/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_copy7_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 15:56:13,062 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 15:56:13,137 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 15:56:13,144 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 15:56:13,144 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 15:56:13,178 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 15:56:13,178 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 15:56:13,179 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 15:56:13,179 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 15:56:13,182 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 15:56:13,183 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 15:56:13,183 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 15:56:13,184 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 15:56:13,185 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 15:56:13,185 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 15:56:13,185 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 15:56:13,186 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 15:56:13,186 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 15:56:13,187 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 15:56:13,187 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 15:56:13,187 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 15:56:13,188 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 15:56:13,188 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 15:56:13,188 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 15:56:13,188 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 15:56:13,188 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 15:56:13,189 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 15:56:13,189 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 15:56:13,189 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 15:56:13,189 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 15:56:13,190 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 15:56:13,190 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 15:56:13,190 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 15:56:13,190 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 15:56:13,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 15:56:13,191 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 15:56:13,191 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 15:56:13,191 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 15:56:13,191 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 15:56:13,191 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 15:56:13,191 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 15:56:13,192 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 15:56:13,192 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 15:56:13,192 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 15:56:13,192 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 15:56:13,192 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 15:56:13,193 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 15:56:13,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 15:56:13,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 15:56:13,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 15:56:13,444 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 15:56:13,444 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 15:56:13,446 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy7_ground-2.i [2023-12-21 15:56:14,603 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 15:56:14,782 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 15:56:14,783 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy7_ground-2.i [2023-12-21 15:56:14,791 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce00c6e30/c4207fa7ad1840469ac0dfcbd2617f47/FLAG10938e052 [2023-12-21 15:56:14,807 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce00c6e30/c4207fa7ad1840469ac0dfcbd2617f47 [2023-12-21 15:56:14,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 15:56:14,811 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 15:56:14,813 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 15:56:14,813 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 15:56:14,817 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 15:56:14,818 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:56:14" (1/1) ... [2023-12-21 15:56:14,819 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@358d9609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:56:14, skipping insertion in model container [2023-12-21 15:56:14,819 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:56:14" (1/1) ... [2023-12-21 15:56:14,846 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 15:56:14,984 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_copy7_ground-2.i[816,829] [2023-12-21 15:56:15,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 15:56:15,014 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 15:56:15,026 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_copy7_ground-2.i[816,829] [2023-12-21 15:56:15,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 15:56:15,060 INFO L206 MainTranslator]: Completed translation [2023-12-21 15:56:15,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:56:15 WrapperNode [2023-12-21 15:56:15,061 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 15:56:15,062 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 15:56:15,062 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 15:56:15,062 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 15:56:15,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:56:15" (1/1) ... [2023-12-21 15:56:15,081 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:56:15" (1/1) ... [2023-12-21 15:56:15,101 INFO L138 Inliner]: procedures = 18, calls = 48, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 159 [2023-12-21 15:56:15,101 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 15:56:15,102 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 15:56:15,102 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 15:56:15,102 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 15:56:15,110 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:56:15" (1/1) ... [2023-12-21 15:56:15,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:56:15" (1/1) ... [2023-12-21 15:56:15,113 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:56:15" (1/1) ... [2023-12-21 15:56:15,132 INFO L175 MemorySlicer]: Split 19 memory accesses to 9 slices as follows [2, 2, 2, 2, 2, 2, 3, 2, 2]. 16 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 1, 1, 1, 1, 1, 1, 1]. [2023-12-21 15:56:15,133 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:56:15" (1/1) ... [2023-12-21 15:56:15,133 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:56:15" (1/1) ... [2023-12-21 15:56:15,144 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:56:15" (1/1) ... [2023-12-21 15:56:15,153 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:56:15" (1/1) ... [2023-12-21 15:56:15,157 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:56:15" (1/1) ... [2023-12-21 15:56:15,158 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:56:15" (1/1) ... [2023-12-21 15:56:15,161 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 15:56:15,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 15:56:15,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 15:56:15,162 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 15:56:15,162 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:56:15" (1/1) ... [2023-12-21 15:56:15,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 15:56:15,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 15:56:15,187 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 15:56:15,188 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 15:56:15,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 15:56:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 15:56:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 15:56:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-21 15:56:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-21 15:56:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-21 15:56:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-21 15:56:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-21 15:56:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2023-12-21 15:56:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2023-12-21 15:56:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 15:56:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 15:56:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 15:56:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-21 15:56:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-21 15:56:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-21 15:56:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-21 15:56:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-12-21 15:56:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2023-12-21 15:56:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#8 [2023-12-21 15:56:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 15:56:15,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 15:56:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 15:56:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 15:56:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 15:56:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-21 15:56:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-21 15:56:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-21 15:56:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-21 15:56:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-12-21 15:56:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#7 [2023-12-21 15:56:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#8 [2023-12-21 15:56:15,309 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 15:56:15,311 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 15:56:15,515 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 15:56:15,558 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 15:56:15,559 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-12-21 15:56:15,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:56:15 BoogieIcfgContainer [2023-12-21 15:56:15,559 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 15:56:15,561 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 15:56:15,561 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 15:56:15,564 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 15:56:15,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:56:14" (1/3) ... [2023-12-21 15:56:15,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f653f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:56:15, skipping insertion in model container [2023-12-21 15:56:15,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:56:15" (2/3) ... [2023-12-21 15:56:15,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f653f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:56:15, skipping insertion in model container [2023-12-21 15:56:15,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:56:15" (3/3) ... [2023-12-21 15:56:15,566 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy7_ground-2.i [2023-12-21 15:56:15,599 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 15:56:15,600 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 15:56:15,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 15:56:15,642 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;@6d2a2c4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 15:56:15,642 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 15:56:15,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 23 states have internal predecessors, (42), 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 15:56:15,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-21 15:56:15,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:56:15,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:56:15,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:56:15,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:56:15,661 INFO L85 PathProgramCache]: Analyzing trace with hash 634557882, now seen corresponding path program 1 times [2023-12-21 15:56:15,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:56:15,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349332910] [2023-12-21 15:56:15,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:56:15,671 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 15:56:15,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:56:15,672 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 15:56:15,674 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 15:56:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:56:15,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 15:56:15,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:56:15,796 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 15:56:15,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:56:15,797 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:56:15,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349332910] [2023-12-21 15:56:15,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349332910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:56:15,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:56:15,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 15:56:15,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87639278] [2023-12-21 15:56:15,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:56:15,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 15:56:15,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:56:15,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 15:56:15,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 15:56:15,835 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 23 states have internal predecessors, (42), 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 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 15:56:15,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:56:15,959 INFO L93 Difference]: Finished difference Result 46 states and 80 transitions. [2023-12-21 15:56:15,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 15:56:15,962 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 20 [2023-12-21 15:56:15,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:56:15,968 INFO L225 Difference]: With dead ends: 46 [2023-12-21 15:56:15,968 INFO L226 Difference]: Without dead ends: 22 [2023-12-21 15:56:15,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 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 15:56:15,973 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:56:15,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 15:56:15,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-21 15:56:16,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-21 15:56:16,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:56:16,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2023-12-21 15:56:16,005 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 20 [2023-12-21 15:56:16,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:56:16,006 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2023-12-21 15:56:16,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 15:56:16,006 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2023-12-21 15:56:16,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-21 15:56:16,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:56:16,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:56:16,011 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 15:56:16,210 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 15:56:16,211 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:56:16,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:56:16,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1853754152, now seen corresponding path program 1 times [2023-12-21 15:56:16,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:56:16,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764464963] [2023-12-21 15:56:16,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:56:16,213 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 15:56:16,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:56:16,216 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 15:56:16,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-21 15:56:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:56:16,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 15:56:16,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:56:16,307 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 15:56:16,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:56:16,308 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:56:16,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764464963] [2023-12-21 15:56:16,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764464963] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:56:16,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:56:16,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 15:56:16,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485608881] [2023-12-21 15:56:16,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:56:16,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 15:56:16,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:56:16,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 15:56:16,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 15:56:16,311 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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 15:56:16,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:56:16,412 INFO L93 Difference]: Finished difference Result 43 states and 59 transitions. [2023-12-21 15:56:16,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 15:56:16,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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 20 [2023-12-21 15:56:16,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:56:16,413 INFO L225 Difference]: With dead ends: 43 [2023-12-21 15:56:16,413 INFO L226 Difference]: Without dead ends: 23 [2023-12-21 15:56:16,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 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 15:56:16,415 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:56:16,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 15:56:16,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-21 15:56:16,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-21 15:56:16,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 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 15:56:16,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2023-12-21 15:56:16,419 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 20 [2023-12-21 15:56:16,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:56:16,420 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2023-12-21 15:56:16,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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 15:56:16,420 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2023-12-21 15:56:16,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-21 15:56:16,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:56:16,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:56:16,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-21 15:56:16,621 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 15:56:16,622 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:56:16,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:56:16,622 INFO L85 PathProgramCache]: Analyzing trace with hash -195610760, now seen corresponding path program 1 times [2023-12-21 15:56:16,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:56:16,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149854646] [2023-12-21 15:56:16,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:56:16,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 15:56:16,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:56:16,625 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 15:56:16,628 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 15:56:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:56:16,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 15:56:16,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:56:16,732 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 15:56:16,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:56:16,766 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 15:56:16,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:56:16,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149854646] [2023-12-21 15:56:16,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149854646] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:56:16,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:56:16,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-21 15:56:16,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750845572] [2023-12-21 15:56:16,770 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:56:16,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 15:56:16,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:56:16,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 15:56:16,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 15:56:16,772 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 15:56:16,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:56:16,969 INFO L93 Difference]: Finished difference Result 46 states and 64 transitions. [2023-12-21 15:56:16,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 15:56:16,969 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 21 [2023-12-21 15:56:16,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:56:16,970 INFO L225 Difference]: With dead ends: 46 [2023-12-21 15:56:16,970 INFO L226 Difference]: Without dead ends: 26 [2023-12-21 15:56:16,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 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 15:56:16,971 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 15:56:16,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 15:56:16,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-21 15:56:16,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-21 15:56:16,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 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 15:56:16,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2023-12-21 15:56:16,975 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 21 [2023-12-21 15:56:16,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:56:16,975 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2023-12-21 15:56:16,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 15:56:16,976 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2023-12-21 15:56:16,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-21 15:56:16,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:56:16,976 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] [2023-12-21 15:56:16,980 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 15:56:17,179 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 15:56:17,180 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:56:17,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:56:17,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1316053208, now seen corresponding path program 2 times [2023-12-21 15:56:17,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:56:17,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590387656] [2023-12-21 15:56:17,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:56:17,181 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 15:56:17,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:56:17,183 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 15:56:17,186 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 15:56:17,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 15:56:17,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:56:17,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 15:56:17,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:56:17,278 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 15:56:17,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:56:17,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:56:17,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590387656] [2023-12-21 15:56:17,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590387656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:56:17,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:56:17,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 15:56:17,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755532954] [2023-12-21 15:56:17,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:56:17,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 15:56:17,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:56:17,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 15:56:17,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 15:56:17,285 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 15:56:17,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:56:17,507 INFO L93 Difference]: Finished difference Result 51 states and 72 transitions. [2023-12-21 15:56:17,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 15:56:17,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 24 [2023-12-21 15:56:17,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:56:17,510 INFO L225 Difference]: With dead ends: 51 [2023-12-21 15:56:17,510 INFO L226 Difference]: Without dead ends: 33 [2023-12-21 15:56:17,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 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 15:56:17,511 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 15:56:17,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 15:56:17,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-21 15:56:17,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-12-21 15:56:17,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 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 15:56:17,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2023-12-21 15:56:17,517 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 24 [2023-12-21 15:56:17,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:56:17,517 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2023-12-21 15:56:17,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 15:56:17,517 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2023-12-21 15:56:17,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-21 15:56:17,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:56:17,518 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, 1, 1, 1] [2023-12-21 15:56:17,525 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 15:56:17,718 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 15:56:17,719 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:56:17,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:56:17,719 INFO L85 PathProgramCache]: Analyzing trace with hash -127031267, now seen corresponding path program 1 times [2023-12-21 15:56:17,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:56:17,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353988006] [2023-12-21 15:56:17,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:56:17,720 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 15:56:17,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:56:17,721 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 15:56:17,723 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 15:56:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:56:17,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 15:56:17,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:56:17,880 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 15:56:17,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:56:17,981 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 15:56:17,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:56:17,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353988006] [2023-12-21 15:56:17,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353988006] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:56:17,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:56:17,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-21 15:56:17,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643335917] [2023-12-21 15:56:17,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:56:17,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 15:56:17,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:56:17,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 15:56:17,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 15:56:17,984 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 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 15:56:18,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:56:18,502 INFO L93 Difference]: Finished difference Result 66 states and 87 transitions. [2023-12-21 15:56:18,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 15:56:18,504 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 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) Word has length 31 [2023-12-21 15:56:18,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:56:18,504 INFO L225 Difference]: With dead ends: 66 [2023-12-21 15:56:18,505 INFO L226 Difference]: Without dead ends: 39 [2023-12-21 15:56:18,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 15:56:18,506 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 15:56:18,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 191 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 15:56:18,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-21 15:56:18,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-12-21 15:56:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.236842105263158) internal successors, (47), 38 states have internal predecessors, (47), 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 15:56:18,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2023-12-21 15:56:18,511 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 31 [2023-12-21 15:56:18,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:56:18,513 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2023-12-21 15:56:18,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 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 15:56:18,515 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2023-12-21 15:56:18,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-21 15:56:18,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:56:18,517 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, 1, 1, 1] [2023-12-21 15:56:18,526 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 15:56:18,721 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 15:56:18,721 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:56:18,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:56:18,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1993198109, now seen corresponding path program 2 times [2023-12-21 15:56:18,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:56:18,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873653598] [2023-12-21 15:56:18,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:56:18,723 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 15:56:18,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:56:18,724 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 15:56:18,725 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 15:56:18,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 15:56:18,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:56:18,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 15:56:18,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:56:19,030 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 15:56:19,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:56:19,414 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 15:56:19,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:56:19,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873653598] [2023-12-21 15:56:19,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873653598] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:56:19,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:56:19,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-21 15:56:19,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491978649] [2023-12-21 15:56:19,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:56:19,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 15:56:19,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:56:19,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 15:56:19,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 15:56:19,417 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 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 15:56:21,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:56:21,078 INFO L93 Difference]: Finished difference Result 78 states and 105 transitions. [2023-12-21 15:56:21,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 15:56:21,080 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 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 37 [2023-12-21 15:56:21,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:56:21,080 INFO L225 Difference]: With dead ends: 78 [2023-12-21 15:56:21,081 INFO L226 Difference]: Without dead ends: 51 [2023-12-21 15:56:21,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 15:56:21,082 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 15:56:21,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 229 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 15:56:21,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-21 15:56:21,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-21 15:56:21,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.18) internal successors, (59), 50 states have internal predecessors, (59), 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 15:56:21,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2023-12-21 15:56:21,090 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 37 [2023-12-21 15:56:21,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:56:21,091 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2023-12-21 15:56:21,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 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 15:56:21,091 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2023-12-21 15:56:21,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 15:56:21,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:56:21,092 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, 1, 1, 1] [2023-12-21 15:56:21,099 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 15:56:21,299 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 15:56:21,300 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:56:21,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:56:21,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1773564387, now seen corresponding path program 3 times [2023-12-21 15:56:21,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:56:21,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587846062] [2023-12-21 15:56:21,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 15:56:21,301 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 15:56:21,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:56:21,303 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 15:56:21,306 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 15:56:21,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 15:56:21,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:56:21,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 15:56:21,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:56:21,504 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2023-12-21 15:56:21,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:56:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2023-12-21 15:56:21,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:56:21,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587846062] [2023-12-21 15:56:21,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587846062] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:56:21,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:56:21,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-21 15:56:21,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795174990] [2023-12-21 15:56:21,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:56:21,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 15:56:21,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:56:21,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 15:56:21,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 15:56:21,525 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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 15:56:21,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:56:21,876 INFO L93 Difference]: Finished difference Result 96 states and 131 transitions. [2023-12-21 15:56:21,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 15:56:21,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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 49 [2023-12-21 15:56:21,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:56:21,878 INFO L225 Difference]: With dead ends: 96 [2023-12-21 15:56:21,878 INFO L226 Difference]: Without dead ends: 72 [2023-12-21 15:56:21,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 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 15:56:21,879 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 15:56:21,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 15:56:21,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-21 15:56:21,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-12-21 15:56:21,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1267605633802817) internal successors, (80), 71 states have internal predecessors, (80), 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 15:56:21,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2023-12-21 15:56:21,888 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 49 [2023-12-21 15:56:21,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:56:21,888 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2023-12-21 15:56:21,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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 15:56:21,889 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2023-12-21 15:56:21,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 15:56:21,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:56:21,890 INFO L195 NwaCegarLoop]: trace histogram [22, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:56:21,897 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 15:56:22,095 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 15:56:22,095 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:56:22,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:56:22,096 INFO L85 PathProgramCache]: Analyzing trace with hash 942575208, now seen corresponding path program 4 times [2023-12-21 15:56:22,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:56:22,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845207510] [2023-12-21 15:56:22,096 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 15:56:22,096 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 15:56:22,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:56:22,098 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 15:56:22,098 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 15:56:22,315 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 15:56:22,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:56:22,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 15:56:22,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:56:22,657 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-21 15:56:22,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:56:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-21 15:56:23,976 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:56:23,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845207510] [2023-12-21 15:56:23,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845207510] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:56:23,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:56:23,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 15:56:23,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488903458] [2023-12-21 15:56:23,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:56:23,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 15:56:23,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:56:23,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 15:56:23,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 15:56:23,980 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand has 48 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 47 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 15:56:31,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:56:31,245 INFO L93 Difference]: Finished difference Result 144 states and 183 transitions. [2023-12-21 15:56:31,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 15:56:31,246 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 47 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) Word has length 70 [2023-12-21 15:56:31,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:56:31,246 INFO L225 Difference]: With dead ends: 144 [2023-12-21 15:56:31,247 INFO L226 Difference]: Without dead ends: 96 [2023-12-21 15:56:31,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 92 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 15:56:31,249 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:56:31,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 495 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 15:56:31,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-21 15:56:31,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-12-21 15:56:31,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0947368421052632) internal successors, (104), 95 states have internal predecessors, (104), 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 15:56:31,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2023-12-21 15:56:31,260 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 70 [2023-12-21 15:56:31,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:56:31,260 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2023-12-21 15:56:31,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 47 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 15:56:31,260 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2023-12-21 15:56:31,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 15:56:31,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:56:31,261 INFO L195 NwaCegarLoop]: trace histogram [46, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:56:31,270 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 15:56:31,468 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 15:56:31,468 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:56:31,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:56:31,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1527645800, now seen corresponding path program 5 times [2023-12-21 15:56:31,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:56:31,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158045012] [2023-12-21 15:56:31,470 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 15:56:31,470 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 15:56:31,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:56:31,471 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 15:56:31,473 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 15:56:32,396 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-12-21 15:56:32,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:56:32,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 15:56:32,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:56:32,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1151 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1141 trivial. 0 not checked. [2023-12-21 15:56:32,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:56:32,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1151 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1141 trivial. 0 not checked. [2023-12-21 15:56:32,518 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:56:32,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158045012] [2023-12-21 15:56:32,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158045012] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:56:32,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:56:32,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-21 15:56:32,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344335076] [2023-12-21 15:56:32,518 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:56:32,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 15:56:32,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:56:32,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 15:56:32,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 15:56:32,520 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 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 15:56:33,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:56:33,645 INFO L93 Difference]: Finished difference Result 180 states and 236 transitions. [2023-12-21 15:56:33,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 15:56:33,645 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 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) Word has length 94 [2023-12-21 15:56:33,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:56:33,646 INFO L225 Difference]: With dead ends: 180 [2023-12-21 15:56:33,647 INFO L226 Difference]: Without dead ends: 138 [2023-12-21 15:56:33,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 15:56:33,656 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:56:33,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 15:56:33,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-12-21 15:56:33,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2023-12-21 15:56:33,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.0656934306569343) internal successors, (146), 137 states have internal predecessors, (146), 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 15:56:33,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 146 transitions. [2023-12-21 15:56:33,671 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 146 transitions. Word has length 94 [2023-12-21 15:56:33,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:56:33,671 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 146 transitions. [2023-12-21 15:56:33,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 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 15:56:33,672 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 146 transitions. [2023-12-21 15:56:33,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 15:56:33,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:56:33,673 INFO L195 NwaCegarLoop]: trace histogram [46, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:56:33,687 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 15:56:33,887 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 15:56:33,888 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:56:33,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:56:33,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2035874376, now seen corresponding path program 6 times [2023-12-21 15:56:33,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:56:33,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663359436] [2023-12-21 15:56:33,889 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 15:56:33,889 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 15:56:33,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:56:33,891 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 15:56:33,898 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 15:56:35,349 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-12-21 15:56:35,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:56:35,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 15:56:35,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:56:35,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1466 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1411 trivial. 0 not checked. [2023-12-21 15:56:35,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:56:35,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1466 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1411 trivial. 0 not checked. [2023-12-21 15:56:35,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:56:35,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663359436] [2023-12-21 15:56:35,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663359436] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:56:35,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:56:35,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-21 15:56:35,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833656929] [2023-12-21 15:56:35,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:56:35,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 15:56:35,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:56:35,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 15:56:35,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 15:56:35,823 INFO L87 Difference]: Start difference. First operand 138 states and 146 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 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 15:56:39,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:56:39,169 INFO L93 Difference]: Finished difference Result 300 states and 398 transitions. [2023-12-21 15:56:39,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 15:56:39,169 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 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 136 [2023-12-21 15:56:39,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:56:39,170 INFO L225 Difference]: With dead ends: 300 [2023-12-21 15:56:39,170 INFO L226 Difference]: Without dead ends: 222 [2023-12-21 15:56:39,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 15:56:39,172 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 757 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 757 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-21 15:56:39,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 98 Invalid, 1891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [757 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-21 15:56:39,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-12-21 15:56:39,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2023-12-21 15:56:39,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.0407239819004526) internal successors, (230), 221 states have internal predecessors, (230), 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 15:56:39,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 230 transitions. [2023-12-21 15:56:39,192 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 230 transitions. Word has length 136 [2023-12-21 15:56:39,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:56:39,193 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 230 transitions. [2023-12-21 15:56:39,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 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 15:56:39,193 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 230 transitions. [2023-12-21 15:56:39,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-21 15:56:39,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:56:39,195 INFO L195 NwaCegarLoop]: trace histogram [46, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:56:39,214 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 15:56:39,409 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 15:56:39,409 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:56:39,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:56:39,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1853249016, now seen corresponding path program 7 times [2023-12-21 15:56:39,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:56:39,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633779808] [2023-12-21 15:56:39,410 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 15:56:39,410 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 15:56:39,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:56:39,411 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 15:56:39,412 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 15:56:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:56:40,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 15:56:40,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:56:41,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2852 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2023-12-21 15:56:41,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:56:46,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2852 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2023-12-21 15:56:46,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:56:46,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633779808] [2023-12-21 15:56:46,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633779808] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:56:46,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:56:46,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-21 15:56:46,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857584886] [2023-12-21 15:56:46,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:56:46,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 15:56:46,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:56:46,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 15:56:46,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 15:56:46,175 INFO L87 Difference]: Start difference. First operand 222 states and 230 transitions. Second operand has 96 states, 96 states have (on average 1.2604166666666667) internal successors, (121), 95 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:57:34,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:57:34,676 INFO L93 Difference]: Finished difference Result 444 states and 507 transitions. [2023-12-21 15:57:34,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-21 15:57:34,677 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.2604166666666667) internal successors, (121), 95 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 220 [2023-12-21 15:57:34,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:57:34,678 INFO L225 Difference]: With dead ends: 444 [2023-12-21 15:57:34,679 INFO L226 Difference]: Without dead ends: 270 [2023-12-21 15:57:34,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 50.0s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-21 15:57:34,683 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 2735 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 2736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-21 15:57:34,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 913 Invalid, 2736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2735 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-21 15:57:34,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-21 15:57:34,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2023-12-21 15:57:34,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 1.033457249070632) internal successors, (278), 269 states have internal predecessors, (278), 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 15:57:34,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 278 transitions. [2023-12-21 15:57:34,705 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 278 transitions. Word has length 220 [2023-12-21 15:57:34,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:57:34,705 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 278 transitions. [2023-12-21 15:57:34,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.2604166666666667) internal successors, (121), 95 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:57:34,706 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 278 transitions. [2023-12-21 15:57:34,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-12-21 15:57:34,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:57:34,708 INFO L195 NwaCegarLoop]: trace histogram [94, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:57:34,728 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 15:57:34,928 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 15:57:34,928 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:57:34,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:57:34,928 INFO L85 PathProgramCache]: Analyzing trace with hash 176986632, now seen corresponding path program 8 times [2023-12-21 15:57:34,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:57:34,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452802505] [2023-12-21 15:57:34,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:57:34,929 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 15:57:34,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:57:34,930 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 15:57:34,931 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 15:57:35,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 15:57:35,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:57:35,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-21 15:57:35,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:57:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 6236 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2023-12-21 15:57:39,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:57:58,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6236 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2023-12-21 15:57:58,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:57:58,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452802505] [2023-12-21 15:57:58,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452802505] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:57:58,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:57:58,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2023-12-21 15:57:58,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15468947] [2023-12-21 15:57:58,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:57:58,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-21 15:57:58,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:57:58,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-21 15:57:58,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9406, Invalid=27266, Unknown=0, NotChecked=0, Total=36672 [2023-12-21 15:57:58,731 INFO L87 Difference]: Start difference. First operand 270 states and 278 transitions. Second operand has 192 states, 192 states have (on average 1.1302083333333333) internal successors, (217), 191 states have internal predecessors, (217), 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 16:05:34,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:05:34,130 INFO L93 Difference]: Finished difference Result 540 states and 651 transitions. [2023-12-21 16:05:34,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-12-21 16:05:34,132 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.1302083333333333) internal successors, (217), 191 states have internal predecessors, (217), 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 268 [2023-12-21 16:05:34,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:05:34,134 INFO L225 Difference]: With dead ends: 540 [2023-12-21 16:05:34,134 INFO L226 Difference]: Without dead ends: 366 [2023-12-21 16:05:34,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4371 ImplicationChecksByTransitivity, 466.6s TimeCoverageRelationStatistics Valid=27454, Invalid=54056, Unknown=0, NotChecked=0, Total=81510 [2023-12-21 16:05:34,142 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 10097 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 10098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-12-21 16:05:34,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1863 Invalid, 10098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10097 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2023-12-21 16:05:34,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2023-12-21 16:05:34,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2023-12-21 16:05:34,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 365 states have (on average 1.0246575342465754) internal successors, (374), 365 states have internal predecessors, (374), 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 16:05:34,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 374 transitions. [2023-12-21 16:05:34,165 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 374 transitions. Word has length 268 [2023-12-21 16:05:34,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:05:34,166 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 374 transitions. [2023-12-21 16:05:34,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.1302083333333333) internal successors, (217), 191 states have internal predecessors, (217), 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 16:05:34,166 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 374 transitions. [2023-12-21 16:05:34,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-12-21 16:05:34,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:05:34,170 INFO L195 NwaCegarLoop]: trace histogram [190, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:05:34,199 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 16:05:34,371 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 16:05:34,371 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:05:34,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:05:34,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1504868872, now seen corresponding path program 9 times [2023-12-21 16:05:34,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:05:34,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217752695] [2023-12-21 16:05:34,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 16:05:34,372 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 16:05:34,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:05:34,373 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 16:05:34,374 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 16:05:38,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-12-21 16:05:38,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:05:38,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 16:05:38,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:05:39,133 INFO L134 CoverageAnalysis]: Checked inductivity of 19916 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 19663 trivial. 0 not checked. [2023-12-21 16:05:39,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:05:40,362 INFO L134 CoverageAnalysis]: Checked inductivity of 19916 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 19663 trivial. 0 not checked. [2023-12-21 16:05:40,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:05:40,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217752695] [2023-12-21 16:05:40,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217752695] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:05:40,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:05:40,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2023-12-21 16:05:40,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993999650] [2023-12-21 16:05:40,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:05:40,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 16:05:40,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:05:40,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 16:05:40,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 16:05:40,365 INFO L87 Difference]: Start difference. First operand 366 states and 374 transitions. Second operand has 48 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 48 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 16:05:54,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:05:54,116 INFO L93 Difference]: Finished difference Result 684 states and 866 transitions. [2023-12-21 16:05:54,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 16:05:54,117 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 48 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) Word has length 364 [2023-12-21 16:05:54,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:05:54,119 INFO L225 Difference]: With dead ends: 684 [2023-12-21 16:05:54,119 INFO L226 Difference]: Without dead ends: 534 [2023-12-21 16:05:54,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 702 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 16:05:54,120 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 4258 mSolverCounterSat, 3427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 7685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3427 IncrementalHoareTripleChecker+Valid, 4258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-21 16:05:54,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 7685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3427 Valid, 4258 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-12-21 16:05:54,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2023-12-21 16:05:54,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2023-12-21 16:05:54,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 533 states have (on average 1.0168855534709194) internal successors, (542), 533 states have internal predecessors, (542), 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 16:05:54,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 542 transitions. [2023-12-21 16:05:54,156 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 542 transitions. Word has length 364 [2023-12-21 16:05:54,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:05:54,156 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 542 transitions. [2023-12-21 16:05:54,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 48 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 16:05:54,157 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 542 transitions. [2023-12-21 16:05:54,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-21 16:05:54,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:05:54,160 INFO L195 NwaCegarLoop]: trace histogram [190, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:05:54,189 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 16:05:54,368 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 16:05:54,368 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:05:54,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:05:54,369 INFO L85 PathProgramCache]: Analyzing trace with hash 492239240, now seen corresponding path program 10 times [2023-12-21 16:05:54,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:05:54,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225676048] [2023-12-21 16:05:54,370 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 16:05:54,370 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 16:05:54,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:05:54,371 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 16:05:54,372 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 16:05:55,995 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 16:05:55,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:05:56,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 2644 conjuncts, 192 conjunts are in the unsatisfiable core [2023-12-21 16:05:56,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:06:10,112 INFO L134 CoverageAnalysis]: Checked inductivity of 25712 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 7567 trivial. 0 not checked. [2023-12-21 16:06:10,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:07:30,366 INFO L134 CoverageAnalysis]: Checked inductivity of 25712 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 7567 trivial. 0 not checked. [2023-12-21 16:07:30,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:07:30,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225676048] [2023-12-21 16:07:30,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225676048] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:07:30,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:07:30,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192] total 383 [2023-12-21 16:07:30,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181891570] [2023-12-21 16:07:30,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:07:30,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-12-21 16:07:30,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:07:30,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-12-21 16:07:30,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37246, Invalid=109826, Unknown=0, NotChecked=0, Total=147072 [2023-12-21 16:07:30,381 INFO L87 Difference]: Start difference. First operand 534 states and 542 transitions. Second operand has 384 states, 384 states have (on average 1.0651041666666667) internal successors, (409), 383 states have internal predecessors, (409), 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 16:08:25,179 WARN L293 SmtUtils]: Spent 8.19s 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 16:08:48,219 WARN L293 SmtUtils]: Spent 7.88s 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 16:09:12,798 WARN L293 SmtUtils]: Spent 8.65s 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 16:09:39,547 WARN L293 SmtUtils]: Spent 7.51s 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 16:10:04,375 WARN L293 SmtUtils]: Spent 7.41s on a formula simplification. DAG size of input: 562 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 16:10:33,161 WARN L293 SmtUtils]: Spent 8.61s on a formula simplification. DAG size of input: 559 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-21 16:10:33,562 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 16:10:33,562 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 16:10:33,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2023-12-21 16:10:33,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1069 GetRequests, 680 SyntacticMatches, 0 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 244.0s TimeCoverageRelationStatistics Valid=39550, Invalid=112160, Unknown=0, NotChecked=0, Total=151710 [2023-12-21 16:10:33,611 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36679 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.0s IncrementalHoareTripleChecker+Time [2023-12-21 16:10:33,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 36680 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 36679 Invalid, 0 Unknown, 0 Unchecked, 30.0s Time] [2023-12-21 16:10:33,613 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 16:10:33,654 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 16:10:33,816 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 16:10:33,816 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (534states) and FLOYD_HOARE automaton (currently 199 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 390 known predicates. [2023-12-21 16:10:33,820 INFO L445 BasicCegarLoop]: Path program histogram: [10, 2, 1, 1] [2023-12-21 16:10:33,822 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 16:10:33,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 04:10:33 BoogieIcfgContainer [2023-12-21 16:10:33,823 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 16:10:33,824 INFO L158 Benchmark]: Toolchain (without parser) took 859013.26ms. Allocated memory is still 340.8MB. Free memory was 289.2MB in the beginning and 164.5MB in the end (delta: 124.8MB). Peak memory consumption was 126.1MB. Max. memory is 8.0GB. [2023-12-21 16:10:33,824 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 204.5MB. Free memory is still 153.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 16:10:33,824 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.15ms. Allocated memory is still 340.8MB. Free memory was 289.2MB in the beginning and 277.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-21 16:10:33,824 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.41ms. Allocated memory is still 340.8MB. Free memory was 277.3MB in the beginning and 275.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 16:10:33,825 INFO L158 Benchmark]: Boogie Preprocessor took 59.08ms. Allocated memory is still 340.8MB. Free memory was 275.3MB in the beginning and 272.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 16:10:33,825 INFO L158 Benchmark]: RCFGBuilder took 397.66ms. Allocated memory is still 340.8MB. Free memory was 272.5MB in the beginning and 249.0MB in the end (delta: 23.4MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-21 16:10:33,825 INFO L158 Benchmark]: TraceAbstraction took 858262.39ms. Allocated memory is still 340.8MB. Free memory was 248.4MB in the beginning and 164.5MB in the end (delta: 83.9MB). Peak memory consumption was 85.2MB. Max. memory is 8.0GB. [2023-12-21 16:10:33,826 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 204.5MB. Free memory is still 153.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 248.15ms. Allocated memory is still 340.8MB. Free memory was 289.2MB in the beginning and 277.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.41ms. Allocated memory is still 340.8MB. Free memory was 277.3MB in the beginning and 275.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 59.08ms. Allocated memory is still 340.8MB. Free memory was 275.3MB in the beginning and 272.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 397.66ms. Allocated memory is still 340.8MB. Free memory was 272.5MB in the beginning and 249.0MB in the end (delta: 23.4MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * TraceAbstraction took 858262.39ms. Allocated memory is still 340.8MB. Free memory was 248.4MB in the beginning and 164.5MB in the end (delta: 83.9MB). Peak memory consumption was 85.2MB. 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 (534states) and FLOYD_HOARE automaton (currently 199 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 390 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 858.2s, OverallIterations: 14, TraceHistogramMax: 190, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 715.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 61.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 4173 SdHoareTripleChecker+Invalid, 55.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3912 mSDsCounter, 4523 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56558 IncrementalHoareTripleChecker+Invalid, 61081 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4523 mSolverCounterUnsat, 261 mSDtfsCounter, 56558 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3941 GetRequests, 2888 SyntacticMatches, 0 SemanticMatches, 1052 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5985 ImplicationChecksByTransitivity, 776.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=534occurred 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: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 8.8s SatisfiabilityAnalysisTime, 128.1s InterpolantComputationTime, 1886 NumberOfCodeBlocks, 1668 NumberOfCodeBlocksAsserted, 61 NumberOfCheckSat, 3683 ConstructedInterpolants, 0 QuantifiedInterpolants, 6155 SizeOfPredicates, 0 NumberOfNonLiveVariables, 8116 ConjunctsInSsa, 431 ConjunctsInUnsatCore, 25 InterpolantComputations, 3 PerfectInterpolantSequences, 67344/116002 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