/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/recursified_loop-simple/recursified_deep-nested.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 17:48:23,470 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 17:48:23,537 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 17:48:23,540 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 17:48:23,541 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 17:48:23,558 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 17:48:23,558 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 17:48:23,559 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 17:48:23,559 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 17:48:23,560 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 17:48:23,560 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 17:48:23,560 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 17:48:23,561 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 17:48:23,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 17:48:23,561 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 17:48:23,562 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 17:48:23,562 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 17:48:23,562 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 17:48:23,563 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 17:48:23,563 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 17:48:23,563 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 17:48:23,568 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 17:48:23,568 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 17:48:23,568 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 17:48:23,569 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 17:48:23,569 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 17:48:23,569 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 17:48:23,569 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 17:48:23,570 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 17:48:23,570 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 17:48:23,570 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 17:48:23,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 17:48:23,571 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 17:48:23,571 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 17:48:23,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:48:23,576 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 17:48:23,577 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 17:48:23,577 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 17:48:23,577 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 17:48:23,577 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 17:48:23,578 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 17:48:23,578 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 17:48:23,578 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 17:48:23,578 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 17:48:23,578 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 17:48:23,578 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 17:48:23,579 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 17:48:23,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 17:48:23,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 17:48:23,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 17:48:23,820 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 17:48:23,821 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 17:48:23,823 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursified_loop-simple/recursified_deep-nested.c [2023-12-16 17:48:24,972 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 17:48:25,147 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 17:48:25,148 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-simple/recursified_deep-nested.c [2023-12-16 17:48:25,154 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f4e85fcd/cdfac430e1ad47549d54a623e3e02866/FLAG17b1be7e7 [2023-12-16 17:48:25,165 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f4e85fcd/cdfac430e1ad47549d54a623e3e02866 [2023-12-16 17:48:25,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 17:48:25,168 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 17:48:25,169 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 17:48:25,169 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 17:48:25,173 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 17:48:25,173 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:48:25" (1/1) ... [2023-12-16 17:48:25,174 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59265f95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:25, skipping insertion in model container [2023-12-16 17:48:25,175 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:48:25" (1/1) ... [2023-12-16 17:48:25,195 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 17:48:25,328 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-simple/recursified_deep-nested.c[1440,1453] [2023-12-16 17:48:25,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:48:25,374 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 17:48:25,392 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-simple/recursified_deep-nested.c[1440,1453] [2023-12-16 17:48:25,411 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:48:25,429 INFO L206 MainTranslator]: Completed translation [2023-12-16 17:48:25,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:25 WrapperNode [2023-12-16 17:48:25,432 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 17:48:25,433 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 17:48:25,433 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 17:48:25,433 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 17:48:25,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:25" (1/1) ... [2023-12-16 17:48:25,461 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:25" (1/1) ... [2023-12-16 17:48:25,477 INFO L138 Inliner]: procedures = 18, calls = 71, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2023-12-16 17:48:25,477 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 17:48:25,478 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 17:48:25,478 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 17:48:25,478 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 17:48:25,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:25" (1/1) ... [2023-12-16 17:48:25,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:25" (1/1) ... [2023-12-16 17:48:25,493 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:25" (1/1) ... [2023-12-16 17:48:25,526 INFO L175 MemorySlicer]: Split 38 memory accesses to 7 slices as follows [2, 6, 6, 6, 5, 7, 6]. 18 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 11 writes are split as follows [0, 2, 2, 2, 2, 1, 2]. [2023-12-16 17:48:25,526 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:25" (1/1) ... [2023-12-16 17:48:25,527 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:25" (1/1) ... [2023-12-16 17:48:25,536 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:25" (1/1) ... [2023-12-16 17:48:25,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:25" (1/1) ... [2023-12-16 17:48:25,540 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:25" (1/1) ... [2023-12-16 17:48:25,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:25" (1/1) ... [2023-12-16 17:48:25,545 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 17:48:25,550 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 17:48:25,551 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 17:48:25,551 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 17:48:25,551 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:25" (1/1) ... [2023-12-16 17:48:25,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:48:25,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 17:48:25,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 17:48:25,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 17:48:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_12_to_13_0 [2023-12-16 17:48:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_12_to_13_0 [2023-12-16 17:48:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 17:48:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_13_to_14_0 [2023-12-16 17:48:25,615 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_13_to_14_0 [2023-12-16 17:48:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_11_to_12_0 [2023-12-16 17:48:25,616 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_11_to_12_0 [2023-12-16 17:48:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 17:48:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 17:48:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-16 17:48:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-16 17:48:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-16 17:48:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-16 17:48:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-16 17:48:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_14_to_16_0 [2023-12-16 17:48:25,617 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_14_to_16_0 [2023-12-16 17:48:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_10_to_11_0 [2023-12-16 17:48:25,617 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_10_to_11_0 [2023-12-16 17:48:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 17:48:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 17:48:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 17:48:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-16 17:48:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-16 17:48:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-16 17:48:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-16 17:48:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-12-16 17:48:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 17:48:25,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 17:48:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 17:48:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 17:48:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 17:48:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-16 17:48:25,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-16 17:48:25,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-16 17:48:25,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-16 17:48:25,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-12-16 17:48:25,775 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 17:48:25,777 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 17:48:26,116 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 17:48:26,147 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 17:48:26,147 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-16 17:48:26,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:48:26 BoogieIcfgContainer [2023-12-16 17:48:26,148 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 17:48:26,150 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 17:48:26,150 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 17:48:26,153 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 17:48:26,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:48:25" (1/3) ... [2023-12-16 17:48:26,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40673bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:48:26, skipping insertion in model container [2023-12-16 17:48:26,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:25" (2/3) ... [2023-12-16 17:48:26,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40673bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:48:26, skipping insertion in model container [2023-12-16 17:48:26,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:48:26" (3/3) ... [2023-12-16 17:48:26,155 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_deep-nested.c [2023-12-16 17:48:26,171 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 17:48:26,171 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 17:48:26,206 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 17:48:26,212 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;@4136cfe4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 17:48:26,212 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 17:48:26,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 37 states have internal predecessors, (42), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-16 17:48:26,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-16 17:48:26,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:26,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:26,223 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:26,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:26,228 INFO L85 PathProgramCache]: Analyzing trace with hash 838024083, now seen corresponding path program 1 times [2023-12-16 17:48:26,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:26,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767567094] [2023-12-16 17:48:26,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:48:26,239 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:48:26,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:26,244 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:48:26,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 17:48:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:48:26,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-16 17:48:26,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:26,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 17:48:26,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 17:48:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:48:26,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:48:27,000 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:48:27,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767567094] [2023-12-16 17:48:27,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767567094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:48:27,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:48:27,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-16 17:48:27,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965150757] [2023-12-16 17:48:27,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:48:27,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 17:48:27,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:48:27,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 17:48:27,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2023-12-16 17:48:27,040 INFO L87 Difference]: Start difference. First operand has 48 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 37 states have internal predecessors, (42), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 17:48:28,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:48:28,497 INFO L93 Difference]: Finished difference Result 139 states and 199 transitions. [2023-12-16 17:48:28,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 17:48:28,503 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-16 17:48:28,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:48:28,509 INFO L225 Difference]: With dead ends: 139 [2023-12-16 17:48:28,509 INFO L226 Difference]: Without dead ends: 89 [2023-12-16 17:48:28,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2023-12-16 17:48:28,515 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 85 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:48:28,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 437 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 17:48:28,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-16 17:48:28,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 77. [2023-12-16 17:48:28,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 62 states have internal predecessors, (71), 15 states have call successors, (15), 9 states have call predecessors, (15), 8 states have return successors, (15), 11 states have call predecessors, (15), 13 states have call successors, (15) [2023-12-16 17:48:28,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 101 transitions. [2023-12-16 17:48:28,557 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 101 transitions. Word has length 25 [2023-12-16 17:48:28,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:48:28,557 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 101 transitions. [2023-12-16 17:48:28,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 17:48:28,557 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 101 transitions. [2023-12-16 17:48:28,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-16 17:48:28,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:28,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:28,570 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 [2023-12-16 17:48:28,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:48:28,764 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:28,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:28,765 INFO L85 PathProgramCache]: Analyzing trace with hash -936983279, now seen corresponding path program 1 times [2023-12-16 17:48:28,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:28,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884836991] [2023-12-16 17:48:28,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:48:28,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:48:28,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:28,768 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:48:28,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 17:48:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:48:28,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-16 17:48:28,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:28,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-12-16 17:48:29,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 17:48:29,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:48:29,303 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:48:29,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:48:29,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884836991] [2023-12-16 17:48:29,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884836991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:48:29,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:48:29,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-16 17:48:29,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995839563] [2023-12-16 17:48:29,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:48:29,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 17:48:29,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:48:29,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 17:48:29,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2023-12-16 17:48:29,307 INFO L87 Difference]: Start difference. First operand 77 states and 101 transitions. Second operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 17:48:30,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:48:30,595 INFO L93 Difference]: Finished difference Result 113 states and 152 transitions. [2023-12-16 17:48:30,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 17:48:30,596 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-16 17:48:30,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:48:30,599 INFO L225 Difference]: With dead ends: 113 [2023-12-16 17:48:30,599 INFO L226 Difference]: Without dead ends: 111 [2023-12-16 17:48:30,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2023-12-16 17:48:30,601 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 54 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:48:30,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 401 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 17:48:30,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-12-16 17:48:30,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 103. [2023-12-16 17:48:30,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 77 states have (on average 1.3636363636363635) internal successors, (105), 86 states have internal predecessors, (105), 15 states have call successors, (15), 11 states have call predecessors, (15), 10 states have return successors, (17), 11 states have call predecessors, (17), 13 states have call successors, (17) [2023-12-16 17:48:30,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 137 transitions. [2023-12-16 17:48:30,619 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 137 transitions. Word has length 25 [2023-12-16 17:48:30,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:48:30,619 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 137 transitions. [2023-12-16 17:48:30,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 17:48:30,620 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 137 transitions. [2023-12-16 17:48:30,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-16 17:48:30,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:30,621 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:30,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 17:48:30,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:48:30,832 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:30,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:30,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1330212595, now seen corresponding path program 1 times [2023-12-16 17:48:30,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:30,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111579526] [2023-12-16 17:48:30,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:48:30,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:48:30,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:30,835 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:48:30,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 17:48:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:48:31,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-16 17:48:31,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:31,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 17:48:31,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 17:48:31,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-16 17:48:31,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:48:31,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:48:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:48:31,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:48:31,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111579526] [2023-12-16 17:48:31,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111579526] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:48:31,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:48:31,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2023-12-16 17:48:31,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143754022] [2023-12-16 17:48:31,703 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:48:31,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 17:48:31,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:48:31,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 17:48:31,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2023-12-16 17:48:31,705 INFO L87 Difference]: Start difference. First operand 103 states and 137 transitions. Second operand has 20 states, 16 states have (on average 3.25) internal successors, (52), 14 states have internal predecessors, (52), 7 states have call successors, (9), 7 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 17:48:33,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:48:33,972 INFO L93 Difference]: Finished difference Result 370 states and 517 transitions. [2023-12-16 17:48:33,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-16 17:48:33,972 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 3.25) internal successors, (52), 14 states have internal predecessors, (52), 7 states have call successors, (9), 7 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-16 17:48:33,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:48:33,975 INFO L225 Difference]: With dead ends: 370 [2023-12-16 17:48:33,975 INFO L226 Difference]: Without dead ends: 269 [2023-12-16 17:48:33,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=227, Invalid=1255, Unknown=0, NotChecked=0, Total=1482 [2023-12-16 17:48:33,978 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 150 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 17:48:33,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 727 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 17:48:33,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-12-16 17:48:34,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 239. [2023-12-16 17:48:34,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 191 states have (on average 1.3350785340314135) internal successors, (255), 208 states have internal predecessors, (255), 23 states have call successors, (23), 21 states have call predecessors, (23), 24 states have return successors, (39), 17 states have call predecessors, (39), 21 states have call successors, (39) [2023-12-16 17:48:34,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 317 transitions. [2023-12-16 17:48:34,005 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 317 transitions. Word has length 37 [2023-12-16 17:48:34,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:48:34,006 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 317 transitions. [2023-12-16 17:48:34,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 3.25) internal successors, (52), 14 states have internal predecessors, (52), 7 states have call successors, (9), 7 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 17:48:34,006 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 317 transitions. [2023-12-16 17:48:34,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-16 17:48:34,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:34,009 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:34,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 17:48:34,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:48:34,216 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:34,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:34,219 INFO L85 PathProgramCache]: Analyzing trace with hash -329660923, now seen corresponding path program 1 times [2023-12-16 17:48:34,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:34,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858063494] [2023-12-16 17:48:34,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:48:34,220 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:48:34,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:34,221 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:48:34,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 17:48:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:48:34,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-16 17:48:34,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:34,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-12-16 17:48:34,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 17:48:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 17:48:34,823 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:48:34,823 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:48:34,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858063494] [2023-12-16 17:48:34,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [858063494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:48:34,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:48:34,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-16 17:48:34,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869385646] [2023-12-16 17:48:34,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:48:34,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 17:48:34,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:48:34,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 17:48:34,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-16 17:48:34,826 INFO L87 Difference]: Start difference. First operand 239 states and 317 transitions. Second operand has 15 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 9 states have internal predecessors, (28), 6 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:48:36,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:48:36,497 INFO L93 Difference]: Finished difference Result 502 states and 676 transitions. [2023-12-16 17:48:36,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 17:48:36,497 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 9 states have internal predecessors, (28), 6 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2023-12-16 17:48:36,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:48:36,500 INFO L225 Difference]: With dead ends: 502 [2023-12-16 17:48:36,500 INFO L226 Difference]: Without dead ends: 257 [2023-12-16 17:48:36,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2023-12-16 17:48:36,502 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 69 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:48:36,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 370 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 17:48:36,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-12-16 17:48:36,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 239. [2023-12-16 17:48:36,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 191 states have (on average 1.3141361256544504) internal successors, (251), 204 states have internal predecessors, (251), 23 states have call successors, (23), 21 states have call predecessors, (23), 24 states have return successors, (39), 17 states have call predecessors, (39), 21 states have call successors, (39) [2023-12-16 17:48:36,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 313 transitions. [2023-12-16 17:48:36,530 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 313 transitions. Word has length 46 [2023-12-16 17:48:36,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:48:36,530 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 313 transitions. [2023-12-16 17:48:36,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 9 states have internal predecessors, (28), 6 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:48:36,530 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 313 transitions. [2023-12-16 17:48:36,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 17:48:36,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:36,532 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:36,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-16 17:48:36,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:48:36,739 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:36,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:36,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1216849372, now seen corresponding path program 1 times [2023-12-16 17:48:36,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:36,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330212660] [2023-12-16 17:48:36,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:48:36,741 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:48:36,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:36,742 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:48:36,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 17:48:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:48:36,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-16 17:48:36,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:36,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-12-16 17:48:37,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 17:48:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-16 17:48:37,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:48:38,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-12-16 17:48:44,147 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 17:48:44,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:48:44,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330212660] [2023-12-16 17:48:44,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330212660] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:48:44,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:48:44,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 34 [2023-12-16 17:48:44,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078563205] [2023-12-16 17:48:44,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:48:44,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-16 17:48:44,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:48:44,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-16 17:48:44,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1085, Unknown=1, NotChecked=0, Total=1190 [2023-12-16 17:48:44,151 INFO L87 Difference]: Start difference. First operand 239 states and 313 transitions. Second operand has 35 states, 29 states have (on average 2.206896551724138) internal successors, (64), 23 states have internal predecessors, (64), 13 states have call successors, (15), 12 states have call predecessors, (15), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 17:48:48,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:48:48,647 INFO L93 Difference]: Finished difference Result 494 states and 664 transitions. [2023-12-16 17:48:48,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-16 17:48:48,647 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 29 states have (on average 2.206896551724138) internal successors, (64), 23 states have internal predecessors, (64), 13 states have call successors, (15), 12 states have call predecessors, (15), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 60 [2023-12-16 17:48:48,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:48:48,651 INFO L225 Difference]: With dead ends: 494 [2023-12-16 17:48:48,652 INFO L226 Difference]: Without dead ends: 249 [2023-12-16 17:48:48,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=245, Invalid=2406, Unknown=1, NotChecked=0, Total=2652 [2023-12-16 17:48:48,654 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 132 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:48:48,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 638 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-16 17:48:48,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-12-16 17:48:48,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 239. [2023-12-16 17:48:48,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 191 states have (on average 1.3036649214659686) internal successors, (249), 202 states have internal predecessors, (249), 23 states have call successors, (23), 21 states have call predecessors, (23), 24 states have return successors, (41), 17 states have call predecessors, (41), 21 states have call successors, (41) [2023-12-16 17:48:48,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 313 transitions. [2023-12-16 17:48:48,682 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 313 transitions. Word has length 60 [2023-12-16 17:48:48,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:48:48,682 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 313 transitions. [2023-12-16 17:48:48,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 29 states have (on average 2.206896551724138) internal successors, (64), 23 states have internal predecessors, (64), 13 states have call successors, (15), 12 states have call predecessors, (15), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 17:48:48,682 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 313 transitions. [2023-12-16 17:48:48,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-16 17:48:48,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:48,685 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:48,693 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 (6)] Ended with exit code 0 [2023-12-16 17:48:48,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:48:48,891 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:48,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:48,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1807499489, now seen corresponding path program 1 times [2023-12-16 17:48:48,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:48,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468469117] [2023-12-16 17:48:48,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:48:48,892 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:48:48,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:48,893 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:48:48,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 17:48:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:48:49,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 79 conjunts are in the unsatisfiable core [2023-12-16 17:48:49,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:49,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 17:48:49,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 17:48:49,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-16 17:48:49,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-16 17:48:49,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-16 17:48:49,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-16 17:48:49,809 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 4 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:48:49,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:48:50,659 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 4 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:48:50,659 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:48:50,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468469117] [2023-12-16 17:48:50,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468469117] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:48:50,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:48:50,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 32 [2023-12-16 17:48:50,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003303317] [2023-12-16 17:48:50,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:48:50,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-16 17:48:50,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:48:50,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-16 17:48:50,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2023-12-16 17:48:50,662 INFO L87 Difference]: Start difference. First operand 239 states and 313 transitions. Second operand has 32 states, 28 states have (on average 4.214285714285714) internal successors, (118), 20 states have internal predecessors, (118), 13 states have call successors, (15), 13 states have call predecessors, (15), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 17:48:58,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:48:58,698 INFO L93 Difference]: Finished difference Result 908 states and 1242 transitions. [2023-12-16 17:48:58,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-12-16 17:48:58,699 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 4.214285714285714) internal successors, (118), 20 states have internal predecessors, (118), 13 states have call successors, (15), 13 states have call predecessors, (15), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-16 17:48:58,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:48:58,703 INFO L225 Difference]: With dead ends: 908 [2023-12-16 17:48:58,703 INFO L226 Difference]: Without dead ends: 663 [2023-12-16 17:48:58,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2378 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1424, Invalid=7696, Unknown=0, NotChecked=0, Total=9120 [2023-12-16 17:48:58,706 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 615 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-16 17:48:58,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 1688 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-16 17:48:58,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2023-12-16 17:48:58,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 589. [2023-12-16 17:48:58,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 485 states have (on average 1.309278350515464) internal successors, (635), 512 states have internal predecessors, (635), 45 states have call successors, (45), 43 states have call predecessors, (45), 58 states have return successors, (99), 37 states have call predecessors, (99), 43 states have call successors, (99) [2023-12-16 17:48:58,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 779 transitions. [2023-12-16 17:48:58,759 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 779 transitions. Word has length 73 [2023-12-16 17:48:58,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:48:58,759 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 779 transitions. [2023-12-16 17:48:58,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 4.214285714285714) internal successors, (118), 20 states have internal predecessors, (118), 13 states have call successors, (15), 13 states have call predecessors, (15), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 17:48:58,759 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 779 transitions. [2023-12-16 17:48:58,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 17:48:58,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:58,761 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:58,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 17:48:58,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:48:58,969 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:58,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:58,970 INFO L85 PathProgramCache]: Analyzing trace with hash -358602815, now seen corresponding path program 1 times [2023-12-16 17:48:58,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:58,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557708480] [2023-12-16 17:48:58,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:48:58,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:48:58,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:58,971 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:48:58,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 17:48:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:48:59,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 71 conjunts are in the unsatisfiable core [2023-12-16 17:48:59,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:59,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-12-16 17:48:59,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 17:49:00,214 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 51 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-16 17:49:00,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:01,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-12-16 17:49:06,438 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:06,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557708480] [2023-12-16 17:49:06,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557708480] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 17:49:06,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1417377085] [2023-12-16 17:49:06,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:49:06,440 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 17:49:06,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 17:49:06,470 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 17:49:06,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-16 17:49:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:49:06,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-16 17:49:06,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:07,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 17:49:07,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-16 17:49:07,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 17:49:08,367 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 37 proven. 23 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-16 17:49:08,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:09,022 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-16 17:49:09,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1417377085] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:09,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 17:49:09,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 12] total 45 [2023-12-16 17:49:09,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964338477] [2023-12-16 17:49:09,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:09,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-16 17:49:09,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:09,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-16 17:49:09,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=2322, Unknown=1, NotChecked=0, Total=2450 [2023-12-16 17:49:09,024 INFO L87 Difference]: Start difference. First operand 589 states and 779 transitions. Second operand has 45 states, 37 states have (on average 2.972972972972973) internal successors, (110), 31 states have internal predecessors, (110), 20 states have call successors, (25), 17 states have call predecessors, (25), 5 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-16 17:49:21,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-16 17:49:25,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:25,624 INFO L93 Difference]: Finished difference Result 1449 states and 1970 transitions. [2023-12-16 17:49:25,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-16 17:49:25,625 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 37 states have (on average 2.972972972972973) internal successors, (110), 31 states have internal predecessors, (110), 20 states have call successors, (25), 17 states have call predecessors, (25), 5 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 74 [2023-12-16 17:49:25,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:25,629 INFO L225 Difference]: With dead ends: 1449 [2023-12-16 17:49:25,630 INFO L226 Difference]: Without dead ends: 846 [2023-12-16 17:49:25,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2999 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=817, Invalid=13462, Unknown=1, NotChecked=0, Total=14280 [2023-12-16 17:49:25,636 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 289 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 171 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 2314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:25,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 1455 Invalid, 2314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 2142 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2023-12-16 17:49:25,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2023-12-16 17:49:25,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 732. [2023-12-16 17:49:25,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 587 states have (on average 1.293015332197615) internal successors, (759), 618 states have internal predecessors, (759), 64 states have call successors, (64), 58 states have call predecessors, (64), 80 states have return successors, (175), 58 states have call predecessors, (175), 61 states have call successors, (175) [2023-12-16 17:49:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 998 transitions. [2023-12-16 17:49:25,724 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 998 transitions. Word has length 74 [2023-12-16 17:49:25,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:25,724 INFO L495 AbstractCegarLoop]: Abstraction has 732 states and 998 transitions. [2023-12-16 17:49:25,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 37 states have (on average 2.972972972972973) internal successors, (110), 31 states have internal predecessors, (110), 20 states have call successors, (25), 17 states have call predecessors, (25), 5 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-16 17:49:25,725 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 998 transitions. [2023-12-16 17:49:25,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-16 17:49:25,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:25,728 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:49:25,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-16 17:49:25,939 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 [2023-12-16 17:49:26,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:49:26,134 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:26,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:26,134 INFO L85 PathProgramCache]: Analyzing trace with hash 587904416, now seen corresponding path program 2 times [2023-12-16 17:49:26,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:26,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024018081] [2023-12-16 17:49:26,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:49:26,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:49:26,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:26,136 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:49:26,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-16 17:49:26,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:49:26,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:49:26,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 84 conjunts are in the unsatisfiable core [2023-12-16 17:49:26,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:26,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-12-16 17:49:26,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 17:49:27,802 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 73 proven. 15 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-16 17:49:27,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:29,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 Received shutdown request... [2023-12-16 17:49:32,657 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 (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 17:49:32,674 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 17:49:33,546 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 17:49:33,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 17:49:33,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-16 17:49:33,748 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 [2023-12-16 17:49:33,748 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 89 with TraceHistMax 6,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-16 17:49:33,752 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-12-16 17:49:33,754 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 17:49:33,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:49:33 BoogieIcfgContainer [2023-12-16 17:49:33,758 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 17:49:33,758 INFO L158 Benchmark]: Toolchain (without parser) took 68590.41ms. Allocated memory was 268.4MB in the beginning and 325.1MB in the end (delta: 56.6MB). Free memory was 220.6MB in the beginning and 197.8MB in the end (delta: 22.8MB). Peak memory consumption was 80.0MB. Max. memory is 8.0GB. [2023-12-16 17:49:33,758 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 209.7MB. Free memory is still 160.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 17:49:33,759 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.03ms. Allocated memory is still 268.4MB. Free memory was 220.6MB in the beginning and 208.2MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 17:49:33,759 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.41ms. Allocated memory is still 268.4MB. Free memory was 208.2MB in the beginning and 206.5MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 17:49:33,759 INFO L158 Benchmark]: Boogie Preprocessor took 66.56ms. Allocated memory is still 268.4MB. Free memory was 206.5MB in the beginning and 203.3MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 17:49:33,760 INFO L158 Benchmark]: RCFGBuilder took 597.53ms. Allocated memory is still 268.4MB. Free memory was 203.1MB in the beginning and 231.5MB in the end (delta: -28.4MB). Peak memory consumption was 28.5MB. Max. memory is 8.0GB. [2023-12-16 17:49:33,760 INFO L158 Benchmark]: TraceAbstraction took 67607.95ms. Allocated memory was 268.4MB in the beginning and 325.1MB in the end (delta: 56.6MB). Free memory was 231.0MB in the beginning and 197.8MB in the end (delta: 33.2MB). Peak memory consumption was 89.3MB. Max. memory is 8.0GB. [2023-12-16 17:49:33,761 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 209.7MB. Free memory is still 160.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 263.03ms. Allocated memory is still 268.4MB. Free memory was 220.6MB in the beginning and 208.2MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 44.41ms. Allocated memory is still 268.4MB. Free memory was 208.2MB in the beginning and 206.5MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 66.56ms. Allocated memory is still 268.4MB. Free memory was 206.5MB in the beginning and 203.3MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 597.53ms. Allocated memory is still 268.4MB. Free memory was 203.1MB in the beginning and 231.5MB in the end (delta: -28.4MB). Peak memory consumption was 28.5MB. Max. memory is 8.0GB. * TraceAbstraction took 67607.95ms. Allocated memory was 268.4MB in the beginning and 325.1MB in the end (delta: 56.6MB). Free memory was 231.0MB in the beginning and 197.8MB in the end (delta: 33.2MB). Peak memory consumption was 89.3MB. 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: 32]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 32). Cancelled while NwaCegarLoop was analyzing trace of length 89 with TraceHistMax 6,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 67.6s, OverallIterations: 8, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 35.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 1394 SdHoareTripleChecker+Valid, 21.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1394 mSDsluCounter, 5716 SdHoareTripleChecker+Invalid, 20.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5361 mSDsCounter, 479 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5593 IncrementalHoareTripleChecker+Invalid, 6073 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 479 mSolverCounterUnsat, 355 mSDtfsCounter, 5593 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 895 GetRequests, 530 SyntacticMatches, 1 SemanticMatches, 364 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6129 ImplicationChecksByTransitivity, 28.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=732occurred in iteration=7, InterpolantAutomatonStates: 267, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 266 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 20.0s InterpolantComputationTime, 414 NumberOfCodeBlocks, 414 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 646 ConstructedInterpolants, 90 QuantifiedInterpolants, 6273 SizeOfPredicates, 218 NumberOfNonLiveVariables, 3090 ConjunctsInSsa, 432 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 321/596 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