/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ldv-regression/alt_test.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:53:59,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:53:59,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:53:59,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:53:59,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:53:59,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:53:59,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:53:59,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:53:59,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:53:59,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:53:59,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:53:59,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:53:59,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:53:59,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:53:59,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:53:59,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:53:59,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:53:59,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:53:59,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:53:59,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:53:59,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:53:59,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:53:59,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:53:59,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:53:59,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:53:59,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:53:59,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:53:59,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:53:59,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:53:59,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:53:59,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:53:59,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:53:59,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:53:59,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:53:59,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:53:59,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:53:59,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:53:59,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:53:59,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:53:59,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:53:59,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:53:59,916 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 19:53:59,944 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:53:59,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:53:59,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:53:59,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:53:59,946 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:53:59,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:53:59,947 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:53:59,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:53:59,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:53:59,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:53:59,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:53:59,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:53:59,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:53:59,948 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:53:59,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:53:59,949 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:53:59,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:53:59,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:53:59,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:53:59,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:53:59,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:53:59,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:53:59,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:53:59,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:53:59,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:53:59,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:53:59,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:53:59,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:53:59,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:53:59,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:54:00,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:54:00,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:54:00,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:54:00,449 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:54:00,450 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:54:00,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/alt_test.i [2020-10-27 19:54:00,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39ad82e62/b999c531f1c44ea185cf6f5de5665d51/FLAG9cee1e2c8 [2020-10-27 19:54:01,223 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:54:01,224 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/alt_test.i [2020-10-27 19:54:01,241 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39ad82e62/b999c531f1c44ea185cf6f5de5665d51/FLAG9cee1e2c8 [2020-10-27 19:54:01,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39ad82e62/b999c531f1c44ea185cf6f5de5665d51 [2020-10-27 19:54:01,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:54:01,489 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:54:01,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:54:01,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:54:01,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:54:01,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:54:01" (1/1) ... [2020-10-27 19:54:01,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6549692b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:01, skipping insertion in model container [2020-10-27 19:54:01,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:54:01" (1/1) ... [2020-10-27 19:54:01,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:54:01,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:54:02,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:54:02,098 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:54:02,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:54:02,303 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:54:02,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:02 WrapperNode [2020-10-27 19:54:02,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:54:02,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:54:02,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:54:02,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:54:02,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:02" (1/1) ... [2020-10-27 19:54:02,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:02" (1/1) ... [2020-10-27 19:54:02,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:02" (1/1) ... [2020-10-27 19:54:02,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:02" (1/1) ... [2020-10-27 19:54:02,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:02" (1/1) ... [2020-10-27 19:54:02,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:02" (1/1) ... [2020-10-27 19:54:02,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:02" (1/1) ... [2020-10-27 19:54:02,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:54:02,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:54:02,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:54:02,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:54:02,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:54:02,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:54:02,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:54:02,485 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:54:02,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-10-27 19:54:02,486 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:54:02,486 INFO L138 BoogieDeclarations]: Found implementation of procedure l_malloc [2020-10-27 19:54:02,486 INFO L138 BoogieDeclarations]: Found implementation of procedure l_free [2020-10-27 19:54:02,486 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:54:02,486 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:54:02,486 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:54:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:54:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-10-27 19:54:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-10-27 19:54:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-10-27 19:54:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-10-27 19:54:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-10-27 19:54:02,488 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-10-27 19:54:02,488 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-10-27 19:54:02,488 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-10-27 19:54:02,488 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-10-27 19:54:02,488 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-10-27 19:54:02,488 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-10-27 19:54:02,489 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-10-27 19:54:02,489 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-10-27 19:54:02,489 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-10-27 19:54:02,489 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-10-27 19:54:02,489 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-10-27 19:54:02,489 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-10-27 19:54:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-10-27 19:54:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-10-27 19:54:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-10-27 19:54:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-10-27 19:54:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-10-27 19:54:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-10-27 19:54:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-10-27 19:54:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-10-27 19:54:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-10-27 19:54:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-10-27 19:54:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-10-27 19:54:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-10-27 19:54:02,492 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-10-27 19:54:02,492 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-10-27 19:54:02,492 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-10-27 19:54:02,492 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-10-27 19:54:02,492 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-10-27 19:54:02,492 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-10-27 19:54:02,492 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-10-27 19:54:02,493 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-10-27 19:54:02,493 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-10-27 19:54:02,493 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-27 19:54:02,493 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-10-27 19:54:02,493 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-10-27 19:54:02,493 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-10-27 19:54:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-10-27 19:54:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-10-27 19:54:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-10-27 19:54:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-10-27 19:54:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-10-27 19:54:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-10-27 19:54:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-10-27 19:54:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-10-27 19:54:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-10-27 19:54:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-10-27 19:54:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-10-27 19:54:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-10-27 19:54:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-10-27 19:54:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-10-27 19:54:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-10-27 19:54:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-10-27 19:54:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-10-27 19:54:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-10-27 19:54:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-10-27 19:54:02,497 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-10-27 19:54:02,497 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-10-27 19:54:02,497 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-10-27 19:54:02,497 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-10-27 19:54:02,497 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-10-27 19:54:02,497 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-10-27 19:54:02,497 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-10-27 19:54:02,498 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-10-27 19:54:02,498 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-10-27 19:54:02,498 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-10-27 19:54:02,498 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-10-27 19:54:02,498 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-10-27 19:54:02,498 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-10-27 19:54:02,499 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-10-27 19:54:02,499 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-10-27 19:54:02,499 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-10-27 19:54:02,499 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-10-27 19:54:02,499 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-10-27 19:54:02,499 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-10-27 19:54:02,499 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-10-27 19:54:02,500 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-10-27 19:54:02,500 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-10-27 19:54:02,500 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-10-27 19:54:02,500 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-10-27 19:54:02,500 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-10-27 19:54:02,500 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-10-27 19:54:02,500 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-10-27 19:54:02,501 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-10-27 19:54:02,501 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-10-27 19:54:02,501 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-10-27 19:54:02,501 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-10-27 19:54:02,501 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-10-27 19:54:02,501 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-10-27 19:54:02,501 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-10-27 19:54:02,502 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-10-27 19:54:02,502 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-10-27 19:54:02,502 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-10-27 19:54:02,502 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-10-27 19:54:02,502 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-10-27 19:54:02,502 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-10-27 19:54:02,502 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 19:54:02,503 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 19:54:02,503 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 19:54:02,503 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 19:54:02,503 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 19:54:02,503 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 19:54:02,503 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 19:54:02,503 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 19:54:02,504 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 19:54:02,504 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 19:54:02,504 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 19:54:02,504 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 19:54:02,504 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 19:54:02,504 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 19:54:02,504 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 19:54:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 19:54:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 19:54:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 19:54:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 19:54:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 19:54:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 19:54:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 19:54:02,506 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 19:54:02,506 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 19:54:02,506 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 19:54:02,506 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 19:54:02,506 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 19:54:02,506 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 19:54:02,507 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 19:54:02,507 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 19:54:02,507 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 19:54:02,507 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 19:54:02,507 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 19:54:02,507 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 19:54:02,508 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 19:54:02,508 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 19:54:02,508 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 19:54:02,508 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 19:54:02,508 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 19:54:02,508 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 19:54:02,508 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 19:54:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 19:54:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 19:54:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 19:54:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 19:54:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 19:54:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 19:54:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 19:54:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 19:54:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 19:54:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 19:54:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 19:54:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 19:54:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 19:54:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 19:54:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 19:54:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 19:54:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 19:54:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 19:54:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 19:54:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 19:54:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 19:54:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 19:54:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2020-10-27 19:54:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 19:54:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 19:54:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 19:54:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 19:54:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 19:54:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 19:54:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 19:54:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 19:54:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 19:54:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 19:54:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 19:54:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 19:54:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 19:54:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 19:54:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 19:54:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 19:54:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 19:54:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 19:54:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 19:54:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 19:54:02,515 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 19:54:02,515 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 19:54:02,515 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 19:54:02,515 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 19:54:02,515 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 19:54:02,515 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 19:54:02,516 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 19:54:02,516 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 19:54:02,516 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 19:54:02,516 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 19:54:02,516 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 19:54:02,516 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 19:54:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 19:54:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 19:54:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure posix_openpt [2020-10-27 19:54:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 19:54:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-10-27 19:54:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure l_malloc [2020-10-27 19:54:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure l_free [2020-10-27 19:54:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:54:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 19:54:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:54:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:54:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:54:02,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:54:02,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:54:02,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:54:03,195 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:54:03,196 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 19:54:03,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:54:03 BoogieIcfgContainer [2020-10-27 19:54:03,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:54:03,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:54:03,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:54:03,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:54:03,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:54:01" (1/3) ... [2020-10-27 19:54:03,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a2ddb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:54:03, skipping insertion in model container [2020-10-27 19:54:03,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:02" (2/3) ... [2020-10-27 19:54:03,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a2ddb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:54:03, skipping insertion in model container [2020-10-27 19:54:03,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:54:03" (3/3) ... [2020-10-27 19:54:03,207 INFO L111 eAbstractionObserver]: Analyzing ICFG alt_test.i [2020-10-27 19:54:03,219 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:54:03,225 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:54:03,238 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:54:03,266 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:54:03,266 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:54:03,267 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:54:03,267 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:54:03,267 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:54:03,267 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:54:03,267 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:54:03,267 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:54:03,285 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-27 19:54:03,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 19:54:03,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:54:03,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:54:03,293 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:54:03,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:54:03,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1268395753, now seen corresponding path program 1 times [2020-10-27 19:54:03,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:54:03,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994506034] [2020-10-27 19:54:03,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:54:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:03,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:03,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:03,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:54:03,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:03,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-27 19:54:03,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:03,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:54:03,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 19:54:03,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 19:54:03,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 19:54:04,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:54:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:04,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:04,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:04,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:54:04,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:04,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 19:54:04,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:04,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:54:04,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:54:04,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:54:04,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:04,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:54:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:04,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:04,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:04,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:54:04,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:04,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 19:54:04,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:04,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:54:04,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:54:04,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 19:54:04,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:04,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:54:04,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994506034] [2020-10-27 19:54:04,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:54:04,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 19:54:04,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389649560] [2020-10-27 19:54:04,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:54:04,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:54:04,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:54:04,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:54:04,115 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 5 states. [2020-10-27 19:54:04,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:54:04,288 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2020-10-27 19:54:04,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:54:04,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-27 19:54:04,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:54:04,300 INFO L225 Difference]: With dead ends: 60 [2020-10-27 19:54:04,300 INFO L226 Difference]: Without dead ends: 34 [2020-10-27 19:54:04,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:54:04,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-27 19:54:04,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-27 19:54:04,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 19:54:04,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-27 19:54:04,354 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2020-10-27 19:54:04,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:54:04,354 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-27 19:54:04,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:54:04,354 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-27 19:54:04,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 19:54:04,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:54:04,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:54:04,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:54:04,357 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:54:04,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:54:04,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1010230315, now seen corresponding path program 1 times [2020-10-27 19:54:04,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:54:04,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772440133] [2020-10-27 19:54:04,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:54:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:04,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:04,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:04,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:04,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:54:04,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:54:04,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-27 19:54:04,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:54:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 19:54:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 19:54:04,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:54:04,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:54:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:04,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:04,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:04,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:54:04,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:04,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:54:04,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:04,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:54:04,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:54:04,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:54:04,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:04,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:54:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:04,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:04,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:04,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:04,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:54:04,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:54:04,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 19:54:04,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:04,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:54:04,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:54:04,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:54:04,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:04,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:54:04,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772440133] [2020-10-27 19:54:04,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:54:04,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 19:54:04,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338104527] [2020-10-27 19:54:04,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 19:54:04,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:54:04,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 19:54:05,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 19:54:05,000 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 9 states. [2020-10-27 19:54:05,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:54:05,166 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2020-10-27 19:54:05,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 19:54:05,167 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-10-27 19:54:05,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:54:05,168 INFO L225 Difference]: With dead ends: 47 [2020-10-27 19:54:05,168 INFO L226 Difference]: Without dead ends: 31 [2020-10-27 19:54:05,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-27 19:54:05,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-27 19:54:05,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2020-10-27 19:54:05,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 19:54:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-27 19:54:05,178 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 20 [2020-10-27 19:54:05,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:54:05,178 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-27 19:54:05,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 19:54:05,179 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-27 19:54:05,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 19:54:05,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:54:05,180 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 19:54:05,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:54:05,180 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:54:05,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:54:05,181 INFO L82 PathProgramCache]: Analyzing trace with hash 2003014757, now seen corresponding path program 1 times [2020-10-27 19:54:05,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:54:05,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493301468] [2020-10-27 19:54:05,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:54:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:05,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:05,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:05,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:05,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:05,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 19:54:05,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:54:05,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 756 [2020-10-27 19:54:05,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:05,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:54:05,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 19:54:05,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 19:54:05,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:06,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:54:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:06,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:06,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:06,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:54:06,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:06,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:54:06,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:06,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:54:06,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:54:06,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:54:06,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:06,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:54:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:06,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:06,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:06,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:54:06,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:06,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 19:54:06,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:06,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:54:06,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:54:06,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:54:06,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:06,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 19:54:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:54:06,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:54:06,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:54:06,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:54:06,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:54:06,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 19:54:06,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:54:06,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:54:06,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:54:06,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:54:06,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:54:06,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:54:06,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493301468] [2020-10-27 19:54:06,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:54:06,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 19:54:06,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551480943] [2020-10-27 19:54:06,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 19:54:06,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:54:06,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 19:54:06,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 19:54:06,180 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 9 states. [2020-10-27 19:54:06,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:54:06,534 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-10-27 19:54:06,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 19:54:06,535 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-27 19:54:06,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:54:06,536 INFO L225 Difference]: With dead ends: 42 [2020-10-27 19:54:06,536 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 19:54:06,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 19:54:06,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 19:54:06,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-27 19:54:06,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 19:54:06,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-10-27 19:54:06,545 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2020-10-27 19:54:06,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:54:06,545 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-10-27 19:54:06,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 19:54:06,545 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-10-27 19:54:06,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 19:54:06,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:54:06,546 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 19:54:06,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:54:06,547 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:54:06,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:54:06,547 INFO L82 PathProgramCache]: Analyzing trace with hash -639457104, now seen corresponding path program 1 times [2020-10-27 19:54:06,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:54:06,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850115774] [2020-10-27 19:54:06,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:54:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:54:06,566 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:54:06,567 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:54:06,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:54:06,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:54:06 BoogieIcfgContainer [2020-10-27 19:54:06,590 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:54:06,593 INFO L168 Benchmark]: Toolchain (without parser) took 5108.12 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 124.5 MB in the beginning and 100.0 MB in the end (delta: 24.5 MB). Peak memory consumption was 60.7 MB. Max. memory is 8.0 GB. [2020-10-27 19:54:06,594 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 124.3 MB in the end (delta: 101.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:54:06,594 INFO L168 Benchmark]: CACSL2BoogieTranslator took 811.09 ms. Allocated memory is still 151.0 MB. Free memory was 123.8 MB in the beginning and 116.3 MB in the end (delta: 7.6 MB). Peak memory consumption was 28.2 MB. Max. memory is 8.0 GB. [2020-10-27 19:54:06,595 INFO L168 Benchmark]: Boogie Preprocessor took 80.57 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 113.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:54:06,596 INFO L168 Benchmark]: RCFGBuilder took 810.79 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 59.1 MB in the end (delta: 54.0 MB). Peak memory consumption was 53.5 MB. Max. memory is 8.0 GB. [2020-10-27 19:54:06,597 INFO L168 Benchmark]: TraceAbstraction took 3389.76 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 58.6 MB in the beginning and 100.0 MB in the end (delta: -41.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:54:06,601 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 124.3 MB in the end (delta: 101.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 811.09 ms. Allocated memory is still 151.0 MB. Free memory was 123.8 MB in the beginning and 116.3 MB in the end (delta: 7.6 MB). Peak memory consumption was 28.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 80.57 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 113.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 810.79 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 59.1 MB in the end (delta: 54.0 MB). Peak memory consumption was 53.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3389.76 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 58.6 MB in the beginning and 100.0 MB in the end (delta: -41.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1608] int globalState = 0; [L1614] CALL, EXPR l_malloc(sizeof(int)) [L1621] void *retVal = malloc(size); [L1622] COND TRUE retVal != ((void *)0) [L1623] globalState=1 [L1624] return retVal; [L1614] RET, EXPR l_malloc(sizeof(int)) [L1614] int *a = (int*) l_malloc(sizeof(int)); [L1615] CALL l_free(a) [L1631] COND TRUE ptr!=((void *)0) [L1631] (globalState == 1) ? (0) : __blast_assert () [L1632] globalState = 0 [L1615] RET l_free(a) [L1616] CALL l_free(a) [L1631] COND TRUE ptr!=((void *)0) [L1631] (globalState == 1) ? (0) : __blast_assert () [L1631] CALL __blast_assert () [L1603] CALL reach_error() [L3] __assert_fail("0", "alt_test.i", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.3s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 65 SDtfs, 39 SDslu, 179 SDs, 0 SdLazy, 194 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 6255 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...