/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.13.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:24:34,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:24:34,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:24:34,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 08:24:34,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 08:24:34,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 08:24:34,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 08:24:34,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 08:24:34,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 08:24:34,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 08:24:34,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 08:24:34,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 08:24:34,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:24:34,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:24:34,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:24:34,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:24:34,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:24:34,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:24:34,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:24:34,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:24:34,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:24:34,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:24:34,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:24:34,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:24:34,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 08:24:34,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 08:24:34,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 08:24:34,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 08:24:34,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 08:24:34,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 08:24:34,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 08:24:34,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 08:24:34,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 08:24:34,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 08:24:34,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 08:24:34,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 08:24:34,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 08:24:34,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 08:24:34,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:24:34,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:24:34,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:24:34,405 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 08:24:34,428 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:24:34,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:24:34,429 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:24:34,429 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:24:34,430 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 08:24:34,430 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 08:24:34,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:24:34,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:24:34,430 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:24:34,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:24:34,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:24:34,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:24:34,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:24:34,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:24:34,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:24:34,432 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:24:34,432 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:24:34,432 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:24:34,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:24:34,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:24:34,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:24:34,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:24:34,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:24:34,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:24:34,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:24:34,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:24:34,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:24:34,433 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 08:24:34,433 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 08:24:34,433 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:24:34,433 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:24:34,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:24:34,433 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:24:34,433 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:24:34,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:24:34,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:24:34,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:24:34,625 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:24:34,625 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:24:34,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.13.cil-2.c [2022-01-10 08:24:34,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31a6d59cc/c4c76a0784134addb25208de77c5df0c/FLAG9c3ef8c57 [2022-01-10 08:24:35,086 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:24:35,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.13.cil-2.c [2022-01-10 08:24:35,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31a6d59cc/c4c76a0784134addb25208de77c5df0c/FLAG9c3ef8c57 [2022-01-10 08:24:35,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31a6d59cc/c4c76a0784134addb25208de77c5df0c [2022-01-10 08:24:35,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:24:35,485 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 08:24:35,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:24:35,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:24:35,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:24:35,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:24:35" (1/1) ... [2022-01-10 08:24:35,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f685ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:35, skipping insertion in model container [2022-01-10 08:24:35,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:24:35" (1/1) ... [2022-01-10 08:24:35,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:24:35,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:24:35,650 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.13.cil-2.c[911,924] [2022-01-10 08:24:35,740 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.13.cil-2.c[8416,8429] [2022-01-10 08:24:35,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:24:35,830 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:24:35,838 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.13.cil-2.c[911,924] [2022-01-10 08:24:35,856 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.13.cil-2.c[8416,8429] [2022-01-10 08:24:35,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:24:35,947 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:24:35,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:35 WrapperNode [2022-01-10 08:24:35,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:24:35,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:24:35,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:24:35,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:24:35,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:35" (1/1) ... [2022-01-10 08:24:35,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:35" (1/1) ... [2022-01-10 08:24:36,021 INFO L137 Inliner]: procedures = 82, calls = 100, calls flagged for inlining = 50, calls inlined = 50, statements flattened = 1094 [2022-01-10 08:24:36,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:24:36,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:24:36,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:24:36,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:24:36,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:35" (1/1) ... [2022-01-10 08:24:36,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:35" (1/1) ... [2022-01-10 08:24:36,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:35" (1/1) ... [2022-01-10 08:24:36,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:35" (1/1) ... [2022-01-10 08:24:36,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:35" (1/1) ... [2022-01-10 08:24:36,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:35" (1/1) ... [2022-01-10 08:24:36,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:35" (1/1) ... [2022-01-10 08:24:36,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:24:36,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:24:36,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:24:36,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:24:36,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:35" (1/1) ... [2022-01-10 08:24:36,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:24:36,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:24:36,163 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 08:24:36,167 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 08:24:36,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:24:36,192 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 08:24:36,192 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 08:24:36,192 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-01-10 08:24:36,192 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-01-10 08:24:36,192 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-01-10 08:24:36,192 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-01-10 08:24:36,192 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-01-10 08:24:36,192 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-01-10 08:24:36,192 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-01-10 08:24:36,192 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-01-10 08:24:36,192 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-01-10 08:24:36,193 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-01-10 08:24:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-01-10 08:24:36,193 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-01-10 08:24:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-01-10 08:24:36,193 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-01-10 08:24:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:24:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-01-10 08:24:36,193 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-01-10 08:24:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-01-10 08:24:36,193 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-01-10 08:24:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-01-10 08:24:36,193 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-01-10 08:24:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-01-10 08:24:36,194 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-01-10 08:24:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-01-10 08:24:36,194 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-01-10 08:24:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:24:36,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:24:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-01-10 08:24:36,194 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-01-10 08:24:36,309 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:24:36,310 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:24:36,970 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1bv32 == ~q_free~0); [2022-01-10 08:24:36,970 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 08:24:37,047 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:24:37,062 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:24:37,063 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2022-01-10 08:24:37,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:24:37 BoogieIcfgContainer [2022-01-10 08:24:37,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:24:37,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:24:37,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:24:37,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:24:37,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:24:35" (1/3) ... [2022-01-10 08:24:37,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b297435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:24:37, skipping insertion in model container [2022-01-10 08:24:37,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:35" (2/3) ... [2022-01-10 08:24:37,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b297435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:24:37, skipping insertion in model container [2022-01-10 08:24:37,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:24:37" (3/3) ... [2022-01-10 08:24:37,074 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.13.cil-2.c [2022-01-10 08:24:37,078 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:24:37,079 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 08:24:37,120 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:24:37,125 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 08:24:37,125 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 08:24:37,148 INFO L276 IsEmpty]: Start isEmpty. Operand has 524 states, 464 states have (on average 1.6422413793103448) internal successors, (762), 470 states have internal predecessors, (762), 43 states have call successors, (43), 14 states have call predecessors, (43), 14 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-10 08:24:37,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:24:37,155 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:37,156 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 08:24:37,156 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:37,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:37,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1273219449, now seen corresponding path program 1 times [2022-01-10 08:24:37,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:37,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355111962] [2022-01-10 08:24:37,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:37,170 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:37,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:37,172 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 08:24:37,176 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 08:24:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:37,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 08:24:37,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:37,497 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 08:24:37,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:37,498 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:37,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355111962] [2022-01-10 08:24:37,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355111962] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:37,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:37,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:24:37,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406261910] [2022-01-10 08:24:37,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:37,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:37,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:37,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:37,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:37,542 INFO L87 Difference]: Start difference. First operand has 524 states, 464 states have (on average 1.6422413793103448) internal successors, (762), 470 states have internal predecessors, (762), 43 states have call successors, (43), 14 states have call predecessors, (43), 14 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) 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 08:24:38,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:38,422 INFO L93 Difference]: Finished difference Result 1138 states and 1833 transitions. [2022-01-10 08:24:38,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:24:38,425 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 08:24:38,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:38,435 INFO L225 Difference]: With dead ends: 1138 [2022-01-10 08:24:38,435 INFO L226 Difference]: Without dead ends: 633 [2022-01-10 08:24:38,440 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 08:24:38,442 INFO L933 BasicCegarLoop]: 832 mSDtfsCounter, 537 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:38,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [546 Valid, 2090 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 08:24:38,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-01-10 08:24:38,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 626. [2022-01-10 08:24:38,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 546 states have (on average 1.532967032967033) internal successors, (837), 552 states have internal predecessors, (837), 56 states have call successors, (56), 21 states have call predecessors, (56), 22 states have return successors, (59), 55 states have call predecessors, (59), 54 states have call successors, (59) [2022-01-10 08:24:38,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 952 transitions. [2022-01-10 08:24:38,510 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 952 transitions. Word has length 65 [2022-01-10 08:24:38,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:38,511 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 952 transitions. [2022-01-10 08:24:38,511 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 08:24:38,511 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 952 transitions. [2022-01-10 08:24:38,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:24:38,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:38,514 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 08:24:38,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 08:24:38,721 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 08:24:38,722 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:38,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:38,725 INFO L85 PathProgramCache]: Analyzing trace with hash 265120581, now seen corresponding path program 1 times [2022-01-10 08:24:38,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:38,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863270010] [2022-01-10 08:24:38,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:38,727 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:38,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:38,728 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 08:24:38,746 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 08:24:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:38,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:38,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:38,947 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 08:24:38,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:38,951 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:38,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863270010] [2022-01-10 08:24:38,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1863270010] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:38,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:38,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:38,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534072781] [2022-01-10 08:24:38,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:38,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:38,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:38,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:38,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:38,959 INFO L87 Difference]: Start difference. First operand 626 states and 952 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 08:24:39,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:39,008 INFO L93 Difference]: Finished difference Result 1028 states and 1512 transitions. [2022-01-10 08:24:39,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:39,009 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 08:24:39,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:39,014 INFO L225 Difference]: With dead ends: 1028 [2022-01-10 08:24:39,014 INFO L226 Difference]: Without dead ends: 819 [2022-01-10 08:24:39,015 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 08:24:39,016 INFO L933 BasicCegarLoop]: 825 mSDtfsCounter, 758 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 954 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 08:24:39,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 954 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:39,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-01-10 08:24:39,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 811. [2022-01-10 08:24:39,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 695 states have (on average 1.5007194244604316) internal successors, (1043), 703 states have internal predecessors, (1043), 76 states have call successors, (76), 35 states have call predecessors, (76), 38 states have return successors, (82), 75 states have call predecessors, (82), 74 states have call successors, (82) [2022-01-10 08:24:39,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1201 transitions. [2022-01-10 08:24:39,055 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1201 transitions. Word has length 65 [2022-01-10 08:24:39,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:39,056 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 1201 transitions. [2022-01-10 08:24:39,056 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 08:24:39,056 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1201 transitions. [2022-01-10 08:24:39,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 08:24:39,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:39,058 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 08:24:39,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:39,265 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 08:24:39,265 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:39,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:39,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1163818986, now seen corresponding path program 1 times [2022-01-10 08:24:39,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:39,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664568119] [2022-01-10 08:24:39,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:39,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:39,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:39,277 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 08:24:39,307 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 08:24:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:39,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:24:39,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:39,463 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 08:24:39,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:39,464 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:39,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664568119] [2022-01-10 08:24:39,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664568119] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:39,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:39,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:24:39,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891720643] [2022-01-10 08:24:39,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:39,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:24:39,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:39,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:24:39,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:24:39,469 INFO L87 Difference]: Start difference. First operand 811 states and 1201 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 08:24:39,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:39,516 INFO L93 Difference]: Finished difference Result 1225 states and 1778 transitions. [2022-01-10 08:24:39,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:24:39,517 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 08:24:39,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:39,521 INFO L225 Difference]: With dead ends: 1225 [2022-01-10 08:24:39,521 INFO L226 Difference]: Without dead ends: 831 [2022-01-10 08:24:39,522 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 08:24:39,523 INFO L933 BasicCegarLoop]: 793 mSDtfsCounter, 7 mSDsluCounter, 3165 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3958 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 08:24:39,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 3958 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:39,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2022-01-10 08:24:39,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 821. [2022-01-10 08:24:39,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 703 states have (on average 1.492176386913229) internal successors, (1049), 711 states have internal predecessors, (1049), 76 states have call successors, (76), 35 states have call predecessors, (76), 40 states have return successors, (84), 77 states have call predecessors, (84), 74 states have call successors, (84) [2022-01-10 08:24:39,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1209 transitions. [2022-01-10 08:24:39,552 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1209 transitions. Word has length 66 [2022-01-10 08:24:39,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:39,553 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 1209 transitions. [2022-01-10 08:24:39,553 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 08:24:39,554 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1209 transitions. [2022-01-10 08:24:39,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 08:24:39,560 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:39,560 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 08:24:39,569 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 08:24:39,771 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 08:24:39,772 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:39,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:39,772 INFO L85 PathProgramCache]: Analyzing trace with hash 134459688, now seen corresponding path program 1 times [2022-01-10 08:24:39,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:39,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940464481] [2022-01-10 08:24:39,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:39,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:39,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:39,775 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 08:24:39,777 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 08:24:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:39,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:39,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:39,947 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 08:24:39,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:39,947 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:39,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940464481] [2022-01-10 08:24:39,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940464481] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:39,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:39,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:39,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318402534] [2022-01-10 08:24:39,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:39,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:39,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:39,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:39,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:39,949 INFO L87 Difference]: Start difference. First operand 821 states and 1209 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 08:24:39,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:39,989 INFO L93 Difference]: Finished difference Result 1591 states and 2257 transitions. [2022-01-10 08:24:39,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:39,990 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 08:24:39,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:39,994 INFO L225 Difference]: With dead ends: 1591 [2022-01-10 08:24:39,994 INFO L226 Difference]: Without dead ends: 1187 [2022-01-10 08:24:39,995 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 08:24:39,995 INFO L933 BasicCegarLoop]: 801 mSDtfsCounter, 744 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 933 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 08:24:39,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 933 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:39,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2022-01-10 08:24:40,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1179. [2022-01-10 08:24:40,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 987 states have (on average 1.446808510638298) internal successors, (1428), 999 states have internal predecessors, (1428), 116 states have call successors, (116), 63 states have call predecessors, (116), 74 states have return successors, (132), 119 states have call predecessors, (132), 114 states have call successors, (132) [2022-01-10 08:24:40,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1676 transitions. [2022-01-10 08:24:40,032 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1676 transitions. Word has length 66 [2022-01-10 08:24:40,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:40,032 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1676 transitions. [2022-01-10 08:24:40,033 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 08:24:40,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1676 transitions. [2022-01-10 08:24:40,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 08:24:40,034 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:40,034 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 08:24:40,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 08:24:40,245 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 08:24:40,245 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:40,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:40,246 INFO L85 PathProgramCache]: Analyzing trace with hash 809162453, now seen corresponding path program 1 times [2022-01-10 08:24:40,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:40,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451568758] [2022-01-10 08:24:40,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:40,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:40,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:40,248 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 08:24:40,276 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 08:24:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:40,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:24:40,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:40,476 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 08:24:40,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:40,477 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:40,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451568758] [2022-01-10 08:24:40,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451568758] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:40,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:40,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:24:40,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738043460] [2022-01-10 08:24:40,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:40,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:24:40,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:40,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:24:40,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:24:40,478 INFO L87 Difference]: Start difference. First operand 1179 states and 1676 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 08:24:40,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:40,531 INFO L93 Difference]: Finished difference Result 1969 states and 2744 transitions. [2022-01-10 08:24:40,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:24:40,532 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 08:24:40,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:40,537 INFO L225 Difference]: With dead ends: 1969 [2022-01-10 08:24:40,537 INFO L226 Difference]: Without dead ends: 1207 [2022-01-10 08:24:40,538 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 08:24:40,539 INFO L933 BasicCegarLoop]: 791 mSDtfsCounter, 4 mSDsluCounter, 3158 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3949 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 08:24:40,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3949 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:40,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-01-10 08:24:40,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1199. [2022-01-10 08:24:40,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1003 states have (on average 1.4356929212362912) internal successors, (1440), 1015 states have internal predecessors, (1440), 116 states have call successors, (116), 63 states have call predecessors, (116), 78 states have return successors, (136), 123 states have call predecessors, (136), 114 states have call successors, (136) [2022-01-10 08:24:40,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1692 transitions. [2022-01-10 08:24:40,577 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1692 transitions. Word has length 83 [2022-01-10 08:24:40,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:40,578 INFO L470 AbstractCegarLoop]: Abstraction has 1199 states and 1692 transitions. [2022-01-10 08:24:40,578 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 08:24:40,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1692 transitions. [2022-01-10 08:24:40,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 08:24:40,579 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:40,579 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 08:24:40,602 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 08:24:40,803 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 08:24:40,804 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:40,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:40,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1702648791, now seen corresponding path program 1 times [2022-01-10 08:24:40,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:40,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694044935] [2022-01-10 08:24:40,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:40,805 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:40,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:40,806 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 08:24:40,807 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 08:24:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:40,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:24:40,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:41,046 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 08:24:41,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:41,046 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:41,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694044935] [2022-01-10 08:24:41,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694044935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:41,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:41,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:24:41,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850449530] [2022-01-10 08:24:41,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:41,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:41,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:41,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:41,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:41,047 INFO L87 Difference]: Start difference. First operand 1199 states and 1692 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:24:41,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:41,783 INFO L93 Difference]: Finished difference Result 2901 states and 3980 transitions. [2022-01-10 08:24:41,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:24:41,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 83 [2022-01-10 08:24:41,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:41,791 INFO L225 Difference]: With dead ends: 2901 [2022-01-10 08:24:41,791 INFO L226 Difference]: Without dead ends: 2117 [2022-01-10 08:24:41,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 79 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 08:24:41,794 INFO L933 BasicCegarLoop]: 801 mSDtfsCounter, 504 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1980 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:41,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 1980 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 08:24:41,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2022-01-10 08:24:41,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 2069. [2022-01-10 08:24:41,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 1691 states have (on average 1.380248373743347) internal successors, (2334), 1735 states have internal predecessors, (2334), 202 states have call successors, (202), 119 states have call predecessors, (202), 174 states have return successors, (292), 219 states have call predecessors, (292), 200 states have call successors, (292) [2022-01-10 08:24:41,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2828 transitions. [2022-01-10 08:24:41,872 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2828 transitions. Word has length 83 [2022-01-10 08:24:41,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:41,873 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 2828 transitions. [2022-01-10 08:24:41,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:24:41,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2828 transitions. [2022-01-10 08:24:41,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 08:24:41,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:41,875 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 08:24:41,893 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 08:24:42,082 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 08:24:42,082 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:42,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:42,083 INFO L85 PathProgramCache]: Analyzing trace with hash 330841493, now seen corresponding path program 1 times [2022-01-10 08:24:42,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:42,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079331433] [2022-01-10 08:24:42,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:42,083 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:42,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:42,084 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 08:24:42,086 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 08:24:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:42,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:42,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:42,307 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 08:24:42,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:42,307 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:42,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079331433] [2022-01-10 08:24:42,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079331433] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:42,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:42,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:42,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580490409] [2022-01-10 08:24:42,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:42,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:24:42,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:42,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:24:42,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:24:42,308 INFO L87 Difference]: Start difference. First operand 2069 states and 2828 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 08:24:42,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:42,620 INFO L93 Difference]: Finished difference Result 5305 states and 7131 transitions. [2022-01-10 08:24:42,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:24:42,620 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 08:24:42,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:42,633 INFO L225 Difference]: With dead ends: 5305 [2022-01-10 08:24:42,633 INFO L226 Difference]: Without dead ends: 3669 [2022-01-10 08:24:42,638 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 08:24:42,639 INFO L933 BasicCegarLoop]: 765 mSDtfsCounter, 1105 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:42,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1138 Valid, 1202 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:24:42,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3669 states. [2022-01-10 08:24:42,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3669 to 3665. [2022-01-10 08:24:42,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3665 states, 2931 states have (on average 1.3326509723643807) internal successors, (3906), 3023 states have internal predecessors, (3906), 382 states have call successors, (382), 231 states have call predecessors, (382), 350 states have return successors, (629), 419 states have call predecessors, (629), 380 states have call successors, (629) [2022-01-10 08:24:42,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3665 states to 3665 states and 4917 transitions. [2022-01-10 08:24:42,769 INFO L78 Accepts]: Start accepts. Automaton has 3665 states and 4917 transitions. Word has length 83 [2022-01-10 08:24:42,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:42,769 INFO L470 AbstractCegarLoop]: Abstraction has 3665 states and 4917 transitions. [2022-01-10 08:24:42,769 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 08:24:42,770 INFO L276 IsEmpty]: Start isEmpty. Operand 3665 states and 4917 transitions. [2022-01-10 08:24:42,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 08:24:42,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:42,773 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 08:24:42,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-01-10 08:24:42,980 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 08:24:42,980 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:42,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:42,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1137671849, now seen corresponding path program 1 times [2022-01-10 08:24:42,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:42,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22992681] [2022-01-10 08:24:42,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:42,981 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:42,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:42,982 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 08:24:42,983 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 08:24:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:43,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:43,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:43,172 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 08:24:43,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:43,172 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:43,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22992681] [2022-01-10 08:24:43,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22992681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:43,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:43,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:43,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013921926] [2022-01-10 08:24:43,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:43,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:43,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:43,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:43,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:43,173 INFO L87 Difference]: Start difference. First operand 3665 states and 4917 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 08:24:43,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:43,294 INFO L93 Difference]: Finished difference Result 9925 states and 13138 transitions. [2022-01-10 08:24:43,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:43,294 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 08:24:43,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:43,312 INFO L225 Difference]: With dead ends: 9925 [2022-01-10 08:24:43,312 INFO L226 Difference]: Without dead ends: 5233 [2022-01-10 08:24:43,322 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 08:24:43,323 INFO L933 BasicCegarLoop]: 911 mSDtfsCounter, 116 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:43,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 1696 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:43,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5233 states. [2022-01-10 08:24:43,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5233 to 5233. [2022-01-10 08:24:43,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 4155 states have (on average 1.3145607701564381) internal successors, (5462), 4287 states have internal predecessors, (5462), 546 states have call successors, (546), 343 states have call predecessors, (546), 530 states have return successors, (961), 611 states have call predecessors, (961), 544 states have call successors, (961) [2022-01-10 08:24:43,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 6969 transitions. [2022-01-10 08:24:43,488 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 6969 transitions. Word has length 85 [2022-01-10 08:24:43,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:43,488 INFO L470 AbstractCegarLoop]: Abstraction has 5233 states and 6969 transitions. [2022-01-10 08:24:43,488 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 08:24:43,488 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 6969 transitions. [2022-01-10 08:24:43,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-10 08:24:43,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:43,499 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 08:24:43,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:43,707 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 08:24:43,707 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:43,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:43,708 INFO L85 PathProgramCache]: Analyzing trace with hash -960985249, now seen corresponding path program 1 times [2022-01-10 08:24:43,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:43,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539071358] [2022-01-10 08:24:43,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:43,708 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:43,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:43,709 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 08:24:43,710 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 08:24:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:43,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:24:43,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:44,037 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 08:24:44,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:44,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:44,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539071358] [2022-01-10 08:24:44,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539071358] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:44,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:44,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:24:44,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42834677] [2022-01-10 08:24:44,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:44,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:24:44,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:44,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:24:44,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:24:44,039 INFO L87 Difference]: Start difference. First operand 5233 states and 6969 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 08:24:44,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:44,131 INFO L93 Difference]: Finished difference Result 10079 states and 13413 transitions. [2022-01-10 08:24:44,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:24:44,132 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 08:24:44,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:44,148 INFO L225 Difference]: With dead ends: 10079 [2022-01-10 08:24:44,148 INFO L226 Difference]: Without dead ends: 5299 [2022-01-10 08:24:44,157 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 08:24:44,159 INFO L933 BasicCegarLoop]: 793 mSDtfsCounter, 37 mSDsluCounter, 3163 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3956 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 08:24:44,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 3956 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:44,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5299 states. [2022-01-10 08:24:44,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5299 to 4753. [2022-01-10 08:24:44,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4753 states, 3843 states have (on average 1.305230288836846) internal successors, (5016), 3914 states have internal predecessors, (5016), 450 states have call successors, (450), 292 states have call predecessors, (450), 458 states have return successors, (818), 555 states have call predecessors, (818), 448 states have call successors, (818) [2022-01-10 08:24:44,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4753 states to 4753 states and 6284 transitions. [2022-01-10 08:24:44,357 INFO L78 Accepts]: Start accepts. Automaton has 4753 states and 6284 transitions. Word has length 155 [2022-01-10 08:24:44,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:44,357 INFO L470 AbstractCegarLoop]: Abstraction has 4753 states and 6284 transitions. [2022-01-10 08:24:44,357 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 08:24:44,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4753 states and 6284 transitions. [2022-01-10 08:24:44,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 08:24:44,366 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:44,366 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 08:24:44,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-01-10 08:24:44,583 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 08:24:44,583 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:44,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:44,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1516450385, now seen corresponding path program 1 times [2022-01-10 08:24:44,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:44,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652969153] [2022-01-10 08:24:44,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:44,584 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:44,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:44,588 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 08:24:44,590 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 08:24:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:44,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:44,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:44,935 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 08:24:44,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:44,935 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:44,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652969153] [2022-01-10 08:24:44,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652969153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:44,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:44,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:44,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266670676] [2022-01-10 08:24:44,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:44,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:44,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:44,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:44,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:44,937 INFO L87 Difference]: Start difference. First operand 4753 states and 6284 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 08:24:44,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:44,994 INFO L93 Difference]: Finished difference Result 7315 states and 9602 transitions. [2022-01-10 08:24:44,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:44,994 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 08:24:44,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:45,005 INFO L225 Difference]: With dead ends: 7315 [2022-01-10 08:24:45,005 INFO L226 Difference]: Without dead ends: 3059 [2022-01-10 08:24:45,013 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 08:24:45,014 INFO L933 BasicCegarLoop]: 791 mSDtfsCounter, 148 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1427 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 08:24:45,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 1427 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:45,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2022-01-10 08:24:45,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 3059. [2022-01-10 08:24:45,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3059 states, 2491 states have (on average 1.3227619429947812) internal successors, (3295), 2536 states have internal predecessors, (3295), 274 states have call successors, (274), 180 states have call predecessors, (274), 292 states have return successors, (498), 343 states have call predecessors, (498), 272 states have call successors, (498) [2022-01-10 08:24:45,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3059 states to 3059 states and 4067 transitions. [2022-01-10 08:24:45,090 INFO L78 Accepts]: Start accepts. Automaton has 3059 states and 4067 transitions. Word has length 156 [2022-01-10 08:24:45,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:45,090 INFO L470 AbstractCegarLoop]: Abstraction has 3059 states and 4067 transitions. [2022-01-10 08:24:45,090 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 08:24:45,091 INFO L276 IsEmpty]: Start isEmpty. Operand 3059 states and 4067 transitions. [2022-01-10 08:24:45,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 08:24:45,097 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:45,097 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 08:24:45,128 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 08:24:45,304 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 08:24:45,305 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:45,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:45,305 INFO L85 PathProgramCache]: Analyzing trace with hash -673878690, now seen corresponding path program 1 times [2022-01-10 08:24:45,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:45,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567508937] [2022-01-10 08:24:45,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:45,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:45,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:45,307 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 08:24:45,309 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 08:24:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:45,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:45,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:45,649 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 08:24:45,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:45,649 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:45,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567508937] [2022-01-10 08:24:45,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567508937] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:45,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:45,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:45,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990557229] [2022-01-10 08:24:45,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:45,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:45,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:45,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:45,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:45,650 INFO L87 Difference]: Start difference. First operand 3059 states and 4067 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 08:24:45,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:45,721 INFO L93 Difference]: Finished difference Result 7181 states and 9550 transitions. [2022-01-10 08:24:45,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:45,722 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 08:24:45,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:45,738 INFO L225 Difference]: With dead ends: 7181 [2022-01-10 08:24:45,738 INFO L226 Difference]: Without dead ends: 4843 [2022-01-10 08:24:45,744 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 08:24:45,745 INFO L933 BasicCegarLoop]: 818 mSDtfsCounter, 68 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1589 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 08:24:45,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 1589 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:45,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4843 states. [2022-01-10 08:24:45,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4843 to 4815. [2022-01-10 08:24:45,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4815 states, 3909 states have (on average 1.310821181887951) internal successors, (5124), 3990 states have internal predecessors, (5124), 430 states have call successors, (430), 288 states have call predecessors, (430), 474 states have return successors, (807), 537 states have call predecessors, (807), 428 states have call successors, (807) [2022-01-10 08:24:45,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4815 states to 4815 states and 6361 transitions. [2022-01-10 08:24:45,852 INFO L78 Accepts]: Start accepts. Automaton has 4815 states and 6361 transitions. Word has length 159 [2022-01-10 08:24:45,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:45,852 INFO L470 AbstractCegarLoop]: Abstraction has 4815 states and 6361 transitions. [2022-01-10 08:24:45,853 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 08:24:45,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4815 states and 6361 transitions. [2022-01-10 08:24:45,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 08:24:45,860 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:45,860 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 08:24:45,881 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 08:24:46,068 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 08:24:46,068 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:46,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:46,068 INFO L85 PathProgramCache]: Analyzing trace with hash -996501983, now seen corresponding path program 1 times [2022-01-10 08:24:46,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:46,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965276632] [2022-01-10 08:24:46,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:46,069 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:46,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:46,071 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 08:24:46,071 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 08:24:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:46,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:46,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:46,386 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 08:24:46,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:46,386 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:46,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965276632] [2022-01-10 08:24:46,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965276632] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:46,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:46,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:46,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884388437] [2022-01-10 08:24:46,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:46,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:46,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:46,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:46,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:46,387 INFO L87 Difference]: Start difference. First operand 4815 states and 6361 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 08:24:46,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:46,567 INFO L93 Difference]: Finished difference Result 12547 states and 16918 transitions. [2022-01-10 08:24:46,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:46,568 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 08:24:46,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:46,604 INFO L225 Difference]: With dead ends: 12547 [2022-01-10 08:24:46,604 INFO L226 Difference]: Without dead ends: 8453 [2022-01-10 08:24:46,616 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 08:24:46,618 INFO L933 BasicCegarLoop]: 863 mSDtfsCounter, 102 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1638 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 08:24:46,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 1638 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:46,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8453 states. [2022-01-10 08:24:46,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8453 to 8377. [2022-01-10 08:24:46,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8377 states, 6771 states have (on average 1.2837099394476443) internal successors, (8692), 6902 states have internal predecessors, (8692), 766 states have call successors, (766), 522 states have call predecessors, (766), 838 states have return successors, (1605), 953 states have call predecessors, (1605), 764 states have call successors, (1605) [2022-01-10 08:24:46,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8377 states to 8377 states and 11063 transitions. [2022-01-10 08:24:46,864 INFO L78 Accepts]: Start accepts. Automaton has 8377 states and 11063 transitions. Word has length 160 [2022-01-10 08:24:46,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:46,864 INFO L470 AbstractCegarLoop]: Abstraction has 8377 states and 11063 transitions. [2022-01-10 08:24:46,864 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 08:24:46,864 INFO L276 IsEmpty]: Start isEmpty. Operand 8377 states and 11063 transitions. [2022-01-10 08:24:46,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-10 08:24:46,874 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:46,874 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 08:24:46,896 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 08:24:47,081 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 08:24:47,081 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:47,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:47,082 INFO L85 PathProgramCache]: Analyzing trace with hash -323292612, now seen corresponding path program 1 times [2022-01-10 08:24:47,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:47,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474531358] [2022-01-10 08:24:47,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:47,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:47,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:47,083 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 08:24:47,099 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 08:24:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:47,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:47,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:47,418 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 08:24:47,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:47,418 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:47,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474531358] [2022-01-10 08:24:47,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474531358] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:47,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:47,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:47,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762759915] [2022-01-10 08:24:47,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:47,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:47,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:47,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:47,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:47,420 INFO L87 Difference]: Start difference. First operand 8377 states and 11063 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 08:24:47,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:47,698 INFO L93 Difference]: Finished difference Result 23547 states and 31278 transitions. [2022-01-10 08:24:47,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:47,698 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 08:24:47,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:47,740 INFO L225 Difference]: With dead ends: 23547 [2022-01-10 08:24:47,740 INFO L226 Difference]: Without dead ends: 15891 [2022-01-10 08:24:47,758 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 08:24:47,759 INFO L933 BasicCegarLoop]: 822 mSDtfsCounter, 72 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1594 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 08:24:47,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 1594 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:47,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15891 states. [2022-01-10 08:24:48,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15891 to 15887. [2022-01-10 08:24:48,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15887 states, 12804 states have (on average 1.266947828803499) internal successors, (16222), 13064 states have internal predecessors, (16222), 1474 states have call successors, (1474), 1008 states have call predecessors, (1474), 1607 states have return successors, (3079), 1815 states have call predecessors, (3079), 1472 states have call successors, (3079) [2022-01-10 08:24:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15887 states to 15887 states and 20775 transitions. [2022-01-10 08:24:48,241 INFO L78 Accepts]: Start accepts. Automaton has 15887 states and 20775 transitions. Word has length 161 [2022-01-10 08:24:48,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:48,241 INFO L470 AbstractCegarLoop]: Abstraction has 15887 states and 20775 transitions. [2022-01-10 08:24:48,241 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 08:24:48,241 INFO L276 IsEmpty]: Start isEmpty. Operand 15887 states and 20775 transitions. [2022-01-10 08:24:48,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-10 08:24:48,257 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:48,257 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:24:48,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-01-10 08:24:48,464 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 08:24:48,464 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:48,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:48,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1794755839, now seen corresponding path program 1 times [2022-01-10 08:24:48,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:48,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090127998] [2022-01-10 08:24:48,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:48,465 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:48,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:48,466 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 08:24:48,467 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 08:24:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:48,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:48,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:48,736 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 08:24:48,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:48,744 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:48,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090127998] [2022-01-10 08:24:48,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090127998] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:48,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:48,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:48,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837091029] [2022-01-10 08:24:48,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:48,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:48,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:48,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:48,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:48,745 INFO L87 Difference]: Start difference. First operand 15887 states and 20775 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 3 states have internal predecessors, (87), 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 08:24:50,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:50,045 INFO L93 Difference]: Finished difference Result 45440 states and 59429 transitions. [2022-01-10 08:24:50,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:24:50,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 3 states have internal predecessors, (87), 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 08:24:50,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:50,128 INFO L225 Difference]: With dead ends: 45440 [2022-01-10 08:24:50,128 INFO L226 Difference]: Without dead ends: 29959 [2022-01-10 08:24:50,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-10 08:24:50,162 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 1128 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:50,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1166 Valid, 1556 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 08:24:50,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29959 states. [2022-01-10 08:24:50,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29959 to 29783. [2022-01-10 08:24:50,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29783 states, 23794 states have (on average 1.2564932335882997) internal successors, (29897), 24277 states have internal predecessors, (29897), 2869 states have call successors, (2869), 1959 states have call predecessors, (2869), 3118 states have return successors, (5873), 3547 states have call predecessors, (5873), 2867 states have call successors, (5873) [2022-01-10 08:24:51,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29783 states to 29783 states and 38639 transitions. [2022-01-10 08:24:51,008 INFO L78 Accepts]: Start accepts. Automaton has 29783 states and 38639 transitions. Word has length 166 [2022-01-10 08:24:51,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:51,008 INFO L470 AbstractCegarLoop]: Abstraction has 29783 states and 38639 transitions. [2022-01-10 08:24:51,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 3 states have internal predecessors, (87), 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 08:24:51,009 INFO L276 IsEmpty]: Start isEmpty. Operand 29783 states and 38639 transitions. [2022-01-10 08:24:51,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-10 08:24:51,030 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:51,030 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, 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] [2022-01-10 08:24:51,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-01-10 08:24:51,237 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 08:24:51,237 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:51,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:51,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1471705111, now seen corresponding path program 1 times [2022-01-10 08:24:51,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:51,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598998033] [2022-01-10 08:24:51,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:51,238 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:51,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:51,240 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 08:24:51,241 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 08:24:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:51,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:51,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:51,545 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 08:24:51,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:51,545 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:51,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598998033] [2022-01-10 08:24:51,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598998033] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:51,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:51,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:51,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578356382] [2022-01-10 08:24:51,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:51,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:24:51,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:51,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:24:51,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:24:51,547 INFO L87 Difference]: Start difference. First operand 29783 states and 38639 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 08:24:52,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:52,322 INFO L93 Difference]: Finished difference Result 47411 states and 61736 transitions. [2022-01-10 08:24:52,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:24:52,323 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 08:24:52,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:52,376 INFO L225 Difference]: With dead ends: 47411 [2022-01-10 08:24:52,376 INFO L226 Difference]: Without dead ends: 18076 [2022-01-10 08:24:52,422 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 08:24:52,423 INFO L933 BasicCegarLoop]: 772 mSDtfsCounter, 1058 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:52,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1088 Valid, 1200 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:24:52,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18076 states. [2022-01-10 08:24:52,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18076 to 18076. [2022-01-10 08:24:52,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18076 states, 14663 states have (on average 1.2603832776375912) internal successors, (18481), 14912 states have internal predecessors, (18481), 1645 states have call successors, (1645), 1063 states have call predecessors, (1645), 1766 states have return successors, (3253), 2101 states have call predecessors, (3253), 1643 states have call successors, (3253) [2022-01-10 08:24:53,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18076 states to 18076 states and 23379 transitions. [2022-01-10 08:24:53,042 INFO L78 Accepts]: Start accepts. Automaton has 18076 states and 23379 transitions. Word has length 185 [2022-01-10 08:24:53,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:53,042 INFO L470 AbstractCegarLoop]: Abstraction has 18076 states and 23379 transitions. [2022-01-10 08:24:53,042 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 08:24:53,042 INFO L276 IsEmpty]: Start isEmpty. Operand 18076 states and 23379 transitions. [2022-01-10 08:24:53,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-10 08:24:53,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:53,055 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, 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] [2022-01-10 08:24:53,065 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 08:24:53,266 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 08:24:53,266 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:53,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:53,266 INFO L85 PathProgramCache]: Analyzing trace with hash 300189613, now seen corresponding path program 2 times [2022-01-10 08:24:53,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:53,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878024376] [2022-01-10 08:24:53,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 08:24:53,267 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:53,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:53,285 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 08:24:53,323 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 08:24:53,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 08:24:53,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 08:24:53,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:53,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:53,625 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 08:24:53,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:53,625 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:53,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878024376] [2022-01-10 08:24:53,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878024376] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:53,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:53,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:53,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369381068] [2022-01-10 08:24:53,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:53,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:53,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:53,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:53,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:53,626 INFO L87 Difference]: Start difference. First operand 18076 states and 23379 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 08:24:54,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:54,277 INFO L93 Difference]: Finished difference Result 52542 states and 67839 transitions. [2022-01-10 08:24:54,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:54,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 185 [2022-01-10 08:24:54,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:54,400 INFO L225 Difference]: With dead ends: 52542 [2022-01-10 08:24:54,400 INFO L226 Difference]: Without dead ends: 35011 [2022-01-10 08:24:54,442 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 08:24:54,442 INFO L933 BasicCegarLoop]: 878 mSDtfsCounter, 764 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:54,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 1024 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:54,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35011 states. [2022-01-10 08:24:55,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35011 to 34834. [2022-01-10 08:24:55,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34834 states, 28153 states have (on average 1.2524064930913223) internal successors, (35259), 28568 states have internal predecessors, (35259), 3247 states have call successors, (3247), 2105 states have call predecessors, (3247), 3432 states have return successors, (6334), 4161 states have call predecessors, (6334), 3245 states have call successors, (6334) [2022-01-10 08:24:55,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34834 states to 34834 states and 44840 transitions. [2022-01-10 08:24:55,594 INFO L78 Accepts]: Start accepts. Automaton has 34834 states and 44840 transitions. Word has length 185 [2022-01-10 08:24:55,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:55,594 INFO L470 AbstractCegarLoop]: Abstraction has 34834 states and 44840 transitions. [2022-01-10 08:24:55,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 08:24:55,595 INFO L276 IsEmpty]: Start isEmpty. Operand 34834 states and 44840 transitions. [2022-01-10 08:24:55,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-10 08:24:55,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:55,605 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, 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] [2022-01-10 08:24:55,619 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 08:24:55,810 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 08:24:55,810 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:55,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:55,811 INFO L85 PathProgramCache]: Analyzing trace with hash -452291091, now seen corresponding path program 1 times [2022-01-10 08:24:55,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:55,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1316185550] [2022-01-10 08:24:55,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:55,812 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:55,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:55,828 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 08:24:55,828 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 08:24:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:55,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:55,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:56,200 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 08:24:56,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:56,201 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:56,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1316185550] [2022-01-10 08:24:56,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1316185550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:56,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:56,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:56,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325611849] [2022-01-10 08:24:56,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:56,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:56,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:56,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:56,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:56,204 INFO L87 Difference]: Start difference. First operand 34834 states and 44840 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 08:24:57,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:57,029 INFO L93 Difference]: Finished difference Result 68898 states and 88570 transitions. [2022-01-10 08:24:57,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:57,030 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 08:24:57,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:57,135 INFO L225 Difference]: With dead ends: 68898 [2022-01-10 08:24:57,135 INFO L226 Difference]: Without dead ends: 34560 [2022-01-10 08:24:57,187 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 08:24:57,188 INFO L933 BasicCegarLoop]: 870 mSDtfsCounter, 115 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1633 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 08:24:57,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 1633 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:57,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34560 states. [2022-01-10 08:24:58,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34560 to 34556. [2022-01-10 08:24:58,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34556 states, 27893 states have (on average 1.232997526261069) internal successors, (34392), 28372 states have internal predecessors, (34392), 3238 states have call successors, (3238), 2096 states have call predecessors, (3238), 3423 states have return successors, (5552), 4088 states have call predecessors, (5552), 3236 states have call successors, (5552) [2022-01-10 08:24:58,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34556 states to 34556 states and 43182 transitions. [2022-01-10 08:24:58,320 INFO L78 Accepts]: Start accepts. Automaton has 34556 states and 43182 transitions. Word has length 185 [2022-01-10 08:24:58,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:58,321 INFO L470 AbstractCegarLoop]: Abstraction has 34556 states and 43182 transitions. [2022-01-10 08:24:58,321 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 08:24:58,321 INFO L276 IsEmpty]: Start isEmpty. Operand 34556 states and 43182 transitions. [2022-01-10 08:24:58,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-01-10 08:24:58,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:58,343 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 08:24:58,351 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 08:24:58,544 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 08:24:58,544 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:58,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:58,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1367111987, now seen corresponding path program 1 times [2022-01-10 08:24:58,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:58,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876086909] [2022-01-10 08:24:58,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:58,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:58,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:58,549 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 08:24:58,550 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 08:24:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:58,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:58,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:58,947 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 08:24:58,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:58,948 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:58,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876086909] [2022-01-10 08:24:58,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [876086909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:58,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:58,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:58,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571022299] [2022-01-10 08:24:58,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:58,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:58,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:58,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:58,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:58,951 INFO L87 Difference]: Start difference. First operand 34556 states and 43182 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 08:24:59,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:59,345 INFO L93 Difference]: Finished difference Result 39550 states and 49387 transitions. [2022-01-10 08:24:59,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:59,346 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 08:24:59,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:59,354 INFO L225 Difference]: With dead ends: 39550 [2022-01-10 08:24:59,354 INFO L226 Difference]: Without dead ends: 403 [2022-01-10 08:24:59,405 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 08:24:59,405 INFO L933 BasicCegarLoop]: 822 mSDtfsCounter, 80 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1524 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 08:24:59,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 1524 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:59,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-01-10 08:24:59,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2022-01-10 08:24:59,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 369 states have (on average 1.5799457994579946) internal successors, (583), 370 states have internal predecessors, (583), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-10 08:24:59,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 637 transitions. [2022-01-10 08:24:59,416 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 637 transitions. Word has length 191 [2022-01-10 08:24:59,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:59,417 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 637 transitions. [2022-01-10 08:24:59,417 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 08:24:59,417 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 637 transitions. [2022-01-10 08:24:59,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:24:59,418 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:59,418 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:59,437 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 08:24:59,625 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 08:24:59,626 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:59,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:59,626 INFO L85 PathProgramCache]: Analyzing trace with hash -999047694, now seen corresponding path program 1 times [2022-01-10 08:24:59,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:59,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866808475] [2022-01-10 08:24:59,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:59,627 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:59,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:59,628 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 08:24:59,654 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 08:24:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:59,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:59,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:00,068 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 08:25:00,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:00,068 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:00,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866808475] [2022-01-10 08:25:00,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866808475] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:00,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:00,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:25:00,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529990078] [2022-01-10 08:25:00,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:00,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:25:00,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:00,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:25:00,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:25:00,070 INFO L87 Difference]: Start difference. First operand 403 states and 637 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:00,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:00,087 INFO L93 Difference]: Finished difference Result 794 states and 1255 transitions. [2022-01-10 08:25:00,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:25:00,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:00,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:00,088 INFO L225 Difference]: With dead ends: 794 [2022-01-10 08:25:00,088 INFO L226 Difference]: Without dead ends: 403 [2022-01-10 08:25:00,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 187 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 08:25:00,089 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 623 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 636 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 08:25:00,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [623 Valid, 636 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:00,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-01-10 08:25:00,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2022-01-10 08:25:00,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 369 states have (on average 1.5772357723577235) internal successors, (582), 370 states have internal predecessors, (582), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-10 08:25:00,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 636 transitions. [2022-01-10 08:25:00,097 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 636 transitions. Word has length 189 [2022-01-10 08:25:00,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:00,097 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 636 transitions. [2022-01-10 08:25:00,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:00,098 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 636 transitions. [2022-01-10 08:25:00,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:00,098 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:00,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:00,107 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 08:25:00,309 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 08:25:00,310 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:00,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:00,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1604822476, now seen corresponding path program 1 times [2022-01-10 08:25:00,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:00,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746761362] [2022-01-10 08:25:00,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:00,311 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:00,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:00,312 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 08:25:00,322 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 08:25:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:00,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:25:00,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:00,782 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 08:25:00,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:00,782 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:00,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746761362] [2022-01-10 08:25:00,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746761362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:00,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:00,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:25:00,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186805540] [2022-01-10 08:25:00,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:00,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:25:00,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:00,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:25:00,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:25:00,783 INFO L87 Difference]: Start difference. First operand 403 states and 636 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:00,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:00,806 INFO L93 Difference]: Finished difference Result 786 states and 1238 transitions. [2022-01-10 08:25:00,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:25:00,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:00,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:00,808 INFO L225 Difference]: With dead ends: 786 [2022-01-10 08:25:00,808 INFO L226 Difference]: Without dead ends: 403 [2022-01-10 08:25:00,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 187 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 08:25:00,817 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 614 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 635 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 08:25:00,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 635 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:00,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-01-10 08:25:00,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2022-01-10 08:25:00,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 369 states have (on average 1.5745257452574526) internal successors, (581), 370 states have internal predecessors, (581), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-10 08:25:00,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 635 transitions. [2022-01-10 08:25:00,830 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 635 transitions. Word has length 189 [2022-01-10 08:25:00,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:00,830 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 635 transitions. [2022-01-10 08:25:00,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:00,830 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 635 transitions. [2022-01-10 08:25:00,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:00,831 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:00,831 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:00,842 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 08:25:01,040 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 08:25:01,040 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:01,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:01,041 INFO L85 PathProgramCache]: Analyzing trace with hash -914990986, now seen corresponding path program 1 times [2022-01-10 08:25:01,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:01,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135332615] [2022-01-10 08:25:01,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:01,041 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:01,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:01,042 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 08:25:01,044 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 08:25:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:01,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:01,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:01,434 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 08:25:01,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:01,434 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:01,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135332615] [2022-01-10 08:25:01,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135332615] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:01,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:01,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:01,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617049862] [2022-01-10 08:25:01,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:01,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:01,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:01,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:01,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:01,435 INFO L87 Difference]: Start difference. First operand 403 states and 635 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:02,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:02,057 INFO L93 Difference]: Finished difference Result 1217 states and 1939 transitions. [2022-01-10 08:25:02,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:02,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:02,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:02,059 INFO L225 Difference]: With dead ends: 1217 [2022-01-10 08:25:02,059 INFO L226 Difference]: Without dead ends: 836 [2022-01-10 08:25:02,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:02,060 INFO L933 BasicCegarLoop]: 689 mSDtfsCounter, 1232 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:02,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1253 Valid, 1954 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 08:25:02,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-01-10 08:25:02,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 805. [2022-01-10 08:25:02,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 742 states have (on average 1.587601078167116) internal successors, (1178), 744 states have internal predecessors, (1178), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:25:02,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1277 transitions. [2022-01-10 08:25:02,075 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1277 transitions. Word has length 189 [2022-01-10 08:25:02,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:02,075 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 1277 transitions. [2022-01-10 08:25:02,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:02,075 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1277 transitions. [2022-01-10 08:25:02,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:02,076 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:02,076 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:02,084 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 08:25:02,284 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 08:25:02,284 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:02,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:02,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1103637498, now seen corresponding path program 1 times [2022-01-10 08:25:02,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:02,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471552813] [2022-01-10 08:25:02,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:02,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:02,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:02,286 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 08:25:02,288 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 08:25:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:02,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:02,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:02,771 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 08:25:02,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:02,771 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:02,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471552813] [2022-01-10 08:25:02,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471552813] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:02,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:02,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:02,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56775662] [2022-01-10 08:25:02,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:02,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:02,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:02,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:02,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:02,772 INFO L87 Difference]: Start difference. First operand 805 states and 1277 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:03,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:03,100 INFO L93 Difference]: Finished difference Result 1588 states and 2525 transitions. [2022-01-10 08:25:03,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:03,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:03,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:03,102 INFO L225 Difference]: With dead ends: 1588 [2022-01-10 08:25:03,102 INFO L226 Difference]: Without dead ends: 805 [2022-01-10 08:25:03,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:03,103 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 867 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:03,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [888 Valid, 1293 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:03,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-01-10 08:25:03,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2022-01-10 08:25:03,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 742 states have (on average 1.5781671159029649) internal successors, (1171), 744 states have internal predecessors, (1171), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:25:03,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1270 transitions. [2022-01-10 08:25:03,118 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1270 transitions. Word has length 189 [2022-01-10 08:25:03,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:03,118 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 1270 transitions. [2022-01-10 08:25:03,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:03,118 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1270 transitions. [2022-01-10 08:25:03,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:03,119 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:03,119 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:03,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:03,328 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 08:25:03,328 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:03,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:03,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1307301878, now seen corresponding path program 1 times [2022-01-10 08:25:03,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:03,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092932422] [2022-01-10 08:25:03,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:03,329 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:03,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:03,344 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 08:25:03,345 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 08:25:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:03,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:03,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:03,723 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 08:25:03,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:03,723 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:03,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092932422] [2022-01-10 08:25:03,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092932422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:03,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:03,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:03,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188612479] [2022-01-10 08:25:03,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:03,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:03,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:03,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:03,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:03,725 INFO L87 Difference]: Start difference. First operand 805 states and 1270 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:04,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:04,055 INFO L93 Difference]: Finished difference Result 1588 states and 2511 transitions. [2022-01-10 08:25:04,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:04,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:04,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:04,057 INFO L225 Difference]: With dead ends: 1588 [2022-01-10 08:25:04,057 INFO L226 Difference]: Without dead ends: 805 [2022-01-10 08:25:04,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:04,059 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 861 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:04,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [882 Valid, 1286 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:04,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-01-10 08:25:04,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2022-01-10 08:25:04,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 742 states have (on average 1.568733153638814) internal successors, (1164), 744 states have internal predecessors, (1164), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:25:04,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1263 transitions. [2022-01-10 08:25:04,105 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1263 transitions. Word has length 189 [2022-01-10 08:25:04,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:04,105 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 1263 transitions. [2022-01-10 08:25:04,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:04,105 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1263 transitions. [2022-01-10 08:25:04,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:04,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:04,106 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:04,116 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 08:25:04,314 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 08:25:04,315 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:04,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:04,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1595622278, now seen corresponding path program 1 times [2022-01-10 08:25:04,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:04,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654085244] [2022-01-10 08:25:04,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:04,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:04,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:04,317 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 08:25:04,319 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 08:25:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:04,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:04,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:04,686 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 08:25:04,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:04,686 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:04,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654085244] [2022-01-10 08:25:04,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654085244] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:04,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:04,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:04,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476505797] [2022-01-10 08:25:04,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:04,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:04,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:04,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:04,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:04,687 INFO L87 Difference]: Start difference. First operand 805 states and 1263 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:05,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:05,006 INFO L93 Difference]: Finished difference Result 1588 states and 2497 transitions. [2022-01-10 08:25:05,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:05,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:05,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:05,008 INFO L225 Difference]: With dead ends: 1588 [2022-01-10 08:25:05,008 INFO L226 Difference]: Without dead ends: 805 [2022-01-10 08:25:05,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:05,010 INFO L933 BasicCegarLoop]: 596 mSDtfsCounter, 855 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:05,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 1279 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:05,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-01-10 08:25:05,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2022-01-10 08:25:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 742 states have (on average 1.559299191374663) internal successors, (1157), 744 states have internal predecessors, (1157), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:25:05,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1256 transitions. [2022-01-10 08:25:05,027 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1256 transitions. Word has length 189 [2022-01-10 08:25:05,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:05,027 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 1256 transitions. [2022-01-10 08:25:05,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:05,027 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1256 transitions. [2022-01-10 08:25:05,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:05,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:05,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:05,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-01-10 08:25:05,239 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 08:25:05,240 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:05,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:05,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1220228982, now seen corresponding path program 1 times [2022-01-10 08:25:05,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:05,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225585026] [2022-01-10 08:25:05,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:05,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:05,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:05,241 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 08:25:05,243 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 08:25:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:05,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:05,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:05,629 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 08:25:05,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:05,630 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:05,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225585026] [2022-01-10 08:25:05,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225585026] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:05,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:05,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:05,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772317358] [2022-01-10 08:25:05,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:05,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:05,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:05,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:05,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:05,631 INFO L87 Difference]: Start difference. First operand 805 states and 1256 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:06,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:06,001 INFO L93 Difference]: Finished difference Result 1588 states and 2483 transitions. [2022-01-10 08:25:06,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:06,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:06,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:06,003 INFO L225 Difference]: With dead ends: 1588 [2022-01-10 08:25:06,003 INFO L226 Difference]: Without dead ends: 805 [2022-01-10 08:25:06,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:06,005 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 849 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:06,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [870 Valid, 1272 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:06,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-01-10 08:25:06,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2022-01-10 08:25:06,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 742 states have (on average 1.5498652291105122) internal successors, (1150), 744 states have internal predecessors, (1150), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:25:06,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1249 transitions. [2022-01-10 08:25:06,028 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1249 transitions. Word has length 189 [2022-01-10 08:25:06,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:06,029 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 1249 transitions. [2022-01-10 08:25:06,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:06,029 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1249 transitions. [2022-01-10 08:25:06,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:06,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:06,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:06,042 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 08:25:06,240 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 08:25:06,241 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:06,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:06,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1726704890, now seen corresponding path program 1 times [2022-01-10 08:25:06,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:06,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140936987] [2022-01-10 08:25:06,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:06,242 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:06,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:06,243 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 08:25:06,244 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 08:25:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:06,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:06,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:06,616 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 08:25:06,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:06,617 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:06,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140936987] [2022-01-10 08:25:06,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140936987] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:06,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:06,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:06,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159419856] [2022-01-10 08:25:06,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:06,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:06,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:06,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:06,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:06,618 INFO L87 Difference]: Start difference. First operand 805 states and 1249 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:06,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:06,939 INFO L93 Difference]: Finished difference Result 1588 states and 2469 transitions. [2022-01-10 08:25:06,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:06,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:06,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:06,941 INFO L225 Difference]: With dead ends: 1588 [2022-01-10 08:25:06,941 INFO L226 Difference]: Without dead ends: 805 [2022-01-10 08:25:06,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:06,942 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 842 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:06,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [863 Valid, 1265 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:06,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-01-10 08:25:06,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2022-01-10 08:25:06,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 742 states have (on average 1.5404312668463611) internal successors, (1143), 744 states have internal predecessors, (1143), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:25:06,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1242 transitions. [2022-01-10 08:25:06,960 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1242 transitions. Word has length 189 [2022-01-10 08:25:06,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:06,960 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 1242 transitions. [2022-01-10 08:25:06,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:06,960 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1242 transitions. [2022-01-10 08:25:06,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:06,961 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:06,961 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:06,969 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 08:25:07,169 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 08:25:07,169 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:07,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:07,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1900880516, now seen corresponding path program 1 times [2022-01-10 08:25:07,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:07,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153786684] [2022-01-10 08:25:07,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:07,170 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:07,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:07,171 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 08:25:07,173 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 08:25:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:07,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:07,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:07,590 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 08:25:07,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:07,590 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:07,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153786684] [2022-01-10 08:25:07,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153786684] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:07,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:07,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:07,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922256989] [2022-01-10 08:25:07,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:07,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:07,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:07,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:07,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:07,591 INFO L87 Difference]: Start difference. First operand 805 states and 1242 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:07,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:07,944 INFO L93 Difference]: Finished difference Result 1588 states and 2455 transitions. [2022-01-10 08:25:07,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:07,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:07,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:07,945 INFO L225 Difference]: With dead ends: 1588 [2022-01-10 08:25:07,946 INFO L226 Difference]: Without dead ends: 805 [2022-01-10 08:25:07,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:07,947 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 836 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:07,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [857 Valid, 1258 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:07,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-01-10 08:25:07,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2022-01-10 08:25:07,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 742 states have (on average 1.5309973045822103) internal successors, (1136), 744 states have internal predecessors, (1136), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:25:07,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1235 transitions. [2022-01-10 08:25:07,966 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1235 transitions. Word has length 189 [2022-01-10 08:25:07,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:07,966 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 1235 transitions. [2022-01-10 08:25:07,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:07,966 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1235 transitions. [2022-01-10 08:25:07,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:07,967 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:07,967 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:07,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-01-10 08:25:08,175 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 08:25:08,176 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:08,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:08,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1172949384, now seen corresponding path program 1 times [2022-01-10 08:25:08,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:08,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108737774] [2022-01-10 08:25:08,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:08,176 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:08,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:08,177 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 08:25:08,179 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 08:25:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:08,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:08,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:08,610 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 08:25:08,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:08,610 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:08,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108737774] [2022-01-10 08:25:08,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108737774] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:08,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:08,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:08,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295391074] [2022-01-10 08:25:08,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:08,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:08,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:08,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:08,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:08,611 INFO L87 Difference]: Start difference. First operand 805 states and 1235 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:08,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:08,928 INFO L93 Difference]: Finished difference Result 1588 states and 2441 transitions. [2022-01-10 08:25:08,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:08,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:08,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:08,930 INFO L225 Difference]: With dead ends: 1588 [2022-01-10 08:25:08,930 INFO L226 Difference]: Without dead ends: 805 [2022-01-10 08:25:08,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:08,931 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 830 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:08,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 1251 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:08,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-01-10 08:25:08,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2022-01-10 08:25:08,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 742 states have (on average 1.5215633423180592) internal successors, (1129), 744 states have internal predecessors, (1129), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:25:08,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1228 transitions. [2022-01-10 08:25:08,951 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1228 transitions. Word has length 189 [2022-01-10 08:25:08,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:08,951 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 1228 transitions. [2022-01-10 08:25:08,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:08,951 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1228 transitions. [2022-01-10 08:25:08,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:08,952 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:08,952 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:08,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-01-10 08:25:09,160 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 08:25:09,160 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:09,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:09,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1621478908, now seen corresponding path program 1 times [2022-01-10 08:25:09,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:09,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3297082] [2022-01-10 08:25:09,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:09,161 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:09,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:09,162 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 08:25:09,162 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 08:25:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:09,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:09,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:09,531 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 08:25:09,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:09,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:09,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3297082] [2022-01-10 08:25:09,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3297082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:09,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:09,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:09,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536097945] [2022-01-10 08:25:09,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:09,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:09,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:09,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:09,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:09,532 INFO L87 Difference]: Start difference. First operand 805 states and 1228 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:09,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:09,850 INFO L93 Difference]: Finished difference Result 1588 states and 2427 transitions. [2022-01-10 08:25:09,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:09,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:09,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:09,852 INFO L225 Difference]: With dead ends: 1588 [2022-01-10 08:25:09,852 INFO L226 Difference]: Without dead ends: 805 [2022-01-10 08:25:09,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:09,854 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 824 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:09,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [845 Valid, 1244 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:09,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-01-10 08:25:09,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2022-01-10 08:25:09,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 742 states have (on average 1.5121293800539084) internal successors, (1122), 744 states have internal predecessors, (1122), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:25:09,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1221 transitions. [2022-01-10 08:25:09,873 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1221 transitions. Word has length 189 [2022-01-10 08:25:09,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:09,874 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 1221 transitions. [2022-01-10 08:25:09,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:09,874 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1221 transitions. [2022-01-10 08:25:09,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:09,874 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:09,874 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:09,885 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 08:25:10,083 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 08:25:10,083 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:10,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:10,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1573074424, now seen corresponding path program 1 times [2022-01-10 08:25:10,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:10,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442706680] [2022-01-10 08:25:10,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:10,084 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:10,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:10,085 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 08:25:10,086 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 08:25:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:10,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:10,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:10,464 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 08:25:10,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:10,464 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:10,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442706680] [2022-01-10 08:25:10,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442706680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:10,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:10,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:10,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958364643] [2022-01-10 08:25:10,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:10,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:10,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:10,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:10,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:10,465 INFO L87 Difference]: Start difference. First operand 805 states and 1221 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:10,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:10,789 INFO L93 Difference]: Finished difference Result 1588 states and 2413 transitions. [2022-01-10 08:25:10,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:10,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:10,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:10,791 INFO L225 Difference]: With dead ends: 1588 [2022-01-10 08:25:10,791 INFO L226 Difference]: Without dead ends: 805 [2022-01-10 08:25:10,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:10,792 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 818 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:10,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [839 Valid, 1237 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:10,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-01-10 08:25:10,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2022-01-10 08:25:10,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 742 states have (on average 1.5026954177897573) internal successors, (1115), 744 states have internal predecessors, (1115), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:25:10,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1214 transitions. [2022-01-10 08:25:10,814 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1214 transitions. Word has length 189 [2022-01-10 08:25:10,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:10,814 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 1214 transitions. [2022-01-10 08:25:10,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:10,814 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1214 transitions. [2022-01-10 08:25:10,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:10,815 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:10,815 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:10,825 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 08:25:11,023 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 08:25:11,023 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:11,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:11,024 INFO L85 PathProgramCache]: Analyzing trace with hash 463134332, now seen corresponding path program 1 times [2022-01-10 08:25:11,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:11,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032523699] [2022-01-10 08:25:11,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:11,024 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:11,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:11,025 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 08:25:11,027 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 08:25:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:11,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:11,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:11,387 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 08:25:11,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:11,388 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:11,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032523699] [2022-01-10 08:25:11,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032523699] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:11,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:11,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:11,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220941524] [2022-01-10 08:25:11,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:11,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:11,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:11,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:11,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:11,389 INFO L87 Difference]: Start difference. First operand 805 states and 1214 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:11,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:11,710 INFO L93 Difference]: Finished difference Result 1588 states and 2399 transitions. [2022-01-10 08:25:11,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:11,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:11,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:11,712 INFO L225 Difference]: With dead ends: 1588 [2022-01-10 08:25:11,712 INFO L226 Difference]: Without dead ends: 805 [2022-01-10 08:25:11,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:11,713 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 812 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:11,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [833 Valid, 1230 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:11,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-01-10 08:25:11,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2022-01-10 08:25:11,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 742 states have (on average 1.4932614555256065) internal successors, (1108), 744 states have internal predecessors, (1108), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:25:11,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1207 transitions. [2022-01-10 08:25:11,769 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1207 transitions. Word has length 189 [2022-01-10 08:25:11,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:11,769 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 1207 transitions. [2022-01-10 08:25:11,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:11,769 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1207 transitions. [2022-01-10 08:25:11,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:11,770 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:11,770 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:11,778 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 08:25:11,974 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 08:25:11,974 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:11,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:11,975 INFO L85 PathProgramCache]: Analyzing trace with hash -542501512, now seen corresponding path program 1 times [2022-01-10 08:25:11,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:11,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818017702] [2022-01-10 08:25:11,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:11,975 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:11,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:11,976 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 08:25:11,977 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 08:25:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:12,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:12,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:12,363 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 08:25:12,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:12,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:12,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818017702] [2022-01-10 08:25:12,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818017702] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:12,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:12,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:12,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722215063] [2022-01-10 08:25:12,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:12,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:12,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:12,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:12,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:12,364 INFO L87 Difference]: Start difference. First operand 805 states and 1207 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:12,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:12,685 INFO L93 Difference]: Finished difference Result 1588 states and 2385 transitions. [2022-01-10 08:25:12,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:12,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:12,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:12,687 INFO L225 Difference]: With dead ends: 1588 [2022-01-10 08:25:12,687 INFO L226 Difference]: Without dead ends: 805 [2022-01-10 08:25:12,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:12,688 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 806 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:12,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 1223 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:12,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-01-10 08:25:12,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2022-01-10 08:25:12,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 742 states have (on average 1.4838274932614555) internal successors, (1101), 744 states have internal predecessors, (1101), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:25:12,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1200 transitions. [2022-01-10 08:25:12,710 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1200 transitions. Word has length 189 [2022-01-10 08:25:12,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:12,711 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 1200 transitions. [2022-01-10 08:25:12,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:12,711 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1200 transitions. [2022-01-10 08:25:12,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:12,711 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:12,711 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:12,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:12,919 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 08:25:12,920 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:12,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:12,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1503268604, now seen corresponding path program 1 times [2022-01-10 08:25:12,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:12,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416336866] [2022-01-10 08:25:12,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:12,921 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:12,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:12,922 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 08:25:12,923 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 08:25:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:13,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:13,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:13,301 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 08:25:13,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:13,301 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:13,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416336866] [2022-01-10 08:25:13,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416336866] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:13,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:13,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:13,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943460030] [2022-01-10 08:25:13,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:13,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:13,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:13,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:13,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:13,302 INFO L87 Difference]: Start difference. First operand 805 states and 1200 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:13,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:13,766 INFO L93 Difference]: Finished difference Result 1794 states and 2691 transitions. [2022-01-10 08:25:13,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:13,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:13,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:13,768 INFO L225 Difference]: With dead ends: 1794 [2022-01-10 08:25:13,768 INFO L226 Difference]: Without dead ends: 1011 [2022-01-10 08:25:13,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:13,770 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 935 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:13,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [956 Valid, 1215 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:13,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2022-01-10 08:25:13,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1011. [2022-01-10 08:25:13,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 942 states have (on average 1.4607218683651804) internal successors, (1376), 944 states have internal predecessors, (1376), 51 states have call successors, (51), 16 states have call predecessors, (51), 17 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 08:25:13,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1479 transitions. [2022-01-10 08:25:13,803 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1479 transitions. Word has length 189 [2022-01-10 08:25:13,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:13,803 INFO L470 AbstractCegarLoop]: Abstraction has 1011 states and 1479 transitions. [2022-01-10 08:25:13,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:13,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1479 transitions. [2022-01-10 08:25:13,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:13,803 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:13,804 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:13,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-01-10 08:25:14,011 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 08:25:14,012 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:14,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:14,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1345117826, now seen corresponding path program 1 times [2022-01-10 08:25:14,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:14,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48817785] [2022-01-10 08:25:14,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:14,013 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:14,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:14,013 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 08:25:14,015 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 08:25:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:14,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:14,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:14,388 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 08:25:14,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:14,389 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:14,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48817785] [2022-01-10 08:25:14,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48817785] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:14,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:14,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:14,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187063023] [2022-01-10 08:25:14,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:14,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:14,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:14,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:14,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:14,390 INFO L87 Difference]: Start difference. First operand 1011 states and 1479 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:14,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:14,869 INFO L93 Difference]: Finished difference Result 2206 states and 3249 transitions. [2022-01-10 08:25:14,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:14,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:14,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:14,871 INFO L225 Difference]: With dead ends: 2206 [2022-01-10 08:25:14,871 INFO L226 Difference]: Without dead ends: 1217 [2022-01-10 08:25:14,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:14,873 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 928 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:14,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [949 Valid, 1209 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:14,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2022-01-10 08:25:14,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1217. [2022-01-10 08:25:14,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1142 states have (on average 1.4422066549912433) internal successors, (1647), 1144 states have internal predecessors, (1647), 53 states have call successors, (53), 20 states have call predecessors, (53), 21 states have return successors, (54), 53 states have call predecessors, (54), 53 states have call successors, (54) [2022-01-10 08:25:14,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1754 transitions. [2022-01-10 08:25:14,915 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1754 transitions. Word has length 189 [2022-01-10 08:25:14,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:14,915 INFO L470 AbstractCegarLoop]: Abstraction has 1217 states and 1754 transitions. [2022-01-10 08:25:14,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:14,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1754 transitions. [2022-01-10 08:25:14,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:14,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:14,916 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:14,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:15,124 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 08:25:15,124 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:15,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:15,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1639180795, now seen corresponding path program 1 times [2022-01-10 08:25:15,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:15,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983100276] [2022-01-10 08:25:15,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:15,125 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:15,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:15,126 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 08:25:15,131 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 08:25:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:15,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:15,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:15,455 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 08:25:15,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:15,456 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:15,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983100276] [2022-01-10 08:25:15,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983100276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:15,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:15,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:15,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635155359] [2022-01-10 08:25:15,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:15,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:15,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:15,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:15,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:15,457 INFO L87 Difference]: Start difference. First operand 1217 states and 1754 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:15,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:15,854 INFO L93 Difference]: Finished difference Result 2618 states and 3799 transitions. [2022-01-10 08:25:15,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:15,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:15,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:15,857 INFO L225 Difference]: With dead ends: 2618 [2022-01-10 08:25:15,857 INFO L226 Difference]: Without dead ends: 1423 [2022-01-10 08:25:15,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:15,859 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 922 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:15,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 1200 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:15,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2022-01-10 08:25:15,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1423. [2022-01-10 08:25:15,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1342 states have (on average 1.4262295081967213) internal successors, (1914), 1344 states have internal predecessors, (1914), 55 states have call successors, (55), 24 states have call predecessors, (55), 25 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2022-01-10 08:25:15,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 2025 transitions. [2022-01-10 08:25:15,969 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 2025 transitions. Word has length 189 [2022-01-10 08:25:15,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:15,969 INFO L470 AbstractCegarLoop]: Abstraction has 1423 states and 2025 transitions. [2022-01-10 08:25:15,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:15,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 2025 transitions. [2022-01-10 08:25:15,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:15,969 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:15,969 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:15,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:16,178 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 08:25:16,178 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:16,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:16,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1568324225, now seen corresponding path program 1 times [2022-01-10 08:25:16,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:16,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16921897] [2022-01-10 08:25:16,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:16,179 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:16,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:16,181 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 08:25:16,181 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 08:25:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:16,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:16,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:16,557 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 08:25:16,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:16,557 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:16,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16921897] [2022-01-10 08:25:16,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16921897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:16,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:16,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:16,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337181339] [2022-01-10 08:25:16,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:16,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:16,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:16,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:16,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:16,559 INFO L87 Difference]: Start difference. First operand 1423 states and 2025 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:17,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:17,058 INFO L93 Difference]: Finished difference Result 3030 states and 4341 transitions. [2022-01-10 08:25:17,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:17,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:17,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:17,061 INFO L225 Difference]: With dead ends: 3030 [2022-01-10 08:25:17,061 INFO L226 Difference]: Without dead ends: 1629 [2022-01-10 08:25:17,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:17,063 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 915 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:17,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [936 Valid, 1193 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:17,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2022-01-10 08:25:17,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1629. [2022-01-10 08:25:17,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1542 states have (on average 1.4118028534370948) internal successors, (2177), 1544 states have internal predecessors, (2177), 57 states have call successors, (57), 28 states have call predecessors, (57), 29 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2022-01-10 08:25:17,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2292 transitions. [2022-01-10 08:25:17,120 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2292 transitions. Word has length 189 [2022-01-10 08:25:17,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:17,120 INFO L470 AbstractCegarLoop]: Abstraction has 1629 states and 2292 transitions. [2022-01-10 08:25:17,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:17,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2292 transitions. [2022-01-10 08:25:17,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:17,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:17,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:17,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:17,329 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 08:25:17,329 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:17,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:17,330 INFO L85 PathProgramCache]: Analyzing trace with hash 209163900, now seen corresponding path program 1 times [2022-01-10 08:25:17,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:17,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670261744] [2022-01-10 08:25:17,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:17,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:17,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:17,331 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 08:25:17,332 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 08:25:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:17,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:17,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:17,681 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 08:25:17,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:17,681 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:17,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670261744] [2022-01-10 08:25:17,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670261744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:17,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:17,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:17,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246487546] [2022-01-10 08:25:17,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:17,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:17,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:17,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:17,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:17,688 INFO L87 Difference]: Start difference. First operand 1629 states and 2292 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:18,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:18,200 INFO L93 Difference]: Finished difference Result 3442 states and 4875 transitions. [2022-01-10 08:25:18,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:18,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:18,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:18,203 INFO L225 Difference]: With dead ends: 3442 [2022-01-10 08:25:18,203 INFO L226 Difference]: Without dead ends: 1835 [2022-01-10 08:25:18,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:18,205 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 908 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:18,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [929 Valid, 1186 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:18,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2022-01-10 08:25:18,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1835. [2022-01-10 08:25:18,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1835 states, 1742 states have (on average 1.3983926521239953) internal successors, (2436), 1744 states have internal predecessors, (2436), 59 states have call successors, (59), 32 states have call predecessors, (59), 33 states have return successors, (60), 59 states have call predecessors, (60), 59 states have call successors, (60) [2022-01-10 08:25:18,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1835 states to 1835 states and 2555 transitions. [2022-01-10 08:25:18,279 INFO L78 Accepts]: Start accepts. Automaton has 1835 states and 2555 transitions. Word has length 189 [2022-01-10 08:25:18,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:18,279 INFO L470 AbstractCegarLoop]: Abstraction has 1835 states and 2555 transitions. [2022-01-10 08:25:18,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:18,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1835 states and 2555 transitions. [2022-01-10 08:25:18,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:18,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:18,280 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:18,290 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 08:25:18,488 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 08:25:18,489 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:18,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:18,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1733081919, now seen corresponding path program 1 times [2022-01-10 08:25:18,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:18,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426777958] [2022-01-10 08:25:18,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:18,489 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:18,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:18,491 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 08:25:18,493 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 08:25:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:18,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:18,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:18,858 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 08:25:18,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:18,858 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:18,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426777958] [2022-01-10 08:25:18,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426777958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:18,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:18,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:18,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800779597] [2022-01-10 08:25:18,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:18,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:18,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:18,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:18,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:18,859 INFO L87 Difference]: Start difference. First operand 1835 states and 2555 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:19,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:19,361 INFO L93 Difference]: Finished difference Result 3854 states and 5401 transitions. [2022-01-10 08:25:19,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:19,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:19,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:19,365 INFO L225 Difference]: With dead ends: 3854 [2022-01-10 08:25:19,365 INFO L226 Difference]: Without dead ends: 2041 [2022-01-10 08:25:19,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:19,368 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 901 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:19,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [922 Valid, 1179 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:19,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2041 states. [2022-01-10 08:25:19,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2041 to 2041. [2022-01-10 08:25:19,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 1942 states have (on average 1.385684860968074) internal successors, (2691), 1944 states have internal predecessors, (2691), 61 states have call successors, (61), 36 states have call predecessors, (61), 37 states have return successors, (62), 61 states have call predecessors, (62), 61 states have call successors, (62) [2022-01-10 08:25:19,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2814 transitions. [2022-01-10 08:25:19,486 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2814 transitions. Word has length 189 [2022-01-10 08:25:19,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:19,486 INFO L470 AbstractCegarLoop]: Abstraction has 2041 states and 2814 transitions. [2022-01-10 08:25:19,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:19,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2814 transitions. [2022-01-10 08:25:19,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:19,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:19,488 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:19,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:19,696 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 08:25:19,696 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:19,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:19,696 INFO L85 PathProgramCache]: Analyzing trace with hash 729233341, now seen corresponding path program 1 times [2022-01-10 08:25:19,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:19,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197255440] [2022-01-10 08:25:19,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:19,697 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:19,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:19,698 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 08:25:19,701 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 08:25:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:19,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:19,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:20,065 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 08:25:20,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:20,066 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:20,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197255440] [2022-01-10 08:25:20,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197255440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:20,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:20,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:20,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109752013] [2022-01-10 08:25:20,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:20,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:20,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:20,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:20,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:20,067 INFO L87 Difference]: Start difference. First operand 2041 states and 2814 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:20,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:20,644 INFO L93 Difference]: Finished difference Result 4266 states and 5919 transitions. [2022-01-10 08:25:20,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:20,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:20,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:20,649 INFO L225 Difference]: With dead ends: 4266 [2022-01-10 08:25:20,649 INFO L226 Difference]: Without dead ends: 2247 [2022-01-10 08:25:20,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:20,652 INFO L933 BasicCegarLoop]: 550 mSDtfsCounter, 894 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:20,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 1172 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:20,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2247 states. [2022-01-10 08:25:20,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2247 to 2247. [2022-01-10 08:25:20,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2142 states have (on average 1.373482726423903) internal successors, (2942), 2144 states have internal predecessors, (2942), 63 states have call successors, (63), 40 states have call predecessors, (63), 41 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2022-01-10 08:25:20,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3069 transitions. [2022-01-10 08:25:20,792 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3069 transitions. Word has length 189 [2022-01-10 08:25:20,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:20,792 INFO L470 AbstractCegarLoop]: Abstraction has 2247 states and 3069 transitions. [2022-01-10 08:25:20,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:20,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3069 transitions. [2022-01-10 08:25:20,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:20,793 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:20,793 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:25:20,801 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 08:25:21,001 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 08:25:21,002 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:21,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:21,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1606938494, now seen corresponding path program 1 times [2022-01-10 08:25:21,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:21,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890020553] [2022-01-10 08:25:21,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:21,003 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:21,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:21,004 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 08:25:21,005 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 08:25:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:21,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:21,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:21,425 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 08:25:21,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:21,425 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:21,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890020553] [2022-01-10 08:25:21,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890020553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:21,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:21,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:21,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894744111] [2022-01-10 08:25:21,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:21,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:21,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:21,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:21,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:21,433 INFO L87 Difference]: Start difference. First operand 2247 states and 3069 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:22,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:22,044 INFO L93 Difference]: Finished difference Result 4678 states and 6429 transitions. [2022-01-10 08:25:22,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:22,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:22,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:22,049 INFO L225 Difference]: With dead ends: 4678 [2022-01-10 08:25:22,049 INFO L226 Difference]: Without dead ends: 2453 [2022-01-10 08:25:22,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:22,052 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 886 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:22,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 1165 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:25:22,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2453 states. [2022-01-10 08:25:22,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2453 to 2453. [2022-01-10 08:25:22,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2453 states, 2342 states have (on average 1.3616567036720753) internal successors, (3189), 2344 states have internal predecessors, (3189), 65 states have call successors, (65), 44 states have call predecessors, (65), 45 states have return successors, (66), 65 states have call predecessors, (66), 65 states have call successors, (66) [2022-01-10 08:25:22,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 3320 transitions. [2022-01-10 08:25:22,170 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 3320 transitions. Word has length 189 [2022-01-10 08:25:22,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:22,170 INFO L470 AbstractCegarLoop]: Abstraction has 2453 states and 3320 transitions. [2022-01-10 08:25:22,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:22,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 3320 transitions. [2022-01-10 08:25:22,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:22,171 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:22,171 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:22,179 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 08:25:22,379 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 08:25:22,379 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:22,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:22,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1897396677, now seen corresponding path program 1 times [2022-01-10 08:25:22,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:22,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480375927] [2022-01-10 08:25:22,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:22,380 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:22,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:22,382 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 08:25:22,382 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 08:25:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:22,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:22,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:22,761 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 08:25:22,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:22,762 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:22,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480375927] [2022-01-10 08:25:22,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480375927] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:22,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:22,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:22,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851363797] [2022-01-10 08:25:22,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:22,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:22,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:22,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:22,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:22,763 INFO L87 Difference]: Start difference. First operand 2453 states and 3320 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:23,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:23,406 INFO L93 Difference]: Finished difference Result 5090 states and 6931 transitions. [2022-01-10 08:25:23,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:23,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:23,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:23,411 INFO L225 Difference]: With dead ends: 5090 [2022-01-10 08:25:23,411 INFO L226 Difference]: Without dead ends: 2659 [2022-01-10 08:25:23,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:23,416 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 879 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:23,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [900 Valid, 1158 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:25:23,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2022-01-10 08:25:23,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 2659. [2022-01-10 08:25:23,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2659 states, 2542 states have (on average 1.3501180173092053) internal successors, (3432), 2544 states have internal predecessors, (3432), 67 states have call successors, (67), 48 states have call predecessors, (67), 49 states have return successors, (68), 67 states have call predecessors, (68), 67 states have call successors, (68) [2022-01-10 08:25:23,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2659 states to 2659 states and 3567 transitions. [2022-01-10 08:25:23,549 INFO L78 Accepts]: Start accepts. Automaton has 2659 states and 3567 transitions. Word has length 189 [2022-01-10 08:25:23,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:23,550 INFO L470 AbstractCegarLoop]: Abstraction has 2659 states and 3567 transitions. [2022-01-10 08:25:23,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:23,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2659 states and 3567 transitions. [2022-01-10 08:25:23,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:23,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:23,551 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:23,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:23,760 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 08:25:23,761 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:23,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:23,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1222953665, now seen corresponding path program 1 times [2022-01-10 08:25:23,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:23,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098931453] [2022-01-10 08:25:23,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:23,761 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:23,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:23,762 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 08:25:23,764 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 08:25:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:23,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:23,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:24,142 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 08:25:24,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:24,142 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:24,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098931453] [2022-01-10 08:25:24,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098931453] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:24,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:24,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:24,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697779001] [2022-01-10 08:25:24,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:24,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:24,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:24,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:24,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:24,152 INFO L87 Difference]: Start difference. First operand 2659 states and 3567 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:24,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:24,732 INFO L93 Difference]: Finished difference Result 5502 states and 7425 transitions. [2022-01-10 08:25:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:24,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:24,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:24,737 INFO L225 Difference]: With dead ends: 5502 [2022-01-10 08:25:24,737 INFO L226 Difference]: Without dead ends: 2865 [2022-01-10 08:25:24,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:24,741 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 872 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:24,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [893 Valid, 1151 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:24,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2022-01-10 08:25:24,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2865. [2022-01-10 08:25:24,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 2742 states have (on average 1.338803792851933) internal successors, (3671), 2744 states have internal predecessors, (3671), 69 states have call successors, (69), 52 states have call predecessors, (69), 53 states have return successors, (70), 69 states have call predecessors, (70), 69 states have call successors, (70) [2022-01-10 08:25:24,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 3810 transitions. [2022-01-10 08:25:24,947 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 3810 transitions. Word has length 189 [2022-01-10 08:25:24,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:24,947 INFO L470 AbstractCegarLoop]: Abstraction has 2865 states and 3810 transitions. [2022-01-10 08:25:24,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:24,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 3810 transitions. [2022-01-10 08:25:24,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:24,948 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:24,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:24,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:25,153 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 08:25:25,153 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:25,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:25,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1393522822, now seen corresponding path program 1 times [2022-01-10 08:25:25,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:25,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029266100] [2022-01-10 08:25:25,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:25,154 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:25,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:25,156 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 08:25:25,156 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 08:25:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:25,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:25,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:25,493 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 08:25:25,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:25,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:25,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029266100] [2022-01-10 08:25:25,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029266100] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:25,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:25,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:25,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42157914] [2022-01-10 08:25:25,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:25,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:25,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:25,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:25,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:25,496 INFO L87 Difference]: Start difference. First operand 2865 states and 3810 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:26,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:26,139 INFO L93 Difference]: Finished difference Result 5914 states and 7911 transitions. [2022-01-10 08:25:26,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:26,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:26,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:26,144 INFO L225 Difference]: With dead ends: 5914 [2022-01-10 08:25:26,144 INFO L226 Difference]: Without dead ends: 3071 [2022-01-10 08:25:26,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:26,147 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 865 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:26,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [886 Valid, 1144 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:26,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3071 states. [2022-01-10 08:25:26,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3071 to 3071. [2022-01-10 08:25:26,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3071 states, 2942 states have (on average 1.327668252889191) internal successors, (3906), 2944 states have internal predecessors, (3906), 71 states have call successors, (71), 56 states have call predecessors, (71), 57 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2022-01-10 08:25:26,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3071 states to 3071 states and 4049 transitions. [2022-01-10 08:25:26,307 INFO L78 Accepts]: Start accepts. Automaton has 3071 states and 4049 transitions. Word has length 189 [2022-01-10 08:25:26,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:26,307 INFO L470 AbstractCegarLoop]: Abstraction has 3071 states and 4049 transitions. [2022-01-10 08:25:26,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:26,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3071 states and 4049 transitions. [2022-01-10 08:25:26,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:26,308 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:26,308 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:26,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:26,516 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 08:25:26,516 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:26,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:26,517 INFO L85 PathProgramCache]: Analyzing trace with hash -134485117, now seen corresponding path program 1 times [2022-01-10 08:25:26,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:26,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986967969] [2022-01-10 08:25:26,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:26,517 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:26,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:26,518 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 08:25:26,520 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 08:25:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:26,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:26,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:26,901 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 08:25:26,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:26,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:26,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986967969] [2022-01-10 08:25:26,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986967969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:26,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:26,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:26,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819080751] [2022-01-10 08:25:26,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:26,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:26,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:26,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:26,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:26,903 INFO L87 Difference]: Start difference. First operand 3071 states and 4049 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:27,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:27,679 INFO L93 Difference]: Finished difference Result 6326 states and 8389 transitions. [2022-01-10 08:25:27,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:27,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:27,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:27,685 INFO L225 Difference]: With dead ends: 6326 [2022-01-10 08:25:27,686 INFO L226 Difference]: Without dead ends: 3277 [2022-01-10 08:25:27,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:27,690 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 858 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:27,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 1137 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 08:25:27,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2022-01-10 08:25:27,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 3277. [2022-01-10 08:25:27,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3277 states, 3142 states have (on average 1.3166772756206238) internal successors, (4137), 3144 states have internal predecessors, (4137), 73 states have call successors, (73), 60 states have call predecessors, (73), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2022-01-10 08:25:27,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3277 states to 3277 states and 4284 transitions. [2022-01-10 08:25:27,871 INFO L78 Accepts]: Start accepts. Automaton has 3277 states and 4284 transitions. Word has length 189 [2022-01-10 08:25:27,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:27,871 INFO L470 AbstractCegarLoop]: Abstraction has 3277 states and 4284 transitions. [2022-01-10 08:25:27,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:27,872 INFO L276 IsEmpty]: Start isEmpty. Operand 3277 states and 4284 transitions. [2022-01-10 08:25:27,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:27,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:27,872 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:27,881 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 08:25:28,081 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 08:25:28,081 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:28,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:28,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1499653113, now seen corresponding path program 1 times [2022-01-10 08:25:28,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:28,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812598391] [2022-01-10 08:25:28,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:28,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:28,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:28,083 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 08:25:28,086 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 08:25:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:28,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:28,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:28,484 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 08:25:28,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:28,484 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:28,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812598391] [2022-01-10 08:25:28,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812598391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:28,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:28,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:28,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79183326] [2022-01-10 08:25:28,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:28,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:28,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:28,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:28,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:28,485 INFO L87 Difference]: Start difference. First operand 3277 states and 4284 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:29,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:29,129 INFO L93 Difference]: Finished difference Result 6738 states and 8859 transitions. [2022-01-10 08:25:29,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:29,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:29,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:29,135 INFO L225 Difference]: With dead ends: 6738 [2022-01-10 08:25:29,135 INFO L226 Difference]: Without dead ends: 3483 [2022-01-10 08:25:29,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:29,139 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 851 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:29,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [872 Valid, 1130 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:29,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3483 states. [2022-01-10 08:25:29,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3483 to 3483. [2022-01-10 08:25:29,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3483 states, 3342 states have (on average 1.305804907241173) internal successors, (4364), 3344 states have internal predecessors, (4364), 75 states have call successors, (75), 64 states have call predecessors, (75), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:29,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3483 states to 3483 states and 4515 transitions. [2022-01-10 08:25:29,326 INFO L78 Accepts]: Start accepts. Automaton has 3483 states and 4515 transitions. Word has length 189 [2022-01-10 08:25:29,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:29,327 INFO L470 AbstractCegarLoop]: Abstraction has 3483 states and 4515 transitions. [2022-01-10 08:25:29,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:29,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3483 states and 4515 transitions. [2022-01-10 08:25:29,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:29,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:29,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:29,342 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 08:25:29,536 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 08:25:29,536 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:29,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:29,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1266346108, now seen corresponding path program 1 times [2022-01-10 08:25:29,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:29,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509245578] [2022-01-10 08:25:29,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:29,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:29,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:29,538 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 08:25:29,541 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 08:25:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:29,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:29,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:29,903 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 08:25:29,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:29,904 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:29,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509245578] [2022-01-10 08:25:29,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509245578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:29,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:29,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:29,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126144993] [2022-01-10 08:25:29,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:29,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:29,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:29,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:29,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:29,905 INFO L87 Difference]: Start difference. First operand 3483 states and 4515 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:30,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:30,155 INFO L93 Difference]: Finished difference Result 7321 states and 9540 transitions. [2022-01-10 08:25:30,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:30,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:30,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:30,162 INFO L225 Difference]: With dead ends: 7321 [2022-01-10 08:25:30,162 INFO L226 Difference]: Without dead ends: 3861 [2022-01-10 08:25:30,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 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 08:25:30,167 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 518 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 2439 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 08:25:30,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [518 Valid, 2439 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:30,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3861 states. [2022-01-10 08:25:30,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3861 to 3489. [2022-01-10 08:25:30,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3489 states, 3348 states have (on average 1.2974910394265233) internal successors, (4344), 3350 states have internal predecessors, (4344), 75 states have call successors, (75), 64 states have call predecessors, (75), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:30,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3489 states to 3489 states and 4495 transitions. [2022-01-10 08:25:30,372 INFO L78 Accepts]: Start accepts. Automaton has 3489 states and 4495 transitions. Word has length 189 [2022-01-10 08:25:30,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:30,372 INFO L470 AbstractCegarLoop]: Abstraction has 3489 states and 4495 transitions. [2022-01-10 08:25:30,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:30,372 INFO L276 IsEmpty]: Start isEmpty. Operand 3489 states and 4495 transitions. [2022-01-10 08:25:30,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:30,373 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:30,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:30,384 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 08:25:30,584 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 08:25:30,584 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:30,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:30,585 INFO L85 PathProgramCache]: Analyzing trace with hash 2080569222, now seen corresponding path program 1 times [2022-01-10 08:25:30,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:30,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748010535] [2022-01-10 08:25:30,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:30,585 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:30,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:30,586 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 08:25:30,587 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 08:25:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:30,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:30,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:31,034 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 08:25:31,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:31,034 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:31,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748010535] [2022-01-10 08:25:31,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748010535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:31,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:31,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:31,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373401489] [2022-01-10 08:25:31,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:31,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:31,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:31,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:31,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:31,036 INFO L87 Difference]: Start difference. First operand 3489 states and 4495 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:31,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:31,340 INFO L93 Difference]: Finished difference Result 7305 states and 9464 transitions. [2022-01-10 08:25:31,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:31,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:31,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:31,346 INFO L225 Difference]: With dead ends: 7305 [2022-01-10 08:25:31,347 INFO L226 Difference]: Without dead ends: 3839 [2022-01-10 08:25:31,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 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 08:25:31,350 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 479 mSDsluCounter, 1870 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 2432 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 08:25:31,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 2432 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:31,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3839 states. [2022-01-10 08:25:31,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3839 to 3495. [2022-01-10 08:25:31,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3495 states, 3354 states have (on average 1.2892069171138938) internal successors, (4324), 3356 states have internal predecessors, (4324), 75 states have call successors, (75), 64 states have call predecessors, (75), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:31,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 4475 transitions. [2022-01-10 08:25:31,584 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 4475 transitions. Word has length 189 [2022-01-10 08:25:31,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:31,584 INFO L470 AbstractCegarLoop]: Abstraction has 3495 states and 4475 transitions. [2022-01-10 08:25:31,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:31,585 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 4475 transitions. [2022-01-10 08:25:31,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:31,585 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:31,585 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:31,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:31,794 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 08:25:31,794 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:31,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:31,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1352564472, now seen corresponding path program 1 times [2022-01-10 08:25:31,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:31,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583320371] [2022-01-10 08:25:31,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:31,796 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:31,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:31,797 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 08:25:31,797 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 08:25:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:31,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:31,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:32,110 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 08:25:32,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:32,110 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:32,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [583320371] [2022-01-10 08:25:32,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [583320371] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:32,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:32,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:32,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36082155] [2022-01-10 08:25:32,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:32,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:32,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:32,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:32,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:32,111 INFO L87 Difference]: Start difference. First operand 3495 states and 4475 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:32,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:32,400 INFO L93 Difference]: Finished difference Result 7289 states and 9388 transitions. [2022-01-10 08:25:32,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:32,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:32,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:32,406 INFO L225 Difference]: With dead ends: 7289 [2022-01-10 08:25:32,406 INFO L226 Difference]: Without dead ends: 3817 [2022-01-10 08:25:32,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 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 08:25:32,411 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 440 mSDsluCounter, 1849 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 2409 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 08:25:32,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 2409 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:32,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3817 states. [2022-01-10 08:25:32,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3817 to 3501. [2022-01-10 08:25:32,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3501 states, 3360 states have (on average 1.2809523809523808) internal successors, (4304), 3362 states have internal predecessors, (4304), 75 states have call successors, (75), 64 states have call predecessors, (75), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:32,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 4455 transitions. [2022-01-10 08:25:32,644 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 4455 transitions. Word has length 189 [2022-01-10 08:25:32,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:32,644 INFO L470 AbstractCegarLoop]: Abstraction has 3501 states and 4455 transitions. [2022-01-10 08:25:32,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:32,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 4455 transitions. [2022-01-10 08:25:32,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:32,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:32,645 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:32,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:32,853 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 08:25:32,853 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:32,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:32,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1220400138, now seen corresponding path program 1 times [2022-01-10 08:25:32,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:32,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680088264] [2022-01-10 08:25:32,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:32,854 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:32,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:32,855 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 08:25:32,855 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 08:25:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:33,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:33,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:33,235 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 08:25:33,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:33,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:33,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680088264] [2022-01-10 08:25:33,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680088264] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:33,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:33,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:33,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703299934] [2022-01-10 08:25:33,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:33,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:33,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:33,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:33,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:33,237 INFO L87 Difference]: Start difference. First operand 3501 states and 4455 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:33,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:33,526 INFO L93 Difference]: Finished difference Result 7273 states and 9312 transitions. [2022-01-10 08:25:33,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:33,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:33,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:33,532 INFO L225 Difference]: With dead ends: 7273 [2022-01-10 08:25:33,533 INFO L226 Difference]: Without dead ends: 3795 [2022-01-10 08:25:33,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 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 08:25:33,536 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 401 mSDsluCounter, 1834 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 2394 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 08:25:33,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 2394 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:33,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3795 states. [2022-01-10 08:25:33,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3795 to 3507. [2022-01-10 08:25:33,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3507 states, 3366 states have (on average 1.2727272727272727) internal successors, (4284), 3368 states have internal predecessors, (4284), 75 states have call successors, (75), 64 states have call predecessors, (75), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:33,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 4435 transitions. [2022-01-10 08:25:33,787 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 4435 transitions. Word has length 189 [2022-01-10 08:25:33,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:33,787 INFO L470 AbstractCegarLoop]: Abstraction has 3507 states and 4435 transitions. [2022-01-10 08:25:33,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:33,787 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 4435 transitions. [2022-01-10 08:25:33,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:33,788 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:33,788 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:33,796 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 08:25:33,996 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 08:25:33,996 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:33,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:33,997 INFO L85 PathProgramCache]: Analyzing trace with hash -426962804, now seen corresponding path program 1 times [2022-01-10 08:25:33,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:33,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316850546] [2022-01-10 08:25:33,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:33,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:33,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:33,998 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 08:25:33,999 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 08:25:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:34,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:34,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:34,395 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 08:25:34,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:34,396 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:34,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316850546] [2022-01-10 08:25:34,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [316850546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:34,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:34,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:34,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754347035] [2022-01-10 08:25:34,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:34,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:34,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:34,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:34,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:34,397 INFO L87 Difference]: Start difference. First operand 3507 states and 4435 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:34,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:34,687 INFO L93 Difference]: Finished difference Result 7257 states and 9236 transitions. [2022-01-10 08:25:34,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:34,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:34,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:34,695 INFO L225 Difference]: With dead ends: 7257 [2022-01-10 08:25:34,695 INFO L226 Difference]: Without dead ends: 3773 [2022-01-10 08:25:34,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 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 08:25:34,702 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 362 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 2379 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 08:25:34,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 2379 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:34,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2022-01-10 08:25:34,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 3513. [2022-01-10 08:25:34,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 3372 states have (on average 1.2645314353499406) internal successors, (4264), 3374 states have internal predecessors, (4264), 75 states have call successors, (75), 64 states have call predecessors, (75), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:34,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 4415 transitions. [2022-01-10 08:25:34,969 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 4415 transitions. Word has length 189 [2022-01-10 08:25:34,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:34,970 INFO L470 AbstractCegarLoop]: Abstraction has 3513 states and 4415 transitions. [2022-01-10 08:25:34,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:34,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 4415 transitions. [2022-01-10 08:25:34,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:34,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:34,970 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:34,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:35,178 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 08:25:35,179 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:35,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:35,179 INFO L85 PathProgramCache]: Analyzing trace with hash -308521330, now seen corresponding path program 1 times [2022-01-10 08:25:35,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:35,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195482746] [2022-01-10 08:25:35,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:35,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:35,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:35,181 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 08:25:35,181 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 08:25:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:35,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:35,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:35,555 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 08:25:35,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:35,556 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:35,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195482746] [2022-01-10 08:25:35,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195482746] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:35,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:35,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:35,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315212169] [2022-01-10 08:25:35,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:35,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:35,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:35,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:35,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:35,557 INFO L87 Difference]: Start difference. First operand 3513 states and 4415 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:35,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:35,922 INFO L93 Difference]: Finished difference Result 7213 states and 9124 transitions. [2022-01-10 08:25:35,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:35,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:35,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:35,929 INFO L225 Difference]: With dead ends: 7213 [2022-01-10 08:25:35,930 INFO L226 Difference]: Without dead ends: 3723 [2022-01-10 08:25:35,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 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 08:25:35,934 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 284 mSDsluCounter, 1789 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2349 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 08:25:35,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2349 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:35,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3723 states. [2022-01-10 08:25:36,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3723 to 3519. [2022-01-10 08:25:36,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3519 states, 3378 states have (on average 1.256364712847839) internal successors, (4244), 3380 states have internal predecessors, (4244), 75 states have call successors, (75), 64 states have call predecessors, (75), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:36,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3519 states to 3519 states and 4395 transitions. [2022-01-10 08:25:36,222 INFO L78 Accepts]: Start accepts. Automaton has 3519 states and 4395 transitions. Word has length 189 [2022-01-10 08:25:36,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:36,222 INFO L470 AbstractCegarLoop]: Abstraction has 3519 states and 4395 transitions. [2022-01-10 08:25:36,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:36,223 INFO L276 IsEmpty]: Start isEmpty. Operand 3519 states and 4395 transitions. [2022-01-10 08:25:36,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:36,234 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:36,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:36,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:36,442 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 08:25:36,442 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:36,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:36,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1192030320, now seen corresponding path program 1 times [2022-01-10 08:25:36,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:36,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596283924] [2022-01-10 08:25:36,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:36,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:36,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:36,444 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 08:25:36,444 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 08:25:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:36,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:36,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:36,751 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 08:25:36,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:36,752 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:36,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596283924] [2022-01-10 08:25:36,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596283924] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:36,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:36,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:36,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135967139] [2022-01-10 08:25:36,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:36,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:36,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:36,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:36,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:36,756 INFO L87 Difference]: Start difference. First operand 3519 states and 4395 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:37,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:37,280 INFO L93 Difference]: Finished difference Result 9563 states and 12092 transitions. [2022-01-10 08:25:37,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:37,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:37,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:37,289 INFO L225 Difference]: With dead ends: 9563 [2022-01-10 08:25:37,289 INFO L226 Difference]: Without dead ends: 6067 [2022-01-10 08:25:37,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 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 08:25:37,293 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 250 mSDsluCounter, 1799 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 2359 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 08:25:37,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 2359 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:37,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6067 states. [2022-01-10 08:25:37,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6067 to 3603. [2022-01-10 08:25:37,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3603 states, 3462 states have (on average 1.2501444251877527) internal successors, (4328), 3464 states have internal predecessors, (4328), 75 states have call successors, (75), 64 states have call predecessors, (75), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3603 states to 3603 states and 4479 transitions. [2022-01-10 08:25:37,613 INFO L78 Accepts]: Start accepts. Automaton has 3603 states and 4479 transitions. Word has length 189 [2022-01-10 08:25:37,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:37,614 INFO L470 AbstractCegarLoop]: Abstraction has 3603 states and 4479 transitions. [2022-01-10 08:25:37,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:37,614 INFO L276 IsEmpty]: Start isEmpty. Operand 3603 states and 4479 transitions. [2022-01-10 08:25:37,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:37,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:37,614 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:37,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2022-01-10 08:25:37,819 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 08:25:37,819 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:37,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:37,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1778306542, now seen corresponding path program 1 times [2022-01-10 08:25:37,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:37,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815640120] [2022-01-10 08:25:37,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:37,820 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:37,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:37,821 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 08:25:37,822 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 08:25:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:37,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:37,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:38,124 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 08:25:38,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:38,124 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:38,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815640120] [2022-01-10 08:25:38,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815640120] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:38,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:38,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:38,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948253410] [2022-01-10 08:25:38,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:38,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:38,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:38,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:38,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:38,125 INFO L87 Difference]: Start difference. First operand 3603 states and 4479 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:38,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:38,468 INFO L93 Difference]: Finished difference Result 7337 states and 9176 transitions. [2022-01-10 08:25:38,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:38,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:38,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:38,474 INFO L225 Difference]: With dead ends: 7337 [2022-01-10 08:25:38,475 INFO L226 Difference]: Without dead ends: 3757 [2022-01-10 08:25:38,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 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 08:25:38,478 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 205 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 2314 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 08:25:38,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 2314 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:38,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2022-01-10 08:25:38,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 3609. [2022-01-10 08:25:38,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 3468 states have (on average 1.2422145328719723) internal successors, (4308), 3470 states have internal predecessors, (4308), 75 states have call successors, (75), 64 states have call predecessors, (75), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:38,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 4459 transitions. [2022-01-10 08:25:38,791 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 4459 transitions. Word has length 189 [2022-01-10 08:25:38,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:38,791 INFO L470 AbstractCegarLoop]: Abstraction has 3609 states and 4459 transitions. [2022-01-10 08:25:38,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:38,791 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 4459 transitions. [2022-01-10 08:25:38,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:38,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:38,792 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:38,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:38,992 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 08:25:38,992 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:38,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:38,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1458822676, now seen corresponding path program 1 times [2022-01-10 08:25:38,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:38,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818432474] [2022-01-10 08:25:38,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:38,993 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:38,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:38,994 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 08:25:38,995 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 08:25:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:39,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:39,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:39,311 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 08:25:39,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:39,311 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:39,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818432474] [2022-01-10 08:25:39,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818432474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:39,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:39,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:39,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42958571] [2022-01-10 08:25:39,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:39,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:39,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:39,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:39,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:39,312 INFO L87 Difference]: Start difference. First operand 3609 states and 4459 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:39,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:39,691 INFO L93 Difference]: Finished difference Result 7321 states and 9100 transitions. [2022-01-10 08:25:39,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:39,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:39,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:39,698 INFO L225 Difference]: With dead ends: 7321 [2022-01-10 08:25:39,698 INFO L226 Difference]: Without dead ends: 3735 [2022-01-10 08:25:39,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 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 08:25:39,702 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 166 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 2299 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 08:25:39,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 2299 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:39,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3735 states. [2022-01-10 08:25:40,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3735 to 3615. [2022-01-10 08:25:40,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3615 states, 3474 states have (on average 1.2343120322394934) internal successors, (4288), 3476 states have internal predecessors, (4288), 75 states have call successors, (75), 64 states have call predecessors, (75), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:40,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3615 states to 3615 states and 4439 transitions. [2022-01-10 08:25:40,023 INFO L78 Accepts]: Start accepts. Automaton has 3615 states and 4439 transitions. Word has length 189 [2022-01-10 08:25:40,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:40,023 INFO L470 AbstractCegarLoop]: Abstraction has 3615 states and 4439 transitions. [2022-01-10 08:25:40,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:40,023 INFO L276 IsEmpty]: Start isEmpty. Operand 3615 states and 4439 transitions. [2022-01-10 08:25:40,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:40,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:40,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:40,033 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 08:25:40,230 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 08:25:40,230 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:40,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:40,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1102040170, now seen corresponding path program 1 times [2022-01-10 08:25:40,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:40,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345978074] [2022-01-10 08:25:40,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:40,231 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:40,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:40,232 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 08:25:40,233 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 08:25:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:40,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:40,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:40,539 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 08:25:40,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:40,539 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:40,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345978074] [2022-01-10 08:25:40,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345978074] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:40,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:40,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:40,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962284849] [2022-01-10 08:25:40,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:40,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:40,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:40,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:40,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:40,547 INFO L87 Difference]: Start difference. First operand 3615 states and 4439 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:40,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:40,895 INFO L93 Difference]: Finished difference Result 7305 states and 9024 transitions. [2022-01-10 08:25:40,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:40,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:40,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:40,903 INFO L225 Difference]: With dead ends: 7305 [2022-01-10 08:25:40,903 INFO L226 Difference]: Without dead ends: 3713 [2022-01-10 08:25:40,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 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 08:25:40,909 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 127 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2284 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 08:25:40,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 2284 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:40,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2022-01-10 08:25:41,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3621. [2022-01-10 08:25:41,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3621 states, 3480 states have (on average 1.2264367816091954) internal successors, (4268), 3482 states have internal predecessors, (4268), 75 states have call successors, (75), 64 states have call predecessors, (75), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:41,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 4419 transitions. [2022-01-10 08:25:41,260 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 4419 transitions. Word has length 189 [2022-01-10 08:25:41,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:41,260 INFO L470 AbstractCegarLoop]: Abstraction has 3621 states and 4419 transitions. [2022-01-10 08:25:41,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:41,260 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 4419 transitions. [2022-01-10 08:25:41,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:41,269 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:41,269 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:41,278 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 08:25:41,478 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 08:25:41,478 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:41,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:41,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1594666344, now seen corresponding path program 1 times [2022-01-10 08:25:41,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:41,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295407640] [2022-01-10 08:25:41,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:41,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:41,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:41,480 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 08:25:41,481 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 08:25:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:41,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:41,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:41,877 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 08:25:41,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:41,877 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:41,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295407640] [2022-01-10 08:25:41,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295407640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:41,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:41,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:41,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985030415] [2022-01-10 08:25:41,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:41,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:41,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:41,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:41,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:41,880 INFO L87 Difference]: Start difference. First operand 3621 states and 4419 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:42,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:42,249 INFO L93 Difference]: Finished difference Result 7289 states and 8948 transitions. [2022-01-10 08:25:42,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:42,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:42,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:42,256 INFO L225 Difference]: With dead ends: 7289 [2022-01-10 08:25:42,256 INFO L226 Difference]: Without dead ends: 3691 [2022-01-10 08:25:42,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 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 08:25:42,260 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 88 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 2269 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 08:25:42,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 2269 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:42,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3691 states. [2022-01-10 08:25:42,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3691 to 3627. [2022-01-10 08:25:42,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3627 states, 3486 states have (on average 1.2185886402753872) internal successors, (4248), 3488 states have internal predecessors, (4248), 75 states have call successors, (75), 64 states have call predecessors, (75), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:42,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 4399 transitions. [2022-01-10 08:25:42,599 INFO L78 Accepts]: Start accepts. Automaton has 3627 states and 4399 transitions. Word has length 189 [2022-01-10 08:25:42,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:42,599 INFO L470 AbstractCegarLoop]: Abstraction has 3627 states and 4399 transitions. [2022-01-10 08:25:42,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:42,599 INFO L276 IsEmpty]: Start isEmpty. Operand 3627 states and 4399 transitions. [2022-01-10 08:25:42,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:42,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:42,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:42,608 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 08:25:42,808 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 08:25:42,808 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:42,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:42,808 INFO L85 PathProgramCache]: Analyzing trace with hash -2012062950, now seen corresponding path program 1 times [2022-01-10 08:25:42,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:42,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410334813] [2022-01-10 08:25:42,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:42,809 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:42,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:42,809 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 08:25:42,812 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 08:25:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:42,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:42,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:43,129 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 08:25:43,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:43,129 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:43,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410334813] [2022-01-10 08:25:43,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410334813] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:43,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:43,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:43,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650797623] [2022-01-10 08:25:43,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:43,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:43,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:43,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:43,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:43,130 INFO L87 Difference]: Start difference. First operand 3627 states and 4399 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:43,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:43,516 INFO L93 Difference]: Finished difference Result 7245 states and 8836 transitions. [2022-01-10 08:25:43,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:43,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:43,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:43,522 INFO L225 Difference]: With dead ends: 7245 [2022-01-10 08:25:43,523 INFO L226 Difference]: Without dead ends: 3641 [2022-01-10 08:25:43,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 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 08:25:43,526 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 10 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2239 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 08:25:43,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2239 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:43,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3641 states. [2022-01-10 08:25:43,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3641 to 3633. [2022-01-10 08:25:43,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3633 states, 3492 states have (on average 1.2107674684994272) internal successors, (4228), 3494 states have internal predecessors, (4228), 75 states have call successors, (75), 64 states have call predecessors, (75), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:43,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3633 states to 3633 states and 4379 transitions. [2022-01-10 08:25:43,859 INFO L78 Accepts]: Start accepts. Automaton has 3633 states and 4379 transitions. Word has length 189 [2022-01-10 08:25:43,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:43,859 INFO L470 AbstractCegarLoop]: Abstraction has 3633 states and 4379 transitions. [2022-01-10 08:25:43,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:43,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3633 states and 4379 transitions. [2022-01-10 08:25:43,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:43,860 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:43,860 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:43,867 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 08:25:44,063 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 08:25:44,063 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:44,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:44,064 INFO L85 PathProgramCache]: Analyzing trace with hash 254318236, now seen corresponding path program 1 times [2022-01-10 08:25:44,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:44,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534390992] [2022-01-10 08:25:44,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:44,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:44,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:44,065 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 08:25:44,065 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 08:25:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:44,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:25:44,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:44,474 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 08:25:44,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:44,474 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:44,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534390992] [2022-01-10 08:25:44,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534390992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:44,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:44,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:44,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540879711] [2022-01-10 08:25:44,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:44,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:44,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:44,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:44,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:44,475 INFO L87 Difference]: Start difference. First operand 3633 states and 4379 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:45,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:45,122 INFO L93 Difference]: Finished difference Result 7244 states and 8729 transitions. [2022-01-10 08:25:45,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:45,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:45,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:45,129 INFO L225 Difference]: With dead ends: 7244 [2022-01-10 08:25:45,129 INFO L226 Difference]: Without dead ends: 3633 [2022-01-10 08:25:45,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:45,132 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 628 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:45,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [648 Valid, 1125 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:45,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2022-01-10 08:25:45,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 3633. [2022-01-10 08:25:45,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3633 states, 3492 states have (on average 1.208762886597938) internal successors, (4221), 3494 states have internal predecessors, (4221), 75 states have call successors, (75), 64 states have call predecessors, (75), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:45,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3633 states to 3633 states and 4372 transitions. [2022-01-10 08:25:45,476 INFO L78 Accepts]: Start accepts. Automaton has 3633 states and 4372 transitions. Word has length 189 [2022-01-10 08:25:45,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:45,476 INFO L470 AbstractCegarLoop]: Abstraction has 3633 states and 4372 transitions. [2022-01-10 08:25:45,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:45,476 INFO L276 IsEmpty]: Start isEmpty. Operand 3633 states and 4372 transitions. [2022-01-10 08:25:45,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:45,477 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:45,477 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:45,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:45,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:45,685 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:45,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:45,685 INFO L85 PathProgramCache]: Analyzing trace with hash 502464730, now seen corresponding path program 1 times [2022-01-10 08:25:45,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:45,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770715872] [2022-01-10 08:25:45,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:45,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:45,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:45,687 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:45,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-01-10 08:25:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:45,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:25:45,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:46,122 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 08:25:46,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:46,122 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:46,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770715872] [2022-01-10 08:25:46,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770715872] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:46,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:46,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:46,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915713220] [2022-01-10 08:25:46,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:46,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:46,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:46,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:46,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:46,123 INFO L87 Difference]: Start difference. First operand 3633 states and 4372 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:46,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:46,780 INFO L93 Difference]: Finished difference Result 7244 states and 8715 transitions. [2022-01-10 08:25:46,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:46,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:46,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:46,786 INFO L225 Difference]: With dead ends: 7244 [2022-01-10 08:25:46,786 INFO L226 Difference]: Without dead ends: 3633 [2022-01-10 08:25:46,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 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 08:25:46,790 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 615 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:46,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 1118 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:46,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2022-01-10 08:25:47,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 3633. [2022-01-10 08:25:47,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3633 states, 3492 states have (on average 1.206758304696449) internal successors, (4214), 3494 states have internal predecessors, (4214), 75 states have call successors, (75), 64 states have call predecessors, (75), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:47,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3633 states to 3633 states and 4365 transitions. [2022-01-10 08:25:47,138 INFO L78 Accepts]: Start accepts. Automaton has 3633 states and 4365 transitions. Word has length 189 [2022-01-10 08:25:47,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:47,138 INFO L470 AbstractCegarLoop]: Abstraction has 3633 states and 4365 transitions. [2022-01-10 08:25:47,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:47,138 INFO L276 IsEmpty]: Start isEmpty. Operand 3633 states and 4365 transitions. [2022-01-10 08:25:47,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:47,138 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:47,138 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:47,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:47,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:47,346 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:47,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:47,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1741518568, now seen corresponding path program 1 times [2022-01-10 08:25:47,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:47,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458360074] [2022-01-10 08:25:47,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:47,348 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:47,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:47,357 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:47,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-01-10 08:25:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:47,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:25:47,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:47,734 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 08:25:47,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:47,735 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:47,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458360074] [2022-01-10 08:25:47,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458360074] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:47,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:47,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:47,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70695051] [2022-01-10 08:25:47,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:47,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:47,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:47,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:47,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:47,736 INFO L87 Difference]: Start difference. First operand 3633 states and 4365 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:48,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:48,579 INFO L93 Difference]: Finished difference Result 7458 states and 8991 transitions. [2022-01-10 08:25:48,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:48,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-01-10 08:25:48,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:48,585 INFO L225 Difference]: With dead ends: 7458 [2022-01-10 08:25:48,585 INFO L226 Difference]: Without dead ends: 3847 [2022-01-10 08:25:48,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 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 08:25:48,590 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 768 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:48,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [788 Valid, 1164 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:48,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3847 states. [2022-01-10 08:25:48,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3847 to 3755. [2022-01-10 08:25:48,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 3612 states have (on average 1.1924141749723145) internal successors, (4307), 3614 states have internal predecessors, (4307), 75 states have call successors, (75), 66 states have call predecessors, (75), 67 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:48,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 4458 transitions. [2022-01-10 08:25:48,961 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 4458 transitions. Word has length 189 [2022-01-10 08:25:48,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:48,961 INFO L470 AbstractCegarLoop]: Abstraction has 3755 states and 4458 transitions. [2022-01-10 08:25:48,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:48,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 4458 transitions. [2022-01-10 08:25:48,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:25:48,962 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:48,962 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:48,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:49,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:49,168 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:49,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:49,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1679478954, now seen corresponding path program 1 times [2022-01-10 08:25:49,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:49,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176820393] [2022-01-10 08:25:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:49,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:49,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:49,169 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:49,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-01-10 08:25:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:49,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:25:49,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:49,537 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 08:25:49,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:49,537 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:49,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176820393] [2022-01-10 08:25:49,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176820393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:49,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:49,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:25:49,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8203068] [2022-01-10 08:25:49,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:49,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:25:49,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:49,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:25:49,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:25:49,538 INFO L87 Difference]: Start difference. First operand 3755 states and 4458 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 08:25:50,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:50,305 INFO L93 Difference]: Finished difference Result 11174 states and 13305 transitions. [2022-01-10 08:25:50,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:25:50,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 189 [2022-01-10 08:25:50,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:50,317 INFO L225 Difference]: With dead ends: 11174 [2022-01-10 08:25:50,317 INFO L226 Difference]: Without dead ends: 7442 [2022-01-10 08:25:50,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 187 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 08:25:50,323 INFO L933 BasicCegarLoop]: 626 mSDtfsCounter, 357 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1133 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 08:25:50,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 1133 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:50,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7442 states. [2022-01-10 08:25:51,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7442 to 7440. [2022-01-10 08:25:51,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7440 states, 7159 states have (on average 1.18689761139824) internal successors, (8497), 7164 states have internal predecessors, (8497), 146 states have call successors, (146), 132 states have call predecessors, (146), 134 states have return successors, (148), 144 states have call predecessors, (148), 146 states have call successors, (148) [2022-01-10 08:25:51,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7440 states to 7440 states and 8791 transitions. [2022-01-10 08:25:51,146 INFO L78 Accepts]: Start accepts. Automaton has 7440 states and 8791 transitions. Word has length 189 [2022-01-10 08:25:51,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:51,146 INFO L470 AbstractCegarLoop]: Abstraction has 7440 states and 8791 transitions. [2022-01-10 08:25:51,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 08:25:51,146 INFO L276 IsEmpty]: Start isEmpty. Operand 7440 states and 8791 transitions. [2022-01-10 08:25:51,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-01-10 08:25:51,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:51,150 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:25:51,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Ended with exit code 0 [2022-01-10 08:25:51,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:51,358 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:51,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:51,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1988541515, now seen corresponding path program 1 times [2022-01-10 08:25:51,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:51,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413310923] [2022-01-10 08:25:51,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:51,359 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:51,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:51,360 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:51,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2022-01-10 08:25:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:51,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:25:51,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:51,934 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 08:25:51,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:51,935 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:51,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413310923] [2022-01-10 08:25:51,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413310923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:51,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:51,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:25:51,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019733261] [2022-01-10 08:25:51,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:51,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:25:51,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:51,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:25:51,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:25:51,936 INFO L87 Difference]: Start difference. First operand 7440 states and 8791 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)