/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.03.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:22:49,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:22:49,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:22:49,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 08:22:49,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 08:22:49,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 08:22:49,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 08:22:49,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 08:22:49,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 08:22:49,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 08:22:49,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 08:22:49,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 08:22:49,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:22:49,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:22:49,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:22:49,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:22:49,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:22:49,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:22:49,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:22:49,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:22:49,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:22:49,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:22:49,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:22:49,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:22:49,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 08:22:49,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 08:22:49,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 08:22:49,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 08:22:49,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 08:22:49,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 08:22:49,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 08:22:49,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 08:22:49,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 08:22:49,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 08:22:49,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 08:22:49,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 08:22:49,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 08:22:49,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 08:22:49,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:22:49,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:22:49,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:22:49,176 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 08:22:49,192 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:22:49,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:22:49,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:22:49,192 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:22:49,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 08:22:49,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 08:22:49,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:22:49,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:22:49,193 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:22:49,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:22:49,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:22:49,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:22:49,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:22:49,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:22:49,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:22:49,194 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:22:49,195 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:22:49,195 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:22:49,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:22:49,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:22:49,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:22:49,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:22:49,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:22:49,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:22:49,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:22:49,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:22:49,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:22:49,196 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 08:22:49,196 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 08:22:49,196 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:22:49,197 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:22:49,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:22:49,197 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:22:49,197 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:22:49,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:22:49,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:22:49,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:22:49,394 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:22:49,397 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:22:49,398 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.03.cil-2.c [2022-01-10 08:22:49,440 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d774c4d3/9d0807ab3d51426881a4f6c5b2ef3249/FLAG2437163cd [2022-01-10 08:22:49,851 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:22:49,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.03.cil-2.c [2022-01-10 08:22:49,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d774c4d3/9d0807ab3d51426881a4f6c5b2ef3249/FLAG2437163cd [2022-01-10 08:22:49,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d774c4d3/9d0807ab3d51426881a4f6c5b2ef3249 [2022-01-10 08:22:49,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:22:49,886 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 08:22:49,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:22:49,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:22:49,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:22:49,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:22:49" (1/1) ... [2022-01-10 08:22:49,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c2dda7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:49, skipping insertion in model container [2022-01-10 08:22:49,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:22:49" (1/1) ... [2022-01-10 08:22:49,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:22:49,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:22:50,059 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.03.cil-2.c[911,924] [2022-01-10 08:22:50,099 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.03.cil-2.c[8416,8429] [2022-01-10 08:22:50,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:22:50,131 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:22:50,138 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.03.cil-2.c[911,924] [2022-01-10 08:22:50,151 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.03.cil-2.c[8416,8429] [2022-01-10 08:22:50,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:22:50,179 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:22:50,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:50 WrapperNode [2022-01-10 08:22:50,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:22:50,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:22:50,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:22:50,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:22:50,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:50" (1/1) ... [2022-01-10 08:22:50,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:50" (1/1) ... [2022-01-10 08:22:50,225 INFO L137 Inliner]: procedures = 62, calls = 70, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 534 [2022-01-10 08:22:50,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:22:50,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:22:50,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:22:50,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:22:50,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:50" (1/1) ... [2022-01-10 08:22:50,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:50" (1/1) ... [2022-01-10 08:22:50,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:50" (1/1) ... [2022-01-10 08:22:50,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:50" (1/1) ... [2022-01-10 08:22:50,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:50" (1/1) ... [2022-01-10 08:22:50,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:50" (1/1) ... [2022-01-10 08:22:50,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:50" (1/1) ... [2022-01-10 08:22:50,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:22:50,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:22:50,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:22:50,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:22:50,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:50" (1/1) ... [2022-01-10 08:22:50,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:22:50,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:22:50,292 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 08:22:50,293 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 08:22:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:22:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 08:22:50,316 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 08:22:50,316 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-01-10 08:22:50,316 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-01-10 08:22:50,317 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-01-10 08:22:50,320 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-01-10 08:22:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-01-10 08:22:50,320 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-01-10 08:22:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-01-10 08:22:50,320 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-01-10 08:22:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-01-10 08:22:50,320 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-01-10 08:22:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-01-10 08:22:50,320 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-01-10 08:22:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-01-10 08:22:50,321 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-01-10 08:22:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:22:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-01-10 08:22:50,321 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-01-10 08:22:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-01-10 08:22:50,321 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-01-10 08:22:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-01-10 08:22:50,321 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-01-10 08:22:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-01-10 08:22:50,321 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-01-10 08:22:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-01-10 08:22:50,321 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-01-10 08:22:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:22:50,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:22:50,322 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-01-10 08:22:50,322 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-01-10 08:22:50,404 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:22:50,405 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:22:50,871 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1bv32 == ~q_free~0); [2022-01-10 08:22:50,871 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 08:22:50,917 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:22:50,927 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:22:50,927 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-01-10 08:22:50,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:22:50 BoogieIcfgContainer [2022-01-10 08:22:50,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:22:50,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:22:50,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:22:50,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:22:50,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:22:49" (1/3) ... [2022-01-10 08:22:50,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f638ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:22:50, skipping insertion in model container [2022-01-10 08:22:50,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:50" (2/3) ... [2022-01-10 08:22:50,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f638ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:22:50, skipping insertion in model container [2022-01-10 08:22:50,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:22:50" (3/3) ... [2022-01-10 08:22:50,936 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.03.cil-2.c [2022-01-10 08:22:50,939 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:22:50,939 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 08:22:50,973 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:22:50,977 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 08:22:50,977 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 08:22:50,991 INFO L276 IsEmpty]: Start isEmpty. Operand has 274 states, 224 states have (on average 1.5714285714285714) internal successors, (352), 230 states have internal predecessors, (352), 33 states have call successors, (33), 14 states have call predecessors, (33), 14 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-10 08:22:51,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:22:51,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:51,010 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 08:22:51,011 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:51,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:51,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1569523181, now seen corresponding path program 1 times [2022-01-10 08:22:51,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:51,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327685392] [2022-01-10 08:22:51,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:51,024 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:51,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:51,025 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 08:22:51,030 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 08:22:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:51,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 08:22:51,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:51,328 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 08:22:51,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:51,328 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:51,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327685392] [2022-01-10 08:22:51,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327685392] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:51,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:51,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:22:51,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149673048] [2022-01-10 08:22:51,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:51,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:51,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:51,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:51,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:51,361 INFO L87 Difference]: Start difference. First operand has 274 states, 224 states have (on average 1.5714285714285714) internal successors, (352), 230 states have internal predecessors, (352), 33 states have call successors, (33), 14 states have call predecessors, (33), 14 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) 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 08:22:51,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:51,838 INFO L93 Difference]: Finished difference Result 648 states and 993 transitions. [2022-01-10 08:22:51,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:22:51,840 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 08:22:51,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:51,857 INFO L225 Difference]: With dead ends: 648 [2022-01-10 08:22:51,857 INFO L226 Difference]: Without dead ends: 383 [2022-01-10 08:22:51,871 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 08:22:51,873 INFO L933 BasicCegarLoop]: 395 mSDtfsCounter, 337 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:51,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 1025 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:51,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-01-10 08:22:51,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 376. [2022-01-10 08:22:51,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 306 states have (on average 1.4607843137254901) internal successors, (447), 312 states have internal predecessors, (447), 46 states have call successors, (46), 21 states have call predecessors, (46), 22 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-01-10 08:22:51,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 542 transitions. [2022-01-10 08:22:51,924 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 542 transitions. Word has length 65 [2022-01-10 08:22:51,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:51,924 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 542 transitions. [2022-01-10 08:22:51,925 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 08:22:51,925 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 542 transitions. [2022-01-10 08:22:51,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:22:51,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:51,929 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 08:22:51,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:52,137 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 08:22:52,138 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:52,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:52,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1046555475, now seen corresponding path program 1 times [2022-01-10 08:22:52,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:52,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745280536] [2022-01-10 08:22:52,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:52,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:52,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:52,141 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 08:22:52,158 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 08:22:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:52,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:22:52,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:52,378 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 08:22:52,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:52,378 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:52,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745280536] [2022-01-10 08:22:52,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745280536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:52,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:52,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:22:52,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543688553] [2022-01-10 08:22:52,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:52,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:52,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:52,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:52,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:52,381 INFO L87 Difference]: Start difference. First operand 376 states and 542 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:22:52,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:52,797 INFO L93 Difference]: Finished difference Result 832 states and 1202 transitions. [2022-01-10 08:22:52,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:22:52,798 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 08:22:52,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:52,801 INFO L225 Difference]: With dead ends: 832 [2022-01-10 08:22:52,802 INFO L226 Difference]: Without dead ends: 621 [2022-01-10 08:22:52,802 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 08:22:52,803 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 324 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:52,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 998 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:52,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-01-10 08:22:52,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 613. [2022-01-10 08:22:52,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 495 states have (on average 1.4282828282828284) internal successors, (707), 509 states have internal predecessors, (707), 72 states have call successors, (72), 35 states have call predecessors, (72), 44 states have return successors, (95), 73 states have call predecessors, (95), 70 states have call successors, (95) [2022-01-10 08:22:52,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 874 transitions. [2022-01-10 08:22:52,840 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 874 transitions. Word has length 65 [2022-01-10 08:22:52,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:52,840 INFO L470 AbstractCegarLoop]: Abstraction has 613 states and 874 transitions. [2022-01-10 08:22:52,840 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 08:22:52,840 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 874 transitions. [2022-01-10 08:22:52,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:22:52,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:52,843 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 08:22:52,852 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 08:22:53,050 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 08:22:53,050 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:53,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:53,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1085812205, now seen corresponding path program 1 times [2022-01-10 08:22:53,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:53,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234047404] [2022-01-10 08:22:53,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:53,052 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:53,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:53,064 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 08:22:53,065 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 08:22:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:53,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:22:53,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:53,234 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 08:22:53,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:53,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:53,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234047404] [2022-01-10 08:22:53,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234047404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:53,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:53,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:22:53,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804699330] [2022-01-10 08:22:53,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:53,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:22:53,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:53,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:22:53,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:53,237 INFO L87 Difference]: Start difference. First operand 613 states and 874 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 08:22:53,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:53,307 INFO L93 Difference]: Finished difference Result 1449 states and 2031 transitions. [2022-01-10 08:22:53,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:22:53,307 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 08:22:53,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:53,312 INFO L225 Difference]: With dead ends: 1449 [2022-01-10 08:22:53,312 INFO L226 Difference]: Without dead ends: 1015 [2022-01-10 08:22:53,314 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 08:22:53,315 INFO L933 BasicCegarLoop]: 415 mSDtfsCounter, 348 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 544 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 08:22:53,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 544 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:53,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2022-01-10 08:22:53,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 1003. [2022-01-10 08:22:53,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 807 states have (on average 1.3977695167286246) internal successors, (1128), 831 states have internal predecessors, (1128), 112 states have call successors, (112), 63 states have call predecessors, (112), 82 states have return successors, (152), 113 states have call predecessors, (152), 110 states have call successors, (152) [2022-01-10 08:22:53,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1392 transitions. [2022-01-10 08:22:53,352 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1392 transitions. Word has length 65 [2022-01-10 08:22:53,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:53,352 INFO L470 AbstractCegarLoop]: Abstraction has 1003 states and 1392 transitions. [2022-01-10 08:22:53,352 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 08:22:53,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1392 transitions. [2022-01-10 08:22:53,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 08:22:53,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:53,354 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 08:22:53,375 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 08:22:53,563 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 08:22:53,563 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:53,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:53,564 INFO L85 PathProgramCache]: Analyzing trace with hash -90011496, now seen corresponding path program 1 times [2022-01-10 08:22:53,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:53,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720832452] [2022-01-10 08:22:53,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:53,565 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:53,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:53,565 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 08:22:53,566 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 08:22:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:53,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:22:53,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:53,748 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 08:22:53,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:53,748 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:53,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720832452] [2022-01-10 08:22:53,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720832452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:53,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:53,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:22:53,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316263638] [2022-01-10 08:22:53,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:53,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:22:53,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:53,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:22:53,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:22:53,750 INFO L87 Difference]: Start difference. First operand 1003 states and 1392 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 08:22:53,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:53,790 INFO L93 Difference]: Finished difference Result 1867 states and 2586 transitions. [2022-01-10 08:22:53,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:22:53,791 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 08:22:53,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:53,795 INFO L225 Difference]: With dead ends: 1867 [2022-01-10 08:22:53,795 INFO L226 Difference]: Without dead ends: 1043 [2022-01-10 08:22:53,797 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 08:22:53,797 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 7 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1903 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 08:22:53,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 1903 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:53,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-01-10 08:22:53,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1023. [2022-01-10 08:22:53,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 823 states have (on average 1.385176184690158) internal successors, (1140), 847 states have internal predecessors, (1140), 112 states have call successors, (112), 63 states have call predecessors, (112), 86 states have return successors, (156), 117 states have call predecessors, (156), 110 states have call successors, (156) [2022-01-10 08:22:53,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1408 transitions. [2022-01-10 08:22:53,831 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1408 transitions. Word has length 66 [2022-01-10 08:22:53,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:53,831 INFO L470 AbstractCegarLoop]: Abstraction has 1023 states and 1408 transitions. [2022-01-10 08:22:53,831 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 08:22:53,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1408 transitions. [2022-01-10 08:22:53,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 08:22:53,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:53,833 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 08:22:53,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:54,040 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 08:22:54,040 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:54,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:54,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1119370794, now seen corresponding path program 1 times [2022-01-10 08:22:54,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:54,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391049091] [2022-01-10 08:22:54,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:54,041 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:54,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:54,042 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 08:22:54,044 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 08:22:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:54,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:22:54,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:54,191 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 08:22:54,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:54,192 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:54,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391049091] [2022-01-10 08:22:54,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391049091] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:54,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:54,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:22:54,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710131038] [2022-01-10 08:22:54,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:54,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:22:54,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:54,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:22:54,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:54,194 INFO L87 Difference]: Start difference. First operand 1023 states and 1408 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 08:22:54,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:54,278 INFO L93 Difference]: Finished difference Result 2639 states and 3588 transitions. [2022-01-10 08:22:54,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:22:54,279 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 08:22:54,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:54,286 INFO L225 Difference]: With dead ends: 2639 [2022-01-10 08:22:54,286 INFO L226 Difference]: Without dead ends: 1795 [2022-01-10 08:22:54,288 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 08:22:54,288 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 334 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 523 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 08:22:54,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 523 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:54,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2022-01-10 08:22:54,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1779. [2022-01-10 08:22:54,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1419 states have (on average 1.3530655391120507) internal successors, (1920), 1463 states have internal predecessors, (1920), 192 states have call successors, (192), 119 states have call predecessors, (192), 166 states have return successors, (274), 201 states have call predecessors, (274), 190 states have call successors, (274) [2022-01-10 08:22:54,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2386 transitions. [2022-01-10 08:22:54,347 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2386 transitions. Word has length 66 [2022-01-10 08:22:54,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:54,347 INFO L470 AbstractCegarLoop]: Abstraction has 1779 states and 2386 transitions. [2022-01-10 08:22:54,347 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 08:22:54,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2386 transitions. [2022-01-10 08:22:54,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 08:22:54,351 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:54,351 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 08:22:54,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 08:22:54,557 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 08:22:54,558 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:54,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:54,559 INFO L85 PathProgramCache]: Analyzing trace with hash -2075216171, now seen corresponding path program 1 times [2022-01-10 08:22:54,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:54,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903944473] [2022-01-10 08:22:54,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:54,559 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:54,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:54,560 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 08:22:54,565 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 08:22:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:54,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:22:54,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:54,728 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 08:22:54,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:54,729 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:54,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903944473] [2022-01-10 08:22:54,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903944473] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:54,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:54,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:22:54,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785008573] [2022-01-10 08:22:54,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:54,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:22:54,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:54,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:22:54,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:22:54,731 INFO L87 Difference]: Start difference. First operand 1779 states and 2386 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 08:22:54,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:54,791 INFO L93 Difference]: Finished difference Result 3435 states and 4606 transitions. [2022-01-10 08:22:54,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:22:54,791 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 08:22:54,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:54,798 INFO L225 Difference]: With dead ends: 3435 [2022-01-10 08:22:54,798 INFO L226 Difference]: Without dead ends: 1835 [2022-01-10 08:22:54,803 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 08:22:54,805 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 4 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1899 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 08:22:54,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1899 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:54,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2022-01-10 08:22:54,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1819. [2022-01-10 08:22:54,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1451 states have (on average 1.339765678842178) internal successors, (1944), 1495 states have internal predecessors, (1944), 192 states have call successors, (192), 119 states have call predecessors, (192), 174 states have return successors, (282), 209 states have call predecessors, (282), 190 states have call successors, (282) [2022-01-10 08:22:54,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 2418 transitions. [2022-01-10 08:22:54,858 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 2418 transitions. Word has length 83 [2022-01-10 08:22:54,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:54,859 INFO L470 AbstractCegarLoop]: Abstraction has 1819 states and 2418 transitions. [2022-01-10 08:22:54,859 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 08:22:54,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 2418 transitions. [2022-01-10 08:22:54,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 08:22:54,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:54,864 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 08:22:54,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-01-10 08:22:55,078 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 08:22:55,079 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:55,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:55,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1181729833, now seen corresponding path program 1 times [2022-01-10 08:22:55,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:55,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987002941] [2022-01-10 08:22:55,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:55,080 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:55,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:55,081 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 08:22:55,082 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 08:22:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:55,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:55,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:55,250 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 08:22:55,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:55,252 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:55,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987002941] [2022-01-10 08:22:55,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987002941] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:55,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:55,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:55,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230039197] [2022-01-10 08:22:55,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:55,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:22:55,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:55,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:22:55,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:22:55,253 INFO L87 Difference]: Start difference. First operand 1819 states and 2418 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 08:22:55,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:55,496 INFO L93 Difference]: Finished difference Result 5055 states and 6721 transitions. [2022-01-10 08:22:55,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:55,497 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 08:22:55,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:55,508 INFO L225 Difference]: With dead ends: 5055 [2022-01-10 08:22:55,508 INFO L226 Difference]: Without dead ends: 3419 [2022-01-10 08:22:55,511 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 08:22:55,512 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 505 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:55,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 612 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:22:55,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3419 states. [2022-01-10 08:22:55,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3419 to 3415. [2022-01-10 08:22:55,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3415 states, 2691 states have (on average 1.306577480490524) internal successors, (3516), 2783 states have internal predecessors, (3516), 372 states have call successors, (372), 231 states have call predecessors, (372), 350 states have return successors, (619), 409 states have call predecessors, (619), 370 states have call successors, (619) [2022-01-10 08:22:55,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3415 states to 3415 states and 4507 transitions. [2022-01-10 08:22:55,599 INFO L78 Accepts]: Start accepts. Automaton has 3415 states and 4507 transitions. Word has length 83 [2022-01-10 08:22:55,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:55,600 INFO L470 AbstractCegarLoop]: Abstraction has 3415 states and 4507 transitions. [2022-01-10 08:22:55,600 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 08:22:55,600 INFO L276 IsEmpty]: Start isEmpty. Operand 3415 states and 4507 transitions. [2022-01-10 08:22:55,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 08:22:55,603 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:55,603 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] [2022-01-10 08:22:55,610 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 08:22:55,810 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 08:22:55,810 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:55,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:55,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1962986806, now seen corresponding path program 1 times [2022-01-10 08:22:55,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:55,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141933670] [2022-01-10 08:22:55,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:55,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:55,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:55,812 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 08:22:55,813 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 08:22:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:55,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:22:55,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:55,967 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 08:22:55,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:55,967 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:55,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141933670] [2022-01-10 08:22:55,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141933670] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:55,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:55,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:22:55,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347356023] [2022-01-10 08:22:55,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:55,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:22:55,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:55,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:22:55,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:55,969 INFO L87 Difference]: Start difference. First operand 3415 states and 4507 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 08:22:56,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:56,013 INFO L93 Difference]: Finished difference Result 3559 states and 4721 transitions. [2022-01-10 08:22:56,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:22:56,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 79 [2022-01-10 08:22:56,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:56,026 INFO L225 Difference]: With dead ends: 3559 [2022-01-10 08:22:56,026 INFO L226 Difference]: Without dead ends: 3415 [2022-01-10 08:22:56,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 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 08:22:56,029 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 216 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 540 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 08:22:56,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 540 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:56,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3415 states. [2022-01-10 08:22:56,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3415 to 3415. [2022-01-10 08:22:56,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3415 states, 2691 states have (on average 1.3062058714232627) internal successors, (3515), 2783 states have internal predecessors, (3515), 372 states have call successors, (372), 231 states have call predecessors, (372), 350 states have return successors, (619), 409 states have call predecessors, (619), 370 states have call successors, (619) [2022-01-10 08:22:56,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3415 states to 3415 states and 4506 transitions. [2022-01-10 08:22:56,134 INFO L78 Accepts]: Start accepts. Automaton has 3415 states and 4506 transitions. Word has length 79 [2022-01-10 08:22:56,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:56,134 INFO L470 AbstractCegarLoop]: Abstraction has 3415 states and 4506 transitions. [2022-01-10 08:22:56,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 08:22:56,135 INFO L276 IsEmpty]: Start isEmpty. Operand 3415 states and 4506 transitions. [2022-01-10 08:22:56,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 08:22:56,137 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:56,137 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] [2022-01-10 08:22:56,161 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 08:22:56,345 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 08:22:56,345 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:56,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:56,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1839354316, now seen corresponding path program 1 times [2022-01-10 08:22:56,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:56,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606113325] [2022-01-10 08:22:56,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:56,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:56,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:56,347 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 08:22:56,349 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 08:22:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:56,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:56,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:56,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:56,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:56,503 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:56,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606113325] [2022-01-10 08:22:56,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606113325] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:56,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:56,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:56,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525108887] [2022-01-10 08:22:56,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:56,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:56,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:56,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:56,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:56,505 INFO L87 Difference]: Start difference. First operand 3415 states and 4506 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 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 08:22:56,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:56,866 INFO L93 Difference]: Finished difference Result 3709 states and 4950 transitions. [2022-01-10 08:22:56,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:22:56,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 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 79 [2022-01-10 08:22:56,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:56,878 INFO L225 Difference]: With dead ends: 3709 [2022-01-10 08:22:56,879 INFO L226 Difference]: Without dead ends: 3568 [2022-01-10 08:22:56,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 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 08:22:56,882 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 583 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:56,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 946 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:22:56,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2022-01-10 08:22:57,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 3557. [2022-01-10 08:22:57,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 2814 states have (on average 1.3155650319829424) internal successors, (3702), 2907 states have internal predecessors, (3702), 384 states have call successors, (384), 237 states have call predecessors, (384), 357 states have return successors, (632), 421 states have call predecessors, (632), 382 states have call successors, (632) [2022-01-10 08:22:57,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 4718 transitions. [2022-01-10 08:22:57,036 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 4718 transitions. Word has length 79 [2022-01-10 08:22:57,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:57,036 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 4718 transitions. [2022-01-10 08:22:57,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 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 08:22:57,036 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 4718 transitions. [2022-01-10 08:22:57,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 08:22:57,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:57,040 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] [2022-01-10 08:22:57,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:57,247 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 08:22:57,247 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:57,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:57,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1602306120, now seen corresponding path program 1 times [2022-01-10 08:22:57,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:57,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94174396] [2022-01-10 08:22:57,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:57,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:57,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:57,249 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 08:22:57,250 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 08:22:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:57,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:57,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:57,456 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 08:22:57,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:57,456 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:57,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94174396] [2022-01-10 08:22:57,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94174396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:57,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:57,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:57,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004920347] [2022-01-10 08:22:57,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:57,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:57,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:57,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:57,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:57,458 INFO L87 Difference]: Start difference. First operand 3557 states and 4718 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 08:22:57,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:57,750 INFO L93 Difference]: Finished difference Result 3840 states and 5146 transitions. [2022-01-10 08:22:57,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:57,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-01-10 08:22:57,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:57,764 INFO L225 Difference]: With dead ends: 3840 [2022-01-10 08:22:57,764 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 08:22:57,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 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 08:22:57,767 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 478 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:57,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 715 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:22:57,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 08:22:57,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 08:22:57,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 2814 states have (on average 1.3130774697938876) internal successors, (3695), 2907 states have internal predecessors, (3695), 384 states have call successors, (384), 237 states have call predecessors, (384), 357 states have return successors, (632), 421 states have call predecessors, (632), 382 states have call successors, (632) [2022-01-10 08:22:57,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 4711 transitions. [2022-01-10 08:22:57,885 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 4711 transitions. Word has length 79 [2022-01-10 08:22:57,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:57,885 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 4711 transitions. [2022-01-10 08:22:57,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 08:22:57,886 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 4711 transitions. [2022-01-10 08:22:57,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 08:22:57,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:57,889 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] [2022-01-10 08:22:57,908 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 08:22:58,096 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 08:22:58,096 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:58,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:58,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1594659404, now seen corresponding path program 1 times [2022-01-10 08:22:58,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:58,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510840473] [2022-01-10 08:22:58,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:58,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:58,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:58,098 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 08:22:58,100 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 08:22:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:58,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:58,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:58,297 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 08:22:58,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:58,297 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:58,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510840473] [2022-01-10 08:22:58,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510840473] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:58,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:58,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:58,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709577487] [2022-01-10 08:22:58,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:58,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:58,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:58,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:58,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:58,298 INFO L87 Difference]: Start difference. First operand 3557 states and 4711 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 08:22:58,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:58,563 INFO L93 Difference]: Finished difference Result 3840 states and 5132 transitions. [2022-01-10 08:22:58,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:58,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-01-10 08:22:58,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:58,577 INFO L225 Difference]: With dead ends: 3840 [2022-01-10 08:22:58,577 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 08:22:58,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 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 08:22:58,581 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 472 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:58,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 708 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:22:58,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 08:22:58,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 08:22:58,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 2814 states have (on average 1.310589907604833) internal successors, (3688), 2907 states have internal predecessors, (3688), 384 states have call successors, (384), 237 states have call predecessors, (384), 357 states have return successors, (632), 421 states have call predecessors, (632), 382 states have call successors, (632) [2022-01-10 08:22:58,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 4704 transitions. [2022-01-10 08:22:58,680 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 4704 transitions. Word has length 79 [2022-01-10 08:22:58,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:58,680 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 4704 transitions. [2022-01-10 08:22:58,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 08:22:58,680 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 4704 transitions. [2022-01-10 08:22:58,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 08:22:58,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:58,683 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] [2022-01-10 08:22:58,689 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 08:22:58,889 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 08:22:58,890 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:58,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:58,890 INFO L85 PathProgramCache]: Analyzing trace with hash -2012056010, now seen corresponding path program 1 times [2022-01-10 08:22:58,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:58,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579911343] [2022-01-10 08:22:58,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:58,890 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:58,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:58,891 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 08:22:58,896 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 08:22:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:58,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:58,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:59,075 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 08:22:59,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:59,075 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:59,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579911343] [2022-01-10 08:22:59,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579911343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:59,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:59,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:59,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490925463] [2022-01-10 08:22:59,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:59,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:59,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:59,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:59,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:59,077 INFO L87 Difference]: Start difference. First operand 3557 states and 4704 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 08:22:59,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:59,351 INFO L93 Difference]: Finished difference Result 3840 states and 5118 transitions. [2022-01-10 08:22:59,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:59,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-01-10 08:22:59,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:59,370 INFO L225 Difference]: With dead ends: 3840 [2022-01-10 08:22:59,370 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 08:22:59,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 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 08:22:59,373 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 466 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:59,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 701 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:22:59,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 08:22:59,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 08:22:59,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 2814 states have (on average 1.3081023454157783) internal successors, (3681), 2907 states have internal predecessors, (3681), 384 states have call successors, (384), 237 states have call predecessors, (384), 357 states have return successors, (632), 421 states have call predecessors, (632), 382 states have call successors, (632) [2022-01-10 08:22:59,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 4697 transitions. [2022-01-10 08:22:59,480 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 4697 transitions. Word has length 79 [2022-01-10 08:22:59,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:59,480 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 4697 transitions. [2022-01-10 08:22:59,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 08:22:59,481 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 4697 transitions. [2022-01-10 08:22:59,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 08:22:59,484 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:59,484 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] [2022-01-10 08:22:59,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-01-10 08:22:59,691 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 08:22:59,691 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:59,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:59,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1466797262, now seen corresponding path program 1 times [2022-01-10 08:22:59,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:59,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697908605] [2022-01-10 08:22:59,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:59,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:59,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:59,693 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 08:22:59,693 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 08:22:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:59,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:59,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:59,856 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 08:22:59,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:59,856 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:59,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697908605] [2022-01-10 08:22:59,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697908605] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:59,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:59,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:59,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361632975] [2022-01-10 08:22:59,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:59,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:59,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:59,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:59,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:59,857 INFO L87 Difference]: Start difference. First operand 3557 states and 4697 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 08:23:00,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:00,185 INFO L93 Difference]: Finished difference Result 3906 states and 5204 transitions. [2022-01-10 08:23:00,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:23:00,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-01-10 08:23:00,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:00,195 INFO L225 Difference]: With dead ends: 3906 [2022-01-10 08:23:00,195 INFO L226 Difference]: Without dead ends: 3623 [2022-01-10 08:23:00,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 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 08:23:00,198 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 496 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:00,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [519 Valid, 693 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:23:00,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2022-01-10 08:23:00,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3623. [2022-01-10 08:23:00,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3623 states, 2874 states have (on average 1.3068893528183716) internal successors, (3756), 2967 states have internal predecessors, (3756), 386 states have call successors, (386), 241 states have call predecessors, (386), 361 states have return successors, (634), 423 states have call predecessors, (634), 384 states have call successors, (634) [2022-01-10 08:23:00,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 4776 transitions. [2022-01-10 08:23:00,304 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 4776 transitions. Word has length 79 [2022-01-10 08:23:00,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:00,304 INFO L470 AbstractCegarLoop]: Abstraction has 3623 states and 4776 transitions. [2022-01-10 08:23:00,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 08:23:00,304 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 4776 transitions. [2022-01-10 08:23:00,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 08:23:00,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:00,307 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] [2022-01-10 08:23:00,315 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 08:23:00,513 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 08:23:00,513 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:00,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:00,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1310660938, now seen corresponding path program 1 times [2022-01-10 08:23:00,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:00,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765080084] [2022-01-10 08:23:00,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:00,514 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:00,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:00,515 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 08:23:00,515 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 08:23:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:00,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:00,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:00,678 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 08:23:00,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:00,678 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:00,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765080084] [2022-01-10 08:23:00,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765080084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:00,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:00,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:00,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791716776] [2022-01-10 08:23:00,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:00,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:00,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:00,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:00,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:00,679 INFO L87 Difference]: Start difference. First operand 3623 states and 4776 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 08:23:01,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:01,031 INFO L93 Difference]: Finished difference Result 4038 states and 5362 transitions. [2022-01-10 08:23:01,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:23:01,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-01-10 08:23:01,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:01,040 INFO L225 Difference]: With dead ends: 4038 [2022-01-10 08:23:01,040 INFO L226 Difference]: Without dead ends: 3689 [2022-01-10 08:23:01,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 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 08:23:01,042 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 489 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:01,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 687 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:23:01,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3689 states. [2022-01-10 08:23:01,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3689 to 3689. [2022-01-10 08:23:01,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3689 states, 2934 states have (on average 1.3043626448534424) internal successors, (3827), 3027 states have internal predecessors, (3827), 388 states have call successors, (388), 245 states have call predecessors, (388), 365 states have return successors, (636), 425 states have call predecessors, (636), 386 states have call successors, (636) [2022-01-10 08:23:01,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 4851 transitions. [2022-01-10 08:23:01,143 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 4851 transitions. Word has length 79 [2022-01-10 08:23:01,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:01,143 INFO L470 AbstractCegarLoop]: Abstraction has 3689 states and 4851 transitions. [2022-01-10 08:23:01,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 08:23:01,143 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 4851 transitions. [2022-01-10 08:23:01,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 08:23:01,148 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:01,148 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] [2022-01-10 08:23:01,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 08:23:01,354 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 08:23:01,355 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:01,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:01,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1511542835, now seen corresponding path program 1 times [2022-01-10 08:23:01,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:01,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685156346] [2022-01-10 08:23:01,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:01,356 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:01,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:01,356 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 08:23:01,357 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 08:23:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:01,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:01,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:01,525 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 08:23:01,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:01,526 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:01,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685156346] [2022-01-10 08:23:01,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685156346] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:01,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:01,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:01,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518349290] [2022-01-10 08:23:01,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:01,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:01,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:01,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:01,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:01,527 INFO L87 Difference]: Start difference. First operand 3689 states and 4851 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 08:23:01,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:01,887 INFO L93 Difference]: Finished difference Result 4170 states and 5512 transitions. [2022-01-10 08:23:01,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:23:01,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-01-10 08:23:01,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:01,897 INFO L225 Difference]: With dead ends: 4170 [2022-01-10 08:23:01,897 INFO L226 Difference]: Without dead ends: 3755 [2022-01-10 08:23:01,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 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 08:23:01,900 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 482 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:01,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [505 Valid, 678 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:23:01,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3755 states. [2022-01-10 08:23:02,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3755 to 3755. [2022-01-10 08:23:02,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 2994 states have (on average 1.3006012024048097) internal successors, (3894), 3087 states have internal predecessors, (3894), 390 states have call successors, (390), 249 states have call predecessors, (390), 369 states have return successors, (638), 427 states have call predecessors, (638), 388 states have call successors, (638) [2022-01-10 08:23:02,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 4922 transitions. [2022-01-10 08:23:02,013 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 4922 transitions. Word has length 79 [2022-01-10 08:23:02,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:02,014 INFO L470 AbstractCegarLoop]: Abstraction has 3755 states and 4922 transitions. [2022-01-10 08:23:02,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 08:23:02,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 4922 transitions. [2022-01-10 08:23:02,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 08:23:02,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:02,017 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] [2022-01-10 08:23:02,024 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 08:23:02,224 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 08:23:02,224 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:02,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:02,225 INFO L85 PathProgramCache]: Analyzing trace with hash -2115894736, now seen corresponding path program 1 times [2022-01-10 08:23:02,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:02,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909249471] [2022-01-10 08:23:02,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:02,225 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:02,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:02,226 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 08:23:02,228 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 08:23:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:02,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:02,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:02,368 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 08:23:02,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:02,368 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:02,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909249471] [2022-01-10 08:23:02,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909249471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:02,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:02,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:23:02,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425732932] [2022-01-10 08:23:02,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:02,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:02,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:02,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:02,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:02,369 INFO L87 Difference]: Start difference. First operand 3755 states and 4922 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 08:23:02,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:02,502 INFO L93 Difference]: Finished difference Result 4333 states and 5693 transitions. [2022-01-10 08:23:02,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:23:02,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-01-10 08:23:02,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:02,511 INFO L225 Difference]: With dead ends: 4333 [2022-01-10 08:23:02,511 INFO L226 Difference]: Without dead ends: 3853 [2022-01-10 08:23:02,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 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 08:23:02,514 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 128 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1497 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 08:23:02,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 1497 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:02,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2022-01-10 08:23:02,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 3761. [2022-01-10 08:23:02,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3761 states, 3000 states have (on average 1.298) internal successors, (3894), 3093 states have internal predecessors, (3894), 390 states have call successors, (390), 249 states have call predecessors, (390), 369 states have return successors, (638), 427 states have call predecessors, (638), 388 states have call successors, (638) [2022-01-10 08:23:02,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3761 states to 3761 states and 4922 transitions. [2022-01-10 08:23:02,627 INFO L78 Accepts]: Start accepts. Automaton has 3761 states and 4922 transitions. Word has length 79 [2022-01-10 08:23:02,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:02,627 INFO L470 AbstractCegarLoop]: Abstraction has 3761 states and 4922 transitions. [2022-01-10 08:23:02,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 08:23:02,628 INFO L276 IsEmpty]: Start isEmpty. Operand 3761 states and 4922 transitions. [2022-01-10 08:23:02,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 08:23:02,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:02,631 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] [2022-01-10 08:23:02,652 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 08:23:02,837 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 08:23:02,838 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:02,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:02,838 INFO L85 PathProgramCache]: Analyzing trace with hash -2131413454, now seen corresponding path program 1 times [2022-01-10 08:23:02,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:02,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966689671] [2022-01-10 08:23:02,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:02,838 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:02,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:02,839 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 08:23:02,840 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 08:23:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:02,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:02,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:02,980 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 08:23:02,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:02,980 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:02,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966689671] [2022-01-10 08:23:02,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966689671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:02,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:02,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:23:02,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851711134] [2022-01-10 08:23:02,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:02,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:02,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:02,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:02,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:02,982 INFO L87 Difference]: Start difference. First operand 3761 states and 4922 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 08:23:03,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:03,100 INFO L93 Difference]: Finished difference Result 4317 states and 5657 transitions. [2022-01-10 08:23:03,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:23:03,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-01-10 08:23:03,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:03,110 INFO L225 Difference]: With dead ends: 4317 [2022-01-10 08:23:03,110 INFO L226 Difference]: Without dead ends: 3831 [2022-01-10 08:23:03,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 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 08:23:03,112 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 89 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1490 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 08:23:03,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 1490 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:03,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3831 states. [2022-01-10 08:23:03,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3831 to 3767. [2022-01-10 08:23:03,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3767 states, 3006 states have (on average 1.2954091816367266) internal successors, (3894), 3099 states have internal predecessors, (3894), 390 states have call successors, (390), 249 states have call predecessors, (390), 369 states have return successors, (638), 427 states have call predecessors, (638), 388 states have call successors, (638) [2022-01-10 08:23:03,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3767 states to 3767 states and 4922 transitions. [2022-01-10 08:23:03,221 INFO L78 Accepts]: Start accepts. Automaton has 3767 states and 4922 transitions. Word has length 79 [2022-01-10 08:23:03,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:03,221 INFO L470 AbstractCegarLoop]: Abstraction has 3767 states and 4922 transitions. [2022-01-10 08:23:03,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 08:23:03,221 INFO L276 IsEmpty]: Start isEmpty. Operand 3767 states and 4922 transitions. [2022-01-10 08:23:03,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 08:23:03,224 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:03,224 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] [2022-01-10 08:23:03,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 08:23:03,430 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 08:23:03,431 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:03,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:03,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1266160564, now seen corresponding path program 1 times [2022-01-10 08:23:03,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:03,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515106627] [2022-01-10 08:23:03,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:03,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:03,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:03,433 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 08:23:03,434 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 08:23:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:03,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:03,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:03,577 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 08:23:03,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:03,578 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:03,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515106627] [2022-01-10 08:23:03,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515106627] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:03,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:03,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:23:03,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24267200] [2022-01-10 08:23:03,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:03,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:03,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:03,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:03,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:03,579 INFO L87 Difference]: Start difference. First operand 3767 states and 4922 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 08:23:03,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:03,685 INFO L93 Difference]: Finished difference Result 4427 states and 5785 transitions. [2022-01-10 08:23:03,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:23:03,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-01-10 08:23:03,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:03,694 INFO L225 Difference]: With dead ends: 4427 [2022-01-10 08:23:03,694 INFO L226 Difference]: Without dead ends: 3935 [2022-01-10 08:23:03,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 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 08:23:03,697 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 50 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1467 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 08:23:03,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 1467 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:03,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2022-01-10 08:23:03,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 3791. [2022-01-10 08:23:03,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3791 states, 3030 states have (on average 1.293069306930693) internal successors, (3918), 3123 states have internal predecessors, (3918), 390 states have call successors, (390), 249 states have call predecessors, (390), 369 states have return successors, (638), 427 states have call predecessors, (638), 388 states have call successors, (638) [2022-01-10 08:23:03,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3791 states to 3791 states and 4946 transitions. [2022-01-10 08:23:03,814 INFO L78 Accepts]: Start accepts. Automaton has 3791 states and 4946 transitions. Word has length 79 [2022-01-10 08:23:03,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:03,814 INFO L470 AbstractCegarLoop]: Abstraction has 3791 states and 4946 transitions. [2022-01-10 08:23:03,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 08:23:03,814 INFO L276 IsEmpty]: Start isEmpty. Operand 3791 states and 4946 transitions. [2022-01-10 08:23:03,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 08:23:03,817 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:03,817 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] [2022-01-10 08:23:03,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-01-10 08:23:04,024 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 08:23:04,024 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:04,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:04,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1925692086, now seen corresponding path program 1 times [2022-01-10 08:23:04,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:04,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739463002] [2022-01-10 08:23:04,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:04,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:04,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:04,026 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 08:23:04,033 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 08:23:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:04,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:04,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:04,163 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 08:23:04,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:04,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:04,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739463002] [2022-01-10 08:23:04,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739463002] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:04,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:04,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:23:04,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781137400] [2022-01-10 08:23:04,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:04,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:04,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:04,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:04,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:04,165 INFO L87 Difference]: Start difference. First operand 3791 states and 4946 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 08:23:04,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:04,277 INFO L93 Difference]: Finished difference Result 4321 states and 5629 transitions. [2022-01-10 08:23:04,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:23:04,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-01-10 08:23:04,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:04,285 INFO L225 Difference]: With dead ends: 4321 [2022-01-10 08:23:04,285 INFO L226 Difference]: Without dead ends: 3805 [2022-01-10 08:23:04,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 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 08:23:04,288 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 10 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1447 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 08:23:04,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1447 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:04,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3805 states. [2022-01-10 08:23:04,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3805 to 3797. [2022-01-10 08:23:04,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3797 states, 3036 states have (on average 1.290513833992095) internal successors, (3918), 3129 states have internal predecessors, (3918), 390 states have call successors, (390), 249 states have call predecessors, (390), 369 states have return successors, (638), 427 states have call predecessors, (638), 388 states have call successors, (638) [2022-01-10 08:23:04,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3797 states to 3797 states and 4946 transitions. [2022-01-10 08:23:04,402 INFO L78 Accepts]: Start accepts. Automaton has 3797 states and 4946 transitions. Word has length 79 [2022-01-10 08:23:04,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:04,402 INFO L470 AbstractCegarLoop]: Abstraction has 3797 states and 4946 transitions. [2022-01-10 08:23:04,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 08:23:04,403 INFO L276 IsEmpty]: Start isEmpty. Operand 3797 states and 4946 transitions. [2022-01-10 08:23:04,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 08:23:04,406 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:04,406 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] [2022-01-10 08:23:04,412 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 08:23:04,612 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 08:23:04,613 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:04,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:04,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1667675336, now seen corresponding path program 1 times [2022-01-10 08:23:04,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:04,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840713212] [2022-01-10 08:23:04,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:04,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:04,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:04,615 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 08:23:04,617 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 08:23:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:04,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:23:04,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:04,790 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 08:23:04,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:04,790 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:04,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840713212] [2022-01-10 08:23:04,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840713212] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:04,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:04,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:04,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399981000] [2022-01-10 08:23:04,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:04,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:04,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:04,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:04,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:04,791 INFO L87 Difference]: Start difference. First operand 3797 states and 4946 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 08:23:05,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:05,148 INFO L93 Difference]: Finished difference Result 4384 states and 5686 transitions. [2022-01-10 08:23:05,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:23:05,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-01-10 08:23:05,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:05,157 INFO L225 Difference]: With dead ends: 4384 [2022-01-10 08:23:05,157 INFO L226 Difference]: Without dead ends: 3861 [2022-01-10 08:23:05,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 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 08:23:05,160 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 451 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:05,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 685 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:23:05,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3861 states. [2022-01-10 08:23:05,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3861 to 3839. [2022-01-10 08:23:05,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3839 states, 3076 states have (on average 1.2831599479843954) internal successors, (3947), 3169 states have internal predecessors, (3947), 390 states have call successors, (390), 251 states have call predecessors, (390), 371 states have return successors, (638), 427 states have call predecessors, (638), 388 states have call successors, (638) [2022-01-10 08:23:05,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 4975 transitions. [2022-01-10 08:23:05,296 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 4975 transitions. Word has length 79 [2022-01-10 08:23:05,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:05,297 INFO L470 AbstractCegarLoop]: Abstraction has 3839 states and 4975 transitions. [2022-01-10 08:23:05,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 08:23:05,297 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 4975 transitions. [2022-01-10 08:23:05,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 08:23:05,300 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:05,300 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] [2022-01-10 08:23:05,306 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 08:23:05,506 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 08:23:05,507 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:05,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:05,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1244973510, now seen corresponding path program 1 times [2022-01-10 08:23:05,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:05,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1054025231] [2022-01-10 08:23:05,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:05,508 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:05,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:05,508 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 08:23:05,509 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 08:23:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:05,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:05,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:05,669 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 08:23:05,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:05,669 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:05,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1054025231] [2022-01-10 08:23:05,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1054025231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:05,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:05,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:23:05,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472249359] [2022-01-10 08:23:05,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:05,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:05,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:05,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:05,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:05,671 INFO L87 Difference]: Start difference. First operand 3839 states and 4975 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 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 08:23:05,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:05,804 INFO L93 Difference]: Finished difference Result 4942 states and 6314 transitions. [2022-01-10 08:23:05,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:05,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 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 79 [2022-01-10 08:23:05,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:05,814 INFO L225 Difference]: With dead ends: 4942 [2022-01-10 08:23:05,814 INFO L226 Difference]: Without dead ends: 4378 [2022-01-10 08:23:05,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 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 08:23:05,816 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 275 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 581 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 08:23:05,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 581 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:05,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4378 states. [2022-01-10 08:23:05,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4378 to 4376. [2022-01-10 08:23:05,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 3555 states have (on average 1.269479606188467) internal successors, (4513), 3651 states have internal predecessors, (4513), 421 states have call successors, (421), 277 states have call predecessors, (421), 398 states have return successors, (670), 456 states have call predecessors, (670), 419 states have call successors, (670) [2022-01-10 08:23:05,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 5604 transitions. [2022-01-10 08:23:05,963 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 5604 transitions. Word has length 79 [2022-01-10 08:23:05,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:05,963 INFO L470 AbstractCegarLoop]: Abstraction has 4376 states and 5604 transitions. [2022-01-10 08:23:05,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 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 08:23:05,963 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 5604 transitions. [2022-01-10 08:23:05,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 08:23:05,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:05,967 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 08:23:05,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 08:23:06,173 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 08:23:06,173 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:06,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:06,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1162164651, now seen corresponding path program 1 times [2022-01-10 08:23:06,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:06,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103811924] [2022-01-10 08:23:06,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:06,174 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:06,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:06,175 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 08:23:06,215 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 08:23:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:06,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:06,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:06,337 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 08:23:06,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:06,337 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:06,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103811924] [2022-01-10 08:23:06,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103811924] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:06,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:06,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:23:06,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975920509] [2022-01-10 08:23:06,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:06,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:06,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:06,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:06,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:06,338 INFO L87 Difference]: Start difference. First operand 4376 states and 5604 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 08:23:06,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:06,542 INFO L93 Difference]: Finished difference Result 10636 states and 13825 transitions. [2022-01-10 08:23:06,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:06,544 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 08:23:06,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:06,557 INFO L225 Difference]: With dead ends: 10636 [2022-01-10 08:23:06,557 INFO L226 Difference]: Without dead ends: 5944 [2022-01-10 08:23:06,565 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 08:23:06,566 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 116 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 832 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 08:23:06,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 832 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:06,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5944 states. [2022-01-10 08:23:06,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5944 to 5944. [2022-01-10 08:23:06,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5944 states, 4779 states have (on average 1.2699309478970495) internal successors, (6069), 4915 states have internal predecessors, (6069), 585 states have call successors, (585), 389 states have call predecessors, (585), 578 states have return successors, (1002), 648 states have call predecessors, (1002), 583 states have call successors, (1002) [2022-01-10 08:23:06,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 7656 transitions. [2022-01-10 08:23:06,792 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 7656 transitions. Word has length 85 [2022-01-10 08:23:06,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:06,792 INFO L470 AbstractCegarLoop]: Abstraction has 5944 states and 7656 transitions. [2022-01-10 08:23:06,792 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 08:23:06,792 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 7656 transitions. [2022-01-10 08:23:06,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 08:23:06,801 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:06,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:06,816 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 08:23:07,008 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 08:23:07,008 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:07,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:07,009 INFO L85 PathProgramCache]: Analyzing trace with hash 106142939, now seen corresponding path program 1 times [2022-01-10 08:23:07,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:07,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409333341] [2022-01-10 08:23:07,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:07,009 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:07,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:07,010 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 08:23:07,012 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 08:23:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:07,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:07,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:07,247 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 08:23:07,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:07,247 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:07,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409333341] [2022-01-10 08:23:07,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409333341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:07,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:07,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:23:07,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172289798] [2022-01-10 08:23:07,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:07,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:07,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:07,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:07,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:07,248 INFO L87 Difference]: Start difference. First operand 5944 states and 7656 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 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) [2022-01-10 08:23:07,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:07,431 INFO L93 Difference]: Finished difference Result 7955 states and 10071 transitions. [2022-01-10 08:23:07,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:07,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 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) Word has length 128 [2022-01-10 08:23:07,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:07,448 INFO L225 Difference]: With dead ends: 7955 [2022-01-10 08:23:07,448 INFO L226 Difference]: Without dead ends: 6854 [2022-01-10 08:23:07,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 126 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 08:23:07,453 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 266 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 579 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 08:23:07,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 579 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:07,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6854 states. [2022-01-10 08:23:07,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6854 to 6844. [2022-01-10 08:23:07,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6844 states, 5579 states have (on average 1.256318336619466) internal successors, (7009), 5719 states have internal predecessors, (7009), 639 states have call successors, (639), 433 states have call predecessors, (639), 624 states have return successors, (1058), 700 states have call predecessors, (1058), 637 states have call successors, (1058) [2022-01-10 08:23:07,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6844 states to 6844 states and 8706 transitions. [2022-01-10 08:23:07,762 INFO L78 Accepts]: Start accepts. Automaton has 6844 states and 8706 transitions. Word has length 128 [2022-01-10 08:23:07,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:07,763 INFO L470 AbstractCegarLoop]: Abstraction has 6844 states and 8706 transitions. [2022-01-10 08:23:07,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 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) [2022-01-10 08:23:07,763 INFO L276 IsEmpty]: Start isEmpty. Operand 6844 states and 8706 transitions. [2022-01-10 08:23:07,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 08:23:07,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:07,772 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:07,785 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 08:23:07,979 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 08:23:07,980 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:07,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:07,980 INFO L85 PathProgramCache]: Analyzing trace with hash 280499742, now seen corresponding path program 1 times [2022-01-10 08:23:07,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:07,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538899113] [2022-01-10 08:23:07,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:07,981 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:07,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:07,982 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 08:23:07,983 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 08:23:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:08,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:23:08,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:08,242 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 08:23:08,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:08,243 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:08,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538899113] [2022-01-10 08:23:08,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538899113] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:08,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:08,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:08,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649113706] [2022-01-10 08:23:08,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:08,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:23:08,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:08,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:23:08,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:23:08,244 INFO L87 Difference]: Start difference. First operand 6844 states and 8706 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:23:08,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:08,674 INFO L93 Difference]: Finished difference Result 10720 states and 13294 transitions. [2022-01-10 08:23:08,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:23:08,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 128 [2022-01-10 08:23:08,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:08,692 INFO L225 Difference]: With dead ends: 10720 [2022-01-10 08:23:08,692 INFO L226 Difference]: Without dead ends: 8720 [2022-01-10 08:23:08,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 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 08:23:08,699 INFO L933 BasicCegarLoop]: 420 mSDtfsCounter, 421 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:08,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 789 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:23:08,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8720 states. [2022-01-10 08:23:09,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8720 to 8718. [2022-01-10 08:23:09,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8718 states, 7242 states have (on average 1.235156034244684) internal successors, (8945), 7395 states have internal predecessors, (8945), 750 states have call successors, (750), 521 states have call predecessors, (750), 724 states have return successors, (1205), 811 states have call predecessors, (1205), 748 states have call successors, (1205) [2022-01-10 08:23:09,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8718 states to 8718 states and 10900 transitions. [2022-01-10 08:23:09,048 INFO L78 Accepts]: Start accepts. Automaton has 8718 states and 10900 transitions. Word has length 128 [2022-01-10 08:23:09,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:09,048 INFO L470 AbstractCegarLoop]: Abstraction has 8718 states and 10900 transitions. [2022-01-10 08:23:09,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:23:09,049 INFO L276 IsEmpty]: Start isEmpty. Operand 8718 states and 10900 transitions. [2022-01-10 08:23:09,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 08:23:09,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:09,059 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:09,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 08:23:09,265 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 08:23:09,266 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:09,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:09,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1001672544, now seen corresponding path program 1 times [2022-01-10 08:23:09,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:09,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372930119] [2022-01-10 08:23:09,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:09,267 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:09,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:09,268 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 08:23:09,277 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 08:23:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:09,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:09,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:09,512 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 08:23:09,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:09,512 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:09,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372930119] [2022-01-10 08:23:09,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372930119] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:09,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:09,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:23:09,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752357739] [2022-01-10 08:23:09,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:09,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:09,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:09,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:09,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:09,513 INFO L87 Difference]: Start difference. First operand 8718 states and 10900 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:23:09,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:09,763 INFO L93 Difference]: Finished difference Result 11694 states and 14387 transitions. [2022-01-10 08:23:09,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:09,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2022-01-10 08:23:09,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:09,779 INFO L225 Difference]: With dead ends: 11694 [2022-01-10 08:23:09,779 INFO L226 Difference]: Without dead ends: 7820 [2022-01-10 08:23:09,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 126 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 08:23:09,786 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 195 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 516 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 08:23:09,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 516 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:09,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7820 states. [2022-01-10 08:23:10,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7820 to 7820. [2022-01-10 08:23:10,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7820 states, 6447 states have (on average 1.2427485652241352) internal successors, (8012), 6595 states have internal predecessors, (8012), 693 states have call successors, (693), 477 states have call predecessors, (693), 678 states have return successors, (1134), 756 states have call predecessors, (1134), 691 states have call successors, (1134) [2022-01-10 08:23:10,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7820 states to 7820 states and 9839 transitions. [2022-01-10 08:23:10,134 INFO L78 Accepts]: Start accepts. Automaton has 7820 states and 9839 transitions. Word has length 128 [2022-01-10 08:23:10,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:10,134 INFO L470 AbstractCegarLoop]: Abstraction has 7820 states and 9839 transitions. [2022-01-10 08:23:10,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:23:10,135 INFO L276 IsEmpty]: Start isEmpty. Operand 7820 states and 9839 transitions. [2022-01-10 08:23:10,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 08:23:10,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:10,145 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:10,167 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 08:23:10,351 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 08:23:10,351 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:10,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:10,352 INFO L85 PathProgramCache]: Analyzing trace with hash -2035664394, now seen corresponding path program 1 times [2022-01-10 08:23:10,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:10,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286897874] [2022-01-10 08:23:10,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:10,352 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:10,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:10,353 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 08:23:10,361 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 08:23:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:10,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:23:10,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 08:23:10,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:10,639 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:10,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286897874] [2022-01-10 08:23:10,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286897874] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:10,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:10,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:10,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243240143] [2022-01-10 08:23:10,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:10,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:23:10,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:10,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:23:10,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:23:10,641 INFO L87 Difference]: Start difference. First operand 7820 states and 9839 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:23:11,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:11,167 INFO L93 Difference]: Finished difference Result 13282 states and 16249 transitions. [2022-01-10 08:23:11,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:23:11,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 129 [2022-01-10 08:23:11,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:11,194 INFO L225 Difference]: With dead ends: 13282 [2022-01-10 08:23:11,194 INFO L226 Difference]: Without dead ends: 10306 [2022-01-10 08:23:11,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 127 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 08:23:11,202 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 421 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:11,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 646 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:23:11,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10306 states. [2022-01-10 08:23:11,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10306 to 10304. [2022-01-10 08:23:11,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10304 states, 8647 states have (on average 1.2221579738637678) internal successors, (10568), 8815 states have internal predecessors, (10568), 839 states have call successors, (839), 593 states have call predecessors, (839), 816 states have return successors, (1326), 904 states have call predecessors, (1326), 837 states have call successors, (1326) [2022-01-10 08:23:11,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10304 states to 10304 states and 12733 transitions. [2022-01-10 08:23:11,618 INFO L78 Accepts]: Start accepts. Automaton has 10304 states and 12733 transitions. Word has length 129 [2022-01-10 08:23:11,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:11,619 INFO L470 AbstractCegarLoop]: Abstraction has 10304 states and 12733 transitions. [2022-01-10 08:23:11,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:23:11,619 INFO L276 IsEmpty]: Start isEmpty. Operand 10304 states and 12733 transitions. [2022-01-10 08:23:11,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 08:23:11,629 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:11,629 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:11,637 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 08:23:11,837 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 08:23:11,838 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:11,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:11,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1002002278, now seen corresponding path program 1 times [2022-01-10 08:23:11,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:11,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664878733] [2022-01-10 08:23:11,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:11,839 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:11,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:11,839 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 08:23:11,840 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 08:23:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:11,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:23:11,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:12,091 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 08:23:12,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:12,091 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:12,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664878733] [2022-01-10 08:23:12,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664878733] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:12,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:12,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:12,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105299367] [2022-01-10 08:23:12,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:12,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:23:12,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:12,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:23:12,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:23:12,092 INFO L87 Difference]: Start difference. First operand 10304 states and 12733 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:23:12,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:12,735 INFO L93 Difference]: Finished difference Result 20252 states and 24378 transitions. [2022-01-10 08:23:12,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:23:12,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 130 [2022-01-10 08:23:12,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:12,770 INFO L225 Difference]: With dead ends: 20252 [2022-01-10 08:23:12,770 INFO L226 Difference]: Without dead ends: 14792 [2022-01-10 08:23:12,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 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 08:23:12,785 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 410 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:12,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 726 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:23:12,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14792 states. [2022-01-10 08:23:13,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14792 to 14790. [2022-01-10 08:23:13,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14790 states, 12594 states have (on average 1.2022391615054788) internal successors, (15141), 12811 states have internal predecessors, (15141), 1110 states have call successors, (1110), 801 states have call predecessors, (1110), 1084 states have return successors, (1705), 1187 states have call predecessors, (1705), 1108 states have call successors, (1705) [2022-01-10 08:23:13,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14790 states to 14790 states and 17956 transitions. [2022-01-10 08:23:13,389 INFO L78 Accepts]: Start accepts. Automaton has 14790 states and 17956 transitions. Word has length 130 [2022-01-10 08:23:13,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:13,390 INFO L470 AbstractCegarLoop]: Abstraction has 14790 states and 17956 transitions. [2022-01-10 08:23:13,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:23:13,390 INFO L276 IsEmpty]: Start isEmpty. Operand 14790 states and 17956 transitions. [2022-01-10 08:23:13,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 08:23:13,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:13,400 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:13,406 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 08:23:13,600 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 08:23:13,600 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:13,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:13,601 INFO L85 PathProgramCache]: Analyzing trace with hash 2010792732, now seen corresponding path program 1 times [2022-01-10 08:23:13,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:13,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77747187] [2022-01-10 08:23:13,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:13,601 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:13,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:13,602 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 08:23:13,603 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 08:23:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:13,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:13,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:13,798 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 08:23:13,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:13,798 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:13,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77747187] [2022-01-10 08:23:13,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77747187] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:13,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:13,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:23:13,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348827048] [2022-01-10 08:23:13,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:13,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:13,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:13,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:13,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:13,800 INFO L87 Difference]: Start difference. First operand 14790 states and 17956 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:23:14,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:14,479 INFO L93 Difference]: Finished difference Result 24732 states and 29553 transitions. [2022-01-10 08:23:14,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:14,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 130 [2022-01-10 08:23:14,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:14,513 INFO L225 Difference]: With dead ends: 24732 [2022-01-10 08:23:14,513 INFO L226 Difference]: Without dead ends: 14786 [2022-01-10 08:23:14,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 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 08:23:14,533 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 192 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 515 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 08:23:14,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 515 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:14,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14786 states. [2022-01-10 08:23:15,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14786 to 14786. [2022-01-10 08:23:15,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14786 states, 12593 states have (on average 1.202175811959025) internal successors, (15139), 12809 states have internal predecessors, (15139), 1107 states have call successors, (1107), 801 states have call predecessors, (1107), 1084 states have return successors, (1702), 1184 states have call predecessors, (1702), 1105 states have call successors, (1702) [2022-01-10 08:23:15,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14786 states to 14786 states and 17948 transitions. [2022-01-10 08:23:15,163 INFO L78 Accepts]: Start accepts. Automaton has 14786 states and 17948 transitions. Word has length 130 [2022-01-10 08:23:15,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:15,164 INFO L470 AbstractCegarLoop]: Abstraction has 14786 states and 17948 transitions. [2022-01-10 08:23:15,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:23:15,164 INFO L276 IsEmpty]: Start isEmpty. Operand 14786 states and 17948 transitions. [2022-01-10 08:23:15,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 08:23:15,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:15,172 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:15,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-01-10 08:23:15,373 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 08:23:15,373 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:15,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:15,373 INFO L85 PathProgramCache]: Analyzing trace with hash -137422982, now seen corresponding path program 1 times [2022-01-10 08:23:15,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:15,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463011147] [2022-01-10 08:23:15,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:15,374 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:15,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:15,376 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 08:23:15,376 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 08:23:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:15,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:15,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 08:23:15,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:15,578 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:15,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463011147] [2022-01-10 08:23:15,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463011147] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:15,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:15,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:23:15,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075355350] [2022-01-10 08:23:15,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:15,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:15,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:15,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:15,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:15,579 INFO L87 Difference]: Start difference. First operand 14786 states and 17948 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2022-01-10 08:23:16,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:16,370 INFO L93 Difference]: Finished difference Result 32411 states and 38687 transitions. [2022-01-10 08:23:16,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:16,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) Word has length 131 [2022-01-10 08:23:16,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:16,433 INFO L225 Difference]: With dead ends: 32411 [2022-01-10 08:23:16,433 INFO L226 Difference]: Without dead ends: 18670 [2022-01-10 08:23:16,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 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 08:23:16,462 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 160 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 876 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 08:23:16,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 876 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:16,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18670 states. [2022-01-10 08:23:17,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18670 to 18670. [2022-01-10 08:23:17,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18670 states, 16017 states have (on average 1.1922332521695698) internal successors, (19096), 16255 states have internal predecessors, (19096), 1351 states have call successors, (1351), 985 states have call predecessors, (1351), 1300 states have return successors, (2044), 1438 states have call predecessors, (2044), 1349 states have call successors, (2044) [2022-01-10 08:23:17,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18670 states to 18670 states and 22491 transitions. [2022-01-10 08:23:17,291 INFO L78 Accepts]: Start accepts. Automaton has 18670 states and 22491 transitions. Word has length 131 [2022-01-10 08:23:17,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:17,291 INFO L470 AbstractCegarLoop]: Abstraction has 18670 states and 22491 transitions. [2022-01-10 08:23:17,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2022-01-10 08:23:17,291 INFO L276 IsEmpty]: Start isEmpty. Operand 18670 states and 22491 transitions. [2022-01-10 08:23:17,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-10 08:23:17,303 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:17,303 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 08:23:17,310 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 08:23:17,507 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 08:23:17,508 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:17,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:17,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1996008037, now seen corresponding path program 1 times [2022-01-10 08:23:17,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:17,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852554738] [2022-01-10 08:23:17,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:17,509 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:17,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:17,509 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 08:23:17,510 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 08:23:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:17,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:23:17,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:17,751 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 08:23:17,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:17,752 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:17,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852554738] [2022-01-10 08:23:17,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852554738] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:17,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:17,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:23:17,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852624121] [2022-01-10 08:23:17,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:17,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:23:17,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:17,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:23:17,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:23:17,753 INFO L87 Difference]: Start difference. First operand 18670 states and 22491 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 08:23:18,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:18,537 INFO L93 Difference]: Finished difference Result 23516 states and 28935 transitions. [2022-01-10 08:23:18,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:23:18,537 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 08:23:18,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:18,574 INFO L225 Difference]: With dead ends: 23516 [2022-01-10 08:23:18,574 INFO L226 Difference]: Without dead ends: 18736 [2022-01-10 08:23:18,586 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 08:23:18,587 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 37 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1781 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 08:23:18,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 1781 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:18,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18736 states. [2022-01-10 08:23:19,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18736 to 18190. [2022-01-10 08:23:19,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18190 states, 15705 states have (on average 1.1875198981216173) internal successors, (18650), 15882 states have internal predecessors, (18650), 1255 states have call successors, (1255), 934 states have call predecessors, (1255), 1228 states have return successors, (1901), 1382 states have call predecessors, (1901), 1253 states have call successors, (1901) [2022-01-10 08:23:19,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18190 states to 18190 states and 21806 transitions. [2022-01-10 08:23:19,477 INFO L78 Accepts]: Start accepts. Automaton has 18190 states and 21806 transitions. Word has length 155 [2022-01-10 08:23:19,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:19,477 INFO L470 AbstractCegarLoop]: Abstraction has 18190 states and 21806 transitions. [2022-01-10 08:23:19,477 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 08:23:19,477 INFO L276 IsEmpty]: Start isEmpty. Operand 18190 states and 21806 transitions. [2022-01-10 08:23:19,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 08:23:19,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:19,488 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 08:23:19,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-01-10 08:23:19,689 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 08:23:19,689 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:19,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:19,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1627021219, now seen corresponding path program 1 times [2022-01-10 08:23:19,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:19,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064040678] [2022-01-10 08:23:19,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:19,690 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:19,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:19,691 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 08:23:19,691 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 08:23:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:19,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:19,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:19,922 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 08:23:19,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:19,922 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:19,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064040678] [2022-01-10 08:23:19,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064040678] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:19,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:19,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:23:19,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047822333] [2022-01-10 08:23:19,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:19,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:19,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:19,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:19,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:19,923 INFO L87 Difference]: Start difference. First operand 18190 states and 21806 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 08:23:20,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:20,502 INFO L93 Difference]: Finished difference Result 20752 states and 25124 transitions. [2022-01-10 08:23:20,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:20,502 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 08:23:20,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:20,536 INFO L225 Difference]: With dead ends: 20752 [2022-01-10 08:23:20,536 INFO L226 Difference]: Without dead ends: 16496 [2022-01-10 08:23:20,547 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 08:23:20,547 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 148 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 557 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 08:23:20,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 557 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:20,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16496 states. [2022-01-10 08:23:21,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16496 to 16496. [2022-01-10 08:23:21,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16496 states, 14353 states have (on average 1.1794746742841218) internal successors, (16929), 14504 states have internal predecessors, (16929), 1079 states have call successors, (1079), 822 states have call predecessors, (1079), 1062 states have return successors, (1581), 1170 states have call predecessors, (1581), 1077 states have call successors, (1581) [2022-01-10 08:23:21,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16496 states to 16496 states and 19589 transitions. [2022-01-10 08:23:21,202 INFO L78 Accepts]: Start accepts. Automaton has 16496 states and 19589 transitions. Word has length 156 [2022-01-10 08:23:21,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:21,202 INFO L470 AbstractCegarLoop]: Abstraction has 16496 states and 19589 transitions. [2022-01-10 08:23:21,202 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 08:23:21,203 INFO L276 IsEmpty]: Start isEmpty. Operand 16496 states and 19589 transitions. [2022-01-10 08:23:21,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 08:23:21,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:21,210 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 08:23:21,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-01-10 08:23:21,416 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 08:23:21,417 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:21,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:21,417 INFO L85 PathProgramCache]: Analyzing trace with hash -2104949226, now seen corresponding path program 1 times [2022-01-10 08:23:21,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:21,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144820560] [2022-01-10 08:23:21,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:21,417 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:21,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:21,418 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 08:23:21,419 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 08:23:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:21,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:21,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:21,669 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 08:23:21,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:21,669 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:21,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144820560] [2022-01-10 08:23:21,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144820560] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:21,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:21,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:23:21,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641839022] [2022-01-10 08:23:21,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:21,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:21,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:21,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:21,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:21,670 INFO L87 Difference]: Start difference. First operand 16496 states and 19589 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 08:23:22,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:22,307 INFO L93 Difference]: Finished difference Result 20618 states and 25072 transitions. [2022-01-10 08:23:22,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:22,307 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 08:23:22,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:22,343 INFO L225 Difference]: With dead ends: 20618 [2022-01-10 08:23:22,343 INFO L226 Difference]: Without dead ends: 18280 [2022-01-10 08:23:22,353 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 08:23:22,354 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 68 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 719 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 08:23:22,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 719 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:22,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18280 states. [2022-01-10 08:23:23,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18280 to 18252. [2022-01-10 08:23:23,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18252 states, 15771 states have (on average 1.1893982626339483) internal successors, (18758), 15958 states have internal predecessors, (18758), 1235 states have call successors, (1235), 930 states have call predecessors, (1235), 1244 states have return successors, (1890), 1364 states have call predecessors, (1890), 1233 states have call successors, (1890) [2022-01-10 08:23:23,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18252 states to 18252 states and 21883 transitions. [2022-01-10 08:23:23,084 INFO L78 Accepts]: Start accepts. Automaton has 18252 states and 21883 transitions. Word has length 159 [2022-01-10 08:23:23,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:23,085 INFO L470 AbstractCegarLoop]: Abstraction has 18252 states and 21883 transitions. [2022-01-10 08:23:23,085 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 08:23:23,085 INFO L276 IsEmpty]: Start isEmpty. Operand 18252 states and 21883 transitions. [2022-01-10 08:23:23,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 08:23:23,094 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:23,095 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 08:23:23,102 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 08:23:23,301 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 08:23:23,302 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:23,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:23,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1627452603, now seen corresponding path program 1 times [2022-01-10 08:23:23,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:23,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594633332] [2022-01-10 08:23:23,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:23,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:23,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:23,303 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 08:23:23,304 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 08:23:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:23,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:23,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:23,535 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 08:23:23,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:23,535 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:23,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594633332] [2022-01-10 08:23:23,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594633332] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:23,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:23,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:23:23,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787650601] [2022-01-10 08:23:23,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:23,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:23,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:23,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:23,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:23,536 INFO L87 Difference]: Start difference. First operand 18252 states and 21883 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 08:23:24,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:24,330 INFO L93 Difference]: Finished difference Result 25984 states and 32440 transitions. [2022-01-10 08:23:24,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:24,331 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 08:23:24,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:24,380 INFO L225 Difference]: With dead ends: 25984 [2022-01-10 08:23:24,380 INFO L226 Difference]: Without dead ends: 21890 [2022-01-10 08:23:24,395 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 08:23:24,396 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 102 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 768 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 08:23:24,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 768 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:24,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21890 states. [2022-01-10 08:23:25,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21890 to 21814. [2022-01-10 08:23:25,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21814 states, 18633 states have (on average 1.1981967477056834) internal successors, (22326), 18870 states have internal predecessors, (22326), 1571 states have call successors, (1571), 1164 states have call predecessors, (1571), 1608 states have return successors, (2688), 1780 states have call predecessors, (2688), 1569 states have call successors, (2688) [2022-01-10 08:23:25,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21814 states to 21814 states and 26585 transitions. [2022-01-10 08:23:25,340 INFO L78 Accepts]: Start accepts. Automaton has 21814 states and 26585 transitions. Word has length 160 [2022-01-10 08:23:25,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:25,341 INFO L470 AbstractCegarLoop]: Abstraction has 21814 states and 26585 transitions. [2022-01-10 08:23:25,341 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 08:23:25,341 INFO L276 IsEmpty]: Start isEmpty. Operand 21814 states and 26585 transitions. [2022-01-10 08:23:25,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-10 08:23:25,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:25,354 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 08:23:25,360 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 08:23:25,560 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 08:23:25,560 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:25,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:25,561 INFO L85 PathProgramCache]: Analyzing trace with hash -842578124, now seen corresponding path program 1 times [2022-01-10 08:23:25,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:25,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139103169] [2022-01-10 08:23:25,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:25,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:25,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:25,562 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 08:23:25,564 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 08:23:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:25,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:25,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:25,823 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 08:23:25,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:25,824 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:25,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139103169] [2022-01-10 08:23:25,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139103169] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:25,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:25,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:23:25,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929814042] [2022-01-10 08:23:25,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:25,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:25,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:25,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:25,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:25,825 INFO L87 Difference]: Start difference. First operand 21814 states and 26585 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 08:23:26,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:26,851 INFO L93 Difference]: Finished difference Result 36984 states and 46800 transitions. [2022-01-10 08:23:26,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:26,851 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 08:23:26,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:26,906 INFO L225 Difference]: With dead ends: 36984 [2022-01-10 08:23:26,906 INFO L226 Difference]: Without dead ends: 29328 [2022-01-10 08:23:26,919 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 08:23:26,919 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 72 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 724 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 08:23:26,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 724 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:26,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29328 states. [2022-01-10 08:23:27,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29328 to 29324. [2022-01-10 08:23:28,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29324 states, 24666 states have (on average 1.2104110921916809) internal successors, (29856), 25032 states have internal predecessors, (29856), 2279 states have call successors, (2279), 1650 states have call predecessors, (2279), 2377 states have return successors, (4162), 2642 states have call predecessors, (4162), 2277 states have call successors, (4162) [2022-01-10 08:23:28,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29324 states to 29324 states and 36297 transitions. [2022-01-10 08:23:28,069 INFO L78 Accepts]: Start accepts. Automaton has 29324 states and 36297 transitions. Word has length 161 [2022-01-10 08:23:28,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:28,069 INFO L470 AbstractCegarLoop]: Abstraction has 29324 states and 36297 transitions. [2022-01-10 08:23:28,069 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 08:23:28,069 INFO L276 IsEmpty]: Start isEmpty. Operand 29324 states and 36297 transitions. [2022-01-10 08:23:28,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-10 08:23:28,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:28,174 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:23:28,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-01-10 08:23:28,375 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 08:23:28,375 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:28,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:28,376 INFO L85 PathProgramCache]: Analyzing trace with hash 994811713, now seen corresponding path program 1 times [2022-01-10 08:23:28,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:28,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517289698] [2022-01-10 08:23:28,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:28,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:28,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:28,377 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 08:23:28,378 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 08:23:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:28,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:28,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:28,631 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 08:23:28,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:28,631 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:28,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517289698] [2022-01-10 08:23:28,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517289698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:28,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:28,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:28,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143652872] [2022-01-10 08:23:28,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:28,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:28,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:28,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:28,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:28,633 INFO L87 Difference]: Start difference. First operand 29324 states and 36297 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 3 states have internal predecessors, (89), 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 08:23:30,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:30,541 INFO L93 Difference]: Finished difference Result 58877 states and 74951 transitions. [2022-01-10 08:23:30,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:23:30,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 3 states have internal predecessors, (89), 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 08:23:30,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:30,640 INFO L225 Difference]: With dead ends: 58877 [2022-01-10 08:23:30,641 INFO L226 Difference]: Without dead ends: 43396 [2022-01-10 08:23:30,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-10 08:23:30,668 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 489 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:30,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 729 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:23:30,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43396 states. [2022-01-10 08:23:32,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43396 to 43220. [2022-01-10 08:23:32,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43220 states, 35656 states have (on average 1.220860444245008) internal successors, (43531), 36245 states have internal predecessors, (43531), 3674 states have call successors, (3674), 2601 states have call predecessors, (3674), 3888 states have return successors, (6956), 4374 states have call predecessors, (6956), 3672 states have call successors, (6956) [2022-01-10 08:23:32,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43220 states to 43220 states and 54161 transitions. [2022-01-10 08:23:32,576 INFO L78 Accepts]: Start accepts. Automaton has 43220 states and 54161 transitions. Word has length 166 [2022-01-10 08:23:32,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:32,576 INFO L470 AbstractCegarLoop]: Abstraction has 43220 states and 54161 transitions. [2022-01-10 08:23:32,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 3 states have internal predecessors, (89), 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 08:23:32,577 INFO L276 IsEmpty]: Start isEmpty. Operand 43220 states and 54161 transitions. [2022-01-10 08:23:32,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 08:23:32,592 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:32,593 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:32,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-01-10 08:23:32,793 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 08:23:32,793 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:32,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:32,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1682321961, now seen corresponding path program 1 times [2022-01-10 08:23:32,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:32,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550152011] [2022-01-10 08:23:32,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:32,794 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:32,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:32,795 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 08:23:32,796 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 08:23:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:33,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:33,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:33,227 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 08:23:33,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:33,228 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:33,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550152011] [2022-01-10 08:23:33,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550152011] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:33,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:33,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:23:33,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368347879] [2022-01-10 08:23:33,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:33,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:33,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:33,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:33,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:33,229 INFO L87 Difference]: Start difference. First operand 43220 states and 54161 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 08:23:35,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:35,074 INFO L93 Difference]: Finished difference Result 60929 states and 74909 transitions. [2022-01-10 08:23:35,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:35,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 168 [2022-01-10 08:23:35,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:35,164 INFO L225 Difference]: With dead ends: 60929 [2022-01-10 08:23:35,164 INFO L226 Difference]: Without dead ends: 47102 [2022-01-10 08:23:35,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 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 08:23:35,185 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 243 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 546 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 08:23:35,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 546 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:35,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47102 states. [2022-01-10 08:23:37,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47102 to 47030. [2022-01-10 08:23:37,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47030 states, 39010 states have (on average 1.2126890540886952) internal successors, (47307), 39619 states have internal predecessors, (47307), 3918 states have call successors, (3918), 2785 states have call predecessors, (3918), 4100 states have return successors, (7264), 4626 states have call predecessors, (7264), 3916 states have call successors, (7264) [2022-01-10 08:23:37,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47030 states to 47030 states and 58489 transitions. [2022-01-10 08:23:37,309 INFO L78 Accepts]: Start accepts. Automaton has 47030 states and 58489 transitions. Word has length 168 [2022-01-10 08:23:37,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:37,309 INFO L470 AbstractCegarLoop]: Abstraction has 47030 states and 58489 transitions. [2022-01-10 08:23:37,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 08:23:37,309 INFO L276 IsEmpty]: Start isEmpty. Operand 47030 states and 58489 transitions. [2022-01-10 08:23:37,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-10 08:23:37,334 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:37,334 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:23:37,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-01-10 08:23:37,535 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 08:23:37,535 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:37,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:37,536 INFO L85 PathProgramCache]: Analyzing trace with hash -3125209, now seen corresponding path program 1 times [2022-01-10 08:23:37,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:37,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588136600] [2022-01-10 08:23:37,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:37,536 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:37,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:37,537 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 08:23:37,537 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 08:23:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:37,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:37,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:37,827 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 08:23:37,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:37,828 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:37,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588136600] [2022-01-10 08:23:37,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588136600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:37,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:37,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:37,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246003954] [2022-01-10 08:23:37,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:37,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:23:37,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:37,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:23:37,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:23:37,829 INFO L87 Difference]: Start difference. First operand 47030 states and 58489 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 08:23:39,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:39,517 INFO L93 Difference]: Finished difference Result 64658 states and 81586 transitions. [2022-01-10 08:23:39,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:23:39,517 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 08:23:39,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:39,592 INFO L225 Difference]: With dead ends: 64658 [2022-01-10 08:23:39,592 INFO L226 Difference]: Without dead ends: 35323 [2022-01-10 08:23:39,628 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 08:23:39,629 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 419 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:39,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 574 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:23:39,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35323 states. [2022-01-10 08:23:41,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35323 to 35323. [2022-01-10 08:23:41,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35323 states, 29879 states have (on average 1.2012115532648349) internal successors, (35891), 30254 states have internal predecessors, (35891), 2694 states have call successors, (2694), 1889 states have call predecessors, (2694), 2748 states have return successors, (4644), 3180 states have call predecessors, (4644), 2692 states have call successors, (4644) [2022-01-10 08:23:41,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35323 states to 35323 states and 43229 transitions. [2022-01-10 08:23:41,406 INFO L78 Accepts]: Start accepts. Automaton has 35323 states and 43229 transitions. Word has length 185 [2022-01-10 08:23:41,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:41,407 INFO L470 AbstractCegarLoop]: Abstraction has 35323 states and 43229 transitions. [2022-01-10 08:23:41,407 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 08:23:41,407 INFO L276 IsEmpty]: Start isEmpty. Operand 35323 states and 43229 transitions. [2022-01-10 08:23:41,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-10 08:23:41,423 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:41,423 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:23:41,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-01-10 08:23:41,625 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 08:23:41,625 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:41,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:41,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1114323395, now seen corresponding path program 2 times [2022-01-10 08:23:41,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:41,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408410167] [2022-01-10 08:23:41,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 08:23:41,627 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:41,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:41,628 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 08:23:41,630 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 08:23:41,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 08:23:41,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 08:23:41,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:41,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:41,874 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 08:23:41,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:41,875 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:41,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408410167] [2022-01-10 08:23:41,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408410167] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:41,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:41,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:23:41,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194337992] [2022-01-10 08:23:41,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:41,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:41,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:41,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:41,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:41,876 INFO L87 Difference]: Start difference. First operand 35323 states and 43229 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 08:23:44,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:44,173 INFO L93 Difference]: Finished difference Result 69789 states and 87689 transitions. [2022-01-10 08:23:44,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:44,174 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 08:23:44,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:44,324 INFO L225 Difference]: With dead ends: 69789 [2022-01-10 08:23:44,325 INFO L226 Difference]: Without dead ends: 52258 [2022-01-10 08:23:44,362 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 08:23:44,363 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 329 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 589 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 08:23:44,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 589 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:44,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52258 states. [2022-01-10 08:23:46,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52258 to 52081. [2022-01-10 08:23:46,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52081 states, 43369 states have (on average 1.2144388849177985) internal successors, (52669), 43910 states have internal predecessors, (52669), 4296 states have call successors, (4296), 2931 states have call predecessors, (4296), 4414 states have return successors, (7725), 5240 states have call predecessors, (7725), 4294 states have call successors, (7725) [2022-01-10 08:23:46,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52081 states to 52081 states and 64690 transitions. [2022-01-10 08:23:46,938 INFO L78 Accepts]: Start accepts. Automaton has 52081 states and 64690 transitions. Word has length 185 [2022-01-10 08:23:46,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:46,938 INFO L470 AbstractCegarLoop]: Abstraction has 52081 states and 64690 transitions. [2022-01-10 08:23:46,938 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 08:23:46,938 INFO L276 IsEmpty]: Start isEmpty. Operand 52081 states and 64690 transitions. [2022-01-10 08:23:46,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-10 08:23:46,952 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:46,952 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 08:23:46,958 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 08:23:47,155 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 08:23:47,155 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:47,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:47,156 INFO L85 PathProgramCache]: Analyzing trace with hash 61468603, now seen corresponding path program 1 times [2022-01-10 08:23:47,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:47,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855988451] [2022-01-10 08:23:47,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:47,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:47,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:47,157 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 08:23:47,158 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 08:23:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:47,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:47,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:47,531 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 08:23:47,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:47,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:47,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855988451] [2022-01-10 08:23:47,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855988451] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:47,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:47,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:23:47,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062250365] [2022-01-10 08:23:47,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:47,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:47,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:47,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:47,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:47,533 INFO L87 Difference]: Start difference. First operand 52081 states and 64690 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 08:23:49,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:49,552 INFO L93 Difference]: Finished difference Result 86145 states and 108420 transitions. [2022-01-10 08:23:49,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:49,553 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 08:23:49,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:49,678 INFO L225 Difference]: With dead ends: 86145 [2022-01-10 08:23:49,679 INFO L226 Difference]: Without dead ends: 51807 [2022-01-10 08:23:49,720 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 08:23:49,720 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 115 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 762 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 08:23:49,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 762 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:49,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51807 states. [2022-01-10 08:23:51,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51807 to 51803. [2022-01-10 08:23:52,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51803 states, 43109 states have (on average 1.2016516272704076) internal successors, (51802), 43714 states have internal predecessors, (51802), 4287 states have call successors, (4287), 2922 states have call predecessors, (4287), 4405 states have return successors, (6943), 5167 states have call predecessors, (6943), 4285 states have call successors, (6943) [2022-01-10 08:23:52,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51803 states to 51803 states and 63032 transitions. [2022-01-10 08:23:52,158 INFO L78 Accepts]: Start accepts. Automaton has 51803 states and 63032 transitions. Word has length 185 [2022-01-10 08:23:52,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:52,158 INFO L470 AbstractCegarLoop]: Abstraction has 51803 states and 63032 transitions. [2022-01-10 08:23:52,159 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 08:23:52,159 INFO L276 IsEmpty]: Start isEmpty. Operand 51803 states and 63032 transitions. [2022-01-10 08:23:52,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-01-10 08:23:52,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:52,169 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 08:23:52,177 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 08:23:52,377 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 08:23:52,378 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:52,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:52,378 INFO L85 PathProgramCache]: Analyzing trace with hash 364612029, now seen corresponding path program 1 times [2022-01-10 08:23:52,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:52,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021884429] [2022-01-10 08:23:52,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:52,379 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:52,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:52,380 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 08:23:52,380 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 08:23:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:52,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:52,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:52,796 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 08:23:52,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:52,797 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:52,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021884429] [2022-01-10 08:23:52,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021884429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:52,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:52,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:23:52,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141491469] [2022-01-10 08:23:52,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:52,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:52,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:52,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:52,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:52,798 INFO L87 Difference]: Start difference. First operand 51803 states and 63032 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 08:23:53,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:53,880 INFO L93 Difference]: Finished difference Result 56797 states and 69237 transitions. [2022-01-10 08:23:53,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:53,880 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 08:23:53,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:53,913 INFO L225 Difference]: With dead ends: 56797 [2022-01-10 08:23:53,913 INFO L226 Difference]: Without dead ends: 17650 [2022-01-10 08:23:53,952 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 08:23:53,954 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 80 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 654 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 08:23:53,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 654 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:53,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17650 states. [2022-01-10 08:23:54,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17650 to 17650. [2022-01-10 08:23:54,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17650 states, 15585 states have (on average 1.1545075393006095) internal successors, (17993), 15712 states have internal predecessors, (17993), 1076 states have call successors, (1076), 832 states have call predecessors, (1076), 988 states have return successors, (1418), 1106 states have call predecessors, (1418), 1076 states have call successors, (1418) [2022-01-10 08:23:54,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17650 states to 17650 states and 20487 transitions. [2022-01-10 08:23:54,893 INFO L78 Accepts]: Start accepts. Automaton has 17650 states and 20487 transitions. Word has length 191 [2022-01-10 08:23:54,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:54,893 INFO L470 AbstractCegarLoop]: Abstraction has 17650 states and 20487 transitions. [2022-01-10 08:23:54,893 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 08:23:54,893 INFO L276 IsEmpty]: Start isEmpty. Operand 17650 states and 20487 transitions. [2022-01-10 08:23:54,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-01-10 08:23:54,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:54,902 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:54,908 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 08:23:55,103 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 08:23:55,103 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:55,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:55,104 INFO L85 PathProgramCache]: Analyzing trace with hash 615884597, now seen corresponding path program 1 times [2022-01-10 08:23:55,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:55,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347617697] [2022-01-10 08:23:55,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:55,104 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:55,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:55,106 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 08:23:55,106 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 08:23:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:55,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:55,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:55,401 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 08:23:55,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:55,401 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:55,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347617697] [2022-01-10 08:23:55,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347617697] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:55,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:55,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:55,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957687543] [2022-01-10 08:23:55,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:55,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:23:55,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:55,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:23:55,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:23:55,402 INFO L87 Difference]: Start difference. First operand 17650 states and 20487 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 08:23:56,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:56,364 INFO L93 Difference]: Finished difference Result 35492 states and 41316 transitions. [2022-01-10 08:23:56,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:23:56,365 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), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 188 [2022-01-10 08:23:56,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:56,399 INFO L225 Difference]: With dead ends: 35492 [2022-01-10 08:23:56,399 INFO L226 Difference]: Without dead ends: 17856 [2022-01-10 08:23:56,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 186 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 08:23:56,421 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 232 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:56,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 450 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:23:56,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17856 states. [2022-01-10 08:23:57,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17856 to 17856. [2022-01-10 08:23:57,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17856 states, 15767 states have (on average 1.1449863639246527) internal successors, (18053), 15906 states have internal predecessors, (18053), 1076 states have call successors, (1076), 832 states have call predecessors, (1076), 1012 states have return successors, (1316), 1118 states have call predecessors, (1316), 1076 states have call successors, (1316) [2022-01-10 08:23:57,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17856 states to 17856 states and 20445 transitions. [2022-01-10 08:23:57,295 INFO L78 Accepts]: Start accepts. Automaton has 17856 states and 20445 transitions. Word has length 188 [2022-01-10 08:23:57,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:57,295 INFO L470 AbstractCegarLoop]: Abstraction has 17856 states and 20445 transitions. [2022-01-10 08:23:57,295 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), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 08:23:57,295 INFO L276 IsEmpty]: Start isEmpty. Operand 17856 states and 20445 transitions. [2022-01-10 08:23:57,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 08:23:57,303 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:57,303 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:57,310 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 08:23:57,503 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 08:23:57,504 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:57,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:57,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1892607899, now seen corresponding path program 1 times [2022-01-10 08:23:57,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:57,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294956522] [2022-01-10 08:23:57,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:57,504 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:57,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:57,505 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 08:23:57,506 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 08:23:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:57,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:57,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:57,786 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 08:23:57,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:57,786 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:57,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294956522] [2022-01-10 08:23:57,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294956522] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:57,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:57,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:23:57,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260466697] [2022-01-10 08:23:57,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:57,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:57,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:57,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:57,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:57,787 INFO L87 Difference]: Start difference. First operand 17856 states and 20445 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 08:23:58,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:58,594 INFO L93 Difference]: Finished difference Result 31908 states and 36611 transitions. [2022-01-10 08:23:58,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:58,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 189 [2022-01-10 08:23:58,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:58,625 INFO L225 Difference]: With dead ends: 31908 [2022-01-10 08:23:58,625 INFO L226 Difference]: Without dead ends: 17858 [2022-01-10 08:23:58,639 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 08:23:58,639 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 151 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:58,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 550 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:58,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17858 states. [2022-01-10 08:23:59,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17858 to 17856. [2022-01-10 08:23:59,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17856 states, 15767 states have (on average 1.1425762668865351) internal successors, (18015), 15906 states have internal predecessors, (18015), 1076 states have call successors, (1076), 832 states have call predecessors, (1076), 1012 states have return successors, (1310), 1118 states have call predecessors, (1310), 1076 states have call successors, (1310) [2022-01-10 08:23:59,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17856 states to 17856 states and 20401 transitions. [2022-01-10 08:23:59,429 INFO L78 Accepts]: Start accepts. Automaton has 17856 states and 20401 transitions. Word has length 189 [2022-01-10 08:23:59,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:59,430 INFO L470 AbstractCegarLoop]: Abstraction has 17856 states and 20401 transitions. [2022-01-10 08:23:59,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 08:23:59,430 INFO L276 IsEmpty]: Start isEmpty. Operand 17856 states and 20401 transitions. [2022-01-10 08:23:59,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-01-10 08:23:59,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:59,440 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:59,449 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 08:23:59,640 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 08:23:59,641 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:59,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:59,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1830440622, now seen corresponding path program 1 times [2022-01-10 08:23:59,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:59,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351957250] [2022-01-10 08:23:59,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:59,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:59,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:59,643 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 08:23:59,643 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 08:23:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:59,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:59,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:59,999 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-01-10 08:23:59,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:59,999 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:59,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351957250] [2022-01-10 08:23:59,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351957250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:59,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:59,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:23:59,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075390619] [2022-01-10 08:23:59,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:00,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:00,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:00,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:00,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:00,000 INFO L87 Difference]: Start difference. First operand 17856 states and 20401 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)