15:46:24,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:46:24,255 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:46:24,255 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:46:24,256 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:46:24,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837864705] [2023-12-24 15:46:24,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837864705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:46:24,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:46:24,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:46:24,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122183435] [2023-12-24 15:46:24,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:46:24,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:46:24,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:46:24,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:46:24,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:46:24,258 INFO L87 Difference]: Start difference. First operand 370 states and 515 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:46:24,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:46:24,317 INFO L93 Difference]: Finished difference Result 769 states and 1076 transitions. [2023-12-24 15:46:24,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:46:24,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 138 [2023-12-24 15:46:24,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:46:24,325 INFO L225 Difference]: With dead ends: 769 [2023-12-24 15:46:24,325 INFO L226 Difference]: Without dead ends: 457 [2023-12-24 15:46:24,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:46:24,326 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 89 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 568 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 [2023-12-24 15:46:24,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 568 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:46:24,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-12-24 15:46:24,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 379. [2023-12-24 15:46:24,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 313 states have (on average 1.31629392971246) internal successors, (412), 314 states have internal predecessors, (412), 56 states have call successors, (56), 9 states have call predecessors, (56), 9 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 15:46:24,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 524 transitions. [2023-12-24 15:46:24,346 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 524 transitions. Word has length 138 [2023-12-24 15:46:24,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:46:24,346 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 524 transitions. [2023-12-24 15:46:24,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:46:24,347 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 524 transitions. [2023-12-24 15:46:24,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-24 15:46:24,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:46:24,348 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:46:24,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 15:46:24,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:24,553 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:46:24,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:46:24,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1752514857, now seen corresponding path program 1 times [2023-12-24 15:46:24,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:46:24,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1978413104] [2023-12-24 15:46:24,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:46:24,555 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:24,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:46:24,556 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:46:24,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 15:46:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:46:24,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 15:46:24,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:46:25,074 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 13 proven. 207 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 15:46:25,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:46:25,154 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:46:25,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:46:25,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1978413104] [2023-12-24 15:46:25,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1978413104] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:46:25,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:46:25,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2023-12-24 15:46:25,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603963061] [2023-12-24 15:46:25,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:46:25,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:46:25,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:46:25,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:46:25,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-24 15:46:25,156 INFO L87 Difference]: Start difference. First operand 379 states and 524 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:46:25,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:46:25,247 INFO L93 Difference]: Finished difference Result 1128 states and 1561 transitions. [2023-12-24 15:46:25,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:46:25,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 138 [2023-12-24 15:46:25,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:46:25,250 INFO L225 Difference]: With dead ends: 1128 [2023-12-24 15:46:25,250 INFO L226 Difference]: Without dead ends: 807 [2023-12-24 15:46:25,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-24 15:46:25,251 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 190 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:46:25,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 621 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:46:25,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2023-12-24 15:46:25,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 427. [2023-12-24 15:46:25,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 361 states have (on average 1.3379501385041552) internal successors, (483), 362 states have internal predecessors, (483), 56 states have call successors, (56), 9 states have call predecessors, (56), 9 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 15:46:25,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 595 transitions. [2023-12-24 15:46:25,272 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 595 transitions. Word has length 138 [2023-12-24 15:46:25,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:46:25,272 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 595 transitions. [2023-12-24 15:46:25,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:46:25,272 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 595 transitions. [2023-12-24 15:46:25,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-24 15:46:25,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:46:25,273 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:46:25,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-24 15:46:25,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:25,479 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:46:25,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:46:25,479 INFO L85 PathProgramCache]: Analyzing trace with hash 164166955, now seen corresponding path program 1 times [2023-12-24 15:46:25,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:46:25,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646965565] [2023-12-24 15:46:25,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:46:25,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:25,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:46:25,482 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:46:25,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 15:46:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:46:25,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 15:46:25,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:46:25,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 15:46:25,816 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:46:25,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:46:25,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:46:25,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646965565] [2023-12-24 15:46:25,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646965565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:46:25,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:46:25,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 15:46:25,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551603330] [2023-12-24 15:46:25,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:46:25,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:46:25,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:46:25,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:46:25,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:46:25,818 INFO L87 Difference]: Start difference. First operand 427 states and 595 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:46:25,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:46:25,930 INFO L93 Difference]: Finished difference Result 1097 states and 1528 transitions. [2023-12-24 15:46:25,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:46:25,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 138 [2023-12-24 15:46:25,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:46:25,933 INFO L225 Difference]: With dead ends: 1097 [2023-12-24 15:46:25,933 INFO L226 Difference]: Without dead ends: 728 [2023-12-24 15:46:25,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:46:25,934 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 227 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:46:25,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 671 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:46:25,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2023-12-24 15:46:25,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 475. [2023-12-24 15:46:25,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 409 states have (on average 1.3496332518337408) internal successors, (552), 410 states have internal predecessors, (552), 56 states have call successors, (56), 9 states have call predecessors, (56), 9 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 15:46:25,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 664 transitions. [2023-12-24 15:46:25,956 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 664 transitions. Word has length 138 [2023-12-24 15:46:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:46:25,956 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 664 transitions. [2023-12-24 15:46:25,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:46:25,957 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 664 transitions. [2023-12-24 15:46:25,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-24 15:46:25,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:46:25,958 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:46:25,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 15:46:26,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:26,164 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:46:26,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:46:26,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1953631587, now seen corresponding path program 1 times [2023-12-24 15:46:26,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:46:26,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598709151] [2023-12-24 15:46:26,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:46:26,165 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:26,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:46:26,166 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:46:26,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 15:46:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:46:26,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 15:46:26,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:46:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 13 proven. 207 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 15:46:26,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:46:26,803 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:46:26,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:46:26,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598709151] [2023-12-24 15:46:26,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598709151] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:46:26,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:46:26,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2023-12-24 15:46:26,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283213422] [2023-12-24 15:46:26,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:46:26,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:46:26,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:46:26,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:46:26,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-24 15:46:26,804 INFO L87 Difference]: Start difference. First operand 475 states and 664 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:46:26,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:46:26,883 INFO L93 Difference]: Finished difference Result 1076 states and 1502 transitions. [2023-12-24 15:46:26,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:46:26,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-12-24 15:46:26,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:46:26,886 INFO L225 Difference]: With dead ends: 1076 [2023-12-24 15:46:26,886 INFO L226 Difference]: Without dead ends: 707 [2023-12-24 15:46:26,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 15:46:26,887 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 198 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:46:26,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 456 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:46:26,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2023-12-24 15:46:26,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 504. [2023-12-24 15:46:26,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 438 states have (on average 1.356164383561644) internal successors, (594), 439 states have internal predecessors, (594), 56 states have call successors, (56), 9 states have call predecessors, (56), 9 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 15:46:26,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 706 transitions. [2023-12-24 15:46:26,925 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 706 transitions. Word has length 139 [2023-12-24 15:46:26,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:46:26,925 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 706 transitions. [2023-12-24 15:46:26,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:46:26,925 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 706 transitions. [2023-12-24 15:46:26,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 15:46:26,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:46:26,926 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:46:26,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-24 15:46:27,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:27,132 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:46:27,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:46:27,132 INFO L85 PathProgramCache]: Analyzing trace with hash 961998920, now seen corresponding path program 1 times [2023-12-24 15:46:27,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:46:27,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508604817] [2023-12-24 15:46:27,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:46:27,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:27,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:46:27,134 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:46:27,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 15:46:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:46:27,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 15:46:27,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:46:27,608 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 13 proven. 207 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 15:46:27,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:46:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:46:27,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:46:27,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508604817] [2023-12-24 15:46:27,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508604817] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:46:27,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:46:27,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2023-12-24 15:46:27,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494947463] [2023-12-24 15:46:27,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:46:27,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:46:27,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:46:27,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:46:27,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-24 15:46:27,697 INFO L87 Difference]: Start difference. First operand 504 states and 706 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:46:27,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:46:27,775 INFO L93 Difference]: Finished difference Result 1054 states and 1474 transitions. [2023-12-24 15:46:27,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:46:27,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 140 [2023-12-24 15:46:27,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:46:27,780 INFO L225 Difference]: With dead ends: 1054 [2023-12-24 15:46:27,780 INFO L226 Difference]: Without dead ends: 656 [2023-12-24 15:46:27,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 15:46:27,781 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 165 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:46:27,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 424 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:46:27,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2023-12-24 15:46:27,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 512. [2023-12-24 15:46:27,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 446 states have (on average 1.3497757847533631) internal successors, (602), 447 states have internal predecessors, (602), 56 states have call successors, (56), 9 states have call predecessors, (56), 9 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 15:46:27,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 714 transitions. [2023-12-24 15:46:27,802 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 714 transitions. Word has length 140 [2023-12-24 15:46:27,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:46:27,802 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 714 transitions. [2023-12-24 15:46:27,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:46:27,803 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 714 transitions. [2023-12-24 15:46:27,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-24 15:46:27,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:46:27,803 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:46:27,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-24 15:46:28,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:28,009 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:46:28,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:46:28,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1916540099, now seen corresponding path program 1 times [2023-12-24 15:46:28,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:46:28,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941504064] [2023-12-24 15:46:28,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:46:28,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:46:28,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:46:28,013 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:46:28,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-24 15:46:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:46:28,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 15:46:28,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:46:29,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:46:29,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 15:46:30,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 38 [2023-12-24 15:46:31,278 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 155 proven. 64 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-24 15:46:31,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:46:38,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:46:38,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941504064] [2023-12-24 15:46:38,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941504064] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:46:38,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [135819381] [2023-12-24 15:46:38,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:46:38,880 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:46:38,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:46:38,881 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:46:38,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-24 15:46:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:46:39,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-24 15:46:39,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:46:41,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:46:41,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 15:46:42,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 38 [2023-12-24 15:46:43,359 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 155 proven. 64 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-24 15:46:43,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:46:56,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [135819381] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:46:56,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:46:56,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 42 [2023-12-24 15:46:56,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745676138] [2023-12-24 15:46:56,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:46:56,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-24 15:46:56,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:46:56,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-24 15:46:56,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=652, Invalid=2318, Unknown=0, NotChecked=0, Total=2970 [2023-12-24 15:46:56,582 INFO L87 Difference]: Start difference. First operand 512 states and 714 transitions. Second operand has 43 states, 35 states have (on average 3.7142857142857144) internal successors, (130), 34 states have internal predecessors, (130), 10 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (34), 10 states have call predecessors, (34), 10 states have call successors, (34) [2023-12-24 15:46:59,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:46:59,916 INFO L93 Difference]: Finished difference Result 1310 states and 1782 transitions. [2023-12-24 15:46:59,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-24 15:46:59,917 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 35 states have (on average 3.7142857142857144) internal successors, (130), 34 states have internal predecessors, (130), 10 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (34), 10 states have call predecessors, (34), 10 states have call successors, (34) Word has length 141 [2023-12-24 15:46:59,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:46:59,920 INFO L225 Difference]: With dead ends: 1310 [2023-12-24 15:46:59,920 INFO L226 Difference]: Without dead ends: 904 [2023-12-24 15:46:59,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 322 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2157 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=1398, Invalid=4764, Unknown=0, NotChecked=0, Total=6162 [2023-12-24 15:46:59,923 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 1138 mSDsluCounter, 2286 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 2433 SdHoareTripleChecker+Invalid, 1862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-24 15:46:59,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 2433 Invalid, 1862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-24 15:46:59,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2023-12-24 15:46:59,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 658. [2023-12-24 15:46:59,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 582 states have (on average 1.3333333333333333) internal successors, (776), 583 states have internal predecessors, (776), 56 states have call successors, (56), 19 states have call predecessors, (56), 19 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 15:46:59,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 888 transitions. [2023-12-24 15:46:59,985 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 888 transitions. Word has length 141 [2023-12-24 15:46:59,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:46:59,985 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 888 transitions. [2023-12-24 15:46:59,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 35 states have (on average 3.7142857142857144) internal successors, (130), 34 states have internal predecessors, (130), 10 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (34), 10 states have call predecessors, (34), 10 states have call successors, (34) [2023-12-24 15:46:59,986 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 888 transitions. [2023-12-24 15:46:59,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-24 15:46:59,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:46:59,987 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:46:59,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2023-12-24 15:47:00,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-24 15:47:00,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:00,401 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:47:00,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:47:00,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1881576581, now seen corresponding path program 1 times [2023-12-24 15:47:00,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:47:00,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965863976] [2023-12-24 15:47:00,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:47:00,402 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:00,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:47:00,403 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:47:00,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-24 15:47:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:47:00,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 15:47:00,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:47:00,882 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 [2023-12-24 15:47:00,902 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 13 proven. 207 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 15:47:00,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:47:00,987 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:47:00,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:47:00,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965863976] [2023-12-24 15:47:00,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965863976] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:47:00,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:47:00,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-24 15:47:00,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936486470] [2023-12-24 15:47:00,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:47:00,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:47:00,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:47:00,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:47:00,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-24 15:47:00,989 INFO L87 Difference]: Start difference. First operand 658 states and 888 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:47:01,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:47:01,094 INFO L93 Difference]: Finished difference Result 1230 states and 1666 transitions. [2023-12-24 15:47:01,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:47:01,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 141 [2023-12-24 15:47:01,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:47:01,096 INFO L225 Difference]: With dead ends: 1230 [2023-12-24 15:47:01,096 INFO L226 Difference]: Without dead ends: 681 [2023-12-24 15:47:01,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-24 15:47:01,097 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 160 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:47:01,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 501 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:47:01,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2023-12-24 15:47:01,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 605. [2023-12-24 15:47:01,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 529 states have (on average 1.3194706994328922) internal successors, (698), 530 states have internal predecessors, (698), 56 states have call successors, (56), 19 states have call predecessors, (56), 19 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 15:47:01,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 810 transitions. [2023-12-24 15:47:01,142 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 810 transitions. Word has length 141 [2023-12-24 15:47:01,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:47:01,142 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 810 transitions. [2023-12-24 15:47:01,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:47:01,142 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 810 transitions. [2023-12-24 15:47:01,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-24 15:47:01,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:47:01,143 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:47:01,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-24 15:47:01,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:01,349 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:47:01,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:47:01,349 INFO L85 PathProgramCache]: Analyzing trace with hash -483039047, now seen corresponding path program 1 times [2023-12-24 15:47:01,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:47:01,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595265272] [2023-12-24 15:47:01,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:47:01,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:01,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:47:01,350 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:47:01,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-24 15:47:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:47:01,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 15:47:01,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:47:02,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:47:03,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2023-12-24 15:47:03,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2023-12-24 15:47:03,391 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:47:03,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 40 [2023-12-24 15:47:03,432 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 15:47:03,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:47:04,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:47:04,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595265272] [2023-12-24 15:47:04,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595265272] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:47:04,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2058404410] [2023-12-24 15:47:04,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:47:04,076 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:47:04,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:47:04,077 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:47:04,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-12-24 15:47:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:47:04,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 15:47:04,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:47:05,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:47:06,405 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 26 treesize of output 21 [2023-12-24 15:47:06,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2023-12-24 15:47:06,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 40 [2023-12-24 15:47:06,695 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 15:47:06,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:47:06,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2058404410] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:47:06,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:47:06,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2023-12-24 15:47:06,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506506331] [2023-12-24 15:47:06,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:47:06,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 15:47:06,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:47:06,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 15:47:06,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-12-24 15:47:06,788 INFO L87 Difference]: Start difference. First operand 605 states and 810 transitions. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 12 states have internal predecessors, (108), 4 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2023-12-24 15:47:08,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:47:08,283 INFO L93 Difference]: Finished difference Result 1277 states and 1716 transitions. [2023-12-24 15:47:08,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 15:47:08,288 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 12 states have internal predecessors, (108), 4 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) Word has length 141 [2023-12-24 15:47:08,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:47:08,290 INFO L225 Difference]: With dead ends: 1277 [2023-12-24 15:47:08,291 INFO L226 Difference]: Without dead ends: 781 [2023-12-24 15:47:08,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=293, Invalid=637, Unknown=0, NotChecked=0, Total=930 [2023-12-24 15:47:08,293 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 782 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:47:08,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 1013 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 15:47:08,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2023-12-24 15:47:08,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 607. [2023-12-24 15:47:08,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 526 states have (on average 1.3098859315589353) internal successors, (689), 527 states have internal predecessors, (689), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-24 15:47:08,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 805 transitions. [2023-12-24 15:47:08,339 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 805 transitions. Word has length 141 [2023-12-24 15:47:08,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:47:08,340 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 805 transitions. [2023-12-24 15:47:08,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 12 states have internal predecessors, (108), 4 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2023-12-24 15:47:08,340 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 805 transitions. [2023-12-24 15:47:08,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-24 15:47:08,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:47:08,342 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:47:08,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2023-12-24 15:47:08,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-24 15:47:08,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:08,756 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:47:08,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:47:08,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1563339906, now seen corresponding path program 1 times [2023-12-24 15:47:08,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:47:08,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87243350] [2023-12-24 15:47:08,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:47:08,757 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:08,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:47:08,758 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:47:08,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-24 15:47:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:47:08,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 15:47:08,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:47:08,979 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:47:08,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:47:08,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:47:08,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87243350] [2023-12-24 15:47:08,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87243350] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:47:08,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:47:08,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 15:47:08,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934368206] [2023-12-24 15:47:08,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:47:08,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 15:47:08,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:47:08,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 15:47:08,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 15:47:08,980 INFO L87 Difference]: Start difference. First operand 607 states and 805 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:47:09,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:47:09,059 INFO L93 Difference]: Finished difference Result 1121 states and 1499 transitions. [2023-12-24 15:47:09,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 15:47:09,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 143 [2023-12-24 15:47:09,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:47:09,061 INFO L225 Difference]: With dead ends: 1121 [2023-12-24 15:47:09,061 INFO L226 Difference]: Without dead ends: 615 [2023-12-24 15:47:09,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 15:47:09,064 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:47:09,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 284 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:47:09,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2023-12-24 15:47:09,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2023-12-24 15:47:09,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 534 states have (on average 1.3052434456928839) internal successors, (697), 535 states have internal predecessors, (697), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-24 15:47:09,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 813 transitions. [2023-12-24 15:47:09,124 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 813 transitions. Word has length 143 [2023-12-24 15:47:09,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:47:09,125 INFO L495 AbstractCegarLoop]: Abstraction has 615 states and 813 transitions. [2023-12-24 15:47:09,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:47:09,125 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 813 transitions. [2023-12-24 15:47:09,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-24 15:47:09,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:47:09,126 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:47:09,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-24 15:47:09,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:09,331 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:47:09,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:47:09,331 INFO L85 PathProgramCache]: Analyzing trace with hash -2077149192, now seen corresponding path program 1 times [2023-12-24 15:47:09,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:47:09,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135236258] [2023-12-24 15:47:09,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:47:09,332 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:09,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:47:09,334 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:47:09,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-24 15:47:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:47:09,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 15:47:09,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:47:09,572 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:47:09,572 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:47:09,572 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:47:09,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135236258] [2023-12-24 15:47:09,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135236258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:47:09,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:47:09,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 15:47:09,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320076133] [2023-12-24 15:47:09,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:47:09,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 15:47:09,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:47:09,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 15:47:09,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 15:47:09,574 INFO L87 Difference]: Start difference. First operand 615 states and 813 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:47:09,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:47:09,643 INFO L93 Difference]: Finished difference Result 1185 states and 1577 transitions. [2023-12-24 15:47:09,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 15:47:09,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 143 [2023-12-24 15:47:09,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:47:09,662 INFO L225 Difference]: With dead ends: 1185 [2023-12-24 15:47:09,662 INFO L226 Difference]: Without dead ends: 681 [2023-12-24 15:47:09,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 15:47:09,665 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 20 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:47:09,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 285 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:47:09,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2023-12-24 15:47:09,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 621. [2023-12-24 15:47:09,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 540 states have (on average 1.3018518518518518) internal successors, (703), 541 states have internal predecessors, (703), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-24 15:47:09,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 819 transitions. [2023-12-24 15:47:09,712 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 819 transitions. Word has length 143 [2023-12-24 15:47:09,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:47:09,712 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 819 transitions. [2023-12-24 15:47:09,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:47:09,712 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 819 transitions. [2023-12-24 15:47:09,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-24 15:47:09,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:47:09,713 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:47:09,718 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 [2023-12-24 15:47:09,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:09,918 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:47:09,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:47:09,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1725642797, now seen corresponding path program 1 times [2023-12-24 15:47:09,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:47:09,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447327490] [2023-12-24 15:47:09,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:47:09,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:09,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:47:09,920 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:47:09,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-24 15:47:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:47:10,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 15:47:10,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:47:10,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:47:10,194 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 34 treesize of output 22 [2023-12-24 15:47:10,204 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:47:10,204 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:47:10,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:47:10,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447327490] [2023-12-24 15:47:10,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447327490] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:47:10,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:47:10,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:47:10,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205295579] [2023-12-24 15:47:10,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:47:10,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:47:10,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:47:10,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:47:10,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:47:10,205 INFO L87 Difference]: Start difference. First operand 621 states and 819 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:47:10,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:47:10,310 INFO L93 Difference]: Finished difference Result 1134 states and 1502 transitions. [2023-12-24 15:47:10,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:47:10,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 143 [2023-12-24 15:47:10,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:47:10,324 INFO L225 Difference]: With dead ends: 1134 [2023-12-24 15:47:10,324 INFO L226 Difference]: Without dead ends: 624 [2023-12-24 15:47:10,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:47:10,326 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 138 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:47:10,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 742 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:47:10,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2023-12-24 15:47:10,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 621. [2023-12-24 15:47:10,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 540 states have (on average 1.2962962962962963) internal successors, (700), 541 states have internal predecessors, (700), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-24 15:47:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 816 transitions. [2023-12-24 15:47:10,394 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 816 transitions. Word has length 143 [2023-12-24 15:47:10,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:47:10,395 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 816 transitions. [2023-12-24 15:47:10,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:47:10,395 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 816 transitions. [2023-12-24 15:47:10,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-24 15:47:10,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:47:10,396 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:47:10,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-24 15:47:10,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:10,601 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:47:10,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:47:10,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1668324913, now seen corresponding path program 1 times [2023-12-24 15:47:10,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:47:10,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521947901] [2023-12-24 15:47:10,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:47:10,602 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:10,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:47:10,625 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:47:10,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-24 15:47:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:47:10,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 15:47:10,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:47:12,132 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 21 treesize of output 20 [2023-12-24 15:47:12,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2023-12-24 15:47:13,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:47:13,814 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 [2023-12-24 15:47:14,169 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 [2023-12-24 15:47:14,530 INFO L349 Elim1Store]: treesize reduction 55, result has 21.4 percent of original size [2023-12-24 15:47:14,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 42 treesize of output 58 [2023-12-24 15:47:14,791 INFO L349 Elim1Store]: treesize reduction 62, result has 41.0 percent of original size [2023-12-24 15:47:14,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 63 [2023-12-24 15:47:15,086 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:47:15,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 22 [2023-12-24 15:47:15,089 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 [2023-12-24 15:47:15,110 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 97 proven. 350 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-12-24 15:47:15,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:47:20,824 WARN L854 $PredicateComparison]: unable to prove that (forall ((~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.base (_ BitVec 32)) (~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var3_Pointer~0.offset (_ BitVec 32)) (~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var1_Pointer~0.offset (_ BitVec 32)) (~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var1_Pointer~0.base (_ BitVec 32)) (~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.offset (_ BitVec 32)) (~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var3_Pointer~0.base (_ BitVec 32))) (bvule (select (select (store |c_#memory_int#7| c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var2_Pointer~0.base (store (select |c_#memory_int#7| c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var2_Pointer~0.base) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var2_Pointer~0.offset (bvadd (bvneg (select (select |c_#memory_int#7| ~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var1_Pointer~0.base) ~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var1_Pointer~0.offset)) (select (select |c_#memory_int#7| ~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var3_Pointer~0.base) ~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var3_Pointer~0.offset)))) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.base) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.offset) ((_ sign_extend 24) ((_ extract 7 0) (select (select (store |c_#memory_int#3| c_~signed_char_Array_0_arraysigned_char_Array_0Var3_Pointer~0.base (store (select |c_#memory_int#3| c_~signed_char_Array_0_arraysigned_char_Array_0Var3_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var3_Pointer~0.offset ((_ sign_extend 24) ((_ extract 7 0) (select (select |c_#memory_int#3| ~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.base) ~signed_char_Array_0_arraysigned_char_Array_0Var2_Pointer~0.offset))))) c_~signed_char_Array_0_arraysigned_char_Array_0Var1_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var1_Pointer~0.offset))))) is different from false [2023-12-24 15:47:20,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:47:20,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521947901] [2023-12-24 15:47:20,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521947901] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:47:20,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [890606372] [2023-12-24 15:47:20,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:47:20,866 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:47:20,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:47:20,867 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:47:20,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2023-12-24 15:47:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:47:21,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 15:47:21,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:47:22,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:47:22,582 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 [2023-12-24 15:47:22,748 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 [2023-12-24 15:47:23,161 INFO L349 Elim1Store]: treesize reduction 62, result has 41.0 percent of original size [2023-12-24 15:47:23,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 63 [2023-12-24 15:47:23,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 15:47:23,382 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 [2023-12-24 15:47:23,426 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 134 proven. 126 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-12-24 15:47:23,426 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:47:23,549 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 35 [2023-12-24 15:47:23,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [890606372] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:47:23,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:47:23,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2023-12-24 15:47:23,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52402577] [2023-12-24 15:47:23,725 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:47:23,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-24 15:47:23,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:47:23,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-24 15:47:23,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=663, Unknown=1, NotChecked=52, Total=812 [2023-12-24 15:47:23,726 INFO L87 Difference]: Start difference. First operand 621 states and 816 transitions. Second operand has 23 states, 21 states have (on average 6.476190476190476) internal successors, (136), 22 states have internal predecessors, (136), 10 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (34), 8 states have call predecessors, (34), 10 states have call successors, (34) [2023-12-24 15:47:27,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:47:27,935 INFO L93 Difference]: Finished difference Result 1454 states and 1912 transitions. [2023-12-24 15:47:27,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-24 15:47:27,936 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 6.476190476190476) internal successors, (136), 22 states have internal predecessors, (136), 10 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (34), 8 states have call predecessors, (34), 10 states have call successors, (34) Word has length 143 [2023-12-24 15:47:27,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:47:27,938 INFO L225 Difference]: With dead ends: 1454 [2023-12-24 15:47:27,938 INFO L226 Difference]: Without dead ends: 931 [2023-12-24 15:47:27,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=528, Invalid=2337, Unknown=1, NotChecked=104, Total=2970 [2023-12-24 15:47:27,940 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 1152 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 1578 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 1903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-24 15:47:27,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 1360 Invalid, 1903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1578 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-24 15:47:27,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2023-12-24 15:47:27,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 845. [2023-12-24 15:47:27,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 756 states have (on average 1.3055555555555556) internal successors, (987), 758 states have internal predecessors, (987), 63 states have call successors, (63), 25 states have call predecessors, (63), 25 states have return successors, (63), 61 states have call predecessors, (63), 63 states have call successors, (63) [2023-12-24 15:47:27,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1113 transitions. [2023-12-24 15:47:27,999 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1113 transitions. Word has length 143 [2023-12-24 15:47:27,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:47:27,999 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1113 transitions. [2023-12-24 15:47:27,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 6.476190476190476) internal successors, (136), 22 states have internal predecessors, (136), 10 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (34), 8 states have call predecessors, (34), 10 states have call successors, (34) [2023-12-24 15:47:27,999 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1113 transitions. [2023-12-24 15:47:28,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 15:47:28,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:47:28,000 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:47:28,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2023-12-24 15:47:28,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-24 15:47:28,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:28,413 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:47:28,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:47:28,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1246800509, now seen corresponding path program 1 times [2023-12-24 15:47:28,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:47:28,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630418074] [2023-12-24 15:47:28,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:47:28,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:28,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:47:28,415 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:47:28,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-24 15:47:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:47:28,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 15:47:28,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:47:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:47:28,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:47:28,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:47:28,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630418074] [2023-12-24 15:47:28,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630418074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:47:28,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:47:28,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 15:47:28,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657183323] [2023-12-24 15:47:28,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:47:28,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 15:47:28,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:47:28,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 15:47:28,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:47:28,757 INFO L87 Difference]: Start difference. First operand 845 states and 1113 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:47:29,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:47:29,185 INFO L93 Difference]: Finished difference Result 1937 states and 2533 transitions. [2023-12-24 15:47:29,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 15:47:29,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 145 [2023-12-24 15:47:29,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:47:29,189 INFO L225 Difference]: With dead ends: 1937 [2023-12-24 15:47:29,189 INFO L226 Difference]: Without dead ends: 1216 [2023-12-24 15:47:29,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-12-24 15:47:29,192 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 278 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 15:47:29,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 735 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 15:47:29,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2023-12-24 15:47:29,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 921. [2023-12-24 15:47:29,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 832 states have (on average 1.3064903846153846) internal successors, (1087), 834 states have internal predecessors, (1087), 63 states have call successors, (63), 25 states have call predecessors, (63), 25 states have return successors, (63), 61 states have call predecessors, (63), 63 states have call successors, (63) [2023-12-24 15:47:29,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1213 transitions. [2023-12-24 15:47:29,272 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1213 transitions. Word has length 145 [2023-12-24 15:47:29,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:47:29,272 INFO L495 AbstractCegarLoop]: Abstraction has 921 states and 1213 transitions. [2023-12-24 15:47:29,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:47:29,272 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1213 transitions. [2023-12-24 15:47:29,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 15:47:29,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:47:29,273 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:47:29,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-24 15:47:29,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:29,478 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:47:29,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:47:29,479 INFO L85 PathProgramCache]: Analyzing trace with hash -308028340, now seen corresponding path program 1 times [2023-12-24 15:47:29,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:47:29,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604590193] [2023-12-24 15:47:29,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:47:29,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:29,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:47:29,481 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:47:29,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-24 15:47:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:47:29,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 15:47:29,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:47:30,602 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 17 treesize of output 17 [2023-12-24 15:47:30,813 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:47:30,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 27 [2023-12-24 15:47:30,826 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 15:47:30,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:47:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:47:30,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:47:30,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604590193] [2023-12-24 15:47:30,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604590193] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:47:30,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:47:30,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-12-24 15:47:30,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800382796] [2023-12-24 15:47:30,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:47:30,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:47:30,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:47:30,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:47:30,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-24 15:47:30,917 INFO L87 Difference]: Start difference. First operand 921 states and 1213 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:47:31,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:47:31,028 INFO L93 Difference]: Finished difference Result 939 states and 1232 transitions. [2023-12-24 15:47:31,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:47:31,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 145 [2023-12-24 15:47:31,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:47:31,031 INFO L225 Difference]: With dead ends: 939 [2023-12-24 15:47:31,032 INFO L226 Difference]: Without dead ends: 937 [2023-12-24 15:47:31,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 15:47:31,032 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 81 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:47:31,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 617 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:47:31,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2023-12-24 15:47:31,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 937. [2023-12-24 15:47:31,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 846 states have (on average 1.301418439716312) internal successors, (1101), 848 states have internal predecessors, (1101), 63 states have call successors, (63), 27 states have call predecessors, (63), 27 states have return successors, (63), 61 states have call predecessors, (63), 63 states have call successors, (63) [2023-12-24 15:47:31,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1227 transitions. [2023-12-24 15:47:31,095 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1227 transitions. Word has length 145 [2023-12-24 15:47:31,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:47:31,095 INFO L495 AbstractCegarLoop]: Abstraction has 937 states and 1227 transitions. [2023-12-24 15:47:31,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:47:31,095 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1227 transitions. [2023-12-24 15:47:31,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 15:47:31,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:47:31,096 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:47:31,119 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 [2023-12-24 15:47:31,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:31,304 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:47:31,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:47:31,305 INFO L85 PathProgramCache]: Analyzing trace with hash -307968758, now seen corresponding path program 1 times [2023-12-24 15:47:31,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:47:31,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991580657] [2023-12-24 15:47:31,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:47:31,305 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 [2023-12-24 15:47:31,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:47:31,321 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:47:31,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-24 15:47:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:47:31,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 15:47:31,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:47:33,184 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 103 treesize of output 59 [2023-12-24 15:47:33,598 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:47:33,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 173 treesize of output 77 [2023-12-24 15:47:33,646 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-12-24 15:47:33,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:47:34,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:47:34,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991580657] [2023-12-24 15:47:34,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991580657] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:47:34,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [792197186] [2023-12-24 15:47:34,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:47:34,277 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:47:34,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:47:34,278 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:47:34,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2023-12-24 15:47:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:47:34,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 15:47:34,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:47:35,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:47:36,761 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 103 treesize of output 59 [2023-12-24 15:47:37,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 77 [2023-12-24 15:47:37,236 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-12-24 15:47:37,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:47:37,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [792197186] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:47:37,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:47:37,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-12-24 15:47:37,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85988911] [2023-12-24 15:47:37,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:47:37,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 15:47:37,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:47:37,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 15:47:37,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-12-24 15:47:37,878 INFO L87 Difference]: Start difference. First operand 937 states and 1227 transitions. Second operand has 16 states, 16 states have (on average 7.9375) internal successors, (127), 15 states have internal predecessors, (127), 4 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2023-12-24 15:47:38,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:47:38,801 INFO L93 Difference]: Finished difference Result 2693 states and 3524 transitions. [2023-12-24 15:47:38,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 15:47:38,803 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.9375) internal successors, (127), 15 states have internal predecessors, (127), 4 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) Word has length 145 [2023-12-24 15:47:38,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:47:38,808 INFO L225 Difference]: With dead ends: 2693 [2023-12-24 15:47:38,808 INFO L226 Difference]: Without dead ends: 1884 [2023-12-24 15:47:38,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 351 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2023-12-24 15:47:38,812 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 352 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 15:47:38,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 1036 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 15:47:38,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2023-12-24 15:47:38,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1859. [2023-12-24 15:47:38,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1678 states have (on average 1.2955899880810489) internal successors, (2174), 1686 states have internal predecessors, (2174), 122 states have call successors, (122), 58 states have call predecessors, (122), 58 states have return successors, (122), 114 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 15:47:38,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2418 transitions. [2023-12-24 15:47:38,986 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2418 transitions. Word has length 145 [2023-12-24 15:47:38,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:47:38,986 INFO L495 AbstractCegarLoop]: Abstraction has 1859 states and 2418 transitions. [2023-12-24 15:47:38,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.9375) internal successors, (127), 15 states have internal predecessors, (127), 4 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2023-12-24 15:47:38,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2418 transitions. [2023-12-24 15:47:38,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 15:47:38,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:47:38,988 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:47:38,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-24 15:47:39,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2023-12-24 15:47:39,401 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=3,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:47:39,402 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:47:39,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:47:39,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1060057082, now seen corresponding path program 1 times [2023-12-24 15:47:39,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:47:39,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577790461] [2023-12-24 15:47:39,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:47:39,403 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:39,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:47:39,404 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:47:39,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-24 15:47:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:47:39,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 15:47:39,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:47:39,667 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 18 treesize of output 14 [2023-12-24 15:47:39,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2023-12-24 15:47:39,717 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 [2023-12-24 15:47:39,761 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:47:39,761 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:47:39,761 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:47:39,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577790461] [2023-12-24 15:47:39,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577790461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:47:39,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:47:39,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 15:47:39,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704502771] [2023-12-24 15:47:39,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:47:39,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 15:47:39,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:47:39,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 15:47:39,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-24 15:47:39,762 INFO L87 Difference]: Start difference. First operand 1859 states and 2418 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:47:40,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:47:40,463 INFO L93 Difference]: Finished difference Result 3684 states and 4778 transitions. [2023-12-24 15:47:40,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 15:47:40,464 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 145 [2023-12-24 15:47:40,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:47:40,469 INFO L225 Difference]: With dead ends: 3684 [2023-12-24 15:47:40,469 INFO L226 Difference]: Without dead ends: 2068 [2023-12-24 15:47:40,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-12-24 15:47:40,470 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 160 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 15:47:40,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 1156 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 15:47:40,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2023-12-24 15:47:40,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 1891. [2023-12-24 15:47:40,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1710 states have (on average 1.2912280701754386) internal successors, (2208), 1718 states have internal predecessors, (2208), 122 states have call successors, (122), 58 states have call predecessors, (122), 58 states have return successors, (122), 114 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 15:47:40,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 2452 transitions. [2023-12-24 15:47:40,618 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 2452 transitions. Word has length 145 [2023-12-24 15:47:40,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:47:40,618 INFO L495 AbstractCegarLoop]: Abstraction has 1891 states and 2452 transitions. [2023-12-24 15:47:40,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:47:40,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 2452 transitions. [2023-12-24 15:47:40,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 15:47:40,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:47:40,620 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:47:40,642 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 (29)] Ended with exit code 0 [2023-12-24 15:47:40,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:40,825 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:47:40,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:47:40,825 INFO L85 PathProgramCache]: Analyzing trace with hash -801891644, now seen corresponding path program 1 times [2023-12-24 15:47:40,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:47:40,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857551583] [2023-12-24 15:47:40,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:47:40,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:40,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:47:40,827 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:47:40,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-24 15:47:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:47:41,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 15:47:41,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:47:41,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 15:47:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:47:41,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:47:41,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:47:41,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857551583] [2023-12-24 15:47:41,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857551583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:47:41,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:47:41,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:47:41,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518567673] [2023-12-24 15:47:41,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:47:41,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:47:41,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:47:41,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:47:41,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:47:41,179 INFO L87 Difference]: Start difference. First operand 1891 states and 2452 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:47:41,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:47:41,606 INFO L93 Difference]: Finished difference Result 3666 states and 4747 transitions. [2023-12-24 15:47:41,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 15:47:41,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 145 [2023-12-24 15:47:41,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:47:41,612 INFO L225 Difference]: With dead ends: 3666 [2023-12-24 15:47:41,612 INFO L226 Difference]: Without dead ends: 2018 [2023-12-24 15:47:41,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:47:41,615 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 99 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 15:47:41,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 502 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 15:47:41,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2023-12-24 15:47:41,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1875. [2023-12-24 15:47:41,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1694 states have (on average 1.2880755608028336) internal successors, (2182), 1702 states have internal predecessors, (2182), 122 states have call successors, (122), 58 states have call predecessors, (122), 58 states have return successors, (122), 114 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 15:47:41,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 2426 transitions. [2023-12-24 15:47:41,768 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 2426 transitions. Word has length 145 [2023-12-24 15:47:41,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:47:41,769 INFO L495 AbstractCegarLoop]: Abstraction has 1875 states and 2426 transitions. [2023-12-24 15:47:41,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:47:41,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 2426 transitions. [2023-12-24 15:47:41,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 15:47:41,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:47:41,770 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:47:41,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-24 15:47:41,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:41,976 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:47:41,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:47:41,976 INFO L85 PathProgramCache]: Analyzing trace with hash 550366653, now seen corresponding path program 1 times [2023-12-24 15:47:41,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:47:41,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294763172] [2023-12-24 15:47:41,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:47:41,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:41,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:47:41,978 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:47:41,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-24 15:47:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:47:42,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 15:47:42,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:47:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:47:42,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:47:42,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:47:42,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294763172] [2023-12-24 15:47:42,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1294763172] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:47:42,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:47:42,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 15:47:42,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793997030] [2023-12-24 15:47:42,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:47:42,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 15:47:42,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:47:42,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 15:47:42,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:47:42,360 INFO L87 Difference]: Start difference. First operand 1875 states and 2426 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:47:42,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:47:42,918 INFO L93 Difference]: Finished difference Result 4085 states and 5212 transitions. [2023-12-24 15:47:42,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 15:47:42,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 145 [2023-12-24 15:47:42,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:47:42,925 INFO L225 Difference]: With dead ends: 4085 [2023-12-24 15:47:42,925 INFO L226 Difference]: Without dead ends: 2453 [2023-12-24 15:47:42,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-24 15:47:42,927 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 232 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 15:47:42,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 764 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 15:47:42,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2453 states. [2023-12-24 15:47:43,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2453 to 1869. [2023-12-24 15:47:43,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1688 states have (on average 1.2819905213270142) internal successors, (2164), 1696 states have internal predecessors, (2164), 122 states have call successors, (122), 58 states have call predecessors, (122), 58 states have return successors, (122), 114 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 15:47:43,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2408 transitions. [2023-12-24 15:47:43,081 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2408 transitions. Word has length 145 [2023-12-24 15:47:43,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:47:43,082 INFO L495 AbstractCegarLoop]: Abstraction has 1869 states and 2408 transitions. [2023-12-24 15:47:43,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:47:43,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2408 transitions. [2023-12-24 15:47:43,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 15:47:43,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:47:43,084 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:47:43,091 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 (31)] Ended with exit code 0 [2023-12-24 15:47:43,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:43,289 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:47:43,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:47:43,289 INFO L85 PathProgramCache]: Analyzing trace with hash -348070078, now seen corresponding path program 1 times [2023-12-24 15:47:43,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:47:43,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216935093] [2023-12-24 15:47:43,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:47:43,290 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:43,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:47:43,291 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:47:43,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-24 15:47:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:47:43,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-24 15:47:43,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:47:44,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:47:45,180 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 21 treesize of output 20 [2023-12-24 15:47:46,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 15:47:46,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 15:47:46,498 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 27 treesize of output 11 [2023-12-24 15:47:46,908 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 27 treesize of output 11 [2023-12-24 15:47:47,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-12-24 15:47:47,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 54 [2023-12-24 15:47:47,917 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 [2023-12-24 15:47:49,071 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 97 proven. 350 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-12-24 15:47:49,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:47:50,055 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:47:50,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:47:50,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216935093] [2023-12-24 15:47:50,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216935093] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:47:50,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:47:50,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [21] total 33 [2023-12-24 15:47:50,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776826009] [2023-12-24 15:47:50,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:47:50,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 15:47:50,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:47:50,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 15:47:50,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=869, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 15:47:50,057 INFO L87 Difference]: Start difference. First operand 1869 states and 2408 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:47:52,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:47:52,987 INFO L93 Difference]: Finished difference Result 4255 states and 5521 transitions. [2023-12-24 15:47:52,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 15:47:52,988 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 145 [2023-12-24 15:47:52,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:47:52,994 INFO L225 Difference]: With dead ends: 4255 [2023-12-24 15:47:52,994 INFO L226 Difference]: Without dead ends: 3069 [2023-12-24 15:47:52,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=410, Invalid=1482, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 15:47:52,996 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 701 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-24 15:47:52,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1701 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-24 15:47:52,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2023-12-24 15:47:53,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 2107. [2023-12-24 15:47:53,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2107 states, 1926 states have (on average 1.2969885773624092) internal successors, (2498), 1934 states have internal predecessors, (2498), 122 states have call successors, (122), 58 states have call predecessors, (122), 58 states have return successors, (122), 114 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 15:47:53,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2107 states to 2107 states and 2742 transitions. [2023-12-24 15:47:53,154 INFO L78 Accepts]: Start accepts. Automaton has 2107 states and 2742 transitions. Word has length 145 [2023-12-24 15:47:53,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:47:53,154 INFO L495 AbstractCegarLoop]: Abstraction has 2107 states and 2742 transitions. [2023-12-24 15:47:53,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:47:53,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2107 states and 2742 transitions. [2023-12-24 15:47:53,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 15:47:53,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:47:53,156 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:47:53,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-24 15:47:53,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:53,362 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:47:53,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:47:53,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1369138432, now seen corresponding path program 1 times [2023-12-24 15:47:53,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:47:53,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274636997] [2023-12-24 15:47:53,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:47:53,363 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:53,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:47:53,364 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:47:53,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-24 15:47:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:47:53,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-24 15:47:53,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:47:54,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:47:54,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 15:47:55,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:47:55,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 15:47:55,759 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 27 treesize of output 11 [2023-12-24 15:47:56,032 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 27 treesize of output 11 [2023-12-24 15:47:56,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 15:47:56,452 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 28 treesize of output 23 [2023-12-24 15:47:56,505 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 [2023-12-24 15:47:56,759 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:47:56,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 26 [2023-12-24 15:47:56,865 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 97 proven. 350 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-12-24 15:47:56,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:47:57,218 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:47:57,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:47:57,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274636997] [2023-12-24 15:47:57,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274636997] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:47:57,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:47:57,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [19] total 27 [2023-12-24 15:47:57,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849236566] [2023-12-24 15:47:57,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:47:57,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 15:47:57,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:47:57,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 15:47:57,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2023-12-24 15:47:57,220 INFO L87 Difference]: Start difference. First operand 2107 states and 2742 transitions. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:47:58,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:47:58,598 INFO L93 Difference]: Finished difference Result 4207 states and 5506 transitions. [2023-12-24 15:47:58,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 15:47:58,598 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 145 [2023-12-24 15:47:58,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:47:58,605 INFO L225 Difference]: With dead ends: 4207 [2023-12-24 15:47:58,605 INFO L226 Difference]: Without dead ends: 2817 [2023-12-24 15:47:58,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=200, Invalid=1282, Unknown=0, NotChecked=0, Total=1482 [2023-12-24 15:47:58,607 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 345 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 15:47:58,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 1642 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 15:47:58,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2023-12-24 15:47:58,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2111. [2023-12-24 15:47:58,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 1930 states have (on average 1.2963730569948186) internal successors, (2502), 1938 states have internal predecessors, (2502), 122 states have call successors, (122), 58 states have call predecessors, (122), 58 states have return successors, (122), 114 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 15:47:58,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 2746 transitions. [2023-12-24 15:47:58,753 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 2746 transitions. Word has length 145 [2023-12-24 15:47:58,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:47:58,753 INFO L495 AbstractCegarLoop]: Abstraction has 2111 states and 2746 transitions. [2023-12-24 15:47:58,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:47:58,754 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 2746 transitions. [2023-12-24 15:47:58,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 15:47:58,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:47:58,755 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:47:58,762 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 (33)] Forceful destruction successful, exit code 0 [2023-12-24 15:47:58,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:58,962 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:47:58,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:47:58,962 INFO L85 PathProgramCache]: Analyzing trace with hash -622829692, now seen corresponding path program 1 times [2023-12-24 15:47:58,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:47:58,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077608509] [2023-12-24 15:47:58,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:47:58,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:47:58,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:47:58,964 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:47:58,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-24 15:47:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:47:59,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 15:47:59,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:47:59,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:48:00,480 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 17 treesize of output 17 [2023-12-24 15:48:00,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2023-12-24 15:48:00,932 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:48:00,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 22 [2023-12-24 15:48:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 15:48:01,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:48:01,426 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:48:01,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:48:01,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077608509] [2023-12-24 15:48:01,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077608509] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:48:01,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:48:01,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 25 [2023-12-24 15:48:01,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347676549] [2023-12-24 15:48:01,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:48:01,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 15:48:01,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:48:01,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 15:48:01,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2023-12-24 15:48:01,428 INFO L87 Difference]: Start difference. First operand 2111 states and 2746 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:48:03,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:48:03,277 INFO L93 Difference]: Finished difference Result 4861 states and 6342 transitions. [2023-12-24 15:48:03,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 15:48:03,277 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 145 [2023-12-24 15:48:03,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:48:03,283 INFO L225 Difference]: With dead ends: 4861 [2023-12-24 15:48:03,283 INFO L226 Difference]: Without dead ends: 3467 [2023-12-24 15:48:03,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=326, Invalid=1396, Unknown=0, NotChecked=0, Total=1722 [2023-12-24 15:48:03,284 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 526 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:48:03,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 1783 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 15:48:03,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3467 states. [2023-12-24 15:48:03,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3467 to 2391. [2023-12-24 15:48:03,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2391 states, 2210 states have (on average 1.3149321266968326) internal successors, (2906), 2218 states have internal predecessors, (2906), 122 states have call successors, (122), 58 states have call predecessors, (122), 58 states have return successors, (122), 114 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 15:48:03,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2391 states to 2391 states and 3150 transitions. [2023-12-24 15:48:03,435 INFO L78 Accepts]: Start accepts. Automaton has 2391 states and 3150 transitions. Word has length 145 [2023-12-24 15:48:03,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:48:03,436 INFO L495 AbstractCegarLoop]: Abstraction has 2391 states and 3150 transitions. [2023-12-24 15:48:03,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:48:03,436 INFO L276 IsEmpty]: Start isEmpty. Operand 2391 states and 3150 transitions. [2023-12-24 15:48:03,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 15:48:03,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:48:03,437 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:48:03,446 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 [2023-12-24 15:48:03,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:48:03,644 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:48:03,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:48:03,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1643898046, now seen corresponding path program 1 times [2023-12-24 15:48:03,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:48:03,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476836512] [2023-12-24 15:48:03,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:48:03,645 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:48:03,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:48:03,646 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:48:03,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-24 15:48:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:48:03,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-24 15:48:03,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:48:05,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 15:48:05,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:48:06,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:48:06,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 15:48:06,709 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 27 treesize of output 11 [2023-12-24 15:48:07,085 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 27 treesize of output 11 [2023-12-24 15:48:07,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 15:48:07,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2023-12-24 15:48:07,824 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 [2023-12-24 15:48:08,118 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:48:08,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 34 [2023-12-24 15:48:08,194 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 57 proven. 350 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-12-24 15:48:08,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:48:09,375 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:48:09,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476836512] [2023-12-24 15:48:09,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476836512] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:48:09,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [580857827] [2023-12-24 15:48:09,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:48:09,376 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:48:09,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:48:09,377 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:48:09,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2023-12-24 15:48:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:48:10,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-24 15:48:10,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:48:11,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:48:12,033 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 21 treesize of output 20 [2023-12-24 15:48:13,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:48:14,624 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 [2023-12-24 15:48:15,217 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 [2023-12-24 15:48:15,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 28 [2023-12-24 15:48:16,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2023-12-24 15:48:16,525 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 [2023-12-24 15:48:17,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 38 [2023-12-24 15:48:17,222 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 112 proven. 365 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-24 15:48:17,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:48:17,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [580857827] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:48:17,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:48:17,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 21] total 35 [2023-12-24 15:48:17,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613819235] [2023-12-24 15:48:17,980 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:48:17,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-24 15:48:17,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:48:17,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-24 15:48:17,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1645, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 15:48:17,981 INFO L87 Difference]: Start difference. First operand 2391 states and 3150 transitions. Second operand has 36 states, 33 states have (on average 4.363636363636363) internal successors, (144), 34 states have internal predecessors, (144), 13 states have call successors, (34), 11 states have call predecessors, (34), 13 states have return successors, (34), 10 states have call predecessors, (34), 13 states have call successors, (34) [2023-12-24 15:48:26,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:48:26,518 INFO L93 Difference]: Finished difference Result 4393 states and 5829 transitions. [2023-12-24 15:48:26,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-24 15:48:26,519 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 4.363636363636363) internal successors, (144), 34 states have internal predecessors, (144), 13 states have call successors, (34), 11 states have call predecessors, (34), 13 states have return successors, (34), 10 states have call predecessors, (34), 13 states have call successors, (34) Word has length 145 [2023-12-24 15:48:26,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:48:26,528 INFO L225 Difference]: With dead ends: 4393 [2023-12-24 15:48:26,528 INFO L226 Difference]: Without dead ends: 2777 [2023-12-24 15:48:26,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 325 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1508 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=860, Invalid=4396, Unknown=0, NotChecked=0, Total=5256 [2023-12-24 15:48:26,532 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 704 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 2750 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 2516 SdHoareTripleChecker+Invalid, 3003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 2750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-24 15:48:26,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 2516 Invalid, 3003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 2750 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-24 15:48:26,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2023-12-24 15:48:26,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 2511. [2023-12-24 15:48:26,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 2328 states have (on average 1.3195876288659794) internal successors, (3072), 2336 states have internal predecessors, (3072), 122 states have call successors, (122), 60 states have call predecessors, (122), 60 states have return successors, (122), 114 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 15:48:26,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3316 transitions. [2023-12-24 15:48:26,715 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3316 transitions. Word has length 145 [2023-12-24 15:48:26,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:48:26,716 INFO L495 AbstractCegarLoop]: Abstraction has 2511 states and 3316 transitions. [2023-12-24 15:48:26,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 4.363636363636363) internal successors, (144), 34 states have internal predecessors, (144), 13 states have call successors, (34), 11 states have call predecessors, (34), 13 states have return successors, (34), 10 states have call predecessors, (34), 13 states have call successors, (34) [2023-12-24 15:48:26,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3316 transitions. [2023-12-24 15:48:26,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 15:48:26,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:48:26,728 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:48:26,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-24 15:48:26,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (36)] Ended with exit code 0 [2023-12-24 15:48:27,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:48:27,134 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:48:27,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:48:27,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1590141044, now seen corresponding path program 1 times [2023-12-24 15:48:27,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:48:27,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001747521] [2023-12-24 15:48:27,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:48:27,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:48:27,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:48:27,136 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:48:27,140 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 (37)] Waiting until timeout for monitored process [2023-12-24 15:48:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:48:27,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 15:48:27,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:48:27,416 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-12-24 15:48:27,416 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:48:27,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:48:27,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001747521] [2023-12-24 15:48:27,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001747521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:48:27,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:48:27,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 15:48:27,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514112870] [2023-12-24 15:48:27,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:48:27,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 15:48:27,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:48:27,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 15:48:27,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 15:48:27,418 INFO L87 Difference]: Start difference. First operand 2511 states and 3316 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 15:48:27,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:48:27,614 INFO L93 Difference]: Finished difference Result 4849 states and 6420 transitions. [2023-12-24 15:48:27,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:48:27,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 145 [2023-12-24 15:48:27,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:48:27,618 INFO L225 Difference]: With dead ends: 4849 [2023-12-24 15:48:27,618 INFO L226 Difference]: Without dead ends: 2530 [2023-12-24 15:48:27,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:48:27,620 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 7 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:48:27,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 435 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:48:27,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2023-12-24 15:48:27,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2511. [2023-12-24 15:48:27,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 2328 states have (on average 1.3174398625429553) internal successors, (3067), 2336 states have internal predecessors, (3067), 122 states have call successors, (122), 60 states have call predecessors, (122), 60 states have return successors, (122), 114 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 15:48:27,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3311 transitions. [2023-12-24 15:48:27,799 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3311 transitions. Word has length 145 [2023-12-24 15:48:27,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:48:27,799 INFO L495 AbstractCegarLoop]: Abstraction has 2511 states and 3311 transitions. [2023-12-24 15:48:27,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 15:48:27,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3311 transitions. [2023-12-24 15:48:27,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 15:48:27,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:48:27,801 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:48:27,807 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 (37)] Ended with exit code 0 [2023-12-24 15:48:28,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:48:28,006 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:48:28,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:48:28,007 INFO L85 PathProgramCache]: Analyzing trace with hash -129262206, now seen corresponding path program 1 times [2023-12-24 15:48:28,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:48:28,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570376097] [2023-12-24 15:48:28,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:48:28,007 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:48:28,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:48:28,008 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:48:28,023 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 (38)] Waiting until timeout for monitored process [2023-12-24 15:48:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:48:28,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 15:48:28,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:48:28,358 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:48:28,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:48:28,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:48:28,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570376097] [2023-12-24 15:48:28,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570376097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:48:28,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:48:28,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 15:48:28,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554151568] [2023-12-24 15:48:28,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:48:28,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 15:48:28,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:48:28,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 15:48:28,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:48:28,360 INFO L87 Difference]: Start difference. First operand 2511 states and 3311 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:48:29,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:48:29,124 INFO L93 Difference]: Finished difference Result 6407 states and 8403 transitions. [2023-12-24 15:48:29,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 15:48:29,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 147 [2023-12-24 15:48:29,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:48:29,130 INFO L225 Difference]: With dead ends: 6407 [2023-12-24 15:48:29,131 INFO L226 Difference]: Without dead ends: 4263 [2023-12-24 15:48:29,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-24 15:48:29,133 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 126 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 15:48:29,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1093 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 15:48:29,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4263 states. [2023-12-24 15:48:29,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4263 to 3123. [2023-12-24 15:48:29,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 2940 states have (on average 1.3357142857142856) internal successors, (3927), 2948 states have internal predecessors, (3927), 122 states have call successors, (122), 60 states have call predecessors, (122), 60 states have return successors, (122), 114 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 15:48:29,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 4171 transitions. [2023-12-24 15:48:29,338 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 4171 transitions. Word has length 147 [2023-12-24 15:48:29,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:48:29,338 INFO L495 AbstractCegarLoop]: Abstraction has 3123 states and 4171 transitions. [2023-12-24 15:48:29,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:48:29,338 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 4171 transitions. [2023-12-24 15:48:29,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 15:48:29,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:48:29,340 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:48:29,360 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 (38)] Ended with exit code 0 [2023-12-24 15:48:29,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:48:29,546 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:48:29,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:48:29,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1409125884, now seen corresponding path program 1 times [2023-12-24 15:48:29,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:48:29,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000779262] [2023-12-24 15:48:29,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:48:29,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:48:29,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:48:29,548 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:48:29,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-12-24 15:48:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:48:29,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 15:48:29,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:48:30,559 INFO L349 Elim1Store]: treesize reduction 9, result has 87.7 percent of original size [2023-12-24 15:48:30,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 98 [2023-12-24 15:48:30,684 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:48:30,684 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:48:30,684 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:48:30,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000779262] [2023-12-24 15:48:30,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000779262] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:48:30,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:48:30,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-24 15:48:30,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956261387] [2023-12-24 15:48:30,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:48:30,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 15:48:30,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:48:30,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 15:48:30,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-24 15:48:30,686 INFO L87 Difference]: Start difference. First operand 3123 states and 4171 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:48:35,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:48:41,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:48:45,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:48:45,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:48:45,775 INFO L93 Difference]: Finished difference Result 7135 states and 9356 transitions. [2023-12-24 15:48:45,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 15:48:45,777 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 147 [2023-12-24 15:48:45,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:48:45,783 INFO L225 Difference]: With dead ends: 7135 [2023-12-24 15:48:45,783 INFO L226 Difference]: Without dead ends: 4463 [2023-12-24 15:48:45,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2023-12-24 15:48:45,785 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 422 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:48:45,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 1554 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 755 Invalid, 3 Unknown, 0 Unchecked, 14.0s Time] [2023-12-24 15:48:45,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4463 states. [2023-12-24 15:48:45,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4463 to 3315. [2023-12-24 15:48:45,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3315 states, 3132 states have (on average 1.33301404853129) internal successors, (4175), 3140 states have internal predecessors, (4175), 122 states have call successors, (122), 60 states have call predecessors, (122), 60 states have return successors, (122), 114 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 15:48:45,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3315 states to 3315 states and 4419 transitions. [2023-12-24 15:48:45,988 INFO L78 Accepts]: Start accepts. Automaton has 3315 states and 4419 transitions. Word has length 147 [2023-12-24 15:48:45,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:48:45,988 INFO L495 AbstractCegarLoop]: Abstraction has 3315 states and 4419 transitions. [2023-12-24 15:48:45,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:48:45,988 INFO L276 IsEmpty]: Start isEmpty. Operand 3315 states and 4419 transitions. [2023-12-24 15:48:45,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 15:48:45,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:48:45,990 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:48:46,010 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 (39)] Forceful destruction successful, exit code 0 [2023-12-24 15:48:46,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:48:46,197 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:48:46,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:48:46,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1557886728, now seen corresponding path program 1 times [2023-12-24 15:48:46,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:48:46,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344955574] [2023-12-24 15:48:46,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:48:46,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:48:46,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:48:46,199 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:48:46,201 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 (40)] Waiting until timeout for monitored process [2023-12-24 15:48:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:48:46,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 15:48:46,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:48:46,557 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:48:46,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:48:46,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:48:46,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [344955574] [2023-12-24 15:48:46,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [344955574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:48:46,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:48:46,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 15:48:46,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84072650] [2023-12-24 15:48:46,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:48:46,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 15:48:46,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:48:46,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 15:48:46,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:48:46,559 INFO L87 Difference]: Start difference. First operand 3315 states and 4419 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:48:47,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:48:47,425 INFO L93 Difference]: Finished difference Result 7324 states and 9676 transitions. [2023-12-24 15:48:47,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 15:48:47,426 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 147 [2023-12-24 15:48:47,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:48:47,432 INFO L225 Difference]: With dead ends: 7324 [2023-12-24 15:48:47,432 INFO L226 Difference]: Without dead ends: 4472 [2023-12-24 15:48:47,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-24 15:48:47,435 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 136 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 15:48:47,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 890 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 15:48:47,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4472 states. [2023-12-24 15:48:47,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 3525. [2023-12-24 15:48:47,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 3342 states have (on average 1.3360263315380012) internal successors, (4465), 3350 states have internal predecessors, (4465), 122 states have call successors, (122), 60 states have call predecessors, (122), 60 states have return successors, (122), 114 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 15:48:47,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 4709 transitions. [2023-12-24 15:48:47,645 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 4709 transitions. Word has length 147 [2023-12-24 15:48:47,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:48:47,645 INFO L495 AbstractCegarLoop]: Abstraction has 3525 states and 4709 transitions. [2023-12-24 15:48:47,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:48:47,645 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 4709 transitions. [2023-12-24 15:48:47,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 15:48:47,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:48:47,647 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:48:47,653 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 (40)] Ended with exit code 0 [2023-12-24 15:48:47,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:48:47,853 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:48:47,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:48:47,854 INFO L85 PathProgramCache]: Analyzing trace with hash -106629952, now seen corresponding path program 1 times [2023-12-24 15:48:47,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:48:47,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741473834] [2023-12-24 15:48:47,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:48:47,854 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:48:47,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:48:47,855 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:48:47,857 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 (41)] Waiting until timeout for monitored process [2023-12-24 15:48:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:48:48,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 15:48:48,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:48:48,402 INFO L349 Elim1Store]: treesize reduction 6, result has 83.8 percent of original size [2023-12-24 15:48:48,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 74 [2023-12-24 15:48:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:48:48,449 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:48:48,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:48:48,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741473834] [2023-12-24 15:48:48,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741473834] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:48:48,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:48:48,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 15:48:48,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623821793] [2023-12-24 15:48:48,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:48:48,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 15:48:48,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:48:48,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 15:48:48,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-24 15:48:48,451 INFO L87 Difference]: Start difference. First operand 3525 states and 4709 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:48:50,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:48:50,468 INFO L93 Difference]: Finished difference Result 7319 states and 9683 transitions. [2023-12-24 15:48:50,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 15:48:50,468 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 147 [2023-12-24 15:48:50,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:48:50,475 INFO L225 Difference]: With dead ends: 7319 [2023-12-24 15:48:50,475 INFO L226 Difference]: Without dead ends: 4213 [2023-12-24 15:48:50,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-12-24 15:48:50,478 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 270 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 15:48:50,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 1675 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 15:48:50,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4213 states. [2023-12-24 15:48:50,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4213 to 3441. [2023-12-24 15:48:50,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3441 states, 3258 states have (on average 1.3311847759361572) internal successors, (4337), 3266 states have internal predecessors, (4337), 122 states have call successors, (122), 60 states have call predecessors, (122), 60 states have return successors, (122), 114 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 15:48:50,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3441 states to 3441 states and 4581 transitions. [2023-12-24 15:48:50,688 INFO L78 Accepts]: Start accepts. Automaton has 3441 states and 4581 transitions. Word has length 147 [2023-12-24 15:48:50,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:48:50,688 INFO L495 AbstractCegarLoop]: Abstraction has 3441 states and 4581 transitions. [2023-12-24 15:48:50,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:48:50,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3441 states and 4581 transitions. [2023-12-24 15:48:50,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 15:48:50,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:48:50,690 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:48:50,708 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 (41)] Forceful destruction successful, exit code 0 [2023-12-24 15:48:50,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:48:50,896 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:48:50,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:48:50,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1535254474, now seen corresponding path program 1 times [2023-12-24 15:48:50,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:48:50,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943113755] [2023-12-24 15:48:50,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:48:50,897 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:48:50,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:48:50,898 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:48:50,932 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 (42)] Waiting until timeout for monitored process [2023-12-24 15:48:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:48:51,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 15:48:51,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:48:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:48:51,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:48:51,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:48:51,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943113755] [2023-12-24 15:48:51,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943113755] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:48:51,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:48:51,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 15:48:51,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262374682] [2023-12-24 15:48:51,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:48:51,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 15:48:51,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:48:51,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 15:48:51,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-24 15:48:51,653 INFO L87 Difference]: Start difference. First operand 3441 states and 4581 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:48:57,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:48:58,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:48:58,025 INFO L93 Difference]: Finished difference Result 7347 states and 9677 transitions. [2023-12-24 15:48:58,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 15:48:58,027 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 147 [2023-12-24 15:48:58,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:48:58,032 INFO L225 Difference]: With dead ends: 7347 [2023-12-24 15:48:58,032 INFO L226 Difference]: Without dead ends: 4361 [2023-12-24 15:48:58,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2023-12-24 15:48:58,035 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 360 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-24 15:48:58,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1349 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 706 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2023-12-24 15:48:58,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4361 states. [2023-12-24 15:48:58,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4361 to 3529. [2023-12-24 15:48:58,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3529 states, 3346 states have (on average 1.3290496114763897) internal successors, (4447), 3354 states have internal predecessors, (4447), 122 states have call successors, (122), 60 states have call predecessors, (122), 60 states have return successors, (122), 114 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 15:48:58,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 4691 transitions. [2023-12-24 15:48:58,267 INFO L78 Accepts]: Start accepts. Automaton has 3529 states and 4691 transitions. Word has length 147 [2023-12-24 15:48:58,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:48:58,267 INFO L495 AbstractCegarLoop]: Abstraction has 3529 states and 4691 transitions. [2023-12-24 15:48:58,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:48:58,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3529 states and 4691 transitions. [2023-12-24 15:48:58,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 15:48:58,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:48:58,269 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:48:58,275 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 (42)] Ended with exit code 0 [2023-12-24 15:48:58,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:48:58,475 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:48:58,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:48:58,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1171364920, now seen corresponding path program 1 times [2023-12-24 15:48:58,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:48:58,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049812085] [2023-12-24 15:48:58,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:48:58,476 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:48:58,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:48:58,477 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:48:58,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-12-24 15:48:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:48:58,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 15:48:58,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:48:58,847 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:48:58,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:48:58,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:48:58,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049812085] [2023-12-24 15:48:58,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049812085] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:48:58,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:48:58,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 15:48:58,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35689175] [2023-12-24 15:48:58,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:48:58,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 15:48:58,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:48:58,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 15:48:58,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:48:58,849 INFO L87 Difference]: Start difference. First operand 3529 states and 4691 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:48:59,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:48:59,666 INFO L93 Difference]: Finished difference Result 7855 states and 10331 transitions. [2023-12-24 15:48:59,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 15:48:59,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 147 [2023-12-24 15:48:59,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:48:59,693 INFO L225 Difference]: With dead ends: 7855 [2023-12-24 15:48:59,693 INFO L226 Difference]: Without dead ends: 4781 [2023-12-24 15:48:59,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-24 15:48:59,696 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 136 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 15:48:59,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 923 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 15:48:59,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4781 states. [2023-12-24 15:48:59,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4781 to 3697. [2023-12-24 15:48:59,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 3514 states have (on average 1.332100170745589) internal successors, (4681), 3522 states have internal predecessors, (4681), 122 states have call successors, (122), 60 states have call predecessors, (122), 60 states have return successors, (122), 114 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 15:48:59,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 4925 transitions. [2023-12-24 15:48:59,936 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 4925 transitions. Word has length 147 [2023-12-24 15:48:59,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:48:59,936 INFO L495 AbstractCegarLoop]: Abstraction has 3697 states and 4925 transitions. [2023-12-24 15:48:59,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:48:59,936 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 4925 transitions. [2023-12-24 15:48:59,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 15:48:59,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:48:59,938 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:48:59,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2023-12-24 15:49:00,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:49:00,144 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:49:00,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:49:00,144 INFO L85 PathProgramCache]: Analyzing trace with hash -9346307, now seen corresponding path program 1 times [2023-12-24 15:49:00,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:49:00,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702818092] [2023-12-24 15:49:00,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:49:00,145 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:49:00,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:49:00,146 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:49:00,183 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 (44)] Waiting until timeout for monitored process [2023-12-24 15:49:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:49:00,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 15:49:00,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:49:01,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:49:01,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:49:02,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 15:49:02,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 15:49:02,706 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 27 treesize of output 11 [2023-12-24 15:49:03,037 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 27 treesize of output 11 [2023-12-24 15:49:03,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 15:49:03,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2023-12-24 15:49:03,507 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 [2023-12-24 15:49:03,602 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:49:03,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2023-12-24 15:49:03,657 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 57 proven. 350 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-12-24 15:49:03,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:49:03,937 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:49:03,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:49:03,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702818092] [2023-12-24 15:49:03,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702818092] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:49:03,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:49:03,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 20 [2023-12-24 15:49:03,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437252536] [2023-12-24 15:49:03,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:49:03,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 15:49:03,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:49:03,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 15:49:03,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-12-24 15:49:03,939 INFO L87 Difference]: Start difference. First operand 3697 states and 4925 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:49:05,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:49:05,013 INFO L93 Difference]: Finished difference Result 6457 states and 8669 transitions. [2023-12-24 15:49:05,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 15:49:05,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 147 [2023-12-24 15:49:05,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:49:05,018 INFO L225 Difference]: With dead ends: 6457 [2023-12-24 15:49:05,019 INFO L226 Difference]: Without dead ends: 3785 [2023-12-24 15:49:05,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2023-12-24 15:49:05,021 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 275 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 15:49:05,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 705 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 15:49:05,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3785 states. [2023-12-24 15:49:05,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3785 to 3609. [2023-12-24 15:49:05,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 3426 states have (on average 1.327203736135435) internal successors, (4547), 3434 states have internal predecessors, (4547), 122 states have call successors, (122), 60 states have call predecessors, (122), 60 states have return successors, (122), 114 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 15:49:05,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 4791 transitions. [2023-12-24 15:49:05,219 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 4791 transitions. Word has length 147 [2023-12-24 15:49:05,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:49:05,219 INFO L495 AbstractCegarLoop]: Abstraction has 3609 states and 4791 transitions. [2023-12-24 15:49:05,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:49:05,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 4791 transitions. [2023-12-24 15:49:05,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 15:49:05,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:49:05,221 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:49:05,230 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 (44)] Forceful destruction successful, exit code 0 [2023-12-24 15:49:05,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:49:05,427 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:49:05,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:49:05,428 INFO L85 PathProgramCache]: Analyzing trace with hash -518819397, now seen corresponding path program 1 times [2023-12-24 15:49:05,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:49:05,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568703023] [2023-12-24 15:49:05,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:49:05,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:49:05,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:49:05,429 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:49:05,465 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 (45)] Waiting until timeout for monitored process [2023-12-24 15:49:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:49:05,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-24 15:49:05,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:49:07,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:49:07,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:49:08,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 15:49:08,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 15:49:08,788 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 27 treesize of output 11 [2023-12-24 15:49:09,244 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 27 treesize of output 11 [2023-12-24 15:49:09,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2023-12-24 15:49:09,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 51 [2023-12-24 15:49:10,151 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 [2023-12-24 15:49:10,465 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 57 proven. 350 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-12-24 15:49:10,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:49:11,161 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:49:11,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:49:11,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568703023] [2023-12-24 15:49:11,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568703023] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:49:11,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:49:11,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 24 [2023-12-24 15:49:11,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553201387] [2023-12-24 15:49:11,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:49:11,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 15:49:11,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:49:11,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 15:49:11,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2023-12-24 15:49:11,163 INFO L87 Difference]: Start difference. First operand 3609 states and 4791 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:49:14,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:49:14,548 INFO L93 Difference]: Finished difference Result 7347 states and 9755 transitions. [2023-12-24 15:49:14,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 15:49:14,550 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 147 [2023-12-24 15:49:14,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:49:14,554 INFO L225 Difference]: With dead ends: 7347 [2023-12-24 15:49:14,554 INFO L226 Difference]: Without dead ends: 4763 [2023-12-24 15:49:14,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2023-12-24 15:49:14,556 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 439 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-24 15:49:14,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 1420 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-24 15:49:14,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4763 states. [2023-12-24 15:49:14,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4763 to 3609. [2023-12-24 15:49:14,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 3426 states have (on average 1.3260361938120258) internal successors, (4543), 3434 states have internal predecessors, (4543), 122 states have call successors, (122), 60 states have call predecessors, (122), 60 states have return successors, (122), 114 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 15:49:14,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 4787 transitions. [2023-12-24 15:49:14,771 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 4787 transitions. Word has length 147 [2023-12-24 15:49:14,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:49:14,771 INFO L495 AbstractCegarLoop]: Abstraction has 3609 states and 4787 transitions. [2023-12-24 15:49:14,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:49:14,771 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 4787 transitions. [2023-12-24 15:49:14,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 15:49:14,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:49:14,773 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:49:14,779 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 (45)] Forceful destruction successful, exit code 0 [2023-12-24 15:49:14,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:49:14,979 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:49:14,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:49:14,979 INFO L85 PathProgramCache]: Analyzing trace with hash -362172035, now seen corresponding path program 1 times [2023-12-24 15:49:14,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:49:14,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579487777] [2023-12-24 15:49:14,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:49:14,980 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:49:14,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:49:14,981 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:49:14,983 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 (46)] Waiting until timeout for monitored process [2023-12-24 15:49:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:49:15,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-24 15:49:15,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:49:16,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:49:16,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:49:17,496 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 17 treesize of output 17 [2023-12-24 15:49:17,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 46 [2023-12-24 15:49:18,533 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 15:49:18,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:49:19,540 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:49:19,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:49:19,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579487777] [2023-12-24 15:49:19,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579487777] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:49:19,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:49:19,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [15] total 31 [2023-12-24 15:49:19,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678385365] [2023-12-24 15:49:19,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:49:19,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-24 15:49:19,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:49:19,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-24 15:49:19,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=742, Unknown=0, NotChecked=0, Total=930 [2023-12-24 15:49:19,543 INFO L87 Difference]: Start difference. First operand 3609 states and 4787 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:49:24,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:49:24,637 INFO L93 Difference]: Finished difference Result 7805 states and 10258 transitions. [2023-12-24 15:49:24,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-24 15:49:24,638 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 147 [2023-12-24 15:49:24,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:49:24,643 INFO L225 Difference]: With dead ends: 7805 [2023-12-24 15:49:24,643 INFO L226 Difference]: Without dead ends: 5221 [2023-12-24 15:49:24,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=816, Invalid=3606, Unknown=0, NotChecked=0, Total=4422 [2023-12-24 15:49:24,646 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 1239 mSDsluCounter, 2494 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-24 15:49:24,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 2727 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-24 15:49:24,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5221 states. [2023-12-24 15:49:24,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5221 to 2803. [2023-12-24 15:49:24,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2803 states, 2650 states have (on average 1.3271698113207546) internal successors, (3517), 2652 states have internal predecessors, (3517), 98 states have call successors, (98), 54 states have call predecessors, (98), 54 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-24 15:49:24,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 3713 transitions. [2023-12-24 15:49:24,847 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 3713 transitions. Word has length 147 [2023-12-24 15:49:24,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:49:24,847 INFO L495 AbstractCegarLoop]: Abstraction has 2803 states and 3713 transitions. [2023-12-24 15:49:24,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:49:24,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 3713 transitions. [2023-12-24 15:49:24,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 15:49:24,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:49:24,849 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:49:24,855 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 (46)] Ended with exit code 0 [2023-12-24 15:49:25,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:49:25,056 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:49:25,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:49:25,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1383240389, now seen corresponding path program 1 times [2023-12-24 15:49:25,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:49:25,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092287732] [2023-12-24 15:49:25,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:49:25,057 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:49:25,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:49:25,058 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:49:25,096 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 (47)] Waiting until timeout for monitored process [2023-12-24 15:49:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:49:25,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 15:49:25,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:49:25,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:49:26,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:49:26,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 15:49:26,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2023-12-24 15:49:27,244 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:49:27,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 26 [2023-12-24 15:49:27,314 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 15:49:27,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:49:27,578 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:49:27,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:49:27,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092287732] [2023-12-24 15:49:27,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092287732] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:49:27,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:49:27,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 21 [2023-12-24 15:49:27,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099465797] [2023-12-24 15:49:27,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:49:27,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 15:49:27,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:49:27,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 15:49:27,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2023-12-24 15:49:27,579 INFO L87 Difference]: Start difference. First operand 2803 states and 3713 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:49:29,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:49:29,139 INFO L93 Difference]: Finished difference Result 5977 states and 7920 transitions. [2023-12-24 15:49:29,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 15:49:29,140 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 147 [2023-12-24 15:49:29,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:49:29,143 INFO L225 Difference]: With dead ends: 5977 [2023-12-24 15:49:29,143 INFO L226 Difference]: Without dead ends: 4193 [2023-12-24 15:49:29,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=226, Invalid=1106, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 15:49:29,145 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 403 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 2229 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 15:49:29,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 2229 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 15:49:29,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4193 states. [2023-12-24 15:49:29,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4193 to 2953. [2023-12-24 15:49:29,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2953 states, 2800 states have (on average 1.335357142857143) internal successors, (3739), 2802 states have internal predecessors, (3739), 98 states have call successors, (98), 54 states have call predecessors, (98), 54 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-24 15:49:29,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2953 states to 2953 states and 3935 transitions. [2023-12-24 15:49:29,313 INFO L78 Accepts]: Start accepts. Automaton has 2953 states and 3935 transitions. Word has length 147 [2023-12-24 15:49:29,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:49:29,314 INFO L495 AbstractCegarLoop]: Abstraction has 2953 states and 3935 transitions. [2023-12-24 15:49:29,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:49:29,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2953 states and 3935 transitions. [2023-12-24 15:49:29,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 15:49:29,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:49:29,315 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:49:29,324 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 (47)] Forceful destruction successful, exit code 0 [2023-12-24 15:49:29,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:49:29,525 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:49:29,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:49:29,525 INFO L85 PathProgramCache]: Analyzing trace with hash -339539781, now seen corresponding path program 1 times [2023-12-24 15:49:29,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:49:29,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168503550] [2023-12-24 15:49:29,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:49:29,526 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:49:29,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:49:29,527 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:49:29,531 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 (48)] Waiting until timeout for monitored process [2023-12-24 15:49:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:49:29,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-24 15:49:29,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:49:30,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:49:30,847 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 12 treesize of output 8 [2023-12-24 15:49:31,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2023-12-24 15:49:32,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 51 [2023-12-24 15:49:33,381 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 15:49:33,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:49:34,154 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:49:34,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:49:34,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168503550] [2023-12-24 15:49:34,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168503550] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:49:34,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:49:34,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 27 [2023-12-24 15:49:34,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8672866] [2023-12-24 15:49:34,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:49:34,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 15:49:34,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:49:34,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 15:49:34,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2023-12-24 15:49:34,156 INFO L87 Difference]: Start difference. First operand 2953 states and 3935 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:49:37,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:49:37,339 INFO L93 Difference]: Finished difference Result 6449 states and 8570 transitions. [2023-12-24 15:49:37,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 15:49:37,340 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 147 [2023-12-24 15:49:37,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:49:37,344 INFO L225 Difference]: With dead ends: 6449 [2023-12-24 15:49:37,344 INFO L226 Difference]: Without dead ends: 4521 [2023-12-24 15:49:37,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=407, Invalid=1075, Unknown=0, NotChecked=0, Total=1482 [2023-12-24 15:49:37,348 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 824 mSDsluCounter, 1862 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:49:37,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 2085 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-24 15:49:37,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2023-12-24 15:49:37,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 2983. [2023-12-24 15:49:37,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2983 states, 2830 states have (on average 1.3360424028268552) internal successors, (3781), 2832 states have internal predecessors, (3781), 98 states have call successors, (98), 54 states have call predecessors, (98), 54 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-24 15:49:37,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2983 states to 2983 states and 3977 transitions. [2023-12-24 15:49:37,578 INFO L78 Accepts]: Start accepts. Automaton has 2983 states and 3977 transitions. Word has length 147 [2023-12-24 15:49:37,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:49:37,578 INFO L495 AbstractCegarLoop]: Abstraction has 2983 states and 3977 transitions. [2023-12-24 15:49:37,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:49:37,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2983 states and 3977 transitions. [2023-12-24 15:49:37,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 15:49:37,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:49:37,580 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:49:37,589 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 (48)] Forceful destruction successful, exit code 0 [2023-12-24 15:49:37,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:49:37,788 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:49:37,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:49:37,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1360608135, now seen corresponding path program 1 times [2023-12-24 15:49:37,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:49:37,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233280919] [2023-12-24 15:49:37,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:49:37,788 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:49:37,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:49:37,790 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:49:37,791 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 (49)] Waiting until timeout for monitored process [2023-12-24 15:49:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:49:38,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 15:49:38,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:49:38,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:49:38,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:49:39,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 15:49:39,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2023-12-24 15:49:40,088 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:49:40,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 27 [2023-12-24 15:49:40,158 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 15:49:40,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:49:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:49:40,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:49:40,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233280919] [2023-12-24 15:49:40,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233280919] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:49:40,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:49:40,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 21 [2023-12-24 15:49:40,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817011830] [2023-12-24 15:49:40,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:49:40,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 15:49:40,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:49:40,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 15:49:40,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2023-12-24 15:49:40,376 INFO L87 Difference]: Start difference. First operand 2983 states and 3977 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:49:41,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:49:41,837 INFO L93 Difference]: Finished difference Result 6303 states and 8394 transitions. [2023-12-24 15:49:41,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 15:49:41,838 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 147 [2023-12-24 15:49:41,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:49:41,842 INFO L225 Difference]: With dead ends: 6303 [2023-12-24 15:49:41,842 INFO L226 Difference]: Without dead ends: 4345 [2023-12-24 15:49:41,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=226, Invalid=1106, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 15:49:41,845 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 440 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 2031 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 15:49:41,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 2031 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 15:49:41,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4345 states. [2023-12-24 15:49:42,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4345 to 3051. [2023-12-24 15:49:42,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3051 states, 2898 states have (on average 1.3440303657694963) internal successors, (3895), 2900 states have internal predecessors, (3895), 98 states have call successors, (98), 54 states have call predecessors, (98), 54 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-24 15:49:42,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3051 states to 3051 states and 4091 transitions. [2023-12-24 15:49:42,035 INFO L78 Accepts]: Start accepts. Automaton has 3051 states and 4091 transitions. Word has length 147 [2023-12-24 15:49:42,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:49:42,035 INFO L495 AbstractCegarLoop]: Abstraction has 3051 states and 4091 transitions. [2023-12-24 15:49:42,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:49:42,036 INFO L276 IsEmpty]: Start isEmpty. Operand 3051 states and 4091 transitions. [2023-12-24 15:49:42,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 15:49:42,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:49:42,037 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:49:42,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2023-12-24 15:49:42,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:49:42,244 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:49:42,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:49:42,244 INFO L85 PathProgramCache]: Analyzing trace with hash 860742909, now seen corresponding path program 1 times [2023-12-24 15:49:42,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:49:42,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045070484] [2023-12-24 15:49:42,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:49:42,245 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:49:42,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:49:42,246 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:49:42,280 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 (50)] Waiting until timeout for monitored process [2023-12-24 15:49:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:49:42,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 15:49:42,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:49:43,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:49:43,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-24 15:49:44,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-24 15:49:45,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2023-12-24 15:49:45,501 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:49:45,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 33 [2023-12-24 15:49:45,578 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 36 proven. 283 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-12-24 15:49:45,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:49:46,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:49:46,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045070484] [2023-12-24 15:49:46,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045070484] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:49:46,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [497116180] [2023-12-24 15:49:46,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:49:46,639 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:49:46,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:49:46,641 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:49:46,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (51)] Waiting until timeout for monitored process [2023-12-24 15:49:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:49:47,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 15:49:47,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:49:48,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:49:49,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2023-12-24 15:49:50,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 28 [2023-12-24 15:49:51,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 46 [2023-12-24 15:49:51,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 30 [2023-12-24 15:49:53,417 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 41 proven. 283 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 15:49:53,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:49:54,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [497116180] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:49:54,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:49:54,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 28 [2023-12-24 15:49:54,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942722287] [2023-12-24 15:49:54,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:49:54,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-24 15:49:54,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:49:54,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-24 15:49:54,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1132, Unknown=1, NotChecked=0, Total=1332 [2023-12-24 15:49:54,359 INFO L87 Difference]: Start difference. First operand 3051 states and 4091 transitions. Second operand has 29 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 8 states have call successors, (34), 7 states have call predecessors, (34), 8 states have return successors, (34), 6 states have call predecessors, (34), 8 states have call successors, (34) [2023-12-24 15:50:00,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:50:00,489 INFO L93 Difference]: Finished difference Result 5685 states and 7606 transitions. [2023-12-24 15:50:00,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-24 15:50:00,492 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 8 states have call successors, (34), 7 states have call predecessors, (34), 8 states have return successors, (34), 6 states have call predecessors, (34), 8 states have call successors, (34) Word has length 147 [2023-12-24 15:50:00,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:50:00,495 INFO L225 Difference]: With dead ends: 5685 [2023-12-24 15:50:00,496 INFO L226 Difference]: Without dead ends: 3653 [2023-12-24 15:50:00,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 340 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=672, Invalid=2633, Unknown=1, NotChecked=0, Total=3306 [2023-12-24 15:50:00,498 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 943 mSDsluCounter, 2584 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 2817 SdHoareTripleChecker+Invalid, 2258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:50:00,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 2817 Invalid, 2258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-24 15:50:00,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3653 states. [2023-12-24 15:50:00,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3653 to 3083. [2023-12-24 15:50:00,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3083 states, 2922 states have (on average 1.33709787816564) internal successors, (3907), 2924 states have internal predecessors, (3907), 98 states have call successors, (98), 62 states have call predecessors, (98), 62 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-24 15:50:00,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3083 states to 3083 states and 4103 transitions. [2023-12-24 15:50:00,741 INFO L78 Accepts]: Start accepts. Automaton has 3083 states and 4103 transitions. Word has length 147 [2023-12-24 15:50:00,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:50:00,741 INFO L495 AbstractCegarLoop]: Abstraction has 3083 states and 4103 transitions. [2023-12-24 15:50:00,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 8 states have call successors, (34), 7 states have call predecessors, (34), 8 states have return successors, (34), 6 states have call predecessors, (34), 8 states have call successors, (34) [2023-12-24 15:50:00,741 INFO L276 IsEmpty]: Start isEmpty. Operand 3083 states and 4103 transitions. [2023-12-24 15:50:00,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 15:50:00,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:50:00,743 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:50:00,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (51)] Forceful destruction successful, exit code 0 [2023-12-24 15:50:00,960 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 (50)] Forceful destruction successful, exit code 0 [2023-12-24 15:50:01,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:50:01,154 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:50:01,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:50:01,155 INFO L85 PathProgramCache]: Analyzing trace with hash 883375163, now seen corresponding path program 1 times [2023-12-24 15:50:01,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:50:01,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450866235] [2023-12-24 15:50:01,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:50:01,155 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:50:01,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:50:01,157 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:50:01,192 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 (52)] Waiting until timeout for monitored process [2023-12-24 15:50:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:50:01,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 15:50:01,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:50:02,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:50:02,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:50:03,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:50:03,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2023-12-24 15:50:04,070 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:50:04,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 29 [2023-12-24 15:50:04,129 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 15:50:04,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:50:08,964 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:50:08,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450866235] [2023-12-24 15:50:08,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450866235] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:50:08,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [471538101] [2023-12-24 15:50:08,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:50:08,965 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:50:08,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:50:08,970 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:50:08,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (53)] Waiting until timeout for monitored process [2023-12-24 15:50:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:50:09,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 15:50:09,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:50:10,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:50:11,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 15:50:11,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 15:50:11,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-24 15:50:11,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 15:50:11,727 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 173 proven. 132 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-12-24 15:50:11,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:50:12,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 15:50:12,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [471538101] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:50:12,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:50:12,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 22 [2023-12-24 15:50:12,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116653786] [2023-12-24 15:50:12,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:50:12,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-24 15:50:12,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:50:12,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-24 15:50:12,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=992, Unknown=1, NotChecked=0, Total=1122 [2023-12-24 15:50:12,265 INFO L87 Difference]: Start difference. First operand 3083 states and 4103 transitions. Second operand has 23 states, 21 states have (on average 6.190476190476191) internal successors, (130), 21 states have internal predecessors, (130), 7 states have call successors, (34), 6 states have call predecessors, (34), 7 states have return successors, (34), 6 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-24 15:50:19,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:50:19,957 INFO L93 Difference]: Finished difference Result 5319 states and 7046 transitions. [2023-12-24 15:50:19,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-24 15:50:19,957 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 6.190476190476191) internal successors, (130), 21 states have internal predecessors, (130), 7 states have call successors, (34), 6 states have call predecessors, (34), 7 states have return successors, (34), 6 states have call predecessors, (34), 7 states have call successors, (34) Word has length 147 [2023-12-24 15:50:19,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:50:19,961 INFO L225 Difference]: With dead ends: 5319 [2023-12-24 15:50:19,961 INFO L226 Difference]: Without dead ends: 3187 [2023-12-24 15:50:19,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=704, Invalid=3585, Unknown=1, NotChecked=0, Total=4290 [2023-12-24 15:50:19,967 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 818 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 1965 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 2115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-24 15:50:19,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 1888 Invalid, 2115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1965 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-24 15:50:19,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3187 states. [2023-12-24 15:50:20,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3187 to 2665. [2023-12-24 15:50:20,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2665 states, 2498 states have (on average 1.3086469175340272) internal successors, (3269), 2500 states have internal predecessors, (3269), 98 states have call successors, (98), 68 states have call predecessors, (98), 68 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-24 15:50:20,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 3465 transitions. [2023-12-24 15:50:20,191 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 3465 transitions. Word has length 147 [2023-12-24 15:50:20,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:50:20,191 INFO L495 AbstractCegarLoop]: Abstraction has 2665 states and 3465 transitions. [2023-12-24 15:50:20,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 6.190476190476191) internal successors, (130), 21 states have internal predecessors, (130), 7 states have call successors, (34), 6 states have call predecessors, (34), 7 states have return successors, (34), 6 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-24 15:50:20,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 3465 transitions. [2023-12-24 15:50:20,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 15:50:20,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:50:20,193 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:50:20,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (53)] Ended with exit code 0 [2023-12-24 15:50:20,405 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 (52)] Forceful destruction successful, exit code 0 [2023-12-24 15:50:20,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:50:20,606 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:50:20,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:50:20,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1726320882, now seen corresponding path program 1 times [2023-12-24 15:50:20,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:50:20,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731776625] [2023-12-24 15:50:20,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:50:20,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:50:20,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:50:20,608 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:50:20,609 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 (54)] Waiting until timeout for monitored process [2023-12-24 15:50:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:50:20,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 15:50:20,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:50:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-24 15:50:20,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:50:20,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:50:20,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731776625] [2023-12-24 15:50:20,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1731776625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:50:20,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:50:20,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 15:50:20,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163348814] [2023-12-24 15:50:20,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:50:20,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 15:50:20,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:50:20,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 15:50:20,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 15:50:20,910 INFO L87 Difference]: Start difference. First operand 2665 states and 3465 transitions. Second operand has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-24 15:50:21,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:50:21,277 INFO L93 Difference]: Finished difference Result 5153 states and 6718 transitions. [2023-12-24 15:50:21,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 15:50:21,278 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 147 [2023-12-24 15:50:21,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:50:21,282 INFO L225 Difference]: With dead ends: 5153 [2023-12-24 15:50:21,282 INFO L226 Difference]: Without dead ends: 2687 [2023-12-24 15:50:21,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 15:50:21,296 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 7 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:50:21,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 582 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:50:21,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2023-12-24 15:50:21,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 2665. [2023-12-24 15:50:21,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2665 states, 2498 states have (on average 1.3074459567654124) internal successors, (3266), 2500 states have internal predecessors, (3266), 98 states have call successors, (98), 68 states have call predecessors, (98), 68 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-24 15:50:21,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 3462 transitions. [2023-12-24 15:50:21,553 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 3462 transitions. Word has length 147 [2023-12-24 15:50:21,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:50:21,553 INFO L495 AbstractCegarLoop]: Abstraction has 2665 states and 3462 transitions. [2023-12-24 15:50:21,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-24 15:50:21,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 3462 transitions. [2023-12-24 15:50:21,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-24 15:50:21,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:50:21,555 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:50:21,561 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 (54)] Forceful destruction successful, exit code 0 [2023-12-24 15:50:21,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:50:21,761 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:50:21,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:50:21,761 INFO L85 PathProgramCache]: Analyzing trace with hash 116154832, now seen corresponding path program 1 times [2023-12-24 15:50:21,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:50:21,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045498810] [2023-12-24 15:50:21,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:50:21,762 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:50:21,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:50:21,763 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:50:21,764 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 (55)] Waiting until timeout for monitored process [2023-12-24 15:50:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:50:22,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 15:50:22,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:50:22,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 15:50:24,211 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 101 treesize of output 57 [2023-12-24 15:50:24,719 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:50:24,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 75 [2023-12-24 15:50:24,768 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 12 proven. 244 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-24 15:50:24,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:50:25,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:50:25,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045498810] [2023-12-24 15:50:25,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045498810] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:50:25,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1472354325] [2023-12-24 15:50:25,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:50:25,511 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:50:25,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:50:25,512 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:50:25,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (56)] Waiting until timeout for monitored process [2023-12-24 15:50:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:50:26,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 15:50:26,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:50:26,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:50:29,034 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 101 treesize of output 57 [2023-12-24 15:50:29,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 75 [2023-12-24 15:50:29,682 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 12 proven. 244 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-24 15:50:29,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:50:30,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1472354325] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:50:30,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:50:30,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2023-12-24 15:50:30,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344540702] [2023-12-24 15:50:30,391 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:50:30,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-24 15:50:30,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:50:30,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-24 15:50:30,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2023-12-24 15:50:30,392 INFO L87 Difference]: Start difference. First operand 2665 states and 3462 transitions. Second operand has 22 states, 20 states have (on average 6.85) internal successors, (137), 19 states have internal predecessors, (137), 6 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 4 states have call predecessors, (34), 6 states have call successors, (34) [2023-12-24 15:50:32,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:50:32,239 INFO L93 Difference]: Finished difference Result 4975 states and 6497 transitions. [2023-12-24 15:50:32,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 15:50:32,239 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 6.85) internal successors, (137), 19 states have internal predecessors, (137), 6 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 4 states have call predecessors, (34), 6 states have call successors, (34) Word has length 147 [2023-12-24 15:50:32,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:50:32,242 INFO L225 Difference]: With dead ends: 4975 [2023-12-24 15:50:32,242 INFO L226 Difference]: Without dead ends: 2693 [2023-12-24 15:50:32,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 348 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=334, Invalid=1226, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 15:50:32,245 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 716 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 15:50:32,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 1299 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 15:50:32,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2023-12-24 15:50:32,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 1358. [2023-12-24 15:50:32,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1270 states have (on average 1.3039370078740158) internal successors, (1656), 1270 states have internal predecessors, (1656), 51 states have call successors, (51), 36 states have call predecessors, (51), 36 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 15:50:32,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1758 transitions. [2023-12-24 15:50:32,374 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1758 transitions. Word has length 147 [2023-12-24 15:50:32,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:50:32,374 INFO L495 AbstractCegarLoop]: Abstraction has 1358 states and 1758 transitions. [2023-12-24 15:50:32,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 6.85) internal successors, (137), 19 states have internal predecessors, (137), 6 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 4 states have call predecessors, (34), 6 states have call successors, (34) [2023-12-24 15:50:32,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1758 transitions. [2023-12-24 15:50:32,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-24 15:50:32,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:50:32,375 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:50:32,384 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 (55)] Forceful destruction successful, exit code 0 [2023-12-24 15:50:32,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (56)] Forceful destruction successful, exit code 0 [2023-12-24 15:50:32,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:50:32,787 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:50:32,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:50:32,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1804954877, now seen corresponding path program 1 times [2023-12-24 15:50:32,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:50:32,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582621384] [2023-12-24 15:50:32,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:50:32,788 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:50:32,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:50:32,803 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:50:32,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2023-12-24 15:50:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:50:33,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 15:50:33,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:50:34,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:50:35,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 27 [2023-12-24 15:50:35,586 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:50:35,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 18 [2023-12-24 15:50:35,681 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-24 15:50:35,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:50:37,967 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 15:50:37,968 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 7582 treesize of output 6533 [2023-12-24 15:50:42,048 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:50:42,049 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:50:42,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582621384] [2023-12-24 15:50:42,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582621384] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:50:42,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:50:42,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 19 [2023-12-24 15:50:42,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817353039] [2023-12-24 15:50:42,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:50:42,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 15:50:42,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:50:42,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 15:50:42,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-12-24 15:50:42,050 INFO L87 Difference]: Start difference. First operand 1358 states and 1758 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 15:50:45,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:50:45,151 INFO L93 Difference]: Finished difference Result 3074 states and 3963 transitions. [2023-12-24 15:50:45,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 15:50:45,153 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 149 [2023-12-24 15:50:45,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:50:45,155 INFO L225 Difference]: With dead ends: 3074 [2023-12-24 15:50:45,155 INFO L226 Difference]: Without dead ends: 1920 [2023-12-24 15:50:45,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2023-12-24 15:50:45,181 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 322 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 15:50:45,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 1641 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 15:50:45,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2023-12-24 15:50:45,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1652. [2023-12-24 15:50:45,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1652 states, 1564 states have (on average 1.3056265984654731) internal successors, (2042), 1564 states have internal predecessors, (2042), 51 states have call successors, (51), 36 states have call predecessors, (51), 36 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 15:50:45,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 2144 transitions. [2023-12-24 15:50:45,341 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 2144 transitions. Word has length 149 [2023-12-24 15:50:45,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:50:45,341 INFO L495 AbstractCegarLoop]: Abstraction has 1652 states and 2144 transitions. [2023-12-24 15:50:45,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 15:50:45,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 2144 transitions. [2023-12-24 15:50:45,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-24 15:50:45,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:50:45,342 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:50:45,366 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 (57)] Forceful destruction successful, exit code 0 [2023-12-24 15:50:45,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:50:45,549 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:50:45,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:50:45,549 INFO L85 PathProgramCache]: Analyzing trace with hash 793837627, now seen corresponding path program 1 times [2023-12-24 15:50:45,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:50:45,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105691474] [2023-12-24 15:50:45,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:50:45,550 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:50:45,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:50:45,551 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:50:45,552 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 (58)] Waiting until timeout for monitored process [2023-12-24 15:50:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:50:45,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 15:50:45,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:50:47,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:50:47,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 15:50:48,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2023-12-24 15:50:49,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 24 [2023-12-24 15:50:49,463 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:50:49,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 16 [2023-12-24 15:50:49,502 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 182 proven. 126 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-12-24 15:50:49,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:50:54,235 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:50:54,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105691474] [2023-12-24 15:50:54,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105691474] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:50:54,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1133769269] [2023-12-24 15:50:54,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:50:54,235 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:50:54,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:50:54,236 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:50:54,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (59)] Waiting until timeout for monitored process [2023-12-24 15:50:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:50:54,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 15:50:54,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:50:57,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:50:57,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:50:57,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:50:58,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 18 [2023-12-24 15:50:58,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2023-12-24 15:50:58,668 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-24 15:50:58,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:50:58,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1133769269] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:50:58,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:50:58,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 7] total 25 [2023-12-24 15:50:58,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870269861] [2023-12-24 15:50:58,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:50:58,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-24 15:50:58,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:50:58,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-24 15:50:58,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=740, Unknown=1, NotChecked=0, Total=870 [2023-12-24 15:50:58,954 INFO L87 Difference]: Start difference. First operand 1652 states and 2144 transitions. Second operand has 26 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 8 states have call successors, (34), 6 states have call predecessors, (34), 8 states have return successors, (34), 7 states have call predecessors, (34), 8 states have call successors, (34) [2023-12-24 15:51:03,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:51:03,151 INFO L93 Difference]: Finished difference Result 3370 states and 4348 transitions. [2023-12-24 15:51:03,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-24 15:51:03,152 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 8 states have call successors, (34), 6 states have call predecessors, (34), 8 states have return successors, (34), 7 states have call predecessors, (34), 8 states have call successors, (34) Word has length 149 [2023-12-24 15:51:03,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:51:03,154 INFO L225 Difference]: With dead ends: 3370 [2023-12-24 15:51:03,154 INFO L226 Difference]: Without dead ends: 1940 [2023-12-24 15:51:03,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=550, Invalid=2529, Unknown=1, NotChecked=0, Total=3080 [2023-12-24 15:51:03,156 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 531 mSDsluCounter, 2057 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-24 15:51:03,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 2263 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-24 15:51:03,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2023-12-24 15:51:03,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1652. [2023-12-24 15:51:03,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1652 states, 1564 states have (on average 1.3037084398976981) internal successors, (2039), 1564 states have internal predecessors, (2039), 51 states have call successors, (51), 36 states have call predecessors, (51), 36 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 15:51:03,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 2141 transitions. [2023-12-24 15:51:03,314 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 2141 transitions. Word has length 149 [2023-12-24 15:51:03,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:51:03,314 INFO L495 AbstractCegarLoop]: Abstraction has 1652 states and 2141 transitions. [2023-12-24 15:51:03,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 8 states have call successors, (34), 6 states have call predecessors, (34), 8 states have return successors, (34), 7 states have call predecessors, (34), 8 states have call successors, (34) [2023-12-24 15:51:03,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 2141 transitions. [2023-12-24 15:51:03,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-24 15:51:03,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:51:03,316 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:51:03,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (59)] Ended with exit code 0 [2023-12-24 15:51:03,532 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 (58)] Ended with exit code 0 [2023-12-24 15:51:03,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:51:03,732 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:51:03,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:51:03,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1103809025, now seen corresponding path program 1 times [2023-12-24 15:51:03,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:51:03,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444278693] [2023-12-24 15:51:03,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:51:03,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:51:03,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:51:03,734 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:51:03,751 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 (60)] Waiting until timeout for monitored process [2023-12-24 15:51:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:51:04,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 15:51:04,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:51:05,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 15:51:06,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 15:51:07,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2023-12-24 15:51:08,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2023-12-24 15:51:09,363 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:51:09,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 17 [2023-12-24 15:51:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 189 proven. 120 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-24 15:51:09,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:51:10,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:51:10,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444278693] [2023-12-24 15:51:10,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444278693] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:51:10,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1588193127] [2023-12-24 15:51:10,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:51:10,365 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:51:10,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:51:10,365 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:51:10,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (61)] Waiting until timeout for monitored process [2023-12-24 15:51:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:51:11,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 15:51:11,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:51:12,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:51:13,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:51:13,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:51:14,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 19 [2023-12-24 15:51:14,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-24 15:51:14,626 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-24 15:51:14,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:51:14,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1588193127] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:51:14,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:51:14,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 7] total 29 [2023-12-24 15:51:14,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609022157] [2023-12-24 15:51:14,994 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:51:14,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-24 15:51:14,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:51:14,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-24 15:51:14,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 15:51:14,995 INFO L87 Difference]: Start difference. First operand 1652 states and 2141 transitions. Second operand has 30 states, 26 states have (on average 5.346153846153846) internal successors, (139), 25 states have internal predecessors, (139), 8 states have call successors, (34), 7 states have call predecessors, (34), 8 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2023-12-24 15:51:19,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:51:19,403 INFO L93 Difference]: Finished difference Result 3385 states and 4363 transitions. [2023-12-24 15:51:19,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-24 15:51:19,404 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 5.346153846153846) internal successors, (139), 25 states have internal predecessors, (139), 8 states have call successors, (34), 7 states have call predecessors, (34), 8 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) Word has length 149 [2023-12-24 15:51:19,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:51:19,405 INFO L225 Difference]: With dead ends: 3385 [2023-12-24 15:51:19,405 INFO L226 Difference]: Without dead ends: 1955 [2023-12-24 15:51:19,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=709, Invalid=3451, Unknown=0, NotChecked=0, Total=4160 [2023-12-24 15:51:19,407 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 709 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-24 15:51:19,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 2157 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-24 15:51:19,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1955 states. [2023-12-24 15:51:19,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1955 to 1655. [2023-12-24 15:51:19,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1567 states have (on average 1.303126994256541) internal successors, (2042), 1567 states have internal predecessors, (2042), 51 states have call successors, (51), 36 states have call predecessors, (51), 36 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 15:51:19,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2144 transitions. [2023-12-24 15:51:19,557 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2144 transitions. Word has length 149 [2023-12-24 15:51:19,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:51:19,557 INFO L495 AbstractCegarLoop]: Abstraction has 1655 states and 2144 transitions. [2023-12-24 15:51:19,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 5.346153846153846) internal successors, (139), 25 states have internal predecessors, (139), 8 states have call successors, (34), 7 states have call predecessors, (34), 8 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2023-12-24 15:51:19,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2144 transitions. [2023-12-24 15:51:19,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-24 15:51:19,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:51:19,559 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:51:19,568 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 (60)] Forceful destruction successful, exit code 0 [2023-12-24 15:51:19,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (61)] Forceful destruction successful, exit code 0 [2023-12-24 15:51:19,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:51:19,975 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:51:19,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:51:19,975 INFO L85 PathProgramCache]: Analyzing trace with hash -2114926275, now seen corresponding path program 1 times [2023-12-24 15:51:19,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:51:19,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027492608] [2023-12-24 15:51:19,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:51:19,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:51:19,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:51:19,977 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:51:19,978 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 (62)] Waiting until timeout for monitored process [2023-12-24 15:51:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:51:20,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 15:51:20,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:51:22,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:51:23,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 27 [2023-12-24 15:51:23,572 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:51:23,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 18 [2023-12-24 15:51:23,704 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-24 15:51:23,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:51:26,052 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-12-24 15:51:26,053 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 7582 treesize of output 6533 [2023-12-24 15:51:30,433 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:51:30,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:51:30,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027492608] [2023-12-24 15:51:30,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027492608] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:51:30,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:51:30,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 19 [2023-12-24 15:51:30,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731723362] [2023-12-24 15:51:30,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:51:30,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 15:51:30,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:51:30,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 15:51:30,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-12-24 15:51:30,434 INFO L87 Difference]: Start difference. First operand 1655 states and 2144 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 15:51:41,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:51:41,625 INFO L93 Difference]: Finished difference Result 3305 states and 4274 transitions. [2023-12-24 15:51:41,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 15:51:41,626 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 149 [2023-12-24 15:51:41,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:51:41,628 INFO L225 Difference]: With dead ends: 3305 [2023-12-24 15:51:41,628 INFO L226 Difference]: Without dead ends: 1872 [2023-12-24 15:51:41,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2023-12-24 15:51:41,629 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 356 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-12-24 15:51:41,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 1682 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-12-24 15:51:41,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2023-12-24 15:51:41,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1655. [2023-12-24 15:51:41,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1567 states have (on average 1.303126994256541) internal successors, (2042), 1567 states have internal predecessors, (2042), 51 states have call successors, (51), 36 states have call predecessors, (51), 36 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 15:51:41,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2144 transitions. [2023-12-24 15:51:41,799 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2144 transitions. Word has length 149 [2023-12-24 15:51:41,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:51:41,799 INFO L495 AbstractCegarLoop]: Abstraction has 1655 states and 2144 transitions. [2023-12-24 15:51:41,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 15:51:41,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2144 transitions. [2023-12-24 15:51:41,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-24 15:51:41,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:51:41,801 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:51:41,807 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 (62)] Ended with exit code 0 [2023-12-24 15:51:42,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:51:42,007 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:51:42,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:51:42,008 INFO L85 PathProgramCache]: Analyzing trace with hash -676425096, now seen corresponding path program 1 times [2023-12-24 15:51:42,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:51:42,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291066132] [2023-12-24 15:51:42,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:51:42,008 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 [2023-12-24 15:51:42,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:51:42,009 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:51:42,010 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 (63)] Waiting until timeout for monitored process [2023-12-24 15:51:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:51:42,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 15:51:42,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:51:43,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:51:43,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2023-12-24 15:51:45,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2023-12-24 15:51:45,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2023-12-24 15:51:46,027 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:51:46,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 30 [2023-12-24 15:51:46,091 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 36 proven. 283 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-12-24 15:51:46,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:51:46,464 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:51:46,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:51:46,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291066132] [2023-12-24 15:51:46,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291066132] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:51:46,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:51:46,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 19 [2023-12-24 15:51:46,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608146651] [2023-12-24 15:51:46,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:51:46,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 15:51:46,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:51:46,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 15:51:46,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2023-12-24 15:51:46,466 INFO L87 Difference]: Start difference. First operand 1655 states and 2144 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:51:47,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:51:47,754 INFO L93 Difference]: Finished difference Result 2891 states and 3763 transitions. [2023-12-24 15:51:47,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 15:51:47,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 149 [2023-12-24 15:51:47,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:51:47,757 INFO L225 Difference]: With dead ends: 2891 [2023-12-24 15:51:47,757 INFO L226 Difference]: Without dead ends: 1803 [2023-12-24 15:51:47,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2023-12-24 15:51:47,758 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 255 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 15:51:47,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 979 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 15:51:47,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2023-12-24 15:51:47,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1592. [2023-12-24 15:51:47,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1504 states have (on average 1.295877659574468) internal successors, (1949), 1504 states have internal predecessors, (1949), 51 states have call successors, (51), 36 states have call predecessors, (51), 36 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 15:51:47,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2051 transitions. [2023-12-24 15:51:47,915 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2051 transitions. Word has length 149 [2023-12-24 15:51:47,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:51:47,915 INFO L495 AbstractCegarLoop]: Abstraction has 1592 states and 2051 transitions. [2023-12-24 15:51:47,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:51:47,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2051 transitions. [2023-12-24 15:51:47,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-24 15:51:47,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:51:47,917 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:51:47,923 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 (63)] Ended with exit code 0 [2023-12-24 15:51:48,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:51:48,123 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:51:48,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:51:48,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1185898186, now seen corresponding path program 1 times [2023-12-24 15:51:48,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:51:48,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42157975] [2023-12-24 15:51:48,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:51:48,124 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:51:48,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:51:48,126 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:51:48,161 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 (64)] Waiting until timeout for monitored process [2023-12-24 15:51:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:51:48,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 15:51:48,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:51:49,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:51:50,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:51:52,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 15:51:52,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2023-12-24 15:51:53,425 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:51:53,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 34 [2023-12-24 15:51:53,522 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 15:51:53,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:51:54,151 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:51:54,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:51:54,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [42157975] [2023-12-24 15:51:54,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [42157975] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:51:54,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:51:54,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2023-12-24 15:51:54,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32461772] [2023-12-24 15:51:54,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:51:54,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 15:51:54,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:51:54,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 15:51:54,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-12-24 15:51:54,152 INFO L87 Difference]: Start difference. First operand 1592 states and 2051 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:51:56,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:51:56,721 INFO L93 Difference]: Finished difference Result 3184 states and 4105 transitions. [2023-12-24 15:51:56,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 15:51:56,722 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 149 [2023-12-24 15:51:56,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:51:56,724 INFO L225 Difference]: With dead ends: 3184 [2023-12-24 15:51:56,724 INFO L226 Difference]: Without dead ends: 2159 [2023-12-24 15:51:56,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2023-12-24 15:51:56,726 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 351 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:51:56,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1189 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-24 15:51:56,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2159 states. [2023-12-24 15:51:56,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2159 to 1592. [2023-12-24 15:51:56,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1504 states have (on average 1.2925531914893618) internal successors, (1944), 1504 states have internal predecessors, (1944), 51 states have call successors, (51), 36 states have call predecessors, (51), 36 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 15:51:56,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2046 transitions. [2023-12-24 15:51:56,896 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2046 transitions. Word has length 149 [2023-12-24 15:51:56,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:51:56,896 INFO L495 AbstractCegarLoop]: Abstraction has 1592 states and 2046 transitions. [2023-12-24 15:51:56,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:51:56,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2046 transitions. [2023-12-24 15:51:56,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 15:51:56,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:51:56,897 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:51:56,920 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 (64)] Ended with exit code 0 [2023-12-24 15:51:57,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:51:57,104 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:51:57,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:51:57,104 INFO L85 PathProgramCache]: Analyzing trace with hash 772212675, now seen corresponding path program 1 times [2023-12-24 15:51:57,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:51:57,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159419857] [2023-12-24 15:51:57,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:51:57,105 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:51:57,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:51:57,107 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:51:57,108 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 (65)] Waiting until timeout for monitored process [2023-12-24 15:51:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:51:57,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 15:51:57,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:51:57,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 15:51:57,962 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 13 proven. 207 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 15:51:57,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:51:58,142 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:51:58,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:51:58,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159419857] [2023-12-24 15:51:58,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159419857] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:51:58,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:51:58,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-24 15:51:58,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254678146] [2023-12-24 15:51:58,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:51:58,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:51:58,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:51:58,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:51:58,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-24 15:51:58,143 INFO L87 Difference]: Start difference. First operand 1592 states and 2046 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:51:58,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:51:58,417 INFO L93 Difference]: Finished difference Result 3182 states and 4112 transitions. [2023-12-24 15:51:58,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:51:58,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 150 [2023-12-24 15:51:58,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:51:58,434 INFO L225 Difference]: With dead ends: 3182 [2023-12-24 15:51:58,434 INFO L226 Difference]: Without dead ends: 2157 [2023-12-24 15:51:58,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-24 15:51:58,435 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 192 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:51:58,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 492 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:51:58,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2023-12-24 15:51:58,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 1766. [2023-12-24 15:51:58,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1766 states, 1678 states have (on average 1.2896305125148988) internal successors, (2164), 1678 states have internal predecessors, (2164), 51 states have call successors, (51), 36 states have call predecessors, (51), 36 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 15:51:58,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 2266 transitions. [2023-12-24 15:51:58,589 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 2266 transitions. Word has length 150 [2023-12-24 15:51:58,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:51:58,590 INFO L495 AbstractCegarLoop]: Abstraction has 1766 states and 2266 transitions. [2023-12-24 15:51:58,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:51:58,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 2266 transitions. [2023-12-24 15:51:58,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 15:51:58,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:51:58,591 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:51:58,598 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 (65)] Forceful destruction successful, exit code 0 [2023-12-24 15:51:58,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:51:58,796 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:51:58,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:51:58,797 INFO L85 PathProgramCache]: Analyzing trace with hash -105382358, now seen corresponding path program 1 times [2023-12-24 15:51:58,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:51:58,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249789382] [2023-12-24 15:51:58,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:51:58,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:51:58,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:51:58,800 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:51:58,800 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 (66)] Waiting until timeout for monitored process [2023-12-24 15:51:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:51:59,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 15:51:59,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:52:00,021 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:52:00,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:52:00,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:52:00,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249789382] [2023-12-24 15:52:00,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249789382] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:52:00,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:52:00,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-24 15:52:00,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191376381] [2023-12-24 15:52:00,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:52:00,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 15:52:00,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:52:00,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 15:52:00,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-24 15:52:00,023 INFO L87 Difference]: Start difference. First operand 1766 states and 2266 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:52:22,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:52:22,591 INFO L93 Difference]: Finished difference Result 3522 states and 4474 transitions. [2023-12-24 15:52:22,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-24 15:52:22,592 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 152 [2023-12-24 15:52:22,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:52:22,594 INFO L225 Difference]: With dead ends: 3522 [2023-12-24 15:52:22,594 INFO L226 Difference]: Without dead ends: 2323 [2023-12-24 15:52:22,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=377, Invalid=1025, Unknown=4, NotChecked=0, Total=1406 [2023-12-24 15:52:22,595 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 625 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-24 15:52:22,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 1172 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-24 15:52:22,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2323 states. [2023-12-24 15:52:22,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2323 to 1775. [2023-12-24 15:52:22,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1775 states, 1687 states have (on average 1.2886781268524008) internal successors, (2174), 1687 states have internal predecessors, (2174), 51 states have call successors, (51), 36 states have call predecessors, (51), 36 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 15:52:22,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 2276 transitions. [2023-12-24 15:52:22,745 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 2276 transitions. Word has length 152 [2023-12-24 15:52:22,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:52:22,745 INFO L495 AbstractCegarLoop]: Abstraction has 1775 states and 2276 transitions. [2023-12-24 15:52:22,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:52:22,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 2276 transitions. [2023-12-24 15:52:22,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 15:52:22,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:52:22,746 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:52:22,751 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 (66)] Forceful destruction successful, exit code 0 [2023-12-24 15:52:22,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:52:22,952 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:52:22,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:52:22,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1882727347, now seen corresponding path program 1 times [2023-12-24 15:52:22,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:52:22,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543334044] [2023-12-24 15:52:22,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:52:22,953 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:52:22,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:52:22,953 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:52:22,955 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 (67)] Waiting until timeout for monitored process [2023-12-24 15:52:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:52:23,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 15:52:23,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:52:23,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:52:24,156 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 [2023-12-24 15:52:24,327 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 [2023-12-24 15:52:24,431 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 [2023-12-24 15:52:24,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 15:52:24,986 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 134 proven. 126 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-12-24 15:52:24,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:52:25,113 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 23 treesize of output 15 [2023-12-24 15:52:25,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:52:25,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543334044] [2023-12-24 15:52:25,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543334044] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:52:25,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1985768044] [2023-12-24 15:52:25,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:52:25,230 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:52:25,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:52:25,232 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:52:25,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (68)] Waiting until timeout for monitored process [2023-12-24 15:52:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:52:25,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 15:52:25,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:52:26,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:52:27,321 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 [2023-12-24 15:52:27,477 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 [2023-12-24 15:52:27,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 15:52:27,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 15:52:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 134 proven. 126 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-12-24 15:52:28,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:52:28,482 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 23 treesize of output 15 [2023-12-24 15:52:28,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1985768044] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:52:28,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:52:28,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2023-12-24 15:52:28,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562741559] [2023-12-24 15:52:28,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:52:28,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 15:52:28,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:52:28,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 15:52:28,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2023-12-24 15:52:28,587 INFO L87 Difference]: Start difference. First operand 1775 states and 2276 transitions. Second operand has 18 states, 16 states have (on average 7.75) internal successors, (124), 17 states have internal predecessors, (124), 8 states have call successors, (34), 6 states have call predecessors, (34), 8 states have return successors, (34), 6 states have call predecessors, (34), 8 states have call successors, (34) [2023-12-24 15:52:33,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:52:33,094 INFO L93 Difference]: Finished difference Result 3055 states and 3946 transitions. [2023-12-24 15:52:33,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 15:52:33,095 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 7.75) internal successors, (124), 17 states have internal predecessors, (124), 8 states have call successors, (34), 6 states have call predecessors, (34), 8 states have return successors, (34), 6 states have call predecessors, (34), 8 states have call successors, (34) Word has length 152 [2023-12-24 15:52:33,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:52:33,097 INFO L225 Difference]: With dead ends: 3055 [2023-12-24 15:52:33,097 INFO L226 Difference]: Without dead ends: 1847 [2023-12-24 15:52:33,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 374 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2023-12-24 15:52:33,098 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 396 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-24 15:52:33,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 1182 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-24 15:52:33,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2023-12-24 15:52:33,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1775. [2023-12-24 15:52:33,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1775 states, 1687 states have (on average 1.2880853586247778) internal successors, (2173), 1687 states have internal predecessors, (2173), 51 states have call successors, (51), 36 states have call predecessors, (51), 36 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 15:52:33,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 2275 transitions. [2023-12-24 15:52:33,272 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 2275 transitions. Word has length 152 [2023-12-24 15:52:33,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:52:33,273 INFO L495 AbstractCegarLoop]: Abstraction has 1775 states and 2275 transitions. [2023-12-24 15:52:33,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 7.75) internal successors, (124), 17 states have internal predecessors, (124), 8 states have call successors, (34), 6 states have call predecessors, (34), 8 states have return successors, (34), 6 states have call predecessors, (34), 8 states have call successors, (34) [2023-12-24 15:52:33,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 2275 transitions. [2023-12-24 15:52:33,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 15:52:33,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:52:33,274 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:52:33,280 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 (67)] Ended with exit code 0 [2023-12-24 15:52:33,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (68)] Forceful destruction successful, exit code 0 [2023-12-24 15:52:33,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:52:33,675 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:52:33,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:52:33,676 INFO L85 PathProgramCache]: Analyzing trace with hash 2140892785, now seen corresponding path program 1 times [2023-12-24 15:52:33,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:52:33,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871066478] [2023-12-24 15:52:33,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:52:33,676 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:52:33,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:52:33,677 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:52:33,678 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 (69)] Waiting until timeout for monitored process [2023-12-24 15:52:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:52:34,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 15:52:34,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:52:35,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 15:52:36,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 15:52:36,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 15:52:37,117 INFO L349 Elim1Store]: treesize reduction 62, result has 41.0 percent of original size [2023-12-24 15:52:37,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 76 [2023-12-24 15:52:37,545 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 23 treesize of output 15 [2023-12-24 15:52:37,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2023-12-24 15:52:37,629 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 173 proven. 132 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-12-24 15:52:37,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:52:38,001 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 47 treesize of output 39 [2023-12-24 15:52:38,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:52:38,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871066478] [2023-12-24 15:52:38,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1871066478] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:52:38,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2058765196] [2023-12-24 15:52:38,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:52:38,339 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:52:38,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:52:38,341 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:52:38,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (70)] Waiting until timeout for monitored process [2023-12-24 15:52:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:52:39,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 15:52:39,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:52:40,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:52:41,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 15:52:42,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 15:52:42,785 INFO L349 Elim1Store]: treesize reduction 54, result has 41.9 percent of original size [2023-12-24 15:52:42,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 62 [2023-12-24 15:52:43,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-24 15:52:43,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 15:52:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 173 proven. 132 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-12-24 15:52:43,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:52:43,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 15:52:48,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2058765196] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:52:48,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:52:48,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2023-12-24 15:52:48,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128788153] [2023-12-24 15:52:48,661 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:52:48,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-24 15:52:48,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:52:48,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-24 15:52:48,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1205, Unknown=1, NotChecked=0, Total=1406 [2023-12-24 15:52:48,662 INFO L87 Difference]: Start difference. First operand 1775 states and 2275 transitions. Second operand has 29 states, 25 states have (on average 6.12) internal successors, (153), 26 states have internal predecessors, (153), 10 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (34), 8 states have call predecessors, (34), 10 states have call successors, (34) [2023-12-24 15:52:53,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:52:53,118 INFO L93 Difference]: Finished difference Result 3040 states and 3928 transitions. [2023-12-24 15:52:53,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 15:52:53,119 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 6.12) internal successors, (153), 26 states have internal predecessors, (153), 10 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (34), 8 states have call predecessors, (34), 10 states have call successors, (34) Word has length 152 [2023-12-24 15:52:53,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:52:53,121 INFO L225 Difference]: With dead ends: 3040 [2023-12-24 15:52:53,121 INFO L226 Difference]: Without dead ends: 1832 [2023-12-24 15:52:53,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=496, Invalid=2259, Unknown=1, NotChecked=0, Total=2756 [2023-12-24 15:52:53,122 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 461 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-24 15:52:53,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 1566 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-24 15:52:53,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2023-12-24 15:52:53,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 1770. [2023-12-24 15:52:53,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1770 states, 1682 states have (on average 1.2877526753864448) internal successors, (2166), 1682 states have internal predecessors, (2166), 51 states have call successors, (51), 36 states have call predecessors, (51), 36 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 15:52:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2268 transitions. [2023-12-24 15:52:53,271 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2268 transitions. Word has length 152 [2023-12-24 15:52:53,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:52:53,271 INFO L495 AbstractCegarLoop]: Abstraction has 1770 states and 2268 transitions. [2023-12-24 15:52:53,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 6.12) internal successors, (153), 26 states have internal predecessors, (153), 10 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (34), 8 states have call predecessors, (34), 10 states have call successors, (34) [2023-12-24 15:52:53,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2268 transitions. [2023-12-24 15:52:53,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 15:52:53,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:52:53,272 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:52:53,279 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 (69)] Forceful destruction successful, exit code 0 [2023-12-24 15:52:53,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (70)] Forceful destruction successful, exit code 0 [2023-12-24 15:52:53,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:52:53,679 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:52:53,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:52:53,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1401217556, now seen corresponding path program 1 times [2023-12-24 15:52:53,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:52:53,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206846747] [2023-12-24 15:52:53,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:52:53,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:52:53,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:52:53,681 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:52:53,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2023-12-24 15:52:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:52:54,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 15:52:54,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:52:54,434 INFO L349 Elim1Store]: treesize reduction 6, result has 83.8 percent of original size [2023-12-24 15:52:54,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 69 [2023-12-24 15:52:54,556 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:52:54,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:52:54,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:52:54,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206846747] [2023-12-24 15:52:54,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206846747] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:52:54,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:52:54,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 15:52:54,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831845404] [2023-12-24 15:52:54,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:52:54,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 15:52:54,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:52:54,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 15:52:54,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-24 15:52:54,558 INFO L87 Difference]: Start difference. First operand 1770 states and 2268 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:52:57,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:52:57,071 INFO L93 Difference]: Finished difference Result 3365 states and 4304 transitions. [2023-12-24 15:52:57,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 15:52:57,071 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 152 [2023-12-24 15:52:57,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:52:57,073 INFO L225 Difference]: With dead ends: 3365 [2023-12-24 15:52:57,073 INFO L226 Difference]: Without dead ends: 1540 [2023-12-24 15:52:57,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-12-24 15:52:57,074 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 105 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-24 15:52:57,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1334 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-24 15:52:57,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2023-12-24 15:52:57,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1420. [2023-12-24 15:52:57,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1332 states have (on average 1.2657657657657657) internal successors, (1686), 1332 states have internal predecessors, (1686), 51 states have call successors, (51), 36 states have call predecessors, (51), 36 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 15:52:57,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1788 transitions. [2023-12-24 15:52:57,231 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1788 transitions. Word has length 152 [2023-12-24 15:52:57,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:52:57,232 INFO L495 AbstractCegarLoop]: Abstraction has 1420 states and 1788 transitions. [2023-12-24 15:52:57,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:52:57,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1788 transitions. [2023-12-24 15:52:57,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 15:52:57,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:52:57,233 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:52:57,243 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 (71)] Forceful destruction successful, exit code 0 [2023-12-24 15:52:57,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:52:57,439 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:52:57,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:52:57,439 INFO L85 PathProgramCache]: Analyzing trace with hash -749544154, now seen corresponding path program 1 times [2023-12-24 15:52:57,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:52:57,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59490836] [2023-12-24 15:52:57,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:52:57,440 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:52:57,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:52:57,441 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:52:57,442 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 (72)] Waiting until timeout for monitored process [2023-12-24 15:52:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:52:57,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 15:52:57,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:52:57,882 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2023-12-24 15:52:57,882 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 53 treesize of output 38 [2023-12-24 15:52:57,900 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:52:57,900 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:52:57,900 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:52:57,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59490836] [2023-12-24 15:52:57,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59490836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:52:57,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:52:57,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 15:52:57,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840283932] [2023-12-24 15:52:57,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:52:57,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 15:52:57,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:52:57,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 15:52:57,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 15:52:57,901 INFO L87 Difference]: Start difference. First operand 1420 states and 1788 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:52:58,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:52:58,933 INFO L93 Difference]: Finished difference Result 3219 states and 3999 transitions. [2023-12-24 15:52:58,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 15:52:58,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 152 [2023-12-24 15:52:58,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:52:58,937 INFO L225 Difference]: With dead ends: 3219 [2023-12-24 15:52:58,937 INFO L226 Difference]: Without dead ends: 1936 [2023-12-24 15:52:58,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-24 15:52:58,938 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 188 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 15:52:58,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 808 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 15:52:58,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2023-12-24 15:52:59,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1412. [2023-12-24 15:52:59,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1324 states have (on average 1.263595166163142) internal successors, (1673), 1324 states have internal predecessors, (1673), 51 states have call successors, (51), 36 states have call predecessors, (51), 36 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 15:52:59,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1775 transitions. [2023-12-24 15:52:59,109 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1775 transitions. Word has length 152 [2023-12-24 15:52:59,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:52:59,109 INFO L495 AbstractCegarLoop]: Abstraction has 1412 states and 1775 transitions. [2023-12-24 15:52:59,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:52:59,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1775 transitions. [2023-12-24 15:52:59,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 15:52:59,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:52:59,110 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:52:59,118 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 (72)] Forceful destruction successful, exit code 0 [2023-12-24 15:52:59,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:52:59,316 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:52:59,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:52:59,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1957075240, now seen corresponding path program 1 times [2023-12-24 15:52:59,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:52:59,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326847538] [2023-12-24 15:52:59,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:52:59,317 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:52:59,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:52:59,318 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:52:59,319 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 (73)] Waiting until timeout for monitored process [2023-12-24 15:52:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:52:59,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 15:52:59,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:53:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:53:00,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:53:00,509 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:53:00,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326847538] [2023-12-24 15:53:00,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326847538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:53:00,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:53:00,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-24 15:53:00,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31623080] [2023-12-24 15:53:00,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:53:00,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 15:53:00,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:53:00,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 15:53:00,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-24 15:53:00,510 INFO L87 Difference]: Start difference. First operand 1412 states and 1775 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:53:04,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:53:04,871 INFO L93 Difference]: Finished difference Result 2838 states and 3506 transitions. [2023-12-24 15:53:04,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-24 15:53:04,872 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 152 [2023-12-24 15:53:04,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:53:04,874 INFO L225 Difference]: With dead ends: 2838 [2023-12-24 15:53:04,874 INFO L226 Difference]: Without dead ends: 1935 [2023-12-24 15:53:04,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=432, Invalid=1290, Unknown=0, NotChecked=0, Total=1722 [2023-12-24 15:53:04,875 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 553 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-24 15:53:04,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 1197 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-24 15:53:04,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2023-12-24 15:53:05,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1420. [2023-12-24 15:53:05,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1332 states have (on average 1.2627627627627627) internal successors, (1682), 1332 states have internal predecessors, (1682), 51 states have call successors, (51), 36 states have call predecessors, (51), 36 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 15:53:05,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1784 transitions. [2023-12-24 15:53:05,037 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1784 transitions. Word has length 152 [2023-12-24 15:53:05,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:53:05,037 INFO L495 AbstractCegarLoop]: Abstraction has 1420 states and 1784 transitions. [2023-12-24 15:53:05,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:53:05,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1784 transitions. [2023-12-24 15:53:05,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 15:53:05,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:53:05,038 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:53:05,044 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 (73)] Ended with exit code 0 [2023-12-24 15:53:05,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:53:05,243 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:53:05,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:53:05,244 INFO L85 PathProgramCache]: Analyzing trace with hash -2089487386, now seen corresponding path program 1 times [2023-12-24 15:53:05,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:53:05,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450788461] [2023-12-24 15:53:05,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:53:05,244 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:53:05,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:53:05,245 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:53:05,247 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 (74)] Waiting until timeout for monitored process [2023-12-24 15:53:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:53:05,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 15:53:05,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:53:06,022 INFO L349 Elim1Store]: treesize reduction 6, result has 83.8 percent of original size [2023-12-24 15:53:06,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 54 [2023-12-24 15:53:06,326 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:53:06,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:53:06,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:53:06,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450788461] [2023-12-24 15:53:06,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450788461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:53:06,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:53:06,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-24 15:53:06,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743942688] [2023-12-24 15:53:06,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:53:06,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 15:53:06,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:53:06,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 15:53:06,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-12-24 15:53:06,328 INFO L87 Difference]: Start difference. First operand 1420 states and 1784 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:53:13,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:53:13,252 INFO L93 Difference]: Finished difference Result 3397 states and 4199 transitions. [2023-12-24 15:53:13,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-24 15:53:13,254 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 152 [2023-12-24 15:53:13,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:53:13,256 INFO L225 Difference]: With dead ends: 3397 [2023-12-24 15:53:13,256 INFO L226 Difference]: Without dead ends: 1991 [2023-12-24 15:53:13,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=360, Invalid=1122, Unknown=0, NotChecked=0, Total=1482 [2023-12-24 15:53:13,257 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 483 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-24 15:53:13,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 1839 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-24 15:53:13,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2023-12-24 15:53:13,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1240. [2023-12-24 15:53:13,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1152 states have (on average 1.2621527777777777) internal successors, (1454), 1152 states have internal predecessors, (1454), 51 states have call successors, (51), 36 states have call predecessors, (51), 36 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 15:53:13,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1556 transitions. [2023-12-24 15:53:13,419 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1556 transitions. Word has length 152 [2023-12-24 15:53:13,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:53:13,419 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1556 transitions. [2023-12-24 15:53:13,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:53:13,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1556 transitions. [2023-12-24 15:53:13,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 15:53:13,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:53:13,420 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:53:13,428 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 (74)] Forceful destruction successful, exit code 0 [2023-12-24 15:53:13,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:53:13,622 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:53:13,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:53:13,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1196727919, now seen corresponding path program 1 times [2023-12-24 15:53:13,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:53:13,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230864548] [2023-12-24 15:53:13,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:53:13,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:53:13,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:53:13,624 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:53:13,626 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 (75)] Waiting until timeout for monitored process [2023-12-24 15:53:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:53:13,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 15:53:13,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:53:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 15:53:15,460 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:53:15,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:53:15,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230864548] [2023-12-24 15:53:15,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230864548] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:53:15,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:53:15,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-24 15:53:15,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079432862] [2023-12-24 15:53:15,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:53:15,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 15:53:15,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:53:15,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 15:53:15,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-12-24 15:53:15,462 INFO L87 Difference]: Start difference. First operand 1240 states and 1556 transitions. Second operand has 16 states, 16 states have (on average 4.5) internal successors, (72), 16 states have internal predecessors, (72), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:53:29,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:53:33,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:53:49,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:53:49,564 INFO L93 Difference]: Finished difference Result 2780 states and 3432 transitions. [2023-12-24 15:53:49,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-24 15:53:49,566 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.5) internal successors, (72), 16 states have internal predecessors, (72), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 154 [2023-12-24 15:53:49,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:53:49,567 INFO L225 Difference]: With dead ends: 2780 [2023-12-24 15:53:49,567 INFO L226 Difference]: Without dead ends: 1705 [2023-12-24 15:53:49,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=596, Invalid=1852, Unknown=2, NotChecked=0, Total=2450 [2023-12-24 15:53:49,569 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 583 mSDsluCounter, 2613 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 34 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2023-12-24 15:53:49,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 2884 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1362 Invalid, 2 Unknown, 0 Unchecked, 13.5s Time] [2023-12-24 15:53:49,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2023-12-24 15:53:49,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1230. [2023-12-24 15:53:49,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1142 states have (on average 1.2618213660245183) internal successors, (1441), 1142 states have internal predecessors, (1441), 51 states have call successors, (51), 36 states have call predecessors, (51), 36 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 15:53:49,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1543 transitions. [2023-12-24 15:53:49,779 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1543 transitions. Word has length 154 [2023-12-24 15:53:49,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:53:49,780 INFO L495 AbstractCegarLoop]: Abstraction has 1230 states and 1543 transitions. [2023-12-24 15:53:49,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.5) internal successors, (72), 16 states have internal predecessors, (72), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:53:49,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1543 transitions. [2023-12-24 15:53:49,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2023-12-24 15:53:49,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:53:49,782 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-24 15:53:49,790 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 (75)] Ended with exit code 0 [2023-12-24 15:53:49,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:53:49,988 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:53:49,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:53:49,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1025246093, now seen corresponding path program 1 times [2023-12-24 15:53:49,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:53:49,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889878450] [2023-12-24 15:53:49,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:53:49,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:53:49,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:53:49,999 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:53:50,032 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 (76)] Waiting until timeout for monitored process [2023-12-24 15:53:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:53:50,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 15:53:50,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:53:50,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2312 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 2282 trivial. 0 not checked. [2023-12-24 15:53:50,571 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:53:50,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:53:50,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889878450] [2023-12-24 15:53:50,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889878450] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:53:50,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:53:50,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:53:50,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121592204] [2023-12-24 15:53:50,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:53:50,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:53:50,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:53:50,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:53:50,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:53:50,572 INFO L87 Difference]: Start difference. First operand 1230 states and 1543 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:53:50,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:53:50,848 INFO L93 Difference]: Finished difference Result 2432 states and 2956 transitions. [2023-12-24 15:53:50,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 15:53:50,849 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 284 [2023-12-24 15:53:50,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:53:50,850 INFO L225 Difference]: With dead ends: 2432 [2023-12-24 15:53:50,850 INFO L226 Difference]: Without dead ends: 1367 [2023-12-24 15:53:50,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:53:50,851 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 108 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:53:50,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 688 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:53:50,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2023-12-24 15:53:51,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1078. [2023-12-24 15:53:51,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 990 states have (on average 1.1717171717171717) internal successors, (1160), 990 states have internal predecessors, (1160), 51 states have call successors, (51), 36 states have call predecessors, (51), 36 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 15:53:51,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1262 transitions. [2023-12-24 15:53:51,018 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1262 transitions. Word has length 284 [2023-12-24 15:53:51,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:53:51,019 INFO L495 AbstractCegarLoop]: Abstraction has 1078 states and 1262 transitions. [2023-12-24 15:53:51,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:53:51,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1262 transitions. [2023-12-24 15:53:51,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2023-12-24 15:53:51,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:53:51,021 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-24 15:53:51,032 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 (76)] Forceful destruction successful, exit code 0 [2023-12-24 15:53:51,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:53:51,232 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:53:51,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:53:51,232 INFO L85 PathProgramCache]: Analyzing trace with hash -602544267, now seen corresponding path program 1 times [2023-12-24 15:53:51,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:53:51,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610899954] [2023-12-24 15:53:51,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:53:51,233 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:53:51,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:53:51,234 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:53:51,236 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 (77)] Waiting until timeout for monitored process [2023-12-24 15:53:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:53:51,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 15:53:51,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:53:53,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2312 backedges. 26 proven. 1207 refuted. 0 times theorem prover too weak. 1079 trivial. 0 not checked. [2023-12-24 15:53:53,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:53:53,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2312 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 2285 trivial. 0 not checked. [2023-12-24 15:53:53,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:53:53,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610899954] [2023-12-24 15:53:53,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610899954] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:53:53,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:53:53,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2023-12-24 15:53:53,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271434856] [2023-12-24 15:53:53,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:53:53,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:53:53,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:53:53,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:53:53,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-24 15:53:53,793 INFO L87 Difference]: Start difference. First operand 1078 states and 1262 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:53:54,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:53:54,066 INFO L93 Difference]: Finished difference Result 2072 states and 2403 transitions. [2023-12-24 15:53:54,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:53:54,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 284 [2023-12-24 15:53:54,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:53:54,068 INFO L225 Difference]: With dead ends: 2072 [2023-12-24 15:53:54,068 INFO L226 Difference]: Without dead ends: 1159 [2023-12-24 15:53:54,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 15:53:54,069 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 154 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:53:54,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 425 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:53:54,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2023-12-24 15:53:54,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 891. [2023-12-24 15:53:54,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 803 states have (on average 1.1469489414694893) internal successors, (921), 803 states have internal predecessors, (921), 51 states have call successors, (51), 36 states have call predecessors, (51), 36 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 15:53:54,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1023 transitions. [2023-12-24 15:53:54,217 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1023 transitions. Word has length 284 [2023-12-24 15:53:54,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:53:54,217 INFO L495 AbstractCegarLoop]: Abstraction has 891 states and 1023 transitions. [2023-12-24 15:53:54,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:53:54,217 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1023 transitions. [2023-12-24 15:53:54,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2023-12-24 15:53:54,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:53:54,219 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2023-12-24 15:53:54,229 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 (77)] Forceful destruction successful, exit code 0 [2023-12-24 15:53:54,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:53:54,427 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:53:54,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:53:54,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1495353392, now seen corresponding path program 1 times [2023-12-24 15:53:54,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:53:54,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518177889] [2023-12-24 15:53:54,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:53:54,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:53:54,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:53:54,429 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:53:54,430 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 (78)] Waiting until timeout for monitored process [2023-12-24 15:53:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:53:54,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 15:53:54,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:53:56,576 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 [2023-12-24 15:53:56,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2313 backedges. 29 proven. 1205 refuted. 0 times theorem prover too weak. 1079 trivial. 0 not checked. [2023-12-24 15:53:56,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:53:56,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2313 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 2285 trivial. 0 not checked. [2023-12-24 15:53:56,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:53:56,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518177889] [2023-12-24 15:53:56,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518177889] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:53:56,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:53:56,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-12-24 15:53:56,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338810566] [2023-12-24 15:53:56,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:53:56,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:53:56,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:53:56,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:53:56,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-24 15:53:56,814 INFO L87 Difference]: Start difference. First operand 891 states and 1023 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:53:57,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:53:57,115 INFO L93 Difference]: Finished difference Result 1503 states and 1731 transitions. [2023-12-24 15:53:57,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:53:57,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 289 [2023-12-24 15:53:57,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:53:57,118 INFO L225 Difference]: With dead ends: 1503 [2023-12-24 15:53:57,118 INFO L226 Difference]: Without dead ends: 929 [2023-12-24 15:53:57,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-24 15:53:57,118 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 116 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:53:57,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 447 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:53:57,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2023-12-24 15:53:57,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 867. [2023-12-24 15:53:57,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 779 states have (on average 1.141206675224647) internal successors, (889), 779 states have internal predecessors, (889), 51 states have call successors, (51), 36 states have call predecessors, (51), 36 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 15:53:57,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 991 transitions. [2023-12-24 15:53:57,264 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 991 transitions. Word has length 289 [2023-12-24 15:53:57,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:53:57,265 INFO L495 AbstractCegarLoop]: Abstraction has 867 states and 991 transitions. [2023-12-24 15:53:57,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:53:57,265 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 991 transitions. [2023-12-24 15:53:57,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2023-12-24 15:53:57,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:53:57,267 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:53:57,275 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 (78)] Ended with exit code 0 [2023-12-24 15:53:57,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:53:57,475 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:53:57,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:53:57,475 INFO L85 PathProgramCache]: Analyzing trace with hash -601419125, now seen corresponding path program 1 times [2023-12-24 15:53:57,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:53:57,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378790190] [2023-12-24 15:53:57,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:53:57,476 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:53:57,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:53:57,477 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:53:57,488 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 (79)] Waiting until timeout for monitored process [2023-12-24 15:53:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:53:57,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 15:53:57,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:53:58,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2313 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 2289 trivial. 0 not checked. [2023-12-24 15:53:58,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:53:58,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:53:58,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378790190] [2023-12-24 15:53:58,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378790190] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:53:58,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:53:58,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:53:58,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783846744] [2023-12-24 15:53:58,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:53:58,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:53:58,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:53:58,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:53:58,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:53:58,059 INFO L87 Difference]: Start difference. First operand 867 states and 991 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:53:58,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:53:58,658 INFO L93 Difference]: Finished difference Result 1485 states and 1702 transitions. [2023-12-24 15:53:58,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:53:58,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 292 [2023-12-24 15:53:58,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:53:58,660 INFO L225 Difference]: With dead ends: 1485 [2023-12-24 15:53:58,661 INFO L226 Difference]: Without dead ends: 999 [2023-12-24 15:53:58,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:53:58,667 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 99 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 15:53:58,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 552 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 15:53:58,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2023-12-24 15:53:58,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 866. [2023-12-24 15:53:58,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 778 states have (on average 1.134961439588689) internal successors, (883), 778 states have internal predecessors, (883), 51 states have call successors, (51), 36 states have call predecessors, (51), 36 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 15:53:58,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 985 transitions. [2023-12-24 15:53:58,828 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 985 transitions. Word has length 292 [2023-12-24 15:53:58,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:53:58,828 INFO L495 AbstractCegarLoop]: Abstraction has 866 states and 985 transitions. [2023-12-24 15:53:58,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:53:58,828 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 985 transitions. [2023-12-24 15:53:58,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-24 15:53:58,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:53:58,832 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:53:58,840 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 (79)] Ended with exit code 0 [2023-12-24 15:53:59,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:53:59,033 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:53:59,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:53:59,033 INFO L85 PathProgramCache]: Analyzing trace with hash -173696174, now seen corresponding path program 1 times [2023-12-24 15:53:59,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:53:59,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570940945] [2023-12-24 15:53:59,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:53:59,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:53:59,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:53:59,035 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:53:59,035 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 (80)] Waiting until timeout for monitored process [2023-12-24 15:53:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:53:59,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 15:53:59,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:54:00,608 INFO L349 Elim1Store]: treesize reduction 9, result has 87.7 percent of original size [2023-12-24 15:54:00,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 93 [2023-12-24 15:54:00,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2313 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 2289 trivial. 0 not checked. [2023-12-24 15:54:00,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:54:00,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:54:00,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570940945] [2023-12-24 15:54:00,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570940945] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:54:00,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:54:00,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 15:54:00,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104860152] [2023-12-24 15:54:00,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:54:00,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 15:54:00,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:54:00,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 15:54:00,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-24 15:54:00,804 INFO L87 Difference]: Start difference. First operand 866 states and 985 transitions. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:54:04,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:54:04,046 INFO L93 Difference]: Finished difference Result 1541 states and 1755 transitions. [2023-12-24 15:54:04,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 15:54:04,047 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 294 [2023-12-24 15:54:04,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:54:04,048 INFO L225 Difference]: With dead ends: 1541 [2023-12-24 15:54:04,048 INFO L226 Difference]: Without dead ends: 1056 [2023-12-24 15:54:04,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-12-24 15:54:04,049 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 224 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-24 15:54:04,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 1138 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-24 15:54:04,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2023-12-24 15:54:04,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 862. [2023-12-24 15:54:04,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 774 states have (on average 1.1291989664082687) internal successors, (874), 774 states have internal predecessors, (874), 51 states have call successors, (51), 36 states have call predecessors, (51), 36 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 15:54:04,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 976 transitions. [2023-12-24 15:54:04,196 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 976 transitions. Word has length 294 [2023-12-24 15:54:04,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:54:04,196 INFO L495 AbstractCegarLoop]: Abstraction has 862 states and 976 transitions. [2023-12-24 15:54:04,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:54:04,196 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 976 transitions. [2023-12-24 15:54:04,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-24 15:54:04,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:54:04,198 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:54:04,206 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 (80)] Forceful destruction successful, exit code 0 [2023-12-24 15:54:04,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:54:04,406 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:54:04,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:54:04,407 INFO L85 PathProgramCache]: Analyzing trace with hash -299824764, now seen corresponding path program 1 times [2023-12-24 15:54:04,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:54:04,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653891606] [2023-12-24 15:54:04,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:54:04,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:54:04,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:54:04,408 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:54:04,409 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 (81)] Waiting until timeout for monitored process [2023-12-24 15:54:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:54:04,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 15:54:04,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:54:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2313 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 2289 trivial. 0 not checked. [2023-12-24 15:54:05,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:54:05,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:54:05,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [653891606] [2023-12-24 15:54:05,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [653891606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:54:05,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:54:05,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 15:54:05,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705045787] [2023-12-24 15:54:05,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:54:05,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 15:54:05,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:54:05,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 15:54:05,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-24 15:54:05,545 INFO L87 Difference]: Start difference. First operand 862 states and 976 transitions. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:54:08,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 15:54:09,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:54:09,594 INFO L93 Difference]: Finished difference Result 1490 states and 1688 transitions. [2023-12-24 15:54:09,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 15:54:09,595 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 294 [2023-12-24 15:54:09,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:54:09,596 INFO L225 Difference]: With dead ends: 1490 [2023-12-24 15:54:09,596 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 15:54:09,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-12-24 15:54:09,597 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 198 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:54:09,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1116 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-24 15:54:09,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 15:54:09,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 15:54:09,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 15:54:09,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 15:54:09,598 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 294 [2023-12-24 15:54:09,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:54:09,598 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 15:54:09,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 15:54:09,598 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 15:54:09,598 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 15:54:09,600 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 15:54:09,610 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 (81)] Forceful destruction successful, exit code 0 [2023-12-24 15:54:09,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:54:09,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-24 16:00:35,072 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 16:00:35,078 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-25-81-11-11-9-13-8-13-7-13-7-32-7-32-7-32-7-32-24-36-24-36-24-36-24-36-24-36-24-36-24-36-24-36-24-36-24-36-24-36-24-36-22-36-20-36-20-36-20-36-18-36-17-36-15-36-12-36-9-36-7-36-7-36-7-31-7-31-5-31-5-31-5-21-5-13-1 term,while PolyPacSimplificationTermWalker was simplifying 7 xjuncts wrt. a ∧-98-81-11-32-9-24-8-24-7-24-7-32-7-32-7-32-7-32-24-36-24-36-24-36-24-36-24-36-24-36-24-36-24-36-24-36-24-36-24-36-24-36-22-36-20-36-20-36-20-36-18-36-17-36-15-36-12-36-9-36-7-36-7-36-7-31-7-31-5-31-5-31-5-21-2-13-1 context. [2023-12-24 16:00:35,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 16:00:35,087 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-24 16:00:35,088 INFO L158 Benchmark]: Toolchain (without parser) took 868915.47ms. Allocated memory was 280.0MB in the beginning and 886.0MB in the end (delta: 606.1MB). Free memory was 236.6MB in the beginning and 823.1MB in the end (delta: -586.5MB). Peak memory consumption was 21.2MB. Max. memory is 8.0GB. [2023-12-24 16:00:35,088 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 211.8MB. Free memory was 163.2MB in the beginning and 163.1MB in the end (delta: 82.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 16:00:35,089 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.26ms. Allocated memory is still 280.0MB. Free memory was 236.3MB in the beginning and 219.4MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-24 16:00:35,089 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.25ms. Allocated memory is still 280.0MB. Free memory was 219.4MB in the beginning and 215.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 16:00:35,089 INFO L158 Benchmark]: Boogie Preprocessor took 83.59ms. Allocated memory is still 280.0MB. Free memory was 215.9MB in the beginning and 209.9MB in the end (delta: 6.0MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-24 16:00:35,089 INFO L158 Benchmark]: RCFGBuilder took 698.62ms. Allocated memory is still 280.0MB. Free memory was 209.9MB in the beginning and 212.7MB in the end (delta: -2.8MB). Peak memory consumption was 22.4MB. Max. memory is 8.0GB. [2023-12-24 16:00:35,089 INFO L158 Benchmark]: TraceAbstraction took 867761.54ms. Allocated memory was 280.0MB in the beginning and 886.0MB in the end (delta: 606.1MB). Free memory was 211.6MB in the beginning and 823.1MB in the end (delta: -611.4MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 16:00:35,089 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 211.8MB. Free memory was 163.2MB in the beginning and 163.1MB in the end (delta: 82.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 318.26ms. Allocated memory is still 280.0MB. Free memory was 236.3MB in the beginning and 219.4MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.25ms. Allocated memory is still 280.0MB. Free memory was 219.4MB in the beginning and 215.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 83.59ms. Allocated memory is still 280.0MB. Free memory was 215.9MB in the beginning and 209.9MB in the end (delta: 6.0MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 698.62ms. Allocated memory is still 280.0MB. Free memory was 209.9MB in the beginning and 212.7MB in the end (delta: -2.8MB). Peak memory consumption was 22.4MB. Max. memory is 8.0GB. * TraceAbstraction took 867761.54ms. Allocated memory was 280.0MB in the beginning and 886.0MB in the end (delta: 606.1MB). Free memory was 211.6MB in the beginning and 823.1MB in the end (delta: -611.4MB). 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 ∨-3-16-2-57-2-57-2-12-2-3-2-45-2-23-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-18-10-57-3-2-13-2-12-2-3-2-45-2-23-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown