/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/loops/n.c24.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 22:08:56,586 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 22:08:56,655 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 22:08:56,658 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 22:08:56,658 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 22:08:56,681 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 22:08:56,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 22:08:56,681 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 22:08:56,682 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 22:08:56,685 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 22:08:56,685 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 22:08:56,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 22:08:56,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 22:08:56,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 22:08:56,686 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 22:08:56,687 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 22:08:56,687 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 22:08:56,687 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 22:08:56,687 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 22:08:56,688 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 22:08:56,688 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 22:08:56,689 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 22:08:56,689 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 22:08:56,689 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 22:08:56,689 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 22:08:56,689 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 22:08:56,689 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 22:08:56,690 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 22:08:56,690 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 22:08:56,690 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 22:08:56,691 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 22:08:56,691 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 22:08:56,691 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 22:08:56,691 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 22:08:56,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 22:08:56,691 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 22:08:56,691 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 22:08:56,691 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 22:08:56,691 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 22:08:56,692 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 22:08:56,692 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 22:08:56,692 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 22:08:56,692 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 22:08:56,692 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 22:08:56,692 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 22:08:56,692 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 22:08:56,692 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 22:08:56,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 22:08:56,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 22:08:56,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 22:08:56,871 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 22:08:56,872 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 22:08:56,872 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c24.i [2023-12-24 22:08:57,918 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 22:08:58,098 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 22:08:58,099 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c24.i [2023-12-24 22:08:58,107 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6adb0f043/1ecf87d3fba74092bfcf62d2811857cb/FLAGcf4308478 [2023-12-24 22:08:58,121 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6adb0f043/1ecf87d3fba74092bfcf62d2811857cb [2023-12-24 22:08:58,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 22:08:58,124 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 22:08:58,127 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 22:08:58,127 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 22:08:58,130 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 22:08:58,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:08:58" (1/1) ... [2023-12-24 22:08:58,131 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@777ec539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:08:58, skipping insertion in model container [2023-12-24 22:08:58,131 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:08:58" (1/1) ... [2023-12-24 22:08:58,157 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 22:08:58,292 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c24.i[805,818] [2023-12-24 22:08:58,332 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 22:08:58,356 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 22:08:58,371 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c24.i[805,818] [2023-12-24 22:08:58,385 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 22:08:58,405 INFO L206 MainTranslator]: Completed translation [2023-12-24 22:08:58,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:08:58 WrapperNode [2023-12-24 22:08:58,406 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 22:08:58,406 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 22:08:58,406 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 22:08:58,406 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 22:08:58,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:08:58" (1/1) ... [2023-12-24 22:08:58,418 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:08:58" (1/1) ... [2023-12-24 22:08:58,435 INFO L138 Inliner]: procedures = 72, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 152 [2023-12-24 22:08:58,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 22:08:58,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 22:08:58,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 22:08:58,436 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 22:08:58,443 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:08:58" (1/1) ... [2023-12-24 22:08:58,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:08:58" (1/1) ... [2023-12-24 22:08:58,446 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:08:58" (1/1) ... [2023-12-24 22:08:58,469 INFO L175 MemorySlicer]: Split 21 memory accesses to 4 slices as follows [2, 8, 2, 9]. 43 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0]. The 6 writes are split as follows [0, 0, 1, 5]. [2023-12-24 22:08:58,470 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:08:58" (1/1) ... [2023-12-24 22:08:58,470 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:08:58" (1/1) ... [2023-12-24 22:08:58,484 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:08:58" (1/1) ... [2023-12-24 22:08:58,486 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:08:58" (1/1) ... [2023-12-24 22:08:58,488 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:08:58" (1/1) ... [2023-12-24 22:08:58,489 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:08:58" (1/1) ... [2023-12-24 22:08:58,491 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 22:08:58,491 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 22:08:58,492 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 22:08:58,492 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 22:08:58,492 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:08:58" (1/1) ... [2023-12-24 22:08:58,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 22:08:58,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 22:08:58,526 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 22:08:58,545 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 22:08:58,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 22:08:58,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 22:08:58,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 22:08:58,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 22:08:58,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 22:08:58,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-24 22:08:58,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 22:08:58,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 22:08:58,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 22:08:58,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 22:08:58,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4#0 [2023-12-24 22:08:58,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4#1 [2023-12-24 22:08:58,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4#2 [2023-12-24 22:08:58,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4#3 [2023-12-24 22:08:58,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 22:08:58,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 22:08:58,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 22:08:58,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 22:08:58,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-24 22:08:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 22:08:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 22:08:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 22:08:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 22:08:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 22:08:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 22:08:58,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 22:08:58,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 22:08:58,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#0 [2023-12-24 22:08:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#1 [2023-12-24 22:08:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#2 [2023-12-24 22:08:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#3 [2023-12-24 22:08:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#0 [2023-12-24 22:08:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#1 [2023-12-24 22:08:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#2 [2023-12-24 22:08:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#3 [2023-12-24 22:08:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1#0 [2023-12-24 22:08:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1#1 [2023-12-24 22:08:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1#2 [2023-12-24 22:08:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1#3 [2023-12-24 22:08:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 22:08:58,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 22:08:58,664 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 22:08:58,665 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 22:08:58,894 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 22:08:58,927 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 22:08:58,927 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-24 22:08:58,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:08:58 BoogieIcfgContainer [2023-12-24 22:08:58,928 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 22:08:58,929 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 22:08:58,929 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 22:08:58,956 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 22:08:58,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 10:08:58" (1/3) ... [2023-12-24 22:08:58,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f6d551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:08:58, skipping insertion in model container [2023-12-24 22:08:58,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:08:58" (2/3) ... [2023-12-24 22:08:58,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f6d551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:08:58, skipping insertion in model container [2023-12-24 22:08:58,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:08:58" (3/3) ... [2023-12-24 22:08:58,959 INFO L112 eAbstractionObserver]: Analyzing ICFG n.c24.i [2023-12-24 22:08:58,970 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 22:08:58,971 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 22:08:58,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 22:08:59,003 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;@6b916f9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 22:08:59,004 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 22:08:59,006 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 27 states have internal predecessors, (46), 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 22:08:59,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-24 22:08:59,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:08:59,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:08:59,011 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:08:59,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:08:59,014 INFO L85 PathProgramCache]: Analyzing trace with hash -230994160, now seen corresponding path program 1 times [2023-12-24 22:08:59,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:08:59,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309361772] [2023-12-24 22:08:59,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:08:59,023 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 22:08:59,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:08:59,031 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 22:08:59,032 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 (2)] Waiting until timeout for monitored process [2023-12-24 22:08:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:08:59,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 22:08:59,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:08:59,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:08:59,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:08:59,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:08:59,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309361772] [2023-12-24 22:08:59,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309361772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:08:59,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:08:59,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 22:08:59,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320389547] [2023-12-24 22:08:59,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:08:59,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 22:08:59,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:08:59,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 22:08:59,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 22:08:59,190 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 27 states have internal predecessors, (46), 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) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 22:08:59,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:08:59,219 INFO L93 Difference]: Finished difference Result 54 states and 88 transitions. [2023-12-24 22:08:59,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 22:08:59,225 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) Word has length 7 [2023-12-24 22:08:59,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:08:59,230 INFO L225 Difference]: With dead ends: 54 [2023-12-24 22:08:59,231 INFO L226 Difference]: Without dead ends: 25 [2023-12-24 22:08:59,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 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 22:08:59,253 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:08:59,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:08:59,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-24 22:08:59,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-12-24 22:08:59,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 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 22:08:59,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2023-12-24 22:08:59,276 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 7 [2023-12-24 22:08:59,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:08:59,277 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2023-12-24 22:08:59,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 22:08:59,278 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2023-12-24 22:08:59,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-24 22:08:59,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:08:59,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:08:59,287 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 (2)] Ended with exit code 0 [2023-12-24 22:08:59,481 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 22:08:59,482 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:08:59,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:08:59,482 INFO L85 PathProgramCache]: Analyzing trace with hash -233705141, now seen corresponding path program 1 times [2023-12-24 22:08:59,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:08:59,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834878026] [2023-12-24 22:08:59,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:08:59,483 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 22:08:59,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:08:59,484 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 22:08:59,513 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 22:08:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:08:59,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 22:08:59,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:08:59,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:08:59,538 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:08:59,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:08:59,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834878026] [2023-12-24 22:08:59,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834878026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:08:59,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:08:59,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 22:08:59,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584406346] [2023-12-24 22:08:59,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:08:59,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 22:08:59,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:08:59,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 22:08:59,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 22:08:59,540 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 22:08:59,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:08:59,578 INFO L93 Difference]: Finished difference Result 67 states and 97 transitions. [2023-12-24 22:08:59,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 22:08:59,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) Word has length 7 [2023-12-24 22:08:59,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:08:59,579 INFO L225 Difference]: With dead ends: 67 [2023-12-24 22:08:59,579 INFO L226 Difference]: Without dead ends: 44 [2023-12-24 22:08:59,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 22:08:59,580 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 26 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:08:59,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 45 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:08:59,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-24 22:08:59,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 27. [2023-12-24 22:08:59,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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 22:08:59,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2023-12-24 22:08:59,584 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 7 [2023-12-24 22:08:59,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:08:59,584 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2023-12-24 22:08:59,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 22:08:59,584 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2023-12-24 22:08:59,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-24 22:08:59,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:08:59,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:08:59,587 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 22:08:59,786 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 22:08:59,787 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:08:59,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:08:59,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1551984996, now seen corresponding path program 1 times [2023-12-24 22:08:59,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:08:59,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887117625] [2023-12-24 22:08:59,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:08:59,789 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 22:08:59,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:08:59,790 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 22:08:59,819 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 22:08:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:08:59,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 22:08:59,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:08:59,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-24 22:08:59,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:08:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-24 22:08:59,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:08:59,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887117625] [2023-12-24 22:08:59,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887117625] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:08:59,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:08:59,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-24 22:08:59,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190764426] [2023-12-24 22:08:59,888 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:08:59,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 22:08:59,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:08:59,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 22:08:59,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-24 22:08:59,890 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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 22:09:00,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:09:00,047 INFO L93 Difference]: Finished difference Result 108 states and 160 transitions. [2023-12-24 22:09:00,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 22:09:00,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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) Word has length 13 [2023-12-24 22:09:00,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:09:00,048 INFO L225 Difference]: With dead ends: 108 [2023-12-24 22:09:00,048 INFO L226 Difference]: Without dead ends: 84 [2023-12-24 22:09:00,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-24 22:09:00,049 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 156 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:09:00,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 105 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:09:00,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-24 22:09:00,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-12-24 22:09:00,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.4578313253012047) internal successors, (121), 83 states have internal predecessors, (121), 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 22:09:00,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 121 transitions. [2023-12-24 22:09:00,057 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 121 transitions. Word has length 13 [2023-12-24 22:09:00,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:09:00,057 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 121 transitions. [2023-12-24 22:09:00,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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 22:09:00,058 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 121 transitions. [2023-12-24 22:09:00,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-24 22:09:00,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:09:00,058 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:09:00,063 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 22:09:00,265 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 22:09:00,266 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:09:00,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:09:00,266 INFO L85 PathProgramCache]: Analyzing trace with hash -370254069, now seen corresponding path program 2 times [2023-12-24 22:09:00,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:09:00,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140341028] [2023-12-24 22:09:00,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:09:00,267 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 22:09:00,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:09:00,269 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 22:09:00,271 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 22:09:00,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:09:00,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:09:00,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 22:09:00,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:09:00,424 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-24 22:09:00,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:09:00,502 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-24 22:09:00,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:09:00,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140341028] [2023-12-24 22:09:00,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140341028] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:09:00,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:09:00,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-24 22:09:00,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008278912] [2023-12-24 22:09:00,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:09:00,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 22:09:00,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:09:00,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 22:09:00,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-24 22:09:00,504 INFO L87 Difference]: Start difference. First operand 84 states and 121 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 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 22:09:00,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:09:00,882 INFO L93 Difference]: Finished difference Result 276 states and 415 transitions. [2023-12-24 22:09:00,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 22:09:00,882 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 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) Word has length 31 [2023-12-24 22:09:00,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:09:00,883 INFO L225 Difference]: With dead ends: 276 [2023-12-24 22:09:00,884 INFO L226 Difference]: Without dead ends: 198 [2023-12-24 22:09:00,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-24 22:09:00,885 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 780 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:09:00,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 543 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 22:09:00,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-12-24 22:09:00,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2023-12-24 22:09:00,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.467005076142132) internal successors, (289), 197 states have internal predecessors, (289), 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 22:09:00,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 289 transitions. [2023-12-24 22:09:00,899 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 289 transitions. Word has length 31 [2023-12-24 22:09:00,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:09:00,900 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 289 transitions. [2023-12-24 22:09:00,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 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 22:09:00,900 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 289 transitions. [2023-12-24 22:09:00,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-24 22:09:00,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:09:00,902 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:09:00,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 22:09:01,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:09:01,120 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:09:01,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:09:01,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1913903019, now seen corresponding path program 3 times [2023-12-24 22:09:01,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:09:01,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650114322] [2023-12-24 22:09:01,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:09:01,122 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 22:09:01,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:09:01,123 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 22:09:01,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 22:09:01,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-24 22:09:01,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:09:01,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 22:09:01,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:09:01,248 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-12-24 22:09:01,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:09:01,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:09:01,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650114322] [2023-12-24 22:09:01,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650114322] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:09:01,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:09:01,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 22:09:01,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846923487] [2023-12-24 22:09:01,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:09:01,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 22:09:01,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:09:01,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 22:09:01,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 22:09:01,250 INFO L87 Difference]: Start difference. First operand 198 states and 289 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 22:09:01,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:09:01,288 INFO L93 Difference]: Finished difference Result 380 states and 561 transitions. [2023-12-24 22:09:01,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 22:09:01,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) Word has length 67 [2023-12-24 22:09:01,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:09:01,294 INFO L225 Difference]: With dead ends: 380 [2023-12-24 22:09:01,294 INFO L226 Difference]: Without dead ends: 376 [2023-12-24 22:09:01,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 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 22:09:01,297 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 24 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:09:01,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 85 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 22:09:01,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2023-12-24 22:09:01,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 199. [2023-12-24 22:09:01,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.4696969696969697) internal successors, (291), 198 states have internal predecessors, (291), 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 22:09:01,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 291 transitions. [2023-12-24 22:09:01,316 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 291 transitions. Word has length 67 [2023-12-24 22:09:01,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:09:01,316 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 291 transitions. [2023-12-24 22:09:01,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 22:09:01,316 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 291 transitions. [2023-12-24 22:09:01,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-24 22:09:01,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:09:01,318 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:09:01,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 22:09:01,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:09:01,521 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:09:01,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:09:01,521 INFO L85 PathProgramCache]: Analyzing trace with hash -838044372, now seen corresponding path program 1 times [2023-12-24 22:09:01,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:09:01,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528702088] [2023-12-24 22:09:01,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:09:01,522 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 22:09:01,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:09:01,523 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 22:09:01,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 22:09:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:09:01,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 22:09:01,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:09:01,687 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-24 22:09:01,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:09:01,981 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-24 22:09:01,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:09:01,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528702088] [2023-12-24 22:09:01,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528702088] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:09:01,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:09:01,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-24 22:09:01,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506032147] [2023-12-24 22:09:01,981 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:09:01,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-24 22:09:01,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:09:01,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-24 22:09:01,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-24 22:09:01,983 INFO L87 Difference]: Start difference. First operand 199 states and 291 transitions. Second operand has 24 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 23 states have internal predecessors, (38), 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 22:09:03,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:09:03,602 INFO L93 Difference]: Finished difference Result 652 states and 979 transitions. [2023-12-24 22:09:03,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 22:09:03,602 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 23 states have internal predecessors, (38), 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) Word has length 71 [2023-12-24 22:09:03,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:09:03,604 INFO L225 Difference]: With dead ends: 652 [2023-12-24 22:09:03,604 INFO L226 Difference]: Without dead ends: 465 [2023-12-24 22:09:03,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 22:09:03,606 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 3796 mSDsluCounter, 2193 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3796 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 1517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 22:09:03,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3796 Valid, 2397 Invalid, 1517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1357 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 22:09:03,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2023-12-24 22:09:03,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 427. [2023-12-24 22:09:03,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.471830985915493) internal successors, (627), 426 states have internal predecessors, (627), 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 22:09:03,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 627 transitions. [2023-12-24 22:09:03,631 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 627 transitions. Word has length 71 [2023-12-24 22:09:03,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:09:03,631 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 627 transitions. [2023-12-24 22:09:03,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 23 states have internal predecessors, (38), 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 22:09:03,631 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 627 transitions. [2023-12-24 22:09:03,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-24 22:09:03,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:09:03,635 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:09:03,640 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 (7)] Ended with exit code 0 [2023-12-24 22:09:03,838 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 22:09:03,839 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:09:03,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:09:03,839 INFO L85 PathProgramCache]: Analyzing trace with hash 254447212, now seen corresponding path program 2 times [2023-12-24 22:09:03,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:09:03,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770481073] [2023-12-24 22:09:03,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:09:03,840 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 22:09:03,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:09:03,845 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 22:09:03,847 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 22:09:03,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:09:03,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:09:03,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 22:09:03,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:09:04,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2023-12-24 22:09:04,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:09:05,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2023-12-24 22:09:05,603 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:09:05,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770481073] [2023-12-24 22:09:05,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770481073] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:09:05,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:09:05,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-24 22:09:05,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658748891] [2023-12-24 22:09:05,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:09:05,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-24 22:09:05,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:09:05,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-24 22:09:05,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-24 22:09:05,605 INFO L87 Difference]: Start difference. First operand 427 states and 627 transitions. Second operand has 48 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 47 states have internal predecessors, (62), 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 22:09:13,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:09:13,962 INFO L93 Difference]: Finished difference Result 1360 states and 2047 transitions. [2023-12-24 22:09:13,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-24 22:09:13,963 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 47 states have internal predecessors, (62), 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) Word has length 143 [2023-12-24 22:09:13,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:09:13,966 INFO L225 Difference]: With dead ends: 1360 [2023-12-24 22:09:13,966 INFO L226 Difference]: Without dead ends: 957 [2023-12-24 22:09:13,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-24 22:09:13,968 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 13520 mSDsluCounter, 9579 mSDsCounter, 0 mSdLazyCounter, 5609 mSolverCounterSat, 546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13520 SdHoareTripleChecker+Valid, 9999 SdHoareTripleChecker+Invalid, 6155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 546 IncrementalHoareTripleChecker+Valid, 5609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:09:13,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13520 Valid, 9999 Invalid, 6155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [546 Valid, 5609 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-24 22:09:13,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2023-12-24 22:09:13,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 883. [2023-12-24 22:09:13,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.4727891156462585) internal successors, (1299), 882 states have internal predecessors, (1299), 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 22:09:13,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1299 transitions. [2023-12-24 22:09:13,996 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1299 transitions. Word has length 143 [2023-12-24 22:09:13,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:09:13,996 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1299 transitions. [2023-12-24 22:09:13,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 47 states have internal predecessors, (62), 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 22:09:13,996 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1299 transitions. [2023-12-24 22:09:13,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2023-12-24 22:09:13,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:09:13,999 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:09:14,003 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 (8)] Ended with exit code 0 [2023-12-24 22:09:14,203 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 22:09:14,204 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:09:14,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:09:14,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2091245804, now seen corresponding path program 3 times [2023-12-24 22:09:14,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:09:14,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173678864] [2023-12-24 22:09:14,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:09:14,205 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 22:09:14,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:09:14,206 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 22:09:14,207 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 22:09:14,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-24 22:09:14,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:09:14,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 22:09:14,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:09:14,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 181 proven. 1 refuted. 0 times theorem prover too weak. 6166 trivial. 0 not checked. [2023-12-24 22:09:14,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:09:14,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 181 proven. 1 refuted. 0 times theorem prover too weak. 6166 trivial. 0 not checked. [2023-12-24 22:09:14,444 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:09:14,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173678864] [2023-12-24 22:09:14,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173678864] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:09:14,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:09:14,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-24 22:09:14,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853154957] [2023-12-24 22:09:14,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:09:14,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 22:09:14,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:09:14,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 22:09:14,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-24 22:09:14,446 INFO L87 Difference]: Start difference. First operand 883 states and 1299 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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 22:09:14,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:09:14,671 INFO L93 Difference]: Finished difference Result 4192 states and 6265 transitions. [2023-12-24 22:09:14,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 22:09:14,671 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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) Word has length 287 [2023-12-24 22:09:14,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:09:14,688 INFO L225 Difference]: With dead ends: 4192 [2023-12-24 22:09:14,688 INFO L226 Difference]: Without dead ends: 4184 [2023-12-24 22:09:14,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-24 22:09:14,692 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 205 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:09:14,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 252 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:09:14,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4184 states. [2023-12-24 22:09:14,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4184 to 925. [2023-12-24 22:09:14,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 924 states have (on average 1.4805194805194806) internal successors, (1368), 924 states have internal predecessors, (1368), 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 22:09:14,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1368 transitions. [2023-12-24 22:09:14,755 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1368 transitions. Word has length 287 [2023-12-24 22:09:14,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:09:14,756 INFO L495 AbstractCegarLoop]: Abstraction has 925 states and 1368 transitions. [2023-12-24 22:09:14,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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 22:09:14,756 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1368 transitions. [2023-12-24 22:09:14,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2023-12-24 22:09:14,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:09:14,759 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:09:14,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-24 22:09:14,962 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 22:09:14,962 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:09:14,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:09:14,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1776212369, now seen corresponding path program 4 times [2023-12-24 22:09:14,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:09:14,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226735079] [2023-12-24 22:09:14,964 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:09:14,964 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 22:09:14,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:09:14,965 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 22:09:14,984 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 22:09:15,182 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:09:15,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:09:15,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-24 22:09:15,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:09:16,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6510 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 5429 trivial. 0 not checked. [2023-12-24 22:09:16,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:09:20,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6510 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 5429 trivial. 0 not checked. [2023-12-24 22:09:20,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:09:20,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226735079] [2023-12-24 22:09:20,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226735079] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:09:20,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:09:20,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-24 22:09:20,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201341865] [2023-12-24 22:09:20,708 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:09:20,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-24 22:09:20,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:09:20,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-24 22:09:20,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-24 22:09:20,711 INFO L87 Difference]: Start difference. First operand 925 states and 1368 transitions. Second operand has 96 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 95 states have internal predecessors, (110), 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 22:10:14,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:10:14,323 INFO L93 Difference]: Finished difference Result 4876 states and 7633 transitions. [2023-12-24 22:10:14,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-24 22:10:14,325 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 95 states have internal predecessors, (110), 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) Word has length 299 [2023-12-24 22:10:14,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:10:14,335 INFO L225 Difference]: With dead ends: 4876 [2023-12-24 22:10:14,335 INFO L226 Difference]: Without dead ends: 3999 [2023-12-24 22:10:14,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 45.7s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-24 22:10:14,341 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 62764 mSDsluCounter, 39885 mSDsCounter, 0 mSdLazyCounter, 22741 mSolverCounterSat, 2464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62764 SdHoareTripleChecker+Valid, 40737 SdHoareTripleChecker+Invalid, 25205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2464 IncrementalHoareTripleChecker+Valid, 22741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2023-12-24 22:10:14,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62764 Valid, 40737 Invalid, 25205 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2464 Valid, 22741 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2023-12-24 22:10:14,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3999 states. [2023-12-24 22:10:14,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3999 to 1837. [2023-12-24 22:10:14,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1837 states, 1836 states have (on average 1.477124183006536) internal successors, (2712), 1836 states have internal predecessors, (2712), 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 22:10:14,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 2712 transitions. [2023-12-24 22:10:14,440 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 2712 transitions. Word has length 299 [2023-12-24 22:10:14,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:10:14,441 INFO L495 AbstractCegarLoop]: Abstraction has 1837 states and 2712 transitions. [2023-12-24 22:10:14,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 95 states have internal predecessors, (110), 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 22:10:14,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 2712 transitions. [2023-12-24 22:10:14,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2023-12-24 22:10:14,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:10:14,448 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 94, 94, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:10:14,459 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 (10)] Ended with exit code 0 [2023-12-24 22:10:14,656 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 22:10:14,656 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:10:14,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:10:14,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1983591569, now seen corresponding path program 5 times [2023-12-24 22:10:14,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:10:14,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777513123] [2023-12-24 22:10:14,659 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 22:10:14,659 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:10:14,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:10:14,660 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 22:10:14,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 22:10:23,307 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2023-12-24 22:10:23,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:10:23,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 122 conjunts are in the unsatisfiable core [2023-12-24 22:10:23,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:10:26,971 INFO L134 CoverageAnalysis]: Checked inductivity of 26814 backedges. 0 proven. 22321 refuted. 0 times theorem prover too weak. 4493 trivial. 0 not checked. [2023-12-24 22:10:26,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:10:52,988 INFO L134 CoverageAnalysis]: Checked inductivity of 26814 backedges. 0 proven. 22321 refuted. 0 times theorem prover too weak. 4493 trivial. 0 not checked. [2023-12-24 22:10:52,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:10:52,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777513123] [2023-12-24 22:10:52,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777513123] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:10:52,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:10:52,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 98] total 193 [2023-12-24 22:10:52,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265187190] [2023-12-24 22:10:52,989 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:10:52,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2023-12-24 22:10:52,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:10:52,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2023-12-24 22:10:52,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9504, Invalid=27552, Unknown=0, NotChecked=0, Total=37056 [2023-12-24 22:10:53,000 INFO L87 Difference]: Start difference. First operand 1837 states and 2712 transitions. Second operand has 193 states, 193 states have (on average 4.963730569948186) internal successors, (958), 193 states have internal predecessors, (958), 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 22:18:34,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:18:34,719 INFO L93 Difference]: Finished difference Result 9724 states and 15217 transitions. [2023-12-24 22:18:34,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2023-12-24 22:18:34,736 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 4.963730569948186) internal successors, (958), 193 states have internal predecessors, (958), 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) Word has length 587 [2023-12-24 22:18:34,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:18:34,759 INFO L225 Difference]: With dead ends: 9724 [2023-12-24 22:18:34,759 INFO L226 Difference]: Without dead ends: 7983 [2023-12-24 22:18:34,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1362 GetRequests, 1076 SyntacticMatches, 0 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4558 ImplicationChecksByTransitivity, 430.1s TimeCoverageRelationStatistics Valid=27838, Invalid=54818, Unknown=0, NotChecked=0, Total=82656 [2023-12-24 22:18:34,767 INFO L413 NwaCegarLoop]: 1716 mSDtfsCounter, 211616 mSDsluCounter, 162561 mSDsCounter, 0 mSdLazyCounter, 91469 mSolverCounterSat, 10025 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211616 SdHoareTripleChecker+Valid, 164277 SdHoareTripleChecker+Invalid, 101494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 10025 IncrementalHoareTripleChecker+Valid, 91469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.9s IncrementalHoareTripleChecker+Time [2023-12-24 22:18:34,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211616 Valid, 164277 Invalid, 101494 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [10025 Valid, 91469 Invalid, 0 Unknown, 0 Unchecked, 46.9s Time] [2023-12-24 22:18:34,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7983 states. [2023-12-24 22:18:34,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7983 to 3661. [2023-12-24 22:18:34,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3661 states, 3660 states have (on average 1.4754098360655739) internal successors, (5400), 3660 states have internal predecessors, (5400), 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 22:18:34,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3661 states to 3661 states and 5400 transitions. [2023-12-24 22:18:34,951 INFO L78 Accepts]: Start accepts. Automaton has 3661 states and 5400 transitions. Word has length 587 [2023-12-24 22:18:34,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:18:34,952 INFO L495 AbstractCegarLoop]: Abstraction has 3661 states and 5400 transitions. [2023-12-24 22:18:34,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 4.963730569948186) internal successors, (958), 193 states have internal predecessors, (958), 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 22:18:34,952 INFO L276 IsEmpty]: Start isEmpty. Operand 3661 states and 5400 transitions. [2023-12-24 22:18:34,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1164 [2023-12-24 22:18:34,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:18:34,980 INFO L195 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 190, 190, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:18:34,997 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 (11)] Forceful destruction successful, exit code 0 [2023-12-24 22:18:35,193 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 22:18:35,194 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:18:35,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:18:35,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1291720047, now seen corresponding path program 6 times [2023-12-24 22:18:35,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:18:35,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249230587] [2023-12-24 22:18:35,195 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 22:18:35,195 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 22:18:35,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:18:35,196 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 22:18:35,209 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 22:18:35,502 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-12-24 22:18:35,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:18:35,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 22:18:35,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:18:35,623 INFO L134 CoverageAnalysis]: Checked inductivity of 108894 backedges. 1324 proven. 28 refuted. 0 times theorem prover too weak. 107542 trivial. 0 not checked. [2023-12-24 22:18:35,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:18:35,792 INFO L134 CoverageAnalysis]: Checked inductivity of 108894 backedges. 1324 proven. 28 refuted. 0 times theorem prover too weak. 107542 trivial. 0 not checked. [2023-12-24 22:18:35,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:18:35,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249230587] [2023-12-24 22:18:35,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249230587] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:18:35,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:18:35,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-24 22:18:35,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707137633] [2023-12-24 22:18:35,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:18:35,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 22:18:35,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:18:35,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 22:18:35,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-12-24 22:18:35,795 INFO L87 Difference]: Start difference. First operand 3661 states and 5400 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 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 22:18:37,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:18:37,782 INFO L93 Difference]: Finished difference Result 37804 states and 56620 transitions. [2023-12-24 22:18:37,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 22:18:37,783 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 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) Word has length 1163 [2023-12-24 22:18:37,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:18:37,862 INFO L225 Difference]: With dead ends: 37804 [2023-12-24 22:18:37,862 INFO L226 Difference]: Without dead ends: 37790 [2023-12-24 22:18:37,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2338 GetRequests, 2316 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=379, Unknown=0, NotChecked=0, Total=552 [2023-12-24 22:18:37,871 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 538 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 22:18:37,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 816 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 22:18:37,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37790 states. [2023-12-24 22:18:38,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37790 to 3745. [2023-12-24 22:18:38,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3745 states, 3744 states have (on average 1.4791666666666667) internal successors, (5538), 3744 states have internal predecessors, (5538), 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 22:18:38,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3745 states to 3745 states and 5538 transitions. [2023-12-24 22:18:38,356 INFO L78 Accepts]: Start accepts. Automaton has 3745 states and 5538 transitions. Word has length 1163 [2023-12-24 22:18:38,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:18:38,357 INFO L495 AbstractCegarLoop]: Abstraction has 3745 states and 5538 transitions. [2023-12-24 22:18:38,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 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 22:18:38,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3745 states and 5538 transitions. [2023-12-24 22:18:38,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1188 [2023-12-24 22:18:38,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:18:38,371 INFO L195 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 190, 190, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:18:38,388 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 22:18:38,575 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 22:18:38,576 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:18:38,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:18:38,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1771887349, now seen corresponding path program 7 times [2023-12-24 22:18:38,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:18:38,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512147625] [2023-12-24 22:18:38,577 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 22:18:38,577 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 22:18:38,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:18:38,578 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 22:18:38,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 22:18:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:18:39,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 2230 conjuncts, 192 conjunts are in the unsatisfiable core [2023-12-24 22:18:39,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:18:53,034 INFO L134 CoverageAnalysis]: Checked inductivity of 110190 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 92045 trivial. 0 not checked. [2023-12-24 22:18:53,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:20:04,184 INFO L134 CoverageAnalysis]: Checked inductivity of 110190 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 92045 trivial. 0 not checked. [2023-12-24 22:20:04,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:20:04,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512147625] [2023-12-24 22:20:04,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512147625] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:20:04,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:20:04,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192] total 383 [2023-12-24 22:20:04,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428106274] [2023-12-24 22:20:04,185 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:20:04,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-12-24 22:20:04,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:20:04,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-12-24 22:20:04,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37246, Invalid=109826, Unknown=0, NotChecked=0, Total=147072 [2023-12-24 22:20:04,196 INFO L87 Difference]: Start difference. First operand 3745 states and 5538 transitions. Second operand has 384 states, 384 states have (on average 1.0364583333333333) internal successors, (398), 383 states have internal predecessors, (398), 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 22:20:48,632 WARN L293 SmtUtils]: Spent 9.06s on a formula simplification. DAG size of input: 574 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:21:14,317 WARN L293 SmtUtils]: Spent 8.79s on a formula simplification. DAG size of input: 571 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:21:39,034 WARN L293 SmtUtils]: Spent 8.31s on a formula simplification. DAG size of input: 568 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:22:03,282 WARN L293 SmtUtils]: Spent 7.71s on a formula simplification. DAG size of input: 565 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:22:28,424 WARN L293 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 562 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:22:55,711 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification. DAG size of input: 559 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 22:23:22,852 WARN L293 SmtUtils]: Spent 7.89s on a formula simplification. DAG size of input: 556 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-24 22:23:36,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2023-12-24 22:23:36,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2380 GetRequests, 1990 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 262.9s TimeCoverageRelationStatistics Valid=39934, Invalid=112556, Unknown=0, NotChecked=0, Total=152490 [2023-12-24 22:23:36,351 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36680 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2023-12-24 22:23:36,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 36681 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 36680 Invalid, 0 Unknown, 0 Unchecked, 17.8s Time] [2023-12-24 22:23:36,352 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 22:23:36,365 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 22:23:36,365 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 22:23:36,374 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 22:23:36,553 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 22:23:36,553 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (3745states) and FLOYD_HOARE automaton (currently 200 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 391 known predicates. [2023-12-24 22:23:36,556 INFO L445 BasicCegarLoop]: Path program histogram: [7, 3, 1, 1] [2023-12-24 22:23:36,559 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 22:23:36,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 10:23:36 BoogieIcfgContainer [2023-12-24 22:23:36,561 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 22:23:36,561 INFO L158 Benchmark]: Toolchain (without parser) took 878436.43ms. Allocated memory was 239.1MB in the beginning and 998.2MB in the end (delta: 759.2MB). Free memory was 187.5MB in the beginning and 476.3MB in the end (delta: -288.7MB). Peak memory consumption was 471.1MB. Max. memory is 8.0GB. [2023-12-24 22:23:36,561 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 172.0MB. Free memory is still 117.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 22:23:36,561 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.24ms. Allocated memory is still 239.1MB. Free memory was 187.0MB in the beginning and 173.4MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-24 22:23:36,561 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.83ms. Allocated memory is still 239.1MB. Free memory was 173.4MB in the beginning and 171.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 22:23:36,562 INFO L158 Benchmark]: Boogie Preprocessor took 55.43ms. Allocated memory is still 239.1MB. Free memory was 171.3MB in the beginning and 168.1MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 22:23:36,562 INFO L158 Benchmark]: RCFGBuilder took 436.35ms. Allocated memory is still 239.1MB. Free memory was 168.1MB in the beginning and 147.7MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-24 22:23:36,562 INFO L158 Benchmark]: TraceAbstraction took 877631.33ms. Allocated memory was 239.1MB in the beginning and 998.2MB in the end (delta: 759.2MB). Free memory was 147.2MB in the beginning and 476.3MB in the end (delta: -329.1MB). Peak memory consumption was 431.3MB. Max. memory is 8.0GB. [2023-12-24 22:23:36,563 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 172.0MB. Free memory is still 117.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 279.24ms. Allocated memory is still 239.1MB. Free memory was 187.0MB in the beginning and 173.4MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.83ms. Allocated memory is still 239.1MB. Free memory was 173.4MB in the beginning and 171.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 55.43ms. Allocated memory is still 239.1MB. Free memory was 171.3MB in the beginning and 168.1MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 436.35ms. Allocated memory is still 239.1MB. Free memory was 168.1MB in the beginning and 147.7MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 877631.33ms. Allocated memory was 239.1MB in the beginning and 998.2MB in the end (delta: 759.2MB). Free memory was 147.2MB in the beginning and 476.3MB in the end (delta: -329.1MB). Peak memory consumption was 431.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 15]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 15). Cancelled while NwaCegarLoop was constructing difference of abstraction (3745states) and FLOYD_HOARE automaton (currently 200 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 391 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 877.6s, OverallIterations: 12, TraceHistogramMax: 190, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.1s, AutomataDifference: 740.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 293425 SdHoareTripleChecker+Valid, 81.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 293425 mSDsluCounter, 219291 SdHoareTripleChecker+Invalid, 69.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 215702 mSDsCounter, 13256 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 158592 IncrementalHoareTripleChecker+Invalid, 171848 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13256 mSolverCounterUnsat, 3589 mSDtfsCounter, 158592 mSolverCounterSat, 0.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7923 GetRequests, 6952 SyntacticMatches, 0 SemanticMatches, 970 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5944 ImplicationChecksByTransitivity, 746.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3745occurred in iteration=11, InterpolantAutomatonStates: 415, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 44094 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 9.4s SatisfiabilityAnalysisTime, 122.7s InterpolantComputationTime, 3862 NumberOfCodeBlocks, 2467 NumberOfCodeBlocksAsserted, 121 NumberOfCheckSat, 7622 ConstructedInterpolants, 0 QuantifiedInterpolants, 15790 SizeOfPredicates, 6 NumberOfNonLiveVariables, 4925 ConjunctsInSsa, 427 ConjunctsInUnsatCore, 21 InterpolantComputations, 3 PerfectInterpolantSequences, 437608/521398 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown