/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/array-examples/standard_copy6_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 15:42:15,645 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 15:42:15,720 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 15:42:15,723 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 15:42:15,723 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 15:42:15,735 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 15:42:15,735 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 15:42:15,736 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 15:42:15,736 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 15:42:15,736 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 15:42:15,736 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 15:42:15,737 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 15:42:15,737 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 15:42:15,737 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 15:42:15,738 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 15:42:15,738 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 15:42:15,739 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 15:42:15,741 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 15:42:15,742 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 15:42:15,742 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 15:42:15,743 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 15:42:15,743 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 15:42:15,744 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 15:42:15,744 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 15:42:15,744 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 15:42:15,744 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 15:42:15,744 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 15:42:15,744 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 15:42:15,744 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 15:42:15,745 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 15:42:15,745 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 15:42:15,745 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 15:42:15,746 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 15:42:15,746 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 15:42:15,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 15:42:15,746 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 15:42:15,746 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 15:42:15,746 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 15:42:15,746 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 15:42:15,746 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 15:42:15,746 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 15:42:15,747 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 15:42:15,747 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 15:42:15,747 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 15:42:15,748 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 15:42:15,748 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 15:42:15,748 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 15:42:15,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 15:42:15,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 15:42:15,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 15:42:15,962 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 15:42:15,962 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 15:42:15,963 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy6_ground-1.i [2023-12-21 15:42:17,019 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 15:42:17,192 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 15:42:17,193 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy6_ground-1.i [2023-12-21 15:42:17,199 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ec562491/b05eecef944f4ca49c1eb7c8da39461d/FLAG3ae2596ee [2023-12-21 15:42:17,212 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ec562491/b05eecef944f4ca49c1eb7c8da39461d [2023-12-21 15:42:17,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 15:42:17,215 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 15:42:17,217 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 15:42:17,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 15:42:17,220 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 15:42:17,221 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:42:17" (1/1) ... [2023-12-21 15:42:17,222 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3adbbda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:42:17, skipping insertion in model container [2023-12-21 15:42:17,222 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:42:17" (1/1) ... [2023-12-21 15:42:17,239 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 15:42:17,355 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy6_ground-1.i[816,829] [2023-12-21 15:42:17,369 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 15:42:17,376 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 15:42:17,385 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy6_ground-1.i[816,829] [2023-12-21 15:42:17,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 15:42:17,403 INFO L206 MainTranslator]: Completed translation [2023-12-21 15:42:17,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:42:17 WrapperNode [2023-12-21 15:42:17,405 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 15:42:17,406 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 15:42:17,406 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 15:42:17,406 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 15:42:17,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:42:17" (1/1) ... [2023-12-21 15:42:17,424 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:42:17" (1/1) ... [2023-12-21 15:42:17,437 INFO L138 Inliner]: procedures = 18, calls = 44, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 146 [2023-12-21 15:42:17,438 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 15:42:17,438 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 15:42:17,438 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 15:42:17,438 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 15:42:17,445 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:42:17" (1/1) ... [2023-12-21 15:42:17,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:42:17" (1/1) ... [2023-12-21 15:42:17,447 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:42:17" (1/1) ... [2023-12-21 15:42:17,455 INFO L175 MemorySlicer]: Split 18 memory accesses to 8 slices as follows [2, 2, 3, 3, 2, 2, 2, 2]. 17 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 1, 2, 1, 1, 1, 1]. [2023-12-21 15:42:17,456 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:42:17" (1/1) ... [2023-12-21 15:42:17,456 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:42:17" (1/1) ... [2023-12-21 15:42:17,461 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:42:17" (1/1) ... [2023-12-21 15:42:17,464 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:42:17" (1/1) ... [2023-12-21 15:42:17,465 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:42:17" (1/1) ... [2023-12-21 15:42:17,466 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:42:17" (1/1) ... [2023-12-21 15:42:17,468 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 15:42:17,469 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 15:42:17,469 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 15:42:17,469 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 15:42:17,469 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:42:17" (1/1) ... [2023-12-21 15:42:17,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 15:42:17,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 15:42:17,498 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) [2023-12-21 15:42:17,521 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 [2023-12-21 15:42:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 15:42:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 15:42:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 15:42:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-21 15:42:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-21 15:42:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-21 15:42:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-21 15:42:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-21 15:42:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2023-12-21 15:42:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 15:42:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 15:42:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 15:42:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-21 15:42:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-21 15:42:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-21 15:42:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-21 15:42:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-12-21 15:42:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2023-12-21 15:42:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 15:42:17,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 15:42:17,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 15:42:17,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 15:42:17,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 15:42:17,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-21 15:42:17,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-21 15:42:17,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-21 15:42:17,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-21 15:42:17,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-12-21 15:42:17,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#7 [2023-12-21 15:42:17,610 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 15:42:17,612 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 15:42:17,808 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 15:42:17,842 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 15:42:17,843 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-12-21 15:42:17,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:42:17 BoogieIcfgContainer [2023-12-21 15:42:17,843 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 15:42:17,844 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 15:42:17,845 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 15:42:17,847 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 15:42:17,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:42:17" (1/3) ... [2023-12-21 15:42:17,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488aae3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:42:17, skipping insertion in model container [2023-12-21 15:42:17,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:42:17" (2/3) ... [2023-12-21 15:42:17,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488aae3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:42:17, skipping insertion in model container [2023-12-21 15:42:17,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:42:17" (3/3) ... [2023-12-21 15:42:17,849 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy6_ground-1.i [2023-12-21 15:42:17,864 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 15:42:17,864 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 15:42:17,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 15:42:17,905 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;@387bfaff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 15:42:17,905 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 15:42:17,908 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.9) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:17,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-21 15:42:17,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:42:17,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:42:17,914 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:42:17,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:42:17,922 INFO L85 PathProgramCache]: Analyzing trace with hash -864895236, now seen corresponding path program 1 times [2023-12-21 15:42:17,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:42:17,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417486727] [2023-12-21 15:42:17,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:42:17,934 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 [2023-12-21 15:42:17,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:42:17,937 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) [2023-12-21 15:42:17,938 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 [2023-12-21 15:42:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:42:18,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 15:42:18,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:42:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 15:42:18,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:42:18,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:42:18,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417486727] [2023-12-21 15:42:18,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417486727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:42:18,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:42:18,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 15:42:18,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050295048] [2023-12-21 15:42:18,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:42:18,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 15:42:18,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:42:18,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 15:42:18,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 15:42:18,070 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.9) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:18,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:42:18,133 INFO L93 Difference]: Finished difference Result 42 states and 72 transitions. [2023-12-21 15:42:18,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 15:42:18,135 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-21 15:42:18,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:42:18,142 INFO L225 Difference]: With dead ends: 42 [2023-12-21 15:42:18,142 INFO L226 Difference]: Without dead ends: 20 [2023-12-21 15:42:18,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 15:42:18,149 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:42:18,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 15:42:18,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-21 15:42:18,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-12-21 15:42:18,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:18,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2023-12-21 15:42:18,172 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 27 transitions. Word has length 18 [2023-12-21 15:42:18,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:42:18,172 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 27 transitions. [2023-12-21 15:42:18,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:18,173 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2023-12-21 15:42:18,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-21 15:42:18,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:42:18,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:42:18,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-21 15:42:18,377 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 [2023-12-21 15:42:18,378 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:42:18,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:42:18,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1900491152, now seen corresponding path program 1 times [2023-12-21 15:42:18,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:42:18,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983051170] [2023-12-21 15:42:18,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:42:18,380 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 [2023-12-21 15:42:18,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:42:18,381 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) [2023-12-21 15:42:18,402 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 [2023-12-21 15:42:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:42:18,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 15:42:18,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:42:18,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 15:42:18,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:42:18,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:42:18,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983051170] [2023-12-21 15:42:18,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983051170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:42:18,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:42:18,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 15:42:18,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180367150] [2023-12-21 15:42:18,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:42:18,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 15:42:18,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:42:18,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 15:42:18,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 15:42:18,461 INFO L87 Difference]: Start difference. First operand 20 states and 27 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:18,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:42:18,505 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2023-12-21 15:42:18,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 15:42:18,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-21 15:42:18,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:42:18,506 INFO L225 Difference]: With dead ends: 39 [2023-12-21 15:42:18,506 INFO L226 Difference]: Without dead ends: 21 [2023-12-21 15:42:18,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 15:42:18,508 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:42:18,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 15:42:18,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-21 15:42:18,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-21 15:42:18,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.4) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:18,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2023-12-21 15:42:18,517 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 28 transitions. Word has length 18 [2023-12-21 15:42:18,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:42:18,517 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 28 transitions. [2023-12-21 15:42:18,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:18,518 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 28 transitions. [2023-12-21 15:42:18,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-21 15:42:18,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:42:18,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:42:18,523 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 [2023-12-21 15:42:18,721 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 [2023-12-21 15:42:18,721 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:42:18,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:42:18,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1498573805, now seen corresponding path program 1 times [2023-12-21 15:42:18,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:42:18,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340813102] [2023-12-21 15:42:18,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:42:18,722 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 15:42:18,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:42:18,726 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) [2023-12-21 15:42:18,727 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 [2023-12-21 15:42:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:42:18,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 15:42:18,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:42:18,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 15:42:18,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:42:18,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 15:42:18,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:42:18,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340813102] [2023-12-21 15:42:18,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340813102] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:42:18,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:42:18,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-21 15:42:18,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401902806] [2023-12-21 15:42:18,886 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:42:18,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 15:42:18,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:42:18,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 15:42:18,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 15:42:18,887 INFO L87 Difference]: Start difference. First operand 21 states and 28 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:18,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:42:18,971 INFO L93 Difference]: Finished difference Result 42 states and 58 transitions. [2023-12-21 15:42:18,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 15:42:18,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-21 15:42:18,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:42:18,972 INFO L225 Difference]: With dead ends: 42 [2023-12-21 15:42:18,972 INFO L226 Difference]: Without dead ends: 24 [2023-12-21 15:42:18,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-21 15:42:18,973 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:42:18,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 15:42:18,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-21 15:42:18,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-21 15:42:18,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:18,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2023-12-21 15:42:18,976 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 19 [2023-12-21 15:42:18,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:42:18,976 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2023-12-21 15:42:18,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:18,977 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2023-12-21 15:42:18,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 15:42:18,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:42:18,977 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:42:18,983 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 [2023-12-21 15:42:19,180 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 [2023-12-21 15:42:19,181 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:42:19,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:42:19,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1217306416, now seen corresponding path program 2 times [2023-12-21 15:42:19,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:42:19,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908739975] [2023-12-21 15:42:19,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:42:19,182 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 [2023-12-21 15:42:19,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:42:19,183 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) [2023-12-21 15:42:19,185 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 [2023-12-21 15:42:19,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 15:42:19,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:42:19,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 15:42:19,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:42:19,250 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 15:42:19,250 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:42:19,250 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:42:19,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908739975] [2023-12-21 15:42:19,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908739975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:42:19,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:42:19,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 15:42:19,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13238748] [2023-12-21 15:42:19,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:42:19,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 15:42:19,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:42:19,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 15:42:19,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 15:42:19,252 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:19,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:42:19,308 INFO L93 Difference]: Finished difference Result 46 states and 64 transitions. [2023-12-21 15:42:19,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 15:42:19,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-21 15:42:19,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:42:19,309 INFO L225 Difference]: With dead ends: 46 [2023-12-21 15:42:19,309 INFO L226 Difference]: Without dead ends: 30 [2023-12-21 15:42:19,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 15:42:19,310 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:42:19,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 15:42:19,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-21 15:42:19,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-12-21 15:42:19,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:19,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2023-12-21 15:42:19,315 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 22 [2023-12-21 15:42:19,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:42:19,316 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2023-12-21 15:42:19,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:19,316 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2023-12-21 15:42:19,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-21 15:42:19,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:42:19,317 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:42:19,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-21 15:42:19,520 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 [2023-12-21 15:42:19,521 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:42:19,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:42:19,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1829949152, now seen corresponding path program 1 times [2023-12-21 15:42:19,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:42:19,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613219508] [2023-12-21 15:42:19,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:42:19,522 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 15:42:19,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:42:19,530 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) [2023-12-21 15:42:19,533 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 [2023-12-21 15:42:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:42:19,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 15:42:19,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:42:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 15:42:19,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:42:19,725 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 15:42:19,725 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:42:19,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613219508] [2023-12-21 15:42:19,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613219508] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:42:19,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:42:19,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-21 15:42:19,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376457405] [2023-12-21 15:42:19,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:42:19,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 15:42:19,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:42:19,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 15:42:19,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 15:42:19,746 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:19,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:42:19,962 INFO L93 Difference]: Finished difference Result 60 states and 79 transitions. [2023-12-21 15:42:19,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 15:42:19,962 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-21 15:42:19,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:42:19,963 INFO L225 Difference]: With dead ends: 60 [2023-12-21 15:42:19,963 INFO L226 Difference]: Without dead ends: 36 [2023-12-21 15:42:19,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 15:42:19,964 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:42:19,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 15:42:19,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-21 15:42:19,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-21 15:42:19,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:19,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2023-12-21 15:42:19,968 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 28 [2023-12-21 15:42:19,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:42:19,968 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2023-12-21 15:42:19,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:19,968 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2023-12-21 15:42:19,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 15:42:19,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:42:19,969 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:42:19,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-21 15:42:20,169 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 [2023-12-21 15:42:20,169 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:42:20,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:42:20,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1426048000, now seen corresponding path program 2 times [2023-12-21 15:42:20,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:42:20,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473717970] [2023-12-21 15:42:20,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:42:20,170 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 [2023-12-21 15:42:20,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:42:20,172 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) [2023-12-21 15:42:20,200 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 [2023-12-21 15:42:20,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 15:42:20,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:42:20,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 15:42:20,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:42:20,406 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 15:42:20,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:42:20,698 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 15:42:20,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:42:20,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473717970] [2023-12-21 15:42:20,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473717970] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:42:20,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:42:20,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-21 15:42:20,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652142243] [2023-12-21 15:42:20,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:42:20,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 15:42:20,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:42:20,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 15:42:20,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 15:42:20,700 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:21,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:42:21,642 INFO L93 Difference]: Finished difference Result 72 states and 97 transitions. [2023-12-21 15:42:21,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 15:42:21,642 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-21 15:42:21,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:42:21,643 INFO L225 Difference]: With dead ends: 72 [2023-12-21 15:42:21,643 INFO L226 Difference]: Without dead ends: 48 [2023-12-21 15:42:21,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 15:42:21,644 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 15:42:21,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 205 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 15:42:21,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-21 15:42:21,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-12-21 15:42:21,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:21,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2023-12-21 15:42:21,650 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 34 [2023-12-21 15:42:21,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:42:21,651 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2023-12-21 15:42:21,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:21,651 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2023-12-21 15:42:21,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-21 15:42:21,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:42:21,652 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:42:21,656 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 [2023-12-21 15:42:21,855 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 [2023-12-21 15:42:21,856 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:42:21,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:42:21,856 INFO L85 PathProgramCache]: Analyzing trace with hash 63049280, now seen corresponding path program 3 times [2023-12-21 15:42:21,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:42:21,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403927065] [2023-12-21 15:42:21,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 15:42:21,857 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 [2023-12-21 15:42:21,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:42:21,858 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) [2023-12-21 15:42:21,889 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 [2023-12-21 15:42:21,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 15:42:21,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:42:21,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 15:42:21,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:42:22,003 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2023-12-21 15:42:22,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:42:22,017 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2023-12-21 15:42:22,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:42:22,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403927065] [2023-12-21 15:42:22,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403927065] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:42:22,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:42:22,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-21 15:42:22,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337164390] [2023-12-21 15:42:22,017 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:42:22,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 15:42:22,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:42:22,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 15:42:22,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 15:42:22,018 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:22,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:42:22,168 INFO L93 Difference]: Finished difference Result 87 states and 117 transitions. [2023-12-21 15:42:22,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 15:42:22,169 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-21 15:42:22,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:42:22,169 INFO L225 Difference]: With dead ends: 87 [2023-12-21 15:42:22,169 INFO L226 Difference]: Without dead ends: 66 [2023-12-21 15:42:22,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-21 15:42:22,170 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:42:22,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 15:42:22,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-21 15:42:22,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-12-21 15:42:22,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.123076923076923) internal successors, (73), 65 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:22,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2023-12-21 15:42:22,176 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 46 [2023-12-21 15:42:22,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:42:22,176 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2023-12-21 15:42:22,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:22,176 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2023-12-21 15:42:22,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 15:42:22,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:42:22,177 INFO L195 NwaCegarLoop]: trace histogram [22, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:42:22,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-21 15:42:22,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 15:42:22,380 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:42:22,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:42:22,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1698331248, now seen corresponding path program 4 times [2023-12-21 15:42:22,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:42:22,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728324957] [2023-12-21 15:42:22,381 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 15:42:22,381 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 15:42:22,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:42:22,396 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 15:42:22,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 15:42:22,609 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 15:42:22,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:42:22,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 15:42:22,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:42:22,946 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-21 15:42:22,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:42:24,139 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-21 15:42:24,139 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:42:24,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728324957] [2023-12-21 15:42:24,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1728324957] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:42:24,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:42:24,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 15:42:24,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266540854] [2023-12-21 15:42:24,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:42:24,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 15:42:24,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:42:24,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 15:42:24,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 15:42:24,143 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand has 48 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 47 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:30,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:42:30,086 INFO L93 Difference]: Finished difference Result 132 states and 169 transitions. [2023-12-21 15:42:30,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 15:42:30,087 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 47 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-21 15:42:30,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:42:30,088 INFO L225 Difference]: With dead ends: 132 [2023-12-21 15:42:30,088 INFO L226 Difference]: Without dead ends: 90 [2023-12-21 15:42:30,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 15:42:30,090 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:42:30,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 409 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 15:42:30,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-21 15:42:30,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-12-21 15:42:30,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.0898876404494382) internal successors, (97), 89 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:30,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 97 transitions. [2023-12-21 15:42:30,096 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 97 transitions. Word has length 64 [2023-12-21 15:42:30,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:42:30,097 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 97 transitions. [2023-12-21 15:42:30,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 47 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:30,097 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 97 transitions. [2023-12-21 15:42:30,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 15:42:30,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:42:30,098 INFO L195 NwaCegarLoop]: trace histogram [46, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:42:30,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-21 15:42:30,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 15:42:30,308 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:42:30,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:42:30,308 INFO L85 PathProgramCache]: Analyzing trace with hash -285939184, now seen corresponding path program 5 times [2023-12-21 15:42:30,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:42:30,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396292198] [2023-12-21 15:42:30,309 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 15:42:30,309 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 [2023-12-21 15:42:30,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:42:30,310 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) [2023-12-21 15:42:30,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-21 15:42:32,703 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-12-21 15:42:32,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:42:32,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 15:42:32,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:42:32,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1131 trivial. 0 not checked. [2023-12-21 15:42:32,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:42:32,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1131 trivial. 0 not checked. [2023-12-21 15:42:32,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:42:32,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396292198] [2023-12-21 15:42:32,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396292198] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:42:32,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:42:32,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-21 15:42:32,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861916569] [2023-12-21 15:42:32,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:42:32,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 15:42:32,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:42:32,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 15:42:32,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 15:42:32,847 INFO L87 Difference]: Start difference. First operand 90 states and 97 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:33,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:42:33,439 INFO L93 Difference]: Finished difference Result 162 states and 210 transitions. [2023-12-21 15:42:33,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 15:42:33,439 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-21 15:42:33,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:42:33,440 INFO L225 Difference]: With dead ends: 162 [2023-12-21 15:42:33,440 INFO L226 Difference]: Without dead ends: 126 [2023-12-21 15:42:33,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 15:42:33,441 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 15:42:33,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 15:42:33,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-12-21 15:42:33,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-12-21 15:42:33,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.064) internal successors, (133), 125 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:33,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 133 transitions. [2023-12-21 15:42:33,466 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 133 transitions. Word has length 88 [2023-12-21 15:42:33,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:42:33,468 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 133 transitions. [2023-12-21 15:42:33,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:33,468 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 133 transitions. [2023-12-21 15:42:33,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 15:42:33,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:42:33,473 INFO L195 NwaCegarLoop]: trace histogram [46, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:42:33,490 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 [2023-12-21 15:42:33,673 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 [2023-12-21 15:42:33,673 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:42:33,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:42:33,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1308202864, now seen corresponding path program 6 times [2023-12-21 15:42:33,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:42:33,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338790849] [2023-12-21 15:42:33,674 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 15:42:33,674 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 [2023-12-21 15:42:33,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:42:33,689 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 15:42:33,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-21 15:42:35,118 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-12-21 15:42:35,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:42:35,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 15:42:35,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:42:35,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1411 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2023-12-21 15:42:35,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:42:35,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1411 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2023-12-21 15:42:35,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:42:35,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338790849] [2023-12-21 15:42:35,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338790849] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:42:35,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:42:35,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-21 15:42:35,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146907580] [2023-12-21 15:42:35,506 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:42:35,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 15:42:35,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:42:35,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 15:42:35,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 15:42:35,507 INFO L87 Difference]: Start difference. First operand 126 states and 133 transitions. Second operand has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:37,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:42:37,696 INFO L93 Difference]: Finished difference Result 264 states and 348 transitions. [2023-12-21 15:42:37,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 15:42:37,697 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2023-12-21 15:42:37,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:42:37,698 INFO L225 Difference]: With dead ends: 264 [2023-12-21 15:42:37,698 INFO L226 Difference]: Without dead ends: 198 [2023-12-21 15:42:37,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 15:42:37,699 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 751 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 751 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 15:42:37,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [751 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 15:42:37,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-12-21 15:42:37,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2023-12-21 15:42:37,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.0406091370558375) internal successors, (205), 197 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:37,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 205 transitions. [2023-12-21 15:42:37,714 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 205 transitions. Word has length 124 [2023-12-21 15:42:37,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:42:37,714 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 205 transitions. [2023-12-21 15:42:37,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:42:37,715 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 205 transitions. [2023-12-21 15:42:37,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-21 15:42:37,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:42:37,716 INFO L195 NwaCegarLoop]: trace histogram [46, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:42:37,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-21 15:42:37,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 15:42:37,932 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:42:37,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:42:37,933 INFO L85 PathProgramCache]: Analyzing trace with hash -6322800, now seen corresponding path program 7 times [2023-12-21 15:42:37,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:42:37,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909925719] [2023-12-21 15:42:37,933 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 15:42:37,933 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 [2023-12-21 15:42:37,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:42:37,934 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 15:42:37,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-21 15:42:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:42:38,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 15:42:38,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:42:39,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2599 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2023-12-21 15:42:39,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:42:44,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2599 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2023-12-21 15:42:44,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:42:44,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909925719] [2023-12-21 15:42:44,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909925719] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:42:44,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:42:44,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-21 15:42:44,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106451911] [2023-12-21 15:42:44,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:42:44,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 15:42:44,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:42:44,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 15:42:44,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 15:42:44,012 INFO L87 Difference]: Start difference. First operand 198 states and 205 transitions. Second operand has 96 states, 96 states have (on average 1.2291666666666667) internal successors, (118), 95 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:43:30,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:43:30,883 INFO L93 Difference]: Finished difference Result 396 states and 457 transitions. [2023-12-21 15:43:30,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-21 15:43:30,884 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.2291666666666667) internal successors, (118), 95 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2023-12-21 15:43:30,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:43:30,884 INFO L225 Difference]: With dead ends: 396 [2023-12-21 15:43:30,884 INFO L226 Difference]: Without dead ends: 246 [2023-12-21 15:43:30,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 48.7s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-21 15:43:30,888 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 2703 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-21 15:43:30,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 851 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2703 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-21 15:43:30,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-12-21 15:43:30,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2023-12-21 15:43:30,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.0326530612244897) internal successors, (253), 245 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:43:30,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 253 transitions. [2023-12-21 15:43:30,906 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 253 transitions. Word has length 196 [2023-12-21 15:43:30,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:43:30,906 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 253 transitions. [2023-12-21 15:43:30,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.2291666666666667) internal successors, (118), 95 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:43:30,906 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 253 transitions. [2023-12-21 15:43:30,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-21 15:43:30,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:43:30,912 INFO L195 NwaCegarLoop]: trace histogram [94, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:43:30,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-21 15:43:31,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 15:43:31,129 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:43:31,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:43:31,129 INFO L85 PathProgramCache]: Analyzing trace with hash 2078035600, now seen corresponding path program 8 times [2023-12-21 15:43:31,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:43:31,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112382903] [2023-12-21 15:43:31,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:43:31,130 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 [2023-12-21 15:43:31,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:43:31,131 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 15:43:31,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-21 15:43:32,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 15:43:32,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:43:32,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-21 15:43:32,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:43:35,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5983 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2023-12-21 15:43:35,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:43:53,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5983 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2023-12-21 15:43:53,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:43:53,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112382903] [2023-12-21 15:43:53,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112382903] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:43:53,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:43:53,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2023-12-21 15:43:53,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108039981] [2023-12-21 15:43:53,726 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:43:53,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-21 15:43:53,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:43:53,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-21 15:43:53,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9406, Invalid=27266, Unknown=0, NotChecked=0, Total=36672 [2023-12-21 15:43:53,734 INFO L87 Difference]: Start difference. First operand 246 states and 253 transitions. Second operand has 192 states, 192 states have (on average 1.1145833333333333) internal successors, (214), 191 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:51:54,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:51:54,057 INFO L93 Difference]: Finished difference Result 492 states and 601 transitions. [2023-12-21 15:51:54,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-12-21 15:51:54,058 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.1145833333333333) internal successors, (214), 191 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 244 [2023-12-21 15:51:54,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:51:54,059 INFO L225 Difference]: With dead ends: 492 [2023-12-21 15:51:54,059 INFO L226 Difference]: Without dead ends: 342 [2023-12-21 15:51:54,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4371 ImplicationChecksByTransitivity, 488.7s TimeCoverageRelationStatistics Valid=27454, Invalid=54056, Unknown=0, NotChecked=0, Total=81510 [2023-12-21 15:51:54,068 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 9991 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 9992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2023-12-21 15:51:54,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1650 Invalid, 9992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9991 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2023-12-21 15:51:54,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-12-21 15:51:54,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2023-12-21 15:51:54,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 1.0234604105571847) internal successors, (349), 341 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:51:54,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 349 transitions. [2023-12-21 15:51:54,086 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 349 transitions. Word has length 244 [2023-12-21 15:51:54,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:51:54,087 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 349 transitions. [2023-12-21 15:51:54,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.1145833333333333) internal successors, (214), 191 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:51:54,087 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 349 transitions. [2023-12-21 15:51:54,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-12-21 15:51:54,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:51:54,089 INFO L195 NwaCegarLoop]: trace histogram [190, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:51:54,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-21 15:51:54,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 15:51:54,314 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:51:54,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:51:54,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1642864496, now seen corresponding path program 9 times [2023-12-21 15:51:54,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:51:54,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424769290] [2023-12-21 15:51:54,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 15:51:54,315 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 [2023-12-21 15:51:54,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:51:54,316 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 15:51:54,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-21 15:51:58,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-12-21 15:51:58,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:51:58,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 15:51:58,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:51:58,727 INFO L134 CoverageAnalysis]: Checked inductivity of 19663 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 19410 trivial. 0 not checked. [2023-12-21 15:51:58,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:51:59,996 INFO L134 CoverageAnalysis]: Checked inductivity of 19663 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 19410 trivial. 0 not checked. [2023-12-21 15:51:59,996 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:51:59,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424769290] [2023-12-21 15:51:59,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424769290] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:51:59,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:51:59,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2023-12-21 15:51:59,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745816975] [2023-12-21 15:51:59,997 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:51:59,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 15:51:59,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:51:59,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 15:51:59,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 15:51:59,998 INFO L87 Difference]: Start difference. First operand 342 states and 349 transitions. Second operand has 48 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 48 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:52:11,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:52:11,407 INFO L93 Difference]: Finished difference Result 612 states and 768 transitions. [2023-12-21 15:52:11,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 15:52:11,408 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 48 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 340 [2023-12-21 15:52:11,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:52:11,409 INFO L225 Difference]: With dead ends: 612 [2023-12-21 15:52:11,409 INFO L226 Difference]: Without dead ends: 486 [2023-12-21 15:52:11,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 15:52:11,410 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 3687 mSolverCounterSat, 2586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 6273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2586 IncrementalHoareTripleChecker+Valid, 3687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:52:11,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 174 Invalid, 6273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2586 Valid, 3687 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-21 15:52:11,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2023-12-21 15:52:11,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 486. [2023-12-21 15:52:11,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 485 states have (on average 1.0164948453608247) internal successors, (493), 485 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:52:11,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 493 transitions. [2023-12-21 15:52:11,428 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 493 transitions. Word has length 340 [2023-12-21 15:52:11,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:52:11,429 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 493 transitions. [2023-12-21 15:52:11,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 48 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:52:11,429 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 493 transitions. [2023-12-21 15:52:11,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2023-12-21 15:52:11,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:52:11,433 INFO L195 NwaCegarLoop]: trace histogram [190, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:52:11,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-21 15:52:11,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 15:52:11,656 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:52:11,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:52:11,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1967692432, now seen corresponding path program 10 times [2023-12-21 15:52:11,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:52:11,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690775973] [2023-12-21 15:52:11,658 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 15:52:11,658 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 [2023-12-21 15:52:11,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:52:11,659 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 15:52:11,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-21 15:52:13,569 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 15:52:13,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:52:13,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 2976 conjuncts, 192 conjunts are in the unsatisfiable core [2023-12-21 15:52:13,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:52:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 24631 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 6486 trivial. 0 not checked. [2023-12-21 15:52:25,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:53:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 24631 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 6486 trivial. 0 not checked. [2023-12-21 15:53:43,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:53:43,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690775973] [2023-12-21 15:53:43,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690775973] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:53:43,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:53:43,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192] total 383 [2023-12-21 15:53:43,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230144359] [2023-12-21 15:53:43,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:53:43,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-12-21 15:53:43,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:53:43,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-12-21 15:53:43,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37246, Invalid=109826, Unknown=0, NotChecked=0, Total=147072 [2023-12-21 15:53:43,644 INFO L87 Difference]: Start difference. First operand 486 states and 493 transitions. Second operand has 384 states, 384 states have (on average 1.0572916666666667) internal successors, (406), 383 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:54:57,470 WARN L293 SmtUtils]: Spent 8.91s on a formula simplification. DAG size of input: 574 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 15:55:22,544 WARN L293 SmtUtils]: Spent 8.68s on a formula simplification. DAG size of input: 571 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 15:55:50,884 WARN L293 SmtUtils]: Spent 9.22s on a formula simplification. DAG size of input: 568 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 15:56:18,596 WARN L293 SmtUtils]: Spent 8.41s on a formula simplification. DAG size of input: 565 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 15:56:47,540 WARN L293 SmtUtils]: Spent 8.24s on a formula simplification. DAG size of input: 562 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-21 15:56:59,552 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 (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 15:56:59,580 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 [2023-12-21 15:56:59,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2023-12-21 15:56:59,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 972 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 223.7s TimeCoverageRelationStatistics Valid=39166, Invalid=111766, Unknown=0, NotChecked=0, Total=150932 [2023-12-21 15:56:59,622 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36678 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:56:59,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 36679 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 36678 Invalid, 0 Unknown, 0 Unchecked, 47.0s Time] [2023-12-21 15:56:59,624 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 15:56:59,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-21 15:56:59,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 15:56:59,848 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (486states) and FLOYD_HOARE automaton (currently 198 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 389 known predicates. [2023-12-21 15:56:59,851 INFO L445 BasicCegarLoop]: Path program histogram: [10, 2, 1, 1] [2023-12-21 15:56:59,854 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 15:56:59,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 03:56:59 BoogieIcfgContainer [2023-12-21 15:56:59,855 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 15:56:59,855 INFO L158 Benchmark]: Toolchain (without parser) took 882640.39ms. Allocated memory was 266.3MB in the beginning and 319.8MB in the end (delta: 53.5MB). Free memory was 223.4MB in the beginning and 187.3MB in the end (delta: 36.1MB). Peak memory consumption was 235.5MB. Max. memory is 8.0GB. [2023-12-21 15:56:59,855 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 174.1MB. Free memory was 124.2MB in the beginning and 124.1MB in the end (delta: 125.7kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 15:56:59,856 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.07ms. Allocated memory is still 266.3MB. Free memory was 222.8MB in the beginning and 211.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 15:56:59,856 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.15ms. Allocated memory is still 266.3MB. Free memory was 211.3MB in the beginning and 209.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 15:56:59,856 INFO L158 Benchmark]: Boogie Preprocessor took 29.84ms. Allocated memory is still 266.3MB. Free memory was 209.2MB in the beginning and 206.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 15:56:59,856 INFO L158 Benchmark]: RCFGBuilder took 374.51ms. Allocated memory is still 266.3MB. Free memory was 206.6MB in the beginning and 184.6MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-21 15:56:59,856 INFO L158 Benchmark]: TraceAbstraction took 882010.53ms. Allocated memory was 266.3MB in the beginning and 319.8MB in the end (delta: 53.5MB). Free memory was 184.0MB in the beginning and 187.3MB in the end (delta: -3.3MB). Peak memory consumption was 195.7MB. Max. memory is 8.0GB. [2023-12-21 15:56:59,857 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 174.1MB. Free memory was 124.2MB in the beginning and 124.1MB in the end (delta: 125.7kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 188.07ms. Allocated memory is still 266.3MB. Free memory was 222.8MB in the beginning and 211.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.15ms. Allocated memory is still 266.3MB. Free memory was 211.3MB in the beginning and 209.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.84ms. Allocated memory is still 266.3MB. Free memory was 209.2MB in the beginning and 206.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 374.51ms. Allocated memory is still 266.3MB. Free memory was 206.6MB in the beginning and 184.6MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 882010.53ms. Allocated memory was 266.3MB in the beginning and 319.8MB in the end (delta: 53.5MB). Free memory was 184.0MB in the beginning and 187.3MB in the end (delta: -3.3MB). Peak memory consumption was 195.7MB. 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: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (486states) and FLOYD_HOARE automaton (currently 198 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 389 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 882.0s, OverallIterations: 14, TraceHistogramMax: 190, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 745.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 72.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 3736 SdHoareTripleChecker+Invalid, 62.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3501 mSDsCounter, 3581 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 55562 IncrementalHoareTripleChecker+Invalid, 59143 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3581 mSolverCounterUnsat, 235 mSDtfsCounter, 55562 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3624 GetRequests, 2572 SyntacticMatches, 0 SemanticMatches, 1051 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5980 ImplicationChecksByTransitivity, 776.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=486occurred in iteration=13, InterpolantAutomatonStates: 476, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 10.1s SatisfiabilityAnalysisTime, 121.3s InterpolantComputationTime, 1725 NumberOfCodeBlocks, 1507 NumberOfCodeBlocksAsserted, 61 NumberOfCheckSat, 3367 ConstructedInterpolants, 0 QuantifiedInterpolants, 5839 SizeOfPredicates, 0 NumberOfNonLiveVariables, 8710 ConjunctsInSsa, 431 ConjunctsInUnsatCore, 25 InterpolantComputations, 3 PerfectInterpolantSequences, 63508/112166 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