/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:24:36,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:24:36,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:24:36,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 08:24:36,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 08:24:36,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 08:24:36,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 08:24:36,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 08:24:36,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 08:24:36,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 08:24:36,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 08:24:36,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 08:24:36,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:24:36,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:24:36,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:24:36,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:24:36,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:24:36,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:24:36,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:24:36,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:24:36,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:24:36,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:24:36,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:24:36,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:24:36,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 08:24:36,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 08:24:36,989 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 08:24:36,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 08:24:36,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 08:24:36,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 08:24:36,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 08:24:36,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 08:24:36,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 08:24:36,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 08:24:36,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 08:24:36,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 08:24:36,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 08:24:36,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 08:24:36,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:24:36,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:24:36,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:24:37,008 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 08:24:37,025 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:24:37,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:24:37,025 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:24:37,025 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:24:37,026 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 08:24:37,026 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 08:24:37,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:24:37,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:24:37,027 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:24:37,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:24:37,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:24:37,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:24:37,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:24:37,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:24:37,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:24:37,028 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:24:37,028 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:24:37,028 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:24:37,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:24:37,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:24:37,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:24:37,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:24:37,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:24:37,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:24:37,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:24:37,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:24:37,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:24:37,029 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 08:24:37,029 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 08:24:37,029 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:24:37,029 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:24:37,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:24:37,030 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:24:37,030 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:24:37,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:24:37,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:24:37,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:24:37,214 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:24:37,214 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:24:37,215 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.14.cil.c [2022-01-10 08:24:37,260 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf1f59b64/d4b6fb1cfcd1402e9390f0fdc213d80c/FLAGa433dc4ee [2022-01-10 08:24:37,652 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:24:37,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.14.cil.c [2022-01-10 08:24:37,682 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf1f59b64/d4b6fb1cfcd1402e9390f0fdc213d80c/FLAGa433dc4ee [2022-01-10 08:24:37,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf1f59b64/d4b6fb1cfcd1402e9390f0fdc213d80c [2022-01-10 08:24:37,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:24:37,693 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 08:24:37,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:24:37,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:24:37,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:24:37,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:24:37" (1/1) ... [2022-01-10 08:24:37,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2be2e0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:37, skipping insertion in model container [2022-01-10 08:24:37,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:24:37" (1/1) ... [2022-01-10 08:24:37,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:24:37,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:24:37,868 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.14.cil.c[911,924] [2022-01-10 08:24:37,909 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.14.cil.c[8416,8429] [2022-01-10 08:24:37,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:24:37,995 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:24:38,015 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.14.cil.c[911,924] [2022-01-10 08:24:38,028 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.14.cil.c[8416,8429] [2022-01-10 08:24:38,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:24:38,089 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:24:38,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:38 WrapperNode [2022-01-10 08:24:38,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:24:38,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:24:38,090 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:24:38,090 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:24:38,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:38" (1/1) ... [2022-01-10 08:24:38,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:38" (1/1) ... [2022-01-10 08:24:38,158 INFO L137 Inliner]: procedures = 80, calls = 98, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 1040 [2022-01-10 08:24:38,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:24:38,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:24:38,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:24:38,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:24:38,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:38" (1/1) ... [2022-01-10 08:24:38,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:38" (1/1) ... [2022-01-10 08:24:38,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:38" (1/1) ... [2022-01-10 08:24:38,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:38" (1/1) ... [2022-01-10 08:24:38,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:38" (1/1) ... [2022-01-10 08:24:38,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:38" (1/1) ... [2022-01-10 08:24:38,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:38" (1/1) ... [2022-01-10 08:24:38,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:24:38,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:24:38,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:24:38,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:24:38,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:38" (1/1) ... [2022-01-10 08:24:38,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:24:38,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:24:38,257 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 08:24:38,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 08:24:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:24:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 08:24:38,297 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 08:24:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-01-10 08:24:38,297 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-01-10 08:24:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-01-10 08:24:38,297 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-01-10 08:24:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-01-10 08:24:38,297 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-01-10 08:24:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-01-10 08:24:38,297 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-01-10 08:24:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-01-10 08:24:38,298 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-01-10 08:24:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-01-10 08:24:38,298 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-01-10 08:24:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-01-10 08:24:38,298 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-01-10 08:24:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:24:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-01-10 08:24:38,298 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-01-10 08:24:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-01-10 08:24:38,298 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-01-10 08:24:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-01-10 08:24:38,298 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-01-10 08:24:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-01-10 08:24:38,298 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-01-10 08:24:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-01-10 08:24:38,299 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-01-10 08:24:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:24:38,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:24:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-01-10 08:24:38,299 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-01-10 08:24:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-01-10 08:24:38,299 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-01-10 08:24:38,424 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:24:38,425 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:24:39,042 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1bv32 == ~q_free~0); [2022-01-10 08:24:39,042 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1bv32 == ~q_free~0;~c_dr_st~0 := 2bv32;~c_dr_pc~0 := 2bv32;~a_t~0 := do_read_c_~a~0#1; [2022-01-10 08:24:39,110 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:24:39,123 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:24:39,123 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2022-01-10 08:24:39,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:24:39 BoogieIcfgContainer [2022-01-10 08:24:39,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:24:39,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:24:39,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:24:39,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:24:39,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:24:37" (1/3) ... [2022-01-10 08:24:39,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b79fc10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:24:39, skipping insertion in model container [2022-01-10 08:24:39,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:38" (2/3) ... [2022-01-10 08:24:39,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b79fc10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:24:39, skipping insertion in model container [2022-01-10 08:24:39,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:24:39" (3/3) ... [2022-01-10 08:24:39,130 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.14.cil.c [2022-01-10 08:24:39,134 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:24:39,134 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 08:24:39,170 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:24:39,174 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 08:24:39,174 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 08:24:39,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 505 states, 443 states have (on average 1.6410835214446953) internal successors, (727), 451 states have internal predecessors, (727), 44 states have call successors, (44), 15 states have call predecessors, (44), 15 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-10 08:24:39,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:24:39,204 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:39,205 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:39,205 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:39,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:39,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1125668429, now seen corresponding path program 1 times [2022-01-10 08:24:39,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:39,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349922443] [2022-01-10 08:24:39,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:39,217 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:39,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:39,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:24:39,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 08:24:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:39,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:39,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:39,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:24:39,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:39,519 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:39,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349922443] [2022-01-10 08:24:39,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349922443] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:39,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:39,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:39,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222584805] [2022-01-10 08:24:39,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:39,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:39,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:39,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:39,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:39,582 INFO L87 Difference]: Start difference. First operand has 505 states, 443 states have (on average 1.6410835214446953) internal successors, (727), 451 states have internal predecessors, (727), 44 states have call successors, (44), 15 states have call predecessors, (44), 15 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:24:39,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:39,692 INFO L93 Difference]: Finished difference Result 981 states and 1581 transitions. [2022-01-10 08:24:39,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:39,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-01-10 08:24:39,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:39,709 INFO L225 Difference]: With dead ends: 981 [2022-01-10 08:24:39,709 INFO L226 Difference]: Without dead ends: 494 [2022-01-10 08:24:39,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:39,717 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 153 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:39,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 1375 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:39,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-01-10 08:24:39,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 494. [2022-01-10 08:24:39,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 435 states have (on average 1.554022988505747) internal successors, (676), 440 states have internal predecessors, (676), 44 states have call successors, (44), 15 states have call predecessors, (44), 13 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-10 08:24:39,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 760 transitions. [2022-01-10 08:24:39,784 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 760 transitions. Word has length 65 [2022-01-10 08:24:39,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:39,785 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 760 transitions. [2022-01-10 08:24:39,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:24:39,786 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 760 transitions. [2022-01-10 08:24:39,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:24:39,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:39,793 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:39,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:39,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:24:39,994 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:39,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:39,995 INFO L85 PathProgramCache]: Analyzing trace with hash -261116981, now seen corresponding path program 1 times [2022-01-10 08:24:39,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:39,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918451318] [2022-01-10 08:24:39,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:39,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:39,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:39,997 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:24:39,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 08:24:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:40,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 08:24:40,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:24:40,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:40,271 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:40,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918451318] [2022-01-10 08:24:40,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918451318] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:40,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:40,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:24:40,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113118019] [2022-01-10 08:24:40,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:40,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:40,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:40,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:40,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:40,274 INFO L87 Difference]: Start difference. First operand 494 states and 760 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:24:40,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:40,972 INFO L93 Difference]: Finished difference Result 717 states and 1081 transitions. [2022-01-10 08:24:40,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:24:40,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-01-10 08:24:40,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:40,978 INFO L225 Difference]: With dead ends: 717 [2022-01-10 08:24:40,978 INFO L226 Difference]: Without dead ends: 613 [2022-01-10 08:24:40,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:24:40,980 INFO L933 BasicCegarLoop]: 763 mSDtfsCounter, 512 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:40,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 1905 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 08:24:40,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-01-10 08:24:41,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 606. [2022-01-10 08:24:41,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 525 states have (on average 1.5276190476190477) internal successors, (802), 532 states have internal predecessors, (802), 57 states have call successors, (57), 22 states have call predecessors, (57), 22 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2022-01-10 08:24:41,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 917 transitions. [2022-01-10 08:24:41,039 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 917 transitions. Word has length 65 [2022-01-10 08:24:41,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:41,039 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 917 transitions. [2022-01-10 08:24:41,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:24:41,039 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 917 transitions. [2022-01-10 08:24:41,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:24:41,041 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:41,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:41,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-01-10 08:24:41,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:24:41,250 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:41,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:41,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1417771659, now seen corresponding path program 1 times [2022-01-10 08:24:41,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:41,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794095076] [2022-01-10 08:24:41,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:41,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:41,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:41,252 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:24:41,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 08:24:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:41,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:24:41,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:41,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:24:41,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:41,437 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:41,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794095076] [2022-01-10 08:24:41,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794095076] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:41,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:41,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:24:41,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463180127] [2022-01-10 08:24:41,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:41,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:41,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:41,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:41,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:41,438 INFO L87 Difference]: Start difference. First operand 606 states and 917 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:24:42,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:42,105 INFO L93 Difference]: Finished difference Result 1062 states and 1575 transitions. [2022-01-10 08:24:42,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:24:42,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-01-10 08:24:42,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:42,110 INFO L225 Difference]: With dead ends: 1062 [2022-01-10 08:24:42,110 INFO L226 Difference]: Without dead ends: 851 [2022-01-10 08:24:42,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:24:42,112 INFO L933 BasicCegarLoop]: 788 mSDtfsCounter, 504 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:42,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 1970 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 08:24:42,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-01-10 08:24:42,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 843. [2022-01-10 08:24:42,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 714 states have (on average 1.484593837535014) internal successors, (1060), 729 states have internal predecessors, (1060), 83 states have call successors, (83), 36 states have call predecessors, (83), 44 states have return successors, (104), 82 states have call predecessors, (104), 79 states have call successors, (104) [2022-01-10 08:24:42,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1247 transitions. [2022-01-10 08:24:42,166 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1247 transitions. Word has length 65 [2022-01-10 08:24:42,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:42,166 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 1247 transitions. [2022-01-10 08:24:42,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:24:42,166 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1247 transitions. [2022-01-10 08:24:42,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:24:42,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:42,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:42,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:42,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:24:42,376 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:42,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:42,377 INFO L85 PathProgramCache]: Analyzing trace with hash -610814451, now seen corresponding path program 1 times [2022-01-10 08:24:42,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:42,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125012778] [2022-01-10 08:24:42,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:42,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:42,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:42,378 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:24:42,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 08:24:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:42,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:42,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:42,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:24:42,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:42,567 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:42,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125012778] [2022-01-10 08:24:42,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125012778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:42,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:42,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:42,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162137116] [2022-01-10 08:24:42,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:42,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:42,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:42,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:42,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:42,569 INFO L87 Difference]: Start difference. First operand 843 states and 1247 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:24:42,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:42,625 INFO L93 Difference]: Finished difference Result 1679 states and 2404 transitions. [2022-01-10 08:24:42,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:42,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-01-10 08:24:42,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:42,632 INFO L225 Difference]: With dead ends: 1679 [2022-01-10 08:24:42,633 INFO L226 Difference]: Without dead ends: 1245 [2022-01-10 08:24:42,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:42,637 INFO L933 BasicCegarLoop]: 791 mSDtfsCounter, 724 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:42,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [724 Valid, 920 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:42,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2022-01-10 08:24:42,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1233. [2022-01-10 08:24:42,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 1026 states have (on average 1.4434697855750487) internal successors, (1481), 1051 states have internal predecessors, (1481), 123 states have call successors, (123), 64 states have call predecessors, (123), 82 states have return successors, (161), 122 states have call predecessors, (161), 119 states have call successors, (161) [2022-01-10 08:24:42,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1765 transitions. [2022-01-10 08:24:42,674 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1765 transitions. Word has length 65 [2022-01-10 08:24:42,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:42,675 INFO L470 AbstractCegarLoop]: Abstraction has 1233 states and 1765 transitions. [2022-01-10 08:24:42,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:24:42,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1765 transitions. [2022-01-10 08:24:42,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 08:24:42,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:42,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:42,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:42,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:24:42,883 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:42,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:42,883 INFO L85 PathProgramCache]: Analyzing trace with hash -2038334069, now seen corresponding path program 1 times [2022-01-10 08:24:42,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:42,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660498961] [2022-01-10 08:24:42,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:42,884 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:42,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:42,885 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:24:42,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 08:24:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:42,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:24:42,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:43,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:24:43,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:43,088 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:43,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660498961] [2022-01-10 08:24:43,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660498961] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:43,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:43,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:24:43,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884835300] [2022-01-10 08:24:43,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:43,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:24:43,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:43,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:24:43,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:24:43,090 INFO L87 Difference]: Start difference. First operand 1233 states and 1765 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:24:43,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:43,136 INFO L93 Difference]: Finished difference Result 2097 states and 2959 transitions. [2022-01-10 08:24:43,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:24:43,147 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-01-10 08:24:43,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:43,152 INFO L225 Difference]: With dead ends: 2097 [2022-01-10 08:24:43,152 INFO L226 Difference]: Without dead ends: 1273 [2022-01-10 08:24:43,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:24:43,155 INFO L933 BasicCegarLoop]: 760 mSDtfsCounter, 7 mSDsluCounter, 3033 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3793 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:43,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 3793 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:43,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2022-01-10 08:24:43,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1253. [2022-01-10 08:24:43,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 1042 states have (on average 1.4328214971209212) internal successors, (1493), 1067 states have internal predecessors, (1493), 123 states have call successors, (123), 64 states have call predecessors, (123), 86 states have return successors, (165), 126 states have call predecessors, (165), 119 states have call successors, (165) [2022-01-10 08:24:43,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1781 transitions. [2022-01-10 08:24:43,197 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1781 transitions. Word has length 66 [2022-01-10 08:24:43,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:43,197 INFO L470 AbstractCegarLoop]: Abstraction has 1253 states and 1781 transitions. [2022-01-10 08:24:43,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:24:43,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1781 transitions. [2022-01-10 08:24:43,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 08:24:43,199 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:43,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:43,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:43,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:24:43,406 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:43,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:43,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1227273929, now seen corresponding path program 1 times [2022-01-10 08:24:43,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:43,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589651266] [2022-01-10 08:24:43,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:43,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:43,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:43,408 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:24:43,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 08:24:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:43,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:43,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:43,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:24:43,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:43,595 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:43,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589651266] [2022-01-10 08:24:43,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589651266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:43,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:43,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:43,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254667054] [2022-01-10 08:24:43,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:43,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:43,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:43,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:43,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:43,597 INFO L87 Difference]: Start difference. First operand 1253 states and 1781 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:24:43,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:43,653 INFO L93 Difference]: Finished difference Result 2869 states and 3961 transitions. [2022-01-10 08:24:43,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:43,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-01-10 08:24:43,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:43,659 INFO L225 Difference]: With dead ends: 2869 [2022-01-10 08:24:43,660 INFO L226 Difference]: Without dead ends: 2025 [2022-01-10 08:24:43,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:43,664 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 710 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:43,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 899 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:43,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2022-01-10 08:24:43,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 2009. [2022-01-10 08:24:43,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 1638 states have (on average 1.3876678876678876) internal successors, (2273), 1683 states have internal predecessors, (2273), 203 states have call successors, (203), 120 states have call predecessors, (203), 166 states have return successors, (283), 210 states have call predecessors, (283), 199 states have call successors, (283) [2022-01-10 08:24:43,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2759 transitions. [2022-01-10 08:24:43,718 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2759 transitions. Word has length 66 [2022-01-10 08:24:43,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:43,718 INFO L470 AbstractCegarLoop]: Abstraction has 2009 states and 2759 transitions. [2022-01-10 08:24:43,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:24:43,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2759 transitions. [2022-01-10 08:24:43,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 08:24:43,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:43,721 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:43,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:43,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:24:43,928 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:43,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:43,928 INFO L85 PathProgramCache]: Analyzing trace with hash -569755157, now seen corresponding path program 1 times [2022-01-10 08:24:43,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:43,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673701182] [2022-01-10 08:24:43,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:43,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:43,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:43,930 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:24:43,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 08:24:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:44,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:24:44,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:44,135 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 08:24:44,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:44,135 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:44,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673701182] [2022-01-10 08:24:44,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673701182] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:44,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:44,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:24:44,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957032244] [2022-01-10 08:24:44,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:44,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:24:44,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:44,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:24:44,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:24:44,137 INFO L87 Difference]: Start difference. First operand 2009 states and 2759 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:24:44,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:44,196 INFO L93 Difference]: Finished difference Result 3665 states and 4979 transitions. [2022-01-10 08:24:44,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:24:44,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 83 [2022-01-10 08:24:44,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:44,208 INFO L225 Difference]: With dead ends: 3665 [2022-01-10 08:24:44,208 INFO L226 Difference]: Without dead ends: 2065 [2022-01-10 08:24:44,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:24:44,213 INFO L933 BasicCegarLoop]: 757 mSDtfsCounter, 4 mSDsluCounter, 3022 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3779 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:44,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3779 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:44,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2022-01-10 08:24:44,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 2049. [2022-01-10 08:24:44,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2049 states, 1670 states have (on average 1.3754491017964072) internal successors, (2297), 1715 states have internal predecessors, (2297), 203 states have call successors, (203), 120 states have call predecessors, (203), 174 states have return successors, (291), 218 states have call predecessors, (291), 199 states have call successors, (291) [2022-01-10 08:24:44,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 2791 transitions. [2022-01-10 08:24:44,274 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 2791 transitions. Word has length 83 [2022-01-10 08:24:44,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:44,275 INFO L470 AbstractCegarLoop]: Abstraction has 2049 states and 2791 transitions. [2022-01-10 08:24:44,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:24:44,275 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 2791 transitions. [2022-01-10 08:24:44,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 08:24:44,279 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:44,279 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:44,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:44,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:24:44,488 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:44,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:44,488 INFO L85 PathProgramCache]: Analyzing trace with hash 323731181, now seen corresponding path program 1 times [2022-01-10 08:24:44,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:44,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24242082] [2022-01-10 08:24:44,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:44,489 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:44,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:44,490 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:24:44,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 08:24:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:44,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:44,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 08:24:44,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:44,694 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:44,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24242082] [2022-01-10 08:24:44,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24242082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:44,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:44,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:44,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187517541] [2022-01-10 08:24:44,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:44,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:24:44,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:44,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:24:44,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:24:44,695 INFO L87 Difference]: Start difference. First operand 2049 states and 2791 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:24:45,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:45,015 INFO L93 Difference]: Finished difference Result 5285 states and 7090 transitions. [2022-01-10 08:24:45,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:24:45,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 83 [2022-01-10 08:24:45,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:45,030 INFO L225 Difference]: With dead ends: 5285 [2022-01-10 08:24:45,030 INFO L226 Difference]: Without dead ends: 3649 [2022-01-10 08:24:45,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:45,035 INFO L933 BasicCegarLoop]: 732 mSDtfsCounter, 1053 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:45,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1085 Valid, 1153 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:24:45,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3649 states. [2022-01-10 08:24:45,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3649 to 3645. [2022-01-10 08:24:45,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3645 states, 2910 states have (on average 1.3281786941580755) internal successors, (3865), 3003 states have internal predecessors, (3865), 383 states have call successors, (383), 232 states have call predecessors, (383), 350 states have return successors, (628), 418 states have call predecessors, (628), 379 states have call successors, (628) [2022-01-10 08:24:45,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 4876 transitions. [2022-01-10 08:24:45,144 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 4876 transitions. Word has length 83 [2022-01-10 08:24:45,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:45,144 INFO L470 AbstractCegarLoop]: Abstraction has 3645 states and 4876 transitions. [2022-01-10 08:24:45,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:24:45,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 4876 transitions. [2022-01-10 08:24:45,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 08:24:45,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:45,148 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:45,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-01-10 08:24:45,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:24:45,355 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:45,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:45,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1320852191, now seen corresponding path program 1 times [2022-01-10 08:24:45,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:45,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634231772] [2022-01-10 08:24:45,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:45,356 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:45,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:45,356 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:24:45,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 08:24:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:45,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:45,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:45,536 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:24:45,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:45,536 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:45,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634231772] [2022-01-10 08:24:45,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634231772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:45,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:45,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:45,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267456978] [2022-01-10 08:24:45,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:45,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:45,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:45,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:45,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:45,538 INFO L87 Difference]: Start difference. First operand 3645 states and 4876 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 08:24:45,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:45,645 INFO L93 Difference]: Finished difference Result 6945 states and 9271 transitions. [2022-01-10 08:24:45,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:45,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 85 [2022-01-10 08:24:45,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:45,664 INFO L225 Difference]: With dead ends: 6945 [2022-01-10 08:24:45,664 INFO L226 Difference]: Without dead ends: 5213 [2022-01-10 08:24:45,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:45,669 INFO L933 BasicCegarLoop]: 873 mSDtfsCounter, 109 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:45,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 1625 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:45,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5213 states. [2022-01-10 08:24:45,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5213 to 5213. [2022-01-10 08:24:45,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5213 states, 4134 states have (on average 1.3132559264634736) internal successors, (5429), 4267 states have internal predecessors, (5429), 547 states have call successors, (547), 344 states have call predecessors, (547), 530 states have return successors, (960), 610 states have call predecessors, (960), 543 states have call successors, (960) [2022-01-10 08:24:45,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 6936 transitions. [2022-01-10 08:24:45,811 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 6936 transitions. Word has length 85 [2022-01-10 08:24:45,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:45,812 INFO L470 AbstractCegarLoop]: Abstraction has 5213 states and 6936 transitions. [2022-01-10 08:24:45,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 08:24:45,812 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 6936 transitions. [2022-01-10 08:24:45,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-10 08:24:45,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:45,823 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:45,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:46,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:24:46,031 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:46,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:46,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1731854050, now seen corresponding path program 1 times [2022-01-10 08:24:46,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:46,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726905920] [2022-01-10 08:24:46,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:46,032 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:46,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:46,033 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:24:46,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 08:24:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:46,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:24:46,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:46,279 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-10 08:24:46,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:46,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:46,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726905920] [2022-01-10 08:24:46,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726905920] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:46,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:46,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:24:46,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967659096] [2022-01-10 08:24:46,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:46,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:24:46,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:46,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:24:46,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:24:46,281 INFO L87 Difference]: Start difference. First operand 5213 states and 6936 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 08:24:46,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:46,413 INFO L93 Difference]: Finished difference Result 10059 states and 13380 transitions. [2022-01-10 08:24:46,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:24:46,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2022-01-10 08:24:46,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:46,432 INFO L225 Difference]: With dead ends: 10059 [2022-01-10 08:24:46,432 INFO L226 Difference]: Without dead ends: 5279 [2022-01-10 08:24:46,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 08:24:46,442 INFO L933 BasicCegarLoop]: 760 mSDtfsCounter, 37 mSDsluCounter, 3031 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3791 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:46,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 3791 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:46,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5279 states. [2022-01-10 08:24:46,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5279 to 4733. [2022-01-10 08:24:46,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4733 states, 3822 states have (on average 1.303767660910518) internal successors, (4983), 3894 states have internal predecessors, (4983), 451 states have call successors, (451), 293 states have call predecessors, (451), 458 states have return successors, (817), 554 states have call predecessors, (817), 447 states have call successors, (817) [2022-01-10 08:24:46,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4733 states to 4733 states and 6251 transitions. [2022-01-10 08:24:46,602 INFO L78 Accepts]: Start accepts. Automaton has 4733 states and 6251 transitions. Word has length 155 [2022-01-10 08:24:46,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:46,603 INFO L470 AbstractCegarLoop]: Abstraction has 4733 states and 6251 transitions. [2022-01-10 08:24:46,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 08:24:46,604 INFO L276 IsEmpty]: Start isEmpty. Operand 4733 states and 6251 transitions. [2022-01-10 08:24:46,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 08:24:46,615 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:46,615 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:46,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:46,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:24:46,845 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:46,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:46,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1496993541, now seen corresponding path program 1 times [2022-01-10 08:24:46,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:46,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669305753] [2022-01-10 08:24:46,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:46,846 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:46,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:46,847 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:24:46,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 08:24:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:46,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:46,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:47,126 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-01-10 08:24:47,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:47,126 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:47,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669305753] [2022-01-10 08:24:47,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669305753] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:47,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:47,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:47,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487872532] [2022-01-10 08:24:47,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:47,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:47,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:47,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:47,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:47,128 INFO L87 Difference]: Start difference. First operand 4733 states and 6251 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 08:24:47,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:47,194 INFO L93 Difference]: Finished difference Result 7295 states and 9569 transitions. [2022-01-10 08:24:47,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:47,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 156 [2022-01-10 08:24:47,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:47,213 INFO L225 Difference]: With dead ends: 7295 [2022-01-10 08:24:47,213 INFO L226 Difference]: Without dead ends: 3039 [2022-01-10 08:24:47,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:47,222 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 148 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:47,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 1361 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:47,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3039 states. [2022-01-10 08:24:47,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3039 to 3039. [2022-01-10 08:24:47,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3039 states, 2470 states have (on average 1.3206477732793522) internal successors, (3262), 2516 states have internal predecessors, (3262), 275 states have call successors, (275), 181 states have call predecessors, (275), 292 states have return successors, (497), 342 states have call predecessors, (497), 271 states have call successors, (497) [2022-01-10 08:24:47,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3039 states to 3039 states and 4034 transitions. [2022-01-10 08:24:47,293 INFO L78 Accepts]: Start accepts. Automaton has 3039 states and 4034 transitions. Word has length 156 [2022-01-10 08:24:47,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:47,294 INFO L470 AbstractCegarLoop]: Abstraction has 3039 states and 4034 transitions. [2022-01-10 08:24:47,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 08:24:47,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3039 states and 4034 transitions. [2022-01-10 08:24:47,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 08:24:47,300 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:47,301 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:47,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:47,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:24:47,509 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:47,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:47,509 INFO L85 PathProgramCache]: Analyzing trace with hash 242587629, now seen corresponding path program 1 times [2022-01-10 08:24:47,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:47,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861914994] [2022-01-10 08:24:47,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:47,510 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:47,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:47,511 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:24:47,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 08:24:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:47,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:47,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:47,851 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-10 08:24:47,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:47,851 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:47,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861914994] [2022-01-10 08:24:47,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861914994] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:47,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:47,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:47,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480728690] [2022-01-10 08:24:47,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:47,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:47,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:47,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:47,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:47,853 INFO L87 Difference]: Start difference. First operand 3039 states and 4034 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 08:24:47,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:47,934 INFO L93 Difference]: Finished difference Result 7161 states and 9517 transitions. [2022-01-10 08:24:47,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:47,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 159 [2022-01-10 08:24:47,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:47,948 INFO L225 Difference]: With dead ends: 7161 [2022-01-10 08:24:47,948 INFO L226 Difference]: Without dead ends: 4823 [2022-01-10 08:24:47,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:47,954 INFO L933 BasicCegarLoop]: 788 mSDtfsCounter, 68 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:47,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 1526 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:47,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4823 states. [2022-01-10 08:24:48,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4823 to 4795. [2022-01-10 08:24:48,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4795 states, 3888 states have (on average 1.3094135802469136) internal successors, (5091), 3970 states have internal predecessors, (5091), 431 states have call successors, (431), 289 states have call predecessors, (431), 474 states have return successors, (806), 536 states have call predecessors, (806), 427 states have call successors, (806) [2022-01-10 08:24:48,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4795 states to 4795 states and 6328 transitions. [2022-01-10 08:24:48,102 INFO L78 Accepts]: Start accepts. Automaton has 4795 states and 6328 transitions. Word has length 159 [2022-01-10 08:24:48,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:48,102 INFO L470 AbstractCegarLoop]: Abstraction has 4795 states and 6328 transitions. [2022-01-10 08:24:48,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 08:24:48,102 INFO L276 IsEmpty]: Start isEmpty. Operand 4795 states and 6328 transitions. [2022-01-10 08:24:48,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 08:24:48,125 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:48,125 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:48,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:48,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:24:48,332 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:48,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:48,333 INFO L85 PathProgramCache]: Analyzing trace with hash 465672375, now seen corresponding path program 1 times [2022-01-10 08:24:48,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:48,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788464880] [2022-01-10 08:24:48,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:48,333 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:48,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:48,334 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:24:48,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 08:24:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:48,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:48,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:48,619 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 08:24:48,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:48,620 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:48,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788464880] [2022-01-10 08:24:48,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788464880] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:48,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:48,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:48,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116652781] [2022-01-10 08:24:48,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:48,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:48,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:48,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:48,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:48,621 INFO L87 Difference]: Start difference. First operand 4795 states and 6328 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 08:24:48,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:48,769 INFO L93 Difference]: Finished difference Result 12527 states and 16885 transitions. [2022-01-10 08:24:48,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:48,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 160 [2022-01-10 08:24:48,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:48,799 INFO L225 Difference]: With dead ends: 12527 [2022-01-10 08:24:48,800 INFO L226 Difference]: Without dead ends: 8433 [2022-01-10 08:24:48,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:48,813 INFO L933 BasicCegarLoop]: 830 mSDtfsCounter, 102 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:48,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 1572 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:48,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8433 states. [2022-01-10 08:24:49,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8433 to 8357. [2022-01-10 08:24:49,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8357 states, 6750 states have (on average 1.2828148148148149) internal successors, (8659), 6882 states have internal predecessors, (8659), 767 states have call successors, (767), 523 states have call predecessors, (767), 838 states have return successors, (1604), 952 states have call predecessors, (1604), 763 states have call successors, (1604) [2022-01-10 08:24:49,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8357 states to 8357 states and 11030 transitions. [2022-01-10 08:24:49,042 INFO L78 Accepts]: Start accepts. Automaton has 8357 states and 11030 transitions. Word has length 160 [2022-01-10 08:24:49,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:49,043 INFO L470 AbstractCegarLoop]: Abstraction has 8357 states and 11030 transitions. [2022-01-10 08:24:49,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 08:24:49,043 INFO L276 IsEmpty]: Start isEmpty. Operand 8357 states and 11030 transitions. [2022-01-10 08:24:49,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-10 08:24:49,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:49,055 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:49,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:49,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:24:49,262 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:49,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:49,263 INFO L85 PathProgramCache]: Analyzing trace with hash 875961771, now seen corresponding path program 1 times [2022-01-10 08:24:49,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:49,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227153834] [2022-01-10 08:24:49,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:49,263 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:49,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:49,265 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:24:49,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 08:24:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:49,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:49,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:49,603 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-10 08:24:49,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:49,603 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:49,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227153834] [2022-01-10 08:24:49,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227153834] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:49,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:49,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:49,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020024408] [2022-01-10 08:24:49,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:49,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:49,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:49,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:49,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:49,605 INFO L87 Difference]: Start difference. First operand 8357 states and 11030 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-01-10 08:24:49,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:49,863 INFO L93 Difference]: Finished difference Result 23527 states and 31245 transitions. [2022-01-10 08:24:49,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:49,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 161 [2022-01-10 08:24:49,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:49,971 INFO L225 Difference]: With dead ends: 23527 [2022-01-10 08:24:49,971 INFO L226 Difference]: Without dead ends: 15871 [2022-01-10 08:24:49,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:49,986 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 72 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:49,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 1510 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:50,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15871 states. [2022-01-10 08:24:50,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15871 to 15867. [2022-01-10 08:24:50,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15867 states, 12783 states have (on average 1.266447625752953) internal successors, (16189), 13044 states have internal predecessors, (16189), 1475 states have call successors, (1475), 1009 states have call predecessors, (1475), 1607 states have return successors, (3078), 1814 states have call predecessors, (3078), 1471 states have call successors, (3078) [2022-01-10 08:24:50,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15867 states to 15867 states and 20742 transitions. [2022-01-10 08:24:50,477 INFO L78 Accepts]: Start accepts. Automaton has 15867 states and 20742 transitions. Word has length 161 [2022-01-10 08:24:50,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:50,478 INFO L470 AbstractCegarLoop]: Abstraction has 15867 states and 20742 transitions. [2022-01-10 08:24:50,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-01-10 08:24:50,478 INFO L276 IsEmpty]: Start isEmpty. Operand 15867 states and 20742 transitions. [2022-01-10 08:24:50,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-10 08:24:50,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:50,497 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:50,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:50,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:24:50,704 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:50,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:50,705 INFO L85 PathProgramCache]: Analyzing trace with hash -709158519, now seen corresponding path program 1 times [2022-01-10 08:24:50,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:50,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137249589] [2022-01-10 08:24:50,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:50,705 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:50,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:50,706 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:24:50,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 08:24:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:50,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:50,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:51,008 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-01-10 08:24:51,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:51,009 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:51,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137249589] [2022-01-10 08:24:51,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137249589] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:51,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:51,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:51,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673701504] [2022-01-10 08:24:51,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:51,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:51,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:51,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:51,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:51,010 INFO L87 Difference]: Start difference. First operand 15867 states and 20742 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 08:24:52,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:52,202 INFO L93 Difference]: Finished difference Result 45420 states and 59396 transitions. [2022-01-10 08:24:52,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:24:52,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 166 [2022-01-10 08:24:52,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:52,313 INFO L225 Difference]: With dead ends: 45420 [2022-01-10 08:24:52,313 INFO L226 Difference]: Without dead ends: 29939 [2022-01-10 08:24:52,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-10 08:24:52,356 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 1077 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:52,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1114 Valid, 1496 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 08:24:52,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29939 states. [2022-01-10 08:24:53,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29939 to 29763. [2022-01-10 08:24:53,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29763 states, 23773 states have (on average 1.2562150338619442) internal successors, (29864), 24257 states have internal predecessors, (29864), 2870 states have call successors, (2870), 1960 states have call predecessors, (2870), 3118 states have return successors, (5872), 3546 states have call predecessors, (5872), 2866 states have call successors, (5872) [2022-01-10 08:24:53,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29763 states to 29763 states and 38606 transitions. [2022-01-10 08:24:53,376 INFO L78 Accepts]: Start accepts. Automaton has 29763 states and 38606 transitions. Word has length 166 [2022-01-10 08:24:53,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:53,376 INFO L470 AbstractCegarLoop]: Abstraction has 29763 states and 38606 transitions. [2022-01-10 08:24:53,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 08:24:53,376 INFO L276 IsEmpty]: Start isEmpty. Operand 29763 states and 38606 transitions. [2022-01-10 08:24:53,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-10 08:24:53,403 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:53,404 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:53,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:53,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:24:53,612 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:53,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:53,612 INFO L85 PathProgramCache]: Analyzing trace with hash 785633432, now seen corresponding path program 1 times [2022-01-10 08:24:53,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:53,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532533527] [2022-01-10 08:24:53,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:53,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:53,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:53,627 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:24:53,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 08:24:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:53,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:53,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:53,928 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-01-10 08:24:53,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:53,928 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:53,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532533527] [2022-01-10 08:24:53,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532533527] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:53,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:53,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:53,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185480189] [2022-01-10 08:24:53,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:53,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:24:53,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:53,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:24:53,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:24:53,931 INFO L87 Difference]: Start difference. First operand 29763 states and 38606 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-01-10 08:24:54,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:54,809 INFO L93 Difference]: Finished difference Result 47391 states and 61703 transitions. [2022-01-10 08:24:54,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:24:54,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 185 [2022-01-10 08:24:54,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:54,865 INFO L225 Difference]: With dead ends: 47391 [2022-01-10 08:24:54,865 INFO L226 Difference]: Without dead ends: 18056 [2022-01-10 08:24:54,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:54,910 INFO L933 BasicCegarLoop]: 753 mSDtfsCounter, 1003 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:54,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1032 Valid, 1174 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:24:54,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18056 states. [2022-01-10 08:24:55,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18056 to 18056. [2022-01-10 08:24:55,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18056 states, 14642 states have (on average 1.2599371670536812) internal successors, (18448), 14892 states have internal predecessors, (18448), 1646 states have call successors, (1646), 1064 states have call predecessors, (1646), 1766 states have return successors, (3252), 2100 states have call predecessors, (3252), 1642 states have call successors, (3252) [2022-01-10 08:24:55,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18056 states to 18056 states and 23346 transitions. [2022-01-10 08:24:55,431 INFO L78 Accepts]: Start accepts. Automaton has 18056 states and 23346 transitions. Word has length 185 [2022-01-10 08:24:55,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:55,431 INFO L470 AbstractCegarLoop]: Abstraction has 18056 states and 23346 transitions. [2022-01-10 08:24:55,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-01-10 08:24:55,432 INFO L276 IsEmpty]: Start isEmpty. Operand 18056 states and 23346 transitions. [2022-01-10 08:24:55,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-10 08:24:55,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:55,448 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:55,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:55,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:24:55,656 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:55,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:55,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1038853074, now seen corresponding path program 2 times [2022-01-10 08:24:55,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:55,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840066506] [2022-01-10 08:24:55,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 08:24:55,657 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:55,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:55,659 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:24:55,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 08:24:55,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 08:24:55,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 08:24:55,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:55,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:55,928 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-01-10 08:24:55,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:55,928 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:55,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840066506] [2022-01-10 08:24:55,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1840066506] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:55,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:55,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:24:55,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616598197] [2022-01-10 08:24:55,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:55,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:55,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:55,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:55,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:55,930 INFO L87 Difference]: Start difference. First operand 18056 states and 23346 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-01-10 08:24:57,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:57,198 INFO L93 Difference]: Finished difference Result 42294 states and 55058 transitions. [2022-01-10 08:24:57,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:24:57,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 185 [2022-01-10 08:24:57,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:57,296 INFO L225 Difference]: With dead ends: 42294 [2022-01-10 08:24:57,296 INFO L226 Difference]: Without dead ends: 24830 [2022-01-10 08:24:57,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:24:57,338 INFO L933 BasicCegarLoop]: 879 mSDtfsCounter, 444 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:57,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 1717 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 08:24:57,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24830 states. [2022-01-10 08:24:58,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24830 to 23442. [2022-01-10 08:24:58,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23442 states, 19222 states have (on average 1.2498179169701384) internal successors, (24024), 19492 states have internal predecessors, (24024), 2068 states have call successors, (2068), 1392 states have call predecessors, (2068), 2150 states have return successors, (4316), 2558 states have call predecessors, (4316), 2064 states have call successors, (4316) [2022-01-10 08:24:58,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23442 states to 23442 states and 30408 transitions. [2022-01-10 08:24:58,130 INFO L78 Accepts]: Start accepts. Automaton has 23442 states and 30408 transitions. Word has length 185 [2022-01-10 08:24:58,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:58,130 INFO L470 AbstractCegarLoop]: Abstraction has 23442 states and 30408 transitions. [2022-01-10 08:24:58,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-01-10 08:24:58,130 INFO L276 IsEmpty]: Start isEmpty. Operand 23442 states and 30408 transitions. [2022-01-10 08:24:58,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-10 08:24:58,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:58,141 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:58,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-01-10 08:24:58,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:24:58,348 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:58,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:58,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1932339412, now seen corresponding path program 1 times [2022-01-10 08:24:58,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:58,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682211850] [2022-01-10 08:24:58,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:58,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:58,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:58,350 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:24:58,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 08:24:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:58,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:58,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:58,699 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-01-10 08:24:58,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:58,700 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:58,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682211850] [2022-01-10 08:24:58,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682211850] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:58,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:58,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:58,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399895888] [2022-01-10 08:24:58,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:58,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:58,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:58,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:58,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:58,701 INFO L87 Difference]: Start difference. First operand 23442 states and 30408 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 08:24:59,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:59,224 INFO L93 Difference]: Finished difference Result 46257 states and 59907 transitions. [2022-01-10 08:24:59,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:59,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 185 [2022-01-10 08:24:59,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:59,290 INFO L225 Difference]: With dead ends: 46257 [2022-01-10 08:24:59,290 INFO L226 Difference]: Without dead ends: 23274 [2022-01-10 08:24:59,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:59,334 INFO L933 BasicCegarLoop]: 839 mSDtfsCounter, 115 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:59,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 1569 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:59,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23274 states. [2022-01-10 08:24:59,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23274 to 23270. [2022-01-10 08:24:59,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23270 states, 19064 states have (on average 1.2288606798153587) internal successors, (23427), 19362 states have internal predecessors, (23427), 2061 states have call successors, (2061), 1385 states have call predecessors, (2061), 2143 states have return successors, (3809), 2523 states have call predecessors, (3809), 2057 states have call successors, (3809) [2022-01-10 08:25:00,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23270 states to 23270 states and 29297 transitions. [2022-01-10 08:25:00,027 INFO L78 Accepts]: Start accepts. Automaton has 23270 states and 29297 transitions. Word has length 185 [2022-01-10 08:25:00,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:00,027 INFO L470 AbstractCegarLoop]: Abstraction has 23270 states and 29297 transitions. [2022-01-10 08:25:00,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 08:25:00,028 INFO L276 IsEmpty]: Start isEmpty. Operand 23270 states and 29297 transitions. [2022-01-10 08:25:00,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-01-10 08:25:00,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:00,030 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:00,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:00,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:00,238 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:00,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:00,238 INFO L85 PathProgramCache]: Analyzing trace with hash 985813192, now seen corresponding path program 1 times [2022-01-10 08:25:00,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:00,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285201270] [2022-01-10 08:25:00,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:00,238 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:00,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:00,239 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:00,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 08:25:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:00,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:25:00,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:00,547 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-10 08:25:00,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:00,547 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:00,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285201270] [2022-01-10 08:25:00,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285201270] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:00,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:00,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:25:00,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146551107] [2022-01-10 08:25:00,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:00,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:25:00,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:00,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:25:00,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:25:00,549 INFO L87 Difference]: Start difference. First operand 23270 states and 29297 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-01-10 08:25:01,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:01,119 INFO L93 Difference]: Finished difference Result 39946 states and 51163 transitions. [2022-01-10 08:25:01,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:25:01,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 191 [2022-01-10 08:25:01,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:01,127 INFO L225 Difference]: With dead ends: 39946 [2022-01-10 08:25:01,128 INFO L226 Difference]: Without dead ends: 383 [2022-01-10 08:25:01,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:25:01,176 INFO L933 BasicCegarLoop]: 797 mSDtfsCounter, 88 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:01,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 1466 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:01,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-01-10 08:25:01,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2022-01-10 08:25:01,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 348 states have (on average 1.5804597701149425) internal successors, (550), 350 states have internal predecessors, (550), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 08:25:01,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 604 transitions. [2022-01-10 08:25:01,188 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 604 transitions. Word has length 191 [2022-01-10 08:25:01,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:01,189 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 604 transitions. [2022-01-10 08:25:01,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-01-10 08:25:01,189 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 604 transitions. [2022-01-10 08:25:01,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:01,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:01,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:01,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:01,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:01,392 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:01,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:01,392 INFO L85 PathProgramCache]: Analyzing trace with hash -174258653, now seen corresponding path program 1 times [2022-01-10 08:25:01,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:01,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392430698] [2022-01-10 08:25:01,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:01,393 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:01,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:01,394 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:01,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 08:25:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:01,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:25:01,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:01,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:01,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:01,741 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:01,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392430698] [2022-01-10 08:25:01,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392430698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:01,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:01,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:25:01,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514579227] [2022-01-10 08:25:01,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:01,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:25:01,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:01,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:25:01,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:25:01,743 INFO L87 Difference]: Start difference. First operand 383 states and 604 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:01,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:01,761 INFO L93 Difference]: Finished difference Result 759 states and 1199 transitions. [2022-01-10 08:25:01,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:25:01,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:01,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:01,762 INFO L225 Difference]: With dead ends: 759 [2022-01-10 08:25:01,762 INFO L226 Difference]: Without dead ends: 383 [2022-01-10 08:25:01,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:25:01,764 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 595 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:01,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 603 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:01,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-01-10 08:25:01,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2022-01-10 08:25:01,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 348 states have (on average 1.5775862068965518) internal successors, (549), 350 states have internal predecessors, (549), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 08:25:01,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 603 transitions. [2022-01-10 08:25:01,773 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 603 transitions. Word has length 179 [2022-01-10 08:25:01,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:01,773 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 603 transitions. [2022-01-10 08:25:01,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:01,773 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 603 transitions. [2022-01-10 08:25:01,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:01,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:01,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:01,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:01,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:01,983 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:01,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:01,984 INFO L85 PathProgramCache]: Analyzing trace with hash -822851423, now seen corresponding path program 1 times [2022-01-10 08:25:01,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:01,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950269412] [2022-01-10 08:25:01,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:01,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:01,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:01,985 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:01,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 08:25:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:02,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:25:02,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:02,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:02,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:02,323 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:02,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950269412] [2022-01-10 08:25:02,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950269412] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:02,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:02,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:25:02,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757241363] [2022-01-10 08:25:02,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:02,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:25:02,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:02,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:25:02,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:25:02,324 INFO L87 Difference]: Start difference. First operand 383 states and 603 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:02,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:02,346 INFO L93 Difference]: Finished difference Result 751 states and 1182 transitions. [2022-01-10 08:25:02,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:25:02,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:02,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:02,348 INFO L225 Difference]: With dead ends: 751 [2022-01-10 08:25:02,348 INFO L226 Difference]: Without dead ends: 383 [2022-01-10 08:25:02,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:25:02,349 INFO L933 BasicCegarLoop]: 601 mSDtfsCounter, 586 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:02,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 602 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:02,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-01-10 08:25:02,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2022-01-10 08:25:02,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 348 states have (on average 1.5747126436781609) internal successors, (548), 350 states have internal predecessors, (548), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 08:25:02,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 602 transitions. [2022-01-10 08:25:02,361 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 602 transitions. Word has length 179 [2022-01-10 08:25:02,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:02,362 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 602 transitions. [2022-01-10 08:25:02,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:02,362 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 602 transitions. [2022-01-10 08:25:02,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:02,363 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:02,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:02,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-01-10 08:25:02,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:02,574 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:02,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:02,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1321408225, now seen corresponding path program 1 times [2022-01-10 08:25:02,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:02,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083704628] [2022-01-10 08:25:02,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:02,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:02,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:02,576 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:02,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 08:25:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:02,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:02,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:02,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:02,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:02,962 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:02,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083704628] [2022-01-10 08:25:02,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083704628] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:02,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:02,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:02,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773051943] [2022-01-10 08:25:02,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:02,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:02,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:02,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:02,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:02,964 INFO L87 Difference]: Start difference. First operand 383 states and 602 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:03,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:03,542 INFO L93 Difference]: Finished difference Result 1155 states and 1836 transitions. [2022-01-10 08:25:03,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:03,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:03,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:03,546 INFO L225 Difference]: With dead ends: 1155 [2022-01-10 08:25:03,546 INFO L226 Difference]: Without dead ends: 793 [2022-01-10 08:25:03,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:03,549 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 1157 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:03,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1177 Valid, 1850 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:25:03,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-01-10 08:25:03,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 762. [2022-01-10 08:25:03,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 699 states have (on average 1.5879828326180256) internal successors, (1110), 702 states have internal predecessors, (1110), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:25:03,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1207 transitions. [2022-01-10 08:25:03,568 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1207 transitions. Word has length 179 [2022-01-10 08:25:03,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:03,568 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1207 transitions. [2022-01-10 08:25:03,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:03,568 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1207 transitions. [2022-01-10 08:25:03,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:03,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:03,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:03,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-01-10 08:25:03,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:03,774 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:03,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:03,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1587819291, now seen corresponding path program 1 times [2022-01-10 08:25:03,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:03,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445426605] [2022-01-10 08:25:03,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:03,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:03,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:03,777 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:03,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 08:25:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:03,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:03,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:04,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:04,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:04,139 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:04,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445426605] [2022-01-10 08:25:04,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445426605] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:04,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:04,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:04,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793209184] [2022-01-10 08:25:04,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:04,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:04,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:04,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:04,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:04,140 INFO L87 Difference]: Start difference. First operand 762 states and 1207 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:04,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:04,444 INFO L93 Difference]: Finished difference Result 1503 states and 2387 transitions. [2022-01-10 08:25:04,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:04,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:04,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:04,447 INFO L225 Difference]: With dead ends: 1503 [2022-01-10 08:25:04,447 INFO L226 Difference]: Without dead ends: 762 [2022-01-10 08:25:04,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:04,448 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 816 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:04,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [836 Valid, 1225 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:04,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-01-10 08:25:04,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 762. [2022-01-10 08:25:04,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 699 states have (on average 1.5779685264663805) internal successors, (1103), 702 states have internal predecessors, (1103), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:25:04,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1200 transitions. [2022-01-10 08:25:04,468 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1200 transitions. Word has length 179 [2022-01-10 08:25:04,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:04,469 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1200 transitions. [2022-01-10 08:25:04,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:04,469 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1200 transitions. [2022-01-10 08:25:04,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:04,480 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:04,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:04,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:04,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:04,689 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:04,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:04,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1072837609, now seen corresponding path program 1 times [2022-01-10 08:25:04,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:04,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78551304] [2022-01-10 08:25:04,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:04,690 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:04,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:04,691 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:04,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 08:25:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:04,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:04,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:05,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:05,058 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:05,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78551304] [2022-01-10 08:25:05,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78551304] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:05,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:05,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:05,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467085402] [2022-01-10 08:25:05,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:05,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:05,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:05,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:05,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:05,064 INFO L87 Difference]: Start difference. First operand 762 states and 1200 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:05,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:05,381 INFO L93 Difference]: Finished difference Result 1503 states and 2373 transitions. [2022-01-10 08:25:05,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:05,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:05,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:05,384 INFO L225 Difference]: With dead ends: 1503 [2022-01-10 08:25:05,384 INFO L226 Difference]: Without dead ends: 762 [2022-01-10 08:25:05,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:05,385 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 810 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:05,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [830 Valid, 1218 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:05,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-01-10 08:25:05,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 762. [2022-01-10 08:25:05,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 699 states have (on average 1.5679542203147354) internal successors, (1096), 702 states have internal predecessors, (1096), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:25:05,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1193 transitions. [2022-01-10 08:25:05,401 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1193 transitions. Word has length 179 [2022-01-10 08:25:05,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:05,401 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1193 transitions. [2022-01-10 08:25:05,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:05,401 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1193 transitions. [2022-01-10 08:25:05,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:05,402 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:05,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:05,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:05,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:05,611 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:05,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:05,612 INFO L85 PathProgramCache]: Analyzing trace with hash 919544731, now seen corresponding path program 1 times [2022-01-10 08:25:05,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:05,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268280155] [2022-01-10 08:25:05,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:05,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:05,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:05,613 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:05,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 08:25:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:05,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:05,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:05,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:05,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:05,960 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:05,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268280155] [2022-01-10 08:25:05,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268280155] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:05,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:05,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:05,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900531393] [2022-01-10 08:25:05,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:05,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:05,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:05,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:05,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:05,962 INFO L87 Difference]: Start difference. First operand 762 states and 1193 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:06,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:06,283 INFO L93 Difference]: Finished difference Result 1503 states and 2359 transitions. [2022-01-10 08:25:06,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:06,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:06,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:06,285 INFO L225 Difference]: With dead ends: 1503 [2022-01-10 08:25:06,285 INFO L226 Difference]: Without dead ends: 762 [2022-01-10 08:25:06,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:06,287 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 804 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:06,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 1211 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:06,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-01-10 08:25:06,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 762. [2022-01-10 08:25:06,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 699 states have (on average 1.55793991416309) internal successors, (1089), 702 states have internal predecessors, (1089), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:25:06,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1186 transitions. [2022-01-10 08:25:06,302 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1186 transitions. Word has length 179 [2022-01-10 08:25:06,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:06,302 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1186 transitions. [2022-01-10 08:25:06,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:06,302 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1186 transitions. [2022-01-10 08:25:06,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:06,303 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:06,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:06,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:06,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:06,512 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:06,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:06,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1232942185, now seen corresponding path program 1 times [2022-01-10 08:25:06,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:06,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122430342] [2022-01-10 08:25:06,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:06,513 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:06,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:06,514 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:06,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 08:25:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:06,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:06,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:06,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:06,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:06,881 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:06,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122430342] [2022-01-10 08:25:06,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122430342] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:06,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:06,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:06,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019402582] [2022-01-10 08:25:06,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:06,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:06,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:06,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:06,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:06,882 INFO L87 Difference]: Start difference. First operand 762 states and 1186 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:07,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:07,199 INFO L93 Difference]: Finished difference Result 1503 states and 2345 transitions. [2022-01-10 08:25:07,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:07,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:07,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:07,201 INFO L225 Difference]: With dead ends: 1503 [2022-01-10 08:25:07,201 INFO L226 Difference]: Without dead ends: 762 [2022-01-10 08:25:07,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:07,202 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 798 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:07,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [818 Valid, 1204 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:07,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-01-10 08:25:07,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 762. [2022-01-10 08:25:07,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 699 states have (on average 1.547925608011445) internal successors, (1082), 702 states have internal predecessors, (1082), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:25:07,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1179 transitions. [2022-01-10 08:25:07,219 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1179 transitions. Word has length 179 [2022-01-10 08:25:07,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:07,219 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1179 transitions. [2022-01-10 08:25:07,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:07,219 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1179 transitions. [2022-01-10 08:25:07,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:07,220 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:07,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:07,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:07,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:07,428 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:07,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:07,429 INFO L85 PathProgramCache]: Analyzing trace with hash 637285403, now seen corresponding path program 1 times [2022-01-10 08:25:07,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:07,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4323097] [2022-01-10 08:25:07,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:07,429 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:07,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:07,431 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:07,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 08:25:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:07,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:07,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:07,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:07,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:07,769 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:07,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4323097] [2022-01-10 08:25:07,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4323097] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:07,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:07,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:07,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834198281] [2022-01-10 08:25:07,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:07,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:07,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:07,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:07,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:07,770 INFO L87 Difference]: Start difference. First operand 762 states and 1179 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:08,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:08,078 INFO L93 Difference]: Finished difference Result 1503 states and 2331 transitions. [2022-01-10 08:25:08,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:08,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:08,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:08,080 INFO L225 Difference]: With dead ends: 1503 [2022-01-10 08:25:08,080 INFO L226 Difference]: Without dead ends: 762 [2022-01-10 08:25:08,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:08,081 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 792 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:08,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [812 Valid, 1197 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:08,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-01-10 08:25:08,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 762. [2022-01-10 08:25:08,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 699 states have (on average 1.5379113018597996) internal successors, (1075), 702 states have internal predecessors, (1075), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:25:08,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1172 transitions. [2022-01-10 08:25:08,099 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1172 transitions. Word has length 179 [2022-01-10 08:25:08,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:08,099 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1172 transitions. [2022-01-10 08:25:08,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:08,099 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1172 transitions. [2022-01-10 08:25:08,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:08,100 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:08,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:08,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:08,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:08,304 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:08,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:08,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1657689321, now seen corresponding path program 1 times [2022-01-10 08:25:08,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:08,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675966475] [2022-01-10 08:25:08,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:08,305 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:08,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:08,306 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:08,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 08:25:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:08,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:08,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:08,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:08,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:08,629 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:08,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675966475] [2022-01-10 08:25:08,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675966475] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:08,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:08,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:08,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599778323] [2022-01-10 08:25:08,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:08,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:08,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:08,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:08,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:08,630 INFO L87 Difference]: Start difference. First operand 762 states and 1172 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:08,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:08,932 INFO L93 Difference]: Finished difference Result 1503 states and 2317 transitions. [2022-01-10 08:25:08,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:08,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:08,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:08,934 INFO L225 Difference]: With dead ends: 1503 [2022-01-10 08:25:08,934 INFO L226 Difference]: Without dead ends: 762 [2022-01-10 08:25:08,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:08,935 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 786 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:08,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [806 Valid, 1190 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:08,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-01-10 08:25:08,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 762. [2022-01-10 08:25:08,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 699 states have (on average 1.5278969957081545) internal successors, (1068), 702 states have internal predecessors, (1068), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:25:08,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1165 transitions. [2022-01-10 08:25:08,953 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1165 transitions. Word has length 179 [2022-01-10 08:25:08,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:08,953 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1165 transitions. [2022-01-10 08:25:08,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:08,953 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1165 transitions. [2022-01-10 08:25:08,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:08,954 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:08,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:08,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:09,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:09,154 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:09,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:09,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1271826919, now seen corresponding path program 1 times [2022-01-10 08:25:09,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:09,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804564709] [2022-01-10 08:25:09,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:09,155 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:09,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:09,156 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:09,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 08:25:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:09,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:09,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:09,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:09,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:09,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:09,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804564709] [2022-01-10 08:25:09,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804564709] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:09,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:09,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:09,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871688710] [2022-01-10 08:25:09,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:09,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:09,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:09,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:09,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:09,476 INFO L87 Difference]: Start difference. First operand 762 states and 1165 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:09,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:09,765 INFO L93 Difference]: Finished difference Result 1503 states and 2303 transitions. [2022-01-10 08:25:09,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:09,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:09,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:09,766 INFO L225 Difference]: With dead ends: 1503 [2022-01-10 08:25:09,766 INFO L226 Difference]: Without dead ends: 762 [2022-01-10 08:25:09,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:09,768 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 780 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:09,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [800 Valid, 1183 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:09,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-01-10 08:25:09,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 762. [2022-01-10 08:25:09,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 699 states have (on average 1.5178826895565094) internal successors, (1061), 702 states have internal predecessors, (1061), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:25:09,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1158 transitions. [2022-01-10 08:25:09,787 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1158 transitions. Word has length 179 [2022-01-10 08:25:09,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:09,787 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1158 transitions. [2022-01-10 08:25:09,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:09,787 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1158 transitions. [2022-01-10 08:25:09,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:09,788 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:09,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:09,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:09,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:09,996 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:09,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:09,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1729133589, now seen corresponding path program 1 times [2022-01-10 08:25:09,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:09,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859337999] [2022-01-10 08:25:09,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:09,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:09,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:09,998 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:10,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 08:25:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:10,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:10,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:10,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:10,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:10,444 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:10,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859337999] [2022-01-10 08:25:10,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [859337999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:10,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:10,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:10,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826726343] [2022-01-10 08:25:10,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:10,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:10,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:10,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:10,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:10,445 INFO L87 Difference]: Start difference. First operand 762 states and 1158 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:10,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:10,755 INFO L93 Difference]: Finished difference Result 1503 states and 2289 transitions. [2022-01-10 08:25:10,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:10,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:10,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:10,757 INFO L225 Difference]: With dead ends: 1503 [2022-01-10 08:25:10,757 INFO L226 Difference]: Without dead ends: 762 [2022-01-10 08:25:10,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:10,758 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 773 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:10,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 1176 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:10,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-01-10 08:25:10,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 762. [2022-01-10 08:25:10,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 699 states have (on average 1.507868383404864) internal successors, (1054), 702 states have internal predecessors, (1054), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:25:10,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1151 transitions. [2022-01-10 08:25:10,786 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1151 transitions. Word has length 179 [2022-01-10 08:25:10,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:10,786 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1151 transitions. [2022-01-10 08:25:10,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:10,786 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1151 transitions. [2022-01-10 08:25:10,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:10,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:10,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:10,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:10,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:10,996 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:10,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:10,996 INFO L85 PathProgramCache]: Analyzing trace with hash 11587857, now seen corresponding path program 1 times [2022-01-10 08:25:10,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:10,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754545922] [2022-01-10 08:25:10,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:10,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:10,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:10,998 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:10,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 08:25:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:11,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:11,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:11,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:11,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:11,343 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:11,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754545922] [2022-01-10 08:25:11,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754545922] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:11,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:11,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:11,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349278152] [2022-01-10 08:25:11,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:11,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:11,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:11,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:11,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:11,344 INFO L87 Difference]: Start difference. First operand 762 states and 1151 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:11,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:11,670 INFO L93 Difference]: Finished difference Result 1503 states and 2275 transitions. [2022-01-10 08:25:11,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:11,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:11,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:11,672 INFO L225 Difference]: With dead ends: 1503 [2022-01-10 08:25:11,672 INFO L226 Difference]: Without dead ends: 762 [2022-01-10 08:25:11,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:11,674 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 767 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:11,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 1169 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:11,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-01-10 08:25:11,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 762. [2022-01-10 08:25:11,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 699 states have (on average 1.497854077253219) internal successors, (1047), 702 states have internal predecessors, (1047), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:25:11,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1144 transitions. [2022-01-10 08:25:11,705 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1144 transitions. Word has length 179 [2022-01-10 08:25:11,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:11,705 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1144 transitions. [2022-01-10 08:25:11,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:11,705 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1144 transitions. [2022-01-10 08:25:11,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:11,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:11,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:11,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-01-10 08:25:11,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:11,910 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:11,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:11,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1064561813, now seen corresponding path program 1 times [2022-01-10 08:25:11,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:11,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2023302908] [2022-01-10 08:25:11,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:11,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:11,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:11,912 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:11,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-01-10 08:25:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:12,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:12,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:12,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:12,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:12,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:12,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2023302908] [2022-01-10 08:25:12,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2023302908] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:12,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:12,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:12,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600752976] [2022-01-10 08:25:12,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:12,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:12,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:12,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:12,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:12,256 INFO L87 Difference]: Start difference. First operand 762 states and 1144 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:12,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:12,560 INFO L93 Difference]: Finished difference Result 1503 states and 2261 transitions. [2022-01-10 08:25:12,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:12,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:12,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:12,562 INFO L225 Difference]: With dead ends: 1503 [2022-01-10 08:25:12,562 INFO L226 Difference]: Without dead ends: 762 [2022-01-10 08:25:12,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:12,564 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 761 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:12,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [781 Valid, 1162 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:12,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-01-10 08:25:12,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 762. [2022-01-10 08:25:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 699 states have (on average 1.4878397711015736) internal successors, (1040), 702 states have internal predecessors, (1040), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:25:12,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1137 transitions. [2022-01-10 08:25:12,594 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1137 transitions. Word has length 179 [2022-01-10 08:25:12,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:12,594 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1137 transitions. [2022-01-10 08:25:12,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:12,594 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1137 transitions. [2022-01-10 08:25:12,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:12,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:12,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:12,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-01-10 08:25:12,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:12,796 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:12,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:12,796 INFO L85 PathProgramCache]: Analyzing trace with hash -841133935, now seen corresponding path program 1 times [2022-01-10 08:25:12,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:12,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401304489] [2022-01-10 08:25:12,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:12,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:12,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:12,798 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:12,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-01-10 08:25:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:12,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:12,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:13,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:13,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:13,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:13,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401304489] [2022-01-10 08:25:13,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401304489] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:13,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:13,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:13,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136865200] [2022-01-10 08:25:13,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:13,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:13,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:13,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:13,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:13,162 INFO L87 Difference]: Start difference. First operand 762 states and 1137 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:13,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:13,624 INFO L93 Difference]: Finished difference Result 1695 states and 2545 transitions. [2022-01-10 08:25:13,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:13,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:13,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:13,626 INFO L225 Difference]: With dead ends: 1695 [2022-01-10 08:25:13,626 INFO L226 Difference]: Without dead ends: 954 [2022-01-10 08:25:13,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:13,628 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 881 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:13,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [901 Valid, 1154 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:13,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2022-01-10 08:25:13,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 954. [2022-01-10 08:25:13,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 885 states have (on average 1.463276836158192) internal successors, (1295), 888 states have internal predecessors, (1295), 51 states have call successors, (51), 17 states have call predecessors, (51), 17 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:25:13,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1396 transitions. [2022-01-10 08:25:13,671 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1396 transitions. Word has length 179 [2022-01-10 08:25:13,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:13,671 INFO L470 AbstractCegarLoop]: Abstraction has 954 states and 1396 transitions. [2022-01-10 08:25:13,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:13,671 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1396 transitions. [2022-01-10 08:25:13,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:13,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:13,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:13,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:13,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:13,879 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:13,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:13,879 INFO L85 PathProgramCache]: Analyzing trace with hash -486965995, now seen corresponding path program 1 times [2022-01-10 08:25:13,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:13,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335012672] [2022-01-10 08:25:13,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:13,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:13,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:13,881 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:13,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-01-10 08:25:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:14,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:14,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:14,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:14,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:14,221 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:14,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335012672] [2022-01-10 08:25:14,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335012672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:14,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:14,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:14,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380146088] [2022-01-10 08:25:14,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:14,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:14,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:14,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:14,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:14,223 INFO L87 Difference]: Start difference. First operand 954 states and 1396 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:14,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:14,725 INFO L93 Difference]: Finished difference Result 2079 states and 3063 transitions. [2022-01-10 08:25:14,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:14,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:14,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:14,728 INFO L225 Difference]: With dead ends: 2079 [2022-01-10 08:25:14,728 INFO L226 Difference]: Without dead ends: 1146 [2022-01-10 08:25:14,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:14,730 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 874 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:14,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [894 Valid, 1148 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:14,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2022-01-10 08:25:14,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1146. [2022-01-10 08:25:14,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1071 states have (on average 1.4435107376283847) internal successors, (1546), 1074 states have internal predecessors, (1546), 53 states have call successors, (53), 21 states have call predecessors, (53), 21 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 08:25:14,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1651 transitions. [2022-01-10 08:25:14,786 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1651 transitions. Word has length 179 [2022-01-10 08:25:14,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:14,787 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 1651 transitions. [2022-01-10 08:25:14,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:14,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1651 transitions. [2022-01-10 08:25:14,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:14,788 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:14,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:14,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-01-10 08:25:14,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:14,989 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:14,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:14,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1980925008, now seen corresponding path program 1 times [2022-01-10 08:25:14,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:14,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184447377] [2022-01-10 08:25:14,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:14,990 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:14,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:14,991 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:14,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-01-10 08:25:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:15,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:15,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:15,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:15,345 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:15,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184447377] [2022-01-10 08:25:15,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184447377] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:15,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:15,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:15,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053479653] [2022-01-10 08:25:15,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:15,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:15,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:15,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:15,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:15,347 INFO L87 Difference]: Start difference. First operand 1146 states and 1651 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:15,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:15,819 INFO L93 Difference]: Finished difference Result 2463 states and 3573 transitions. [2022-01-10 08:25:15,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:15,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:15,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:15,822 INFO L225 Difference]: With dead ends: 2463 [2022-01-10 08:25:15,822 INFO L226 Difference]: Without dead ends: 1338 [2022-01-10 08:25:15,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:15,824 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 868 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:15,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [888 Valid, 1139 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:15,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2022-01-10 08:25:15,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1338. [2022-01-10 08:25:15,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1257 states have (on average 1.426412092283214) internal successors, (1793), 1260 states have internal predecessors, (1793), 55 states have call successors, (55), 25 states have call predecessors, (55), 25 states have return successors, (54), 53 states have call predecessors, (54), 53 states have call successors, (54) [2022-01-10 08:25:15,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1902 transitions. [2022-01-10 08:25:15,870 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1902 transitions. Word has length 179 [2022-01-10 08:25:15,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:15,871 INFO L470 AbstractCegarLoop]: Abstraction has 1338 states and 1902 transitions. [2022-01-10 08:25:15,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:15,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1902 transitions. [2022-01-10 08:25:15,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:15,871 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:15,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:15,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-01-10 08:25:16,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:16,072 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:16,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:16,072 INFO L85 PathProgramCache]: Analyzing trace with hash -2136905550, now seen corresponding path program 1 times [2022-01-10 08:25:16,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:16,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187402680] [2022-01-10 08:25:16,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:16,073 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:16,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:16,074 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:16,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-01-10 08:25:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:16,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:16,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:16,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:16,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:16,435 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:16,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187402680] [2022-01-10 08:25:16,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187402680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:16,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:16,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:16,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916202316] [2022-01-10 08:25:16,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:16,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:16,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:16,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:16,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:16,436 INFO L87 Difference]: Start difference. First operand 1338 states and 1902 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:16,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:16,884 INFO L93 Difference]: Finished difference Result 2847 states and 4075 transitions. [2022-01-10 08:25:16,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:16,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:16,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:16,887 INFO L225 Difference]: With dead ends: 2847 [2022-01-10 08:25:16,887 INFO L226 Difference]: Without dead ends: 1530 [2022-01-10 08:25:16,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:16,889 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 861 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:16,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 1132 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:16,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2022-01-10 08:25:16,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1530. [2022-01-10 08:25:16,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1443 states have (on average 1.410949410949411) internal successors, (2036), 1446 states have internal predecessors, (2036), 57 states have call successors, (57), 29 states have call predecessors, (57), 29 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2022-01-10 08:25:16,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 2149 transitions. [2022-01-10 08:25:16,949 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 2149 transitions. Word has length 179 [2022-01-10 08:25:16,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:16,949 INFO L470 AbstractCegarLoop]: Abstraction has 1530 states and 2149 transitions. [2022-01-10 08:25:16,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:16,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 2149 transitions. [2022-01-10 08:25:16,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:16,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:16,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:16,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-01-10 08:25:17,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:17,158 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:17,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:17,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2144545997, now seen corresponding path program 1 times [2022-01-10 08:25:17,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:17,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118707034] [2022-01-10 08:25:17,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:17,159 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:17,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:17,159 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:17,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-01-10 08:25:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:17,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:17,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:17,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:17,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:17,503 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:17,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118707034] [2022-01-10 08:25:17,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118707034] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:17,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:17,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:17,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851810171] [2022-01-10 08:25:17,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:17,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:17,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:17,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:17,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:17,505 INFO L87 Difference]: Start difference. First operand 1530 states and 2149 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:17,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:17,956 INFO L93 Difference]: Finished difference Result 3231 states and 4569 transitions. [2022-01-10 08:25:17,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:17,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:17,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:17,962 INFO L225 Difference]: With dead ends: 3231 [2022-01-10 08:25:17,962 INFO L226 Difference]: Without dead ends: 1722 [2022-01-10 08:25:17,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:17,964 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 853 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:17,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 1125 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:17,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2022-01-10 08:25:18,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1722. [2022-01-10 08:25:18,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1629 states have (on average 1.3965623081645182) internal successors, (2275), 1632 states have internal predecessors, (2275), 59 states have call successors, (59), 33 states have call predecessors, (59), 33 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2022-01-10 08:25:18,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2392 transitions. [2022-01-10 08:25:18,034 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2392 transitions. Word has length 179 [2022-01-10 08:25:18,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:18,034 INFO L470 AbstractCegarLoop]: Abstraction has 1722 states and 2392 transitions. [2022-01-10 08:25:18,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:18,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2392 transitions. [2022-01-10 08:25:18,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:18,035 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:18,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:18,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:18,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:18,242 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:18,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:18,243 INFO L85 PathProgramCache]: Analyzing trace with hash -500810295, now seen corresponding path program 1 times [2022-01-10 08:25:18,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:18,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110557450] [2022-01-10 08:25:18,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:18,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:18,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:18,244 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:18,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-01-10 08:25:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:18,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:18,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:18,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:18,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:18,591 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:18,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110557450] [2022-01-10 08:25:18,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110557450] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:18,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:18,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:18,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810850585] [2022-01-10 08:25:18,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:18,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:18,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:18,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:18,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:18,592 INFO L87 Difference]: Start difference. First operand 1722 states and 2392 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:19,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:19,035 INFO L93 Difference]: Finished difference Result 3615 states and 5055 transitions. [2022-01-10 08:25:19,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:19,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:19,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:19,038 INFO L225 Difference]: With dead ends: 3615 [2022-01-10 08:25:19,038 INFO L226 Difference]: Without dead ends: 1914 [2022-01-10 08:25:19,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:19,040 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 846 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:19,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [866 Valid, 1118 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:19,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2022-01-10 08:25:19,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1914. [2022-01-10 08:25:19,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1815 states have (on average 1.3829201101928374) internal successors, (2510), 1818 states have internal predecessors, (2510), 61 states have call successors, (61), 37 states have call predecessors, (61), 37 states have return successors, (60), 59 states have call predecessors, (60), 59 states have call successors, (60) [2022-01-10 08:25:19,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2631 transitions. [2022-01-10 08:25:19,115 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2631 transitions. Word has length 179 [2022-01-10 08:25:19,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:19,115 INFO L470 AbstractCegarLoop]: Abstraction has 1914 states and 2631 transitions. [2022-01-10 08:25:19,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:19,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2631 transitions. [2022-01-10 08:25:19,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:19,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:19,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:19,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-01-10 08:25:19,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:19,317 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:19,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:19,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1454618924, now seen corresponding path program 1 times [2022-01-10 08:25:19,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:19,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110355024] [2022-01-10 08:25:19,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:19,318 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:19,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:19,319 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:19,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-01-10 08:25:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:19,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:19,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:19,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:19,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:19,642 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:19,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110355024] [2022-01-10 08:25:19,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110355024] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:19,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:19,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:19,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897639650] [2022-01-10 08:25:19,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:19,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:19,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:19,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:19,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:19,643 INFO L87 Difference]: Start difference. First operand 1914 states and 2631 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:20,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:20,104 INFO L93 Difference]: Finished difference Result 3999 states and 5533 transitions. [2022-01-10 08:25:20,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:20,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:20,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:20,108 INFO L225 Difference]: With dead ends: 3999 [2022-01-10 08:25:20,108 INFO L226 Difference]: Without dead ends: 2106 [2022-01-10 08:25:20,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:20,111 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 839 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:20,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [859 Valid, 1111 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:20,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2022-01-10 08:25:20,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2106. [2022-01-10 08:25:20,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 2001 states have (on average 1.369815092453773) internal successors, (2741), 2004 states have internal predecessors, (2741), 63 states have call successors, (63), 41 states have call predecessors, (63), 41 states have return successors, (62), 61 states have call predecessors, (62), 61 states have call successors, (62) [2022-01-10 08:25:20,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 2866 transitions. [2022-01-10 08:25:20,204 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 2866 transitions. Word has length 179 [2022-01-10 08:25:20,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:20,204 INFO L470 AbstractCegarLoop]: Abstraction has 2106 states and 2866 transitions. [2022-01-10 08:25:20,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:20,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 2866 transitions. [2022-01-10 08:25:20,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:20,205 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:20,205 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:20,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:20,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:20,407 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:20,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:20,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1934547240, now seen corresponding path program 1 times [2022-01-10 08:25:20,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:20,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356877757] [2022-01-10 08:25:20,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:20,408 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:20,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:20,409 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:20,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-01-10 08:25:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:20,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:20,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:20,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:20,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:20,722 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:20,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356877757] [2022-01-10 08:25:20,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [356877757] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:20,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:20,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:20,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371346134] [2022-01-10 08:25:20,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:20,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:20,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:20,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:20,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:20,724 INFO L87 Difference]: Start difference. First operand 2106 states and 2866 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:21,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:21,225 INFO L93 Difference]: Finished difference Result 4383 states and 6003 transitions. [2022-01-10 08:25:21,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:21,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:21,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:21,229 INFO L225 Difference]: With dead ends: 4383 [2022-01-10 08:25:21,229 INFO L226 Difference]: Without dead ends: 2298 [2022-01-10 08:25:21,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:21,232 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 832 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:21,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 1104 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:21,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2022-01-10 08:25:21,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2298. [2022-01-10 08:25:21,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2187 states have (on average 1.3571101966163694) internal successors, (2968), 2190 states have internal predecessors, (2968), 65 states have call successors, (65), 45 states have call predecessors, (65), 45 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2022-01-10 08:25:21,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 3097 transitions. [2022-01-10 08:25:21,345 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 3097 transitions. Word has length 179 [2022-01-10 08:25:21,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:21,346 INFO L470 AbstractCegarLoop]: Abstraction has 2298 states and 3097 transitions. [2022-01-10 08:25:21,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:21,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 3097 transitions. [2022-01-10 08:25:21,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:21,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:21,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:21,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:21,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:21,547 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:21,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:21,547 INFO L85 PathProgramCache]: Analyzing trace with hash -2098070517, now seen corresponding path program 1 times [2022-01-10 08:25:21,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:21,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826591677] [2022-01-10 08:25:21,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:21,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:21,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:21,549 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:21,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-01-10 08:25:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:21,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:21,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:21,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:21,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:21,911 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:21,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826591677] [2022-01-10 08:25:21,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826591677] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:21,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:21,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:21,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573475437] [2022-01-10 08:25:21,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:21,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:21,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:21,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:21,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:21,912 INFO L87 Difference]: Start difference. First operand 2298 states and 3097 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:22,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:22,411 INFO L93 Difference]: Finished difference Result 4767 states and 6465 transitions. [2022-01-10 08:25:22,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:22,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:22,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:22,416 INFO L225 Difference]: With dead ends: 4767 [2022-01-10 08:25:22,416 INFO L226 Difference]: Without dead ends: 2490 [2022-01-10 08:25:22,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:22,419 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 825 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:22,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [845 Valid, 1097 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:22,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2022-01-10 08:25:22,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 2490. [2022-01-10 08:25:22,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2373 states have (on average 1.3447113358617784) internal successors, (3191), 2376 states have internal predecessors, (3191), 67 states have call successors, (67), 49 states have call predecessors, (67), 49 states have return successors, (66), 65 states have call predecessors, (66), 65 states have call successors, (66) [2022-01-10 08:25:22,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 3324 transitions. [2022-01-10 08:25:22,538 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 3324 transitions. Word has length 179 [2022-01-10 08:25:22,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:22,538 INFO L470 AbstractCegarLoop]: Abstraction has 2490 states and 3324 transitions. [2022-01-10 08:25:22,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:22,538 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 3324 transitions. [2022-01-10 08:25:22,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:22,539 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:22,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:22,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-01-10 08:25:22,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:22,739 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:22,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:22,740 INFO L85 PathProgramCache]: Analyzing trace with hash 445442823, now seen corresponding path program 1 times [2022-01-10 08:25:22,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:22,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468122787] [2022-01-10 08:25:22,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:22,741 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:22,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:22,768 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:22,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-01-10 08:25:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:22,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:22,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:23,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:23,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:23,173 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:23,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468122787] [2022-01-10 08:25:23,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468122787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:23,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:23,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:23,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159081690] [2022-01-10 08:25:23,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:23,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:23,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:23,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:23,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:23,175 INFO L87 Difference]: Start difference. First operand 2490 states and 3324 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:23,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:23,743 INFO L93 Difference]: Finished difference Result 5151 states and 6919 transitions. [2022-01-10 08:25:23,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:23,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:23,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:23,748 INFO L225 Difference]: With dead ends: 5151 [2022-01-10 08:25:23,748 INFO L226 Difference]: Without dead ends: 2682 [2022-01-10 08:25:23,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:23,751 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 818 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:23,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [838 Valid, 1090 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:23,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2022-01-10 08:25:23,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 2682. [2022-01-10 08:25:23,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2559 states have (on average 1.3325517780382963) internal successors, (3410), 2562 states have internal predecessors, (3410), 69 states have call successors, (69), 53 states have call predecessors, (69), 53 states have return successors, (68), 67 states have call predecessors, (68), 67 states have call successors, (68) [2022-01-10 08:25:23,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 3547 transitions. [2022-01-10 08:25:23,900 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 3547 transitions. Word has length 179 [2022-01-10 08:25:23,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:23,900 INFO L470 AbstractCegarLoop]: Abstraction has 2682 states and 3547 transitions. [2022-01-10 08:25:23,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:23,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 3547 transitions. [2022-01-10 08:25:23,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:23,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:23,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:23,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-01-10 08:25:24,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:24,103 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:24,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:24,104 INFO L85 PathProgramCache]: Analyzing trace with hash -369065240, now seen corresponding path program 1 times [2022-01-10 08:25:24,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:24,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303027914] [2022-01-10 08:25:24,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:24,104 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:24,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:24,105 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:24,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-01-10 08:25:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:24,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:24,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:24,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:24,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:24,454 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:24,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303027914] [2022-01-10 08:25:24,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303027914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:24,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:24,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:24,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861683086] [2022-01-10 08:25:24,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:24,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:24,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:24,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:24,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:24,455 INFO L87 Difference]: Start difference. First operand 2682 states and 3547 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:25,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:25,046 INFO L93 Difference]: Finished difference Result 5535 states and 7365 transitions. [2022-01-10 08:25:25,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:25,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:25,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:25,051 INFO L225 Difference]: With dead ends: 5535 [2022-01-10 08:25:25,051 INFO L226 Difference]: Without dead ends: 2874 [2022-01-10 08:25:25,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:25,054 INFO L933 BasicCegarLoop]: 509 mSDtfsCounter, 811 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:25,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 1083 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:25,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2022-01-10 08:25:25,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 2874. [2022-01-10 08:25:25,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2745 states have (on average 1.3205828779599271) internal successors, (3625), 2748 states have internal predecessors, (3625), 71 states have call successors, (71), 57 states have call predecessors, (71), 57 states have return successors, (70), 69 states have call predecessors, (70), 69 states have call successors, (70) [2022-01-10 08:25:25,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 3766 transitions. [2022-01-10 08:25:25,201 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 3766 transitions. Word has length 179 [2022-01-10 08:25:25,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:25,201 INFO L470 AbstractCegarLoop]: Abstraction has 2874 states and 3766 transitions. [2022-01-10 08:25:25,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:25,201 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 3766 transitions. [2022-01-10 08:25:25,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:25,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:25,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:25,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2022-01-10 08:25:25,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:25,406 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:25,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:25,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1767875325, now seen corresponding path program 1 times [2022-01-10 08:25:25,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:25,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533725135] [2022-01-10 08:25:25,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:25,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:25,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:25,408 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:25,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-01-10 08:25:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:25,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:25,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:25,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:25,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:25,717 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:25,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533725135] [2022-01-10 08:25:25,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533725135] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:25,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:25,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:25,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014627795] [2022-01-10 08:25:25,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:25,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:25,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:25,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:25,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:25,718 INFO L87 Difference]: Start difference. First operand 2874 states and 3766 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:25,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:25,937 INFO L93 Difference]: Finished difference Result 6076 states and 8006 transitions. [2022-01-10 08:25:25,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:25,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:25,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:25,951 INFO L225 Difference]: With dead ends: 6076 [2022-01-10 08:25:25,952 INFO L226 Difference]: Without dead ends: 3224 [2022-01-10 08:25:25,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:25,960 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 480 mSDsluCounter, 1797 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 2333 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:25,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 2333 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:25,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3224 states. [2022-01-10 08:25:26,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3224 to 2880. [2022-01-10 08:25:26,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2880 states, 2751 states have (on average 1.311886586695747) internal successors, (3609), 2754 states have internal predecessors, (3609), 71 states have call successors, (71), 57 states have call predecessors, (71), 57 states have return successors, (70), 69 states have call predecessors, (70), 69 states have call successors, (70) [2022-01-10 08:25:26,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3750 transitions. [2022-01-10 08:25:26,135 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3750 transitions. Word has length 179 [2022-01-10 08:25:26,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:26,136 INFO L470 AbstractCegarLoop]: Abstraction has 2880 states and 3750 transitions. [2022-01-10 08:25:26,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:26,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3750 transitions. [2022-01-10 08:25:26,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:26,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:26,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:26,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:26,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:26,337 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:26,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:26,338 INFO L85 PathProgramCache]: Analyzing trace with hash 476683073, now seen corresponding path program 1 times [2022-01-10 08:25:26,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:26,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363884383] [2022-01-10 08:25:26,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:26,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:26,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:26,339 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:26,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-01-10 08:25:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:26,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:26,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:26,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:26,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:26,668 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:26,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363884383] [2022-01-10 08:25:26,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363884383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:26,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:26,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:26,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119882081] [2022-01-10 08:25:26,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:26,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:26,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:26,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:26,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:26,674 INFO L87 Difference]: Start difference. First operand 2880 states and 3750 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:26,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:26,894 INFO L93 Difference]: Finished difference Result 6060 states and 7938 transitions. [2022-01-10 08:25:26,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:26,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:26,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:26,900 INFO L225 Difference]: With dead ends: 6060 [2022-01-10 08:25:26,900 INFO L226 Difference]: Without dead ends: 3202 [2022-01-10 08:25:26,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:26,905 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 441 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:26,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 2326 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:26,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3202 states. [2022-01-10 08:25:27,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3202 to 2886. [2022-01-10 08:25:27,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2757 states have (on average 1.30322814653609) internal successors, (3593), 2760 states have internal predecessors, (3593), 71 states have call successors, (71), 57 states have call predecessors, (71), 57 states have return successors, (70), 69 states have call predecessors, (70), 69 states have call successors, (70) [2022-01-10 08:25:27,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 3734 transitions. [2022-01-10 08:25:27,081 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 3734 transitions. Word has length 179 [2022-01-10 08:25:27,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:27,081 INFO L470 AbstractCegarLoop]: Abstraction has 2886 states and 3734 transitions. [2022-01-10 08:25:27,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:27,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 3734 transitions. [2022-01-10 08:25:27,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:27,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:27,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:27,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:27,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:27,282 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:27,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:27,283 INFO L85 PathProgramCache]: Analyzing trace with hash 144039935, now seen corresponding path program 1 times [2022-01-10 08:25:27,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:27,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691306084] [2022-01-10 08:25:27,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:27,283 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:27,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:27,284 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:27,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-01-10 08:25:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:27,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:27,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:27,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:27,610 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:27,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691306084] [2022-01-10 08:25:27,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691306084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:27,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:27,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:27,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181582634] [2022-01-10 08:25:27,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:27,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:27,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:27,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:27,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:27,611 INFO L87 Difference]: Start difference. First operand 2886 states and 3734 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:27,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:27,838 INFO L93 Difference]: Finished difference Result 6044 states and 7870 transitions. [2022-01-10 08:25:27,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:27,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:27,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:27,845 INFO L225 Difference]: With dead ends: 6044 [2022-01-10 08:25:27,846 INFO L226 Difference]: Without dead ends: 3180 [2022-01-10 08:25:27,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:27,851 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 402 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:27,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 2303 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:27,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3180 states. [2022-01-10 08:25:28,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3180 to 2892. [2022-01-10 08:25:28,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2763 states have (on average 1.2946073108939558) internal successors, (3577), 2766 states have internal predecessors, (3577), 71 states have call successors, (71), 57 states have call predecessors, (71), 57 states have return successors, (70), 69 states have call predecessors, (70), 69 states have call successors, (70) [2022-01-10 08:25:28,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 3718 transitions. [2022-01-10 08:25:28,042 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 3718 transitions. Word has length 179 [2022-01-10 08:25:28,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:28,042 INFO L470 AbstractCegarLoop]: Abstraction has 2892 states and 3718 transitions. [2022-01-10 08:25:28,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:28,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 3718 transitions. [2022-01-10 08:25:28,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:28,047 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:28,048 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:28,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:28,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:28,251 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:28,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:28,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1987310787, now seen corresponding path program 1 times [2022-01-10 08:25:28,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:28,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504186756] [2022-01-10 08:25:28,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:28,252 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:28,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:28,253 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:28,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-01-10 08:25:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:28,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:28,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:28,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:28,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:28,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:28,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504186756] [2022-01-10 08:25:28,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504186756] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:28,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:28,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:28,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375340224] [2022-01-10 08:25:28,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:28,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:28,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:28,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:28,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:28,566 INFO L87 Difference]: Start difference. First operand 2892 states and 3718 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:28,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:28,840 INFO L93 Difference]: Finished difference Result 6028 states and 7802 transitions. [2022-01-10 08:25:28,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:28,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:28,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:28,847 INFO L225 Difference]: With dead ends: 6028 [2022-01-10 08:25:28,847 INFO L226 Difference]: Without dead ends: 3158 [2022-01-10 08:25:28,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:28,851 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 363 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:28,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 2288 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:28,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3158 states. [2022-01-10 08:25:29,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3158 to 2898. [2022-01-10 08:25:29,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2898 states, 2769 states have (on average 1.28602383531961) internal successors, (3561), 2772 states have internal predecessors, (3561), 71 states have call successors, (71), 57 states have call predecessors, (71), 57 states have return successors, (70), 69 states have call predecessors, (70), 69 states have call successors, (70) [2022-01-10 08:25:29,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2898 states to 2898 states and 3702 transitions. [2022-01-10 08:25:29,052 INFO L78 Accepts]: Start accepts. Automaton has 2898 states and 3702 transitions. Word has length 179 [2022-01-10 08:25:29,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:29,052 INFO L470 AbstractCegarLoop]: Abstraction has 2898 states and 3702 transitions. [2022-01-10 08:25:29,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:29,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2898 states and 3702 transitions. [2022-01-10 08:25:29,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:29,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:29,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:29,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-01-10 08:25:29,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:29,262 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:29,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:29,262 INFO L85 PathProgramCache]: Analyzing trace with hash -598016773, now seen corresponding path program 1 times [2022-01-10 08:25:29,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:29,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330196429] [2022-01-10 08:25:29,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:29,263 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:29,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:29,264 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:29,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-01-10 08:25:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:29,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:25:29,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:29,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:29,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:29,589 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:29,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330196429] [2022-01-10 08:25:29,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330196429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:29,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:29,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:25:29,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915370173] [2022-01-10 08:25:29,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:29,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:25:29,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:29,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:25:29,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:25:29,591 INFO L87 Difference]: Start difference. First operand 2898 states and 3702 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:29,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:29,962 INFO L93 Difference]: Finished difference Result 8425 states and 10784 transitions. [2022-01-10 08:25:29,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:25:29,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:29,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:29,972 INFO L225 Difference]: With dead ends: 8425 [2022-01-10 08:25:29,972 INFO L226 Difference]: Without dead ends: 5549 [2022-01-10 08:25:29,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:25:29,977 INFO L933 BasicCegarLoop]: 613 mSDtfsCounter, 449 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:29,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 1107 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:29,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5549 states. [2022-01-10 08:25:30,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5549 to 5541. [2022-01-10 08:25:30,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5541 states, 5298 states have (on average 1.278406946017365) internal successors, (6773), 5302 states have internal predecessors, (6773), 132 states have call successors, (132), 109 states have call predecessors, (132), 110 states have return successors, (132), 130 states have call predecessors, (132), 130 states have call successors, (132) [2022-01-10 08:25:30,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5541 states to 5541 states and 7037 transitions. [2022-01-10 08:25:30,360 INFO L78 Accepts]: Start accepts. Automaton has 5541 states and 7037 transitions. Word has length 179 [2022-01-10 08:25:30,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:30,360 INFO L470 AbstractCegarLoop]: Abstraction has 5541 states and 7037 transitions. [2022-01-10 08:25:30,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:30,360 INFO L276 IsEmpty]: Start isEmpty. Operand 5541 states and 7037 transitions. [2022-01-10 08:25:30,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:30,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:30,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:30,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2022-01-10 08:25:30,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:30,561 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:30,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:30,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1831977562, now seen corresponding path program 1 times [2022-01-10 08:25:30,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:30,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069535914] [2022-01-10 08:25:30,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:30,562 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:30,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:30,563 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:30,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-01-10 08:25:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:30,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:30,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:30,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:30,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:30,854 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:30,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069535914] [2022-01-10 08:25:30,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069535914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:30,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:30,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:30,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814434325] [2022-01-10 08:25:30,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:30,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:30,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:30,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:30,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:30,855 INFO L87 Difference]: Start difference. First operand 5541 states and 7037 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:31,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:31,537 INFO L93 Difference]: Finished difference Result 13916 states and 17871 transitions. [2022-01-10 08:25:31,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:31,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:31,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:31,549 INFO L225 Difference]: With dead ends: 13916 [2022-01-10 08:25:31,549 INFO L226 Difference]: Without dead ends: 8397 [2022-01-10 08:25:31,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:31,557 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 329 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:31,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 2321 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:31,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8397 states. [2022-01-10 08:25:32,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8397 to 5613. [2022-01-10 08:25:32,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5613 states, 5370 states have (on average 1.2705772811918064) internal successors, (6823), 5374 states have internal predecessors, (6823), 132 states have call successors, (132), 109 states have call predecessors, (132), 110 states have return successors, (132), 130 states have call predecessors, (132), 130 states have call successors, (132) [2022-01-10 08:25:32,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5613 states to 5613 states and 7087 transitions. [2022-01-10 08:25:32,010 INFO L78 Accepts]: Start accepts. Automaton has 5613 states and 7087 transitions. Word has length 179 [2022-01-10 08:25:32,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:32,010 INFO L470 AbstractCegarLoop]: Abstraction has 5613 states and 7087 transitions. [2022-01-10 08:25:32,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:32,010 INFO L276 IsEmpty]: Start isEmpty. Operand 5613 states and 7087 transitions. [2022-01-10 08:25:32,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:32,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:32,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:32,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:32,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:32,211 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:32,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:32,212 INFO L85 PathProgramCache]: Analyzing trace with hash -74425704, now seen corresponding path program 1 times [2022-01-10 08:25:32,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:32,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241742932] [2022-01-10 08:25:32,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:32,212 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:32,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:32,213 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:32,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-01-10 08:25:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:32,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:32,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:32,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:32,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:32,495 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:32,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241742932] [2022-01-10 08:25:32,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241742932] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:32,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:32,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:32,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581836582] [2022-01-10 08:25:32,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:32,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:32,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:32,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:32,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:32,496 INFO L87 Difference]: Start difference. First operand 5613 states and 7087 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:32,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:32,974 INFO L93 Difference]: Finished difference Result 11568 states and 14713 transitions. [2022-01-10 08:25:32,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:32,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:32,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:32,984 INFO L225 Difference]: With dead ends: 11568 [2022-01-10 08:25:32,984 INFO L226 Difference]: Without dead ends: 5977 [2022-01-10 08:25:32,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:32,992 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 245 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 2238 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:32,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 2238 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:32,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5977 states. [2022-01-10 08:25:33,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5977 to 5625. [2022-01-10 08:25:33,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5625 states, 5382 states have (on average 1.2621701969528056) internal successors, (6793), 5386 states have internal predecessors, (6793), 132 states have call successors, (132), 109 states have call predecessors, (132), 110 states have return successors, (132), 130 states have call predecessors, (132), 130 states have call successors, (132) [2022-01-10 08:25:33,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5625 states to 5625 states and 7057 transitions. [2022-01-10 08:25:33,446 INFO L78 Accepts]: Start accepts. Automaton has 5625 states and 7057 transitions. Word has length 179 [2022-01-10 08:25:33,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:33,447 INFO L470 AbstractCegarLoop]: Abstraction has 5625 states and 7057 transitions. [2022-01-10 08:25:33,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:33,447 INFO L276 IsEmpty]: Start isEmpty. Operand 5625 states and 7057 transitions. [2022-01-10 08:25:33,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:33,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:33,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:33,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Ended with exit code 0 [2022-01-10 08:25:33,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:33,648 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:33,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:33,648 INFO L85 PathProgramCache]: Analyzing trace with hash -2033000490, now seen corresponding path program 1 times [2022-01-10 08:25:33,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:33,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246227429] [2022-01-10 08:25:33,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:33,649 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:33,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:33,650 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:33,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-01-10 08:25:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:33,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:33,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:33,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:33,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:33,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246227429] [2022-01-10 08:25:33,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246227429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:33,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:33,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:33,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681815765] [2022-01-10 08:25:33,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:33,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:33,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:33,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:33,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:33,955 INFO L87 Difference]: Start difference. First operand 5625 states and 7057 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:34,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:34,503 INFO L93 Difference]: Finished difference Result 11536 states and 14581 transitions. [2022-01-10 08:25:34,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:34,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:34,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:34,513 INFO L225 Difference]: With dead ends: 11536 [2022-01-10 08:25:34,513 INFO L226 Difference]: Without dead ends: 5933 [2022-01-10 08:25:34,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:34,519 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 206 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:34,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 2223 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:34,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5933 states. [2022-01-10 08:25:34,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5933 to 5637. [2022-01-10 08:25:34,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5637 states, 5394 states have (on average 1.253800519095291) internal successors, (6763), 5398 states have internal predecessors, (6763), 132 states have call successors, (132), 109 states have call predecessors, (132), 110 states have return successors, (132), 130 states have call predecessors, (132), 130 states have call successors, (132) [2022-01-10 08:25:34,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5637 states to 5637 states and 7027 transitions. [2022-01-10 08:25:34,986 INFO L78 Accepts]: Start accepts. Automaton has 5637 states and 7027 transitions. Word has length 179 [2022-01-10 08:25:34,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:34,986 INFO L470 AbstractCegarLoop]: Abstraction has 5637 states and 7027 transitions. [2022-01-10 08:25:34,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:34,986 INFO L276 IsEmpty]: Start isEmpty. Operand 5637 states and 7027 transitions. [2022-01-10 08:25:34,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:34,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:34,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:34,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2022-01-10 08:25:35,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:35,191 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:35,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:35,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1119464340, now seen corresponding path program 1 times [2022-01-10 08:25:35,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:35,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078382210] [2022-01-10 08:25:35,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:35,192 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:35,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:35,193 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:35,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-01-10 08:25:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:35,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:35,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:35,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:35,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:35,502 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:35,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078382210] [2022-01-10 08:25:35,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078382210] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:35,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:35,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:35,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48292746] [2022-01-10 08:25:35,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:35,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:35,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:35,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:35,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:35,504 INFO L87 Difference]: Start difference. First operand 5637 states and 7027 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:35,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:35,998 INFO L93 Difference]: Finished difference Result 11504 states and 14449 transitions. [2022-01-10 08:25:35,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:35,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:35,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:36,012 INFO L225 Difference]: With dead ends: 11504 [2022-01-10 08:25:36,012 INFO L226 Difference]: Without dead ends: 5889 [2022-01-10 08:25:36,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:36,019 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 167 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 2208 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:36,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 2208 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:36,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5889 states. [2022-01-10 08:25:36,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5889 to 5649. [2022-01-10 08:25:36,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5649 states, 5406 states have (on average 1.2454679985201629) internal successors, (6733), 5410 states have internal predecessors, (6733), 132 states have call successors, (132), 109 states have call predecessors, (132), 110 states have return successors, (132), 130 states have call predecessors, (132), 130 states have call successors, (132) [2022-01-10 08:25:36,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5649 states to 5649 states and 6997 transitions. [2022-01-10 08:25:36,515 INFO L78 Accepts]: Start accepts. Automaton has 5649 states and 6997 transitions. Word has length 179 [2022-01-10 08:25:36,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:36,515 INFO L470 AbstractCegarLoop]: Abstraction has 5649 states and 6997 transitions. [2022-01-10 08:25:36,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:36,516 INFO L276 IsEmpty]: Start isEmpty. Operand 5649 states and 6997 transitions. [2022-01-10 08:25:36,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:36,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:36,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:36,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:36,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:36,717 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:36,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:36,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2006687186, now seen corresponding path program 1 times [2022-01-10 08:25:36,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:36,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268453378] [2022-01-10 08:25:36,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:36,718 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:36,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:36,719 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:36,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-01-10 08:25:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:36,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:36,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:37,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:37,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:37,026 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:37,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268453378] [2022-01-10 08:25:37,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268453378] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:37,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:37,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:37,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463356551] [2022-01-10 08:25:37,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:37,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:37,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:37,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:37,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:37,028 INFO L87 Difference]: Start difference. First operand 5649 states and 6997 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:37,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:37,520 INFO L93 Difference]: Finished difference Result 11472 states and 14317 transitions. [2022-01-10 08:25:37,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:37,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:37,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:37,534 INFO L225 Difference]: With dead ends: 11472 [2022-01-10 08:25:37,535 INFO L226 Difference]: Without dead ends: 5845 [2022-01-10 08:25:37,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:37,543 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 128 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:37,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 2193 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:37,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5845 states. [2022-01-10 08:25:37,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5845 to 5661. [2022-01-10 08:25:38,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5661 states, 5418 states have (on average 1.237172388335179) internal successors, (6703), 5422 states have internal predecessors, (6703), 132 states have call successors, (132), 109 states have call predecessors, (132), 110 states have return successors, (132), 130 states have call predecessors, (132), 130 states have call successors, (132) [2022-01-10 08:25:38,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5661 states to 5661 states and 6967 transitions. [2022-01-10 08:25:38,006 INFO L78 Accepts]: Start accepts. Automaton has 5661 states and 6967 transitions. Word has length 179 [2022-01-10 08:25:38,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:38,006 INFO L470 AbstractCegarLoop]: Abstraction has 5661 states and 6967 transitions. [2022-01-10 08:25:38,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:38,006 INFO L276 IsEmpty]: Start isEmpty. Operand 5661 states and 6967 transitions. [2022-01-10 08:25:38,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:38,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:38,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:38,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2022-01-10 08:25:38,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:38,207 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:38,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:38,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1334339952, now seen corresponding path program 1 times [2022-01-10 08:25:38,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:38,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108406620] [2022-01-10 08:25:38,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:38,208 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:38,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:38,209 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:38,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-01-10 08:25:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:38,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:38,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:38,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:38,487 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:38,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108406620] [2022-01-10 08:25:38,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108406620] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:38,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:38,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:38,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672045736] [2022-01-10 08:25:38,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:38,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:38,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:38,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:38,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:38,488 INFO L87 Difference]: Start difference. First operand 5661 states and 6967 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:38,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:38,965 INFO L93 Difference]: Finished difference Result 11440 states and 14185 transitions. [2022-01-10 08:25:38,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:38,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:38,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:39,016 INFO L225 Difference]: With dead ends: 11440 [2022-01-10 08:25:39,016 INFO L226 Difference]: Without dead ends: 5801 [2022-01-10 08:25:39,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:39,021 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 89 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:39,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 2178 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:39,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2022-01-10 08:25:39,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 5673. [2022-01-10 08:25:39,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5673 states, 5430 states have (on average 1.2289134438305709) internal successors, (6673), 5434 states have internal predecessors, (6673), 132 states have call successors, (132), 109 states have call predecessors, (132), 110 states have return successors, (132), 130 states have call predecessors, (132), 130 states have call successors, (132) [2022-01-10 08:25:39,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5673 states to 5673 states and 6937 transitions. [2022-01-10 08:25:39,491 INFO L78 Accepts]: Start accepts. Automaton has 5673 states and 6937 transitions. Word has length 179 [2022-01-10 08:25:39,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:39,492 INFO L470 AbstractCegarLoop]: Abstraction has 5673 states and 6937 transitions. [2022-01-10 08:25:39,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:39,492 INFO L276 IsEmpty]: Start isEmpty. Operand 5673 states and 6937 transitions. [2022-01-10 08:25:39,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:39,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:39,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:39,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0 [2022-01-10 08:25:39,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:39,693 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:39,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:39,693 INFO L85 PathProgramCache]: Analyzing trace with hash -655067698, now seen corresponding path program 1 times [2022-01-10 08:25:39,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:39,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112340489] [2022-01-10 08:25:39,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:39,694 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:39,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:39,695 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:39,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-01-10 08:25:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:39,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:39,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:39,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:39,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:39,966 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:39,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112340489] [2022-01-10 08:25:39,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112340489] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:39,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:39,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:39,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406787541] [2022-01-10 08:25:39,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:39,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:39,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:39,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:39,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:39,968 INFO L87 Difference]: Start difference. First operand 5673 states and 6937 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:40,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:40,471 INFO L93 Difference]: Finished difference Result 11408 states and 14053 transitions. [2022-01-10 08:25:40,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:40,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:40,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:40,480 INFO L225 Difference]: With dead ends: 11408 [2022-01-10 08:25:40,480 INFO L226 Difference]: Without dead ends: 5757 [2022-01-10 08:25:40,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:40,486 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 50 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:40,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 2163 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:40,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5757 states. [2022-01-10 08:25:40,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5757 to 5685. [2022-01-10 08:25:40,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5685 states, 5442 states have (on average 1.2206909224549798) internal successors, (6643), 5446 states have internal predecessors, (6643), 132 states have call successors, (132), 109 states have call predecessors, (132), 110 states have return successors, (132), 130 states have call predecessors, (132), 130 states have call successors, (132) [2022-01-10 08:25:40,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 6907 transitions. [2022-01-10 08:25:40,945 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 6907 transitions. Word has length 179 [2022-01-10 08:25:40,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:40,945 INFO L470 AbstractCegarLoop]: Abstraction has 5685 states and 6907 transitions. [2022-01-10 08:25:40,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:40,945 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 6907 transitions. [2022-01-10 08:25:40,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:40,946 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:40,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:40,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2022-01-10 08:25:41,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:41,147 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:41,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:41,147 INFO L85 PathProgramCache]: Analyzing trace with hash -614392948, now seen corresponding path program 1 times [2022-01-10 08:25:41,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:41,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278111127] [2022-01-10 08:25:41,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:41,147 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:41,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:41,148 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:41,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-01-10 08:25:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:41,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:25:41,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:41,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:41,489 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:41,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278111127] [2022-01-10 08:25:41,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278111127] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:41,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:41,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:41,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132345042] [2022-01-10 08:25:41,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:41,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:41,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:41,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:41,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:41,490 INFO L87 Difference]: Start difference. First operand 5685 states and 6907 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:42,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:42,295 INFO L93 Difference]: Finished difference Result 11349 states and 13792 transitions. [2022-01-10 08:25:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:42,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:42,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:42,305 INFO L225 Difference]: With dead ends: 11349 [2022-01-10 08:25:42,305 INFO L226 Difference]: Without dead ends: 5685 [2022-01-10 08:25:42,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:42,310 INFO L933 BasicCegarLoop]: 507 mSDtfsCounter, 605 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:42,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 1078 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:42,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5685 states. [2022-01-10 08:25:42,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5685 to 5685. [2022-01-10 08:25:42,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5685 states, 5442 states have (on average 1.2181183388460124) internal successors, (6629), 5446 states have internal predecessors, (6629), 132 states have call successors, (132), 109 states have call predecessors, (132), 110 states have return successors, (132), 130 states have call predecessors, (132), 130 states have call successors, (132) [2022-01-10 08:25:42,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 6893 transitions. [2022-01-10 08:25:42,789 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 6893 transitions. Word has length 179 [2022-01-10 08:25:42,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:42,789 INFO L470 AbstractCegarLoop]: Abstraction has 5685 states and 6893 transitions. [2022-01-10 08:25:42,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:42,789 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 6893 transitions. [2022-01-10 08:25:42,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:42,789 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:42,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:42,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2022-01-10 08:25:42,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:42,997 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:42,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:42,997 INFO L85 PathProgramCache]: Analyzing trace with hash 279093390, now seen corresponding path program 1 times [2022-01-10 08:25:42,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:42,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280540087] [2022-01-10 08:25:42,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:42,998 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:42,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:42,999 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:42,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-01-10 08:25:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:43,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:25:43,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:43,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:43,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:43,357 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:43,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280540087] [2022-01-10 08:25:43,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280540087] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:43,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:43,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:43,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310890370] [2022-01-10 08:25:43,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:43,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:43,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:43,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:43,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:43,358 INFO L87 Difference]: Start difference. First operand 5685 states and 6893 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:44,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:44,112 INFO L93 Difference]: Finished difference Result 11349 states and 13764 transitions. [2022-01-10 08:25:44,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:44,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:44,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:44,122 INFO L225 Difference]: With dead ends: 11349 [2022-01-10 08:25:44,122 INFO L226 Difference]: Without dead ends: 5685 [2022-01-10 08:25:44,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:25:44,129 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 592 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:44,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 1071 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:25:44,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5685 states. [2022-01-10 08:25:44,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5685 to 5685. [2022-01-10 08:25:44,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5685 states, 5442 states have (on average 1.2155457552370452) internal successors, (6615), 5446 states have internal predecessors, (6615), 132 states have call successors, (132), 109 states have call predecessors, (132), 110 states have return successors, (132), 130 states have call predecessors, (132), 130 states have call successors, (132) [2022-01-10 08:25:44,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 6879 transitions. [2022-01-10 08:25:44,684 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 6879 transitions. Word has length 179 [2022-01-10 08:25:44,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:44,684 INFO L470 AbstractCegarLoop]: Abstraction has 5685 states and 6879 transitions. [2022-01-10 08:25:44,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:44,684 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 6879 transitions. [2022-01-10 08:25:44,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:25:44,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:44,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:44,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2022-01-10 08:25:44,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:44,886 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:44,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:44,886 INFO L85 PathProgramCache]: Analyzing trace with hash 938624912, now seen corresponding path program 1 times [2022-01-10 08:25:44,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:44,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249456007] [2022-01-10 08:25:44,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:44,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:44,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:44,887 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:44,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-01-10 08:25:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:44,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:25:44,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:45,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:45,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:45,231 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:45,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249456007] [2022-01-10 08:25:45,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249456007] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:45,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:45,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:45,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297965575] [2022-01-10 08:25:45,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:45,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:45,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:45,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:45,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:45,232 INFO L87 Difference]: Start difference. First operand 5685 states and 6879 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:46,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:46,186 INFO L93 Difference]: Finished difference Result 11785 states and 14283 transitions. [2022-01-10 08:25:46,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:46,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:25:46,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:46,198 INFO L225 Difference]: With dead ends: 11785 [2022-01-10 08:25:46,198 INFO L226 Difference]: Without dead ends: 6121 [2022-01-10 08:25:46,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:46,205 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 756 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:46,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 1135 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:46,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6121 states.