/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/alt_test.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:17:11,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:17:11,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:17:11,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:17:11,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:17:11,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:17:11,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:17:11,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:17:11,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:17:11,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:17:11,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:17:11,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:17:11,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:17:11,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:17:11,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:17:11,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:17:11,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:17:11,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:17:11,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:17:11,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:17:11,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:17:11,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:17:11,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:17:11,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:17:11,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:17:11,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:17:11,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:17:11,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:17:11,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:17:11,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:17:11,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:17:11,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:17:11,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:17:11,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:17:11,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:17:11,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:17:11,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:17:11,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:17:11,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:17:11,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:17:11,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:17:11,299 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 [2020-09-24 18:17:11,337 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:17:11,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:17:11,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:17:11,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:17:11,339 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:17:11,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:17:11,340 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:17:11,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:17:11,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:17:11,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:17:11,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:17:11,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:17:11,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:17:11,341 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:17:11,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:17:11,342 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:17:11,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:17:11,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:17:11,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:17:11,343 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:17:11,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:17:11,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:17:11,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:17:11,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:17:11,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:17:11,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:17:11,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:17:11,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:17:11,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:17:11,345 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=true; [2020-09-24 18:17:11,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:17:11,828 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:17:11,833 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:17:11,834 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:17:11,835 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:17:11,836 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/alt_test.i [2020-09-24 18:17:11,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c7b63c96/27f0229f2a6f42058827b47b10be8525/FLAG66bdf6a73 [2020-09-24 18:17:12,564 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:17:12,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/alt_test.i [2020-09-24 18:17:12,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c7b63c96/27f0229f2a6f42058827b47b10be8525/FLAG66bdf6a73 [2020-09-24 18:17:12,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c7b63c96/27f0229f2a6f42058827b47b10be8525 [2020-09-24 18:17:12,819 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:17:12,825 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:17:12,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:17:12,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:17:12,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:17:12,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:17:12" (1/1) ... [2020-09-24 18:17:12,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@493f7546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:17:12, skipping insertion in model container [2020-09-24 18:17:12,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:17:12" (1/1) ... [2020-09-24 18:17:12,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:17:12,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:17:13,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:17:13,552 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:17:13,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:17:13,739 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:17:13,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:17:13 WrapperNode [2020-09-24 18:17:13,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:17:13,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:17:13,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:17:13,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:17:13,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:17:13" (1/1) ... [2020-09-24 18:17:13,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:17:13" (1/1) ... [2020-09-24 18:17:13,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:17:13" (1/1) ... [2020-09-24 18:17:13,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:17:13" (1/1) ... [2020-09-24 18:17:13,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:17:13" (1/1) ... [2020-09-24 18:17:13,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:17:13" (1/1) ... [2020-09-24 18:17:13,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:17:13" (1/1) ... [2020-09-24 18:17:13,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:17:13,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:17:13,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:17:13,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:17:13,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:17:13" (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 [2020-09-24 18:17:13,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:17:13,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:17:13,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-24 18:17:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:17:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure l_malloc [2020-09-24 18:17:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure l_free [2020-09-24 18:17:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:17:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-09-24 18:17:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-09-24 18:17:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-09-24 18:17:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-09-24 18:17:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-09-24 18:17:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-09-24 18:17:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-09-24 18:17:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-09-24 18:17:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-09-24 18:17:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-09-24 18:17:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-09-24 18:17:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-09-24 18:17:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-09-24 18:17:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-09-24 18:17:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-09-24 18:17:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-09-24 18:17:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-09-24 18:17:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-09-24 18:17:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-09-24 18:17:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-09-24 18:17:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-09-24 18:17:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-09-24 18:17:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-09-24 18:17:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-09-24 18:17:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-09-24 18:17:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-09-24 18:17:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-09-24 18:17:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-09-24 18:17:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-09-24 18:17:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-09-24 18:17:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-09-24 18:17:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-09-24 18:17:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-09-24 18:17:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-09-24 18:17:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-09-24 18:17:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-09-24 18:17:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-09-24 18:17:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-09-24 18:17:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 18:17:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-09-24 18:17:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-09-24 18:17:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-09-24 18:17:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-09-24 18:17:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-09-24 18:17:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-09-24 18:17:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-09-24 18:17:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-09-24 18:17:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-09-24 18:17:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-09-24 18:17:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-09-24 18:17:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-09-24 18:17:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-09-24 18:17:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-09-24 18:17:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-09-24 18:17:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-24 18:17:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-09-24 18:17:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-09-24 18:17:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-09-24 18:17:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-09-24 18:17:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-09-24 18:17:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-09-24 18:17:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-09-24 18:17:13,976 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-09-24 18:17:13,976 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-09-24 18:17:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-09-24 18:17:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-09-24 18:17:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-09-24 18:17:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-09-24 18:17:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-09-24 18:17:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-09-24 18:17:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-09-24 18:17:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-09-24 18:17:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-09-24 18:17:13,980 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-09-24 18:17:13,980 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-09-24 18:17:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-09-24 18:17:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-09-24 18:17:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-09-24 18:17:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-09-24 18:17:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-09-24 18:17:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-09-24 18:17:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-09-24 18:17:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-09-24 18:17:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-09-24 18:17:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-09-24 18:17:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-09-24 18:17:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-09-24 18:17:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-09-24 18:17:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-09-24 18:17:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-09-24 18:17:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-09-24 18:17:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-09-24 18:17:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-09-24 18:17:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-09-24 18:17:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-09-24 18:17:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-09-24 18:17:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-09-24 18:17:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-09-24 18:17:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-09-24 18:17:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-09-24 18:17:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-09-24 18:17:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 18:17:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 18:17:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 18:17:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 18:17:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 18:17:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 18:17:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 18:17:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 18:17:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 18:17:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 18:17:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 18:17:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 18:17:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 18:17:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 18:17:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 18:17:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 18:17:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 18:17:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 18:17:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 18:17:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 18:17:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 18:17:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 18:17:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 18:17:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 18:17:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 18:17:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 18:17:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 18:17:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 18:17:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 18:17:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 18:17:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 18:17:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 18:17:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 18:17:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 18:17:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 18:17:14,006 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 18:17:14,008 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 18:17:14,008 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 18:17:14,008 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 18:17:14,008 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 18:17:14,008 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 18:17:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 18:17:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 18:17:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 18:17:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 18:17:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 18:17:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 18:17:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 18:17:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 18:17:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 18:17:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 18:17:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 18:17:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 18:17:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 18:17:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 18:17:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 18:17:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 18:17:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 18:17:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:17:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 18:17:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 18:17:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:17:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 18:17:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 18:17:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2020-09-24 18:17:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 18:17:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 18:17:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 18:17:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 18:17:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 18:17:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 18:17:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 18:17:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 18:17:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 18:17:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 18:17:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 18:17:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 18:17:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 18:17:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 18:17:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 18:17:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 18:17:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 18:17:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 18:17:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 18:17:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 18:17:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 18:17:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 18:17:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 18:17:14,017 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 18:17:14,017 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 18:17:14,017 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 18:17:14,017 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 18:17:14,017 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 18:17:14,017 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 18:17:14,018 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 18:17:14,018 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 18:17:14,018 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 18:17:14,018 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 18:17:14,018 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 18:17:14,018 INFO L130 BoogieDeclarations]: Found specification of procedure posix_openpt [2020-09-24 18:17:14,019 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 18:17:14,019 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-24 18:17:14,019 INFO L130 BoogieDeclarations]: Found specification of procedure l_malloc [2020-09-24 18:17:14,019 INFO L130 BoogieDeclarations]: Found specification of procedure l_free [2020-09-24 18:17:14,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:17:14,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 18:17:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:17:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:17:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:17:14,621 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:17:14,621 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 18:17:14,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:17:14 BoogieIcfgContainer [2020-09-24 18:17:14,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:17:14,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:17:14,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:17:14,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:17:14,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:17:12" (1/3) ... [2020-09-24 18:17:14,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d09e48b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:17:14, skipping insertion in model container [2020-09-24 18:17:14,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:17:13" (2/3) ... [2020-09-24 18:17:14,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d09e48b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:17:14, skipping insertion in model container [2020-09-24 18:17:14,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:17:14" (3/3) ... [2020-09-24 18:17:14,635 INFO L109 eAbstractionObserver]: Analyzing ICFG alt_test.i [2020-09-24 18:17:14,646 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:17:14,657 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:17:14,680 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:17:14,716 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:17:14,716 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:17:14,716 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:17:14,717 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:17:14,717 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:17:14,717 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:17:14,717 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:17:14,717 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:17:14,740 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-09-24 18:17:14,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 18:17:14,747 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:17:14,748 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, 1, 1, 1, 1, 1, 1] [2020-09-24 18:17:14,749 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:17:14,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:17:14,756 INFO L82 PathProgramCache]: Analyzing trace with hash -464537204, now seen corresponding path program 1 times [2020-09-24 18:17:14,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:17:14,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050954535] [2020-09-24 18:17:14,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:17:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:14,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:15,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:15,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:15,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 18:17:15,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:17:15,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 773 [2020-09-24 18:17:15,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:15,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:17:15,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 18:17:15,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 18:17:15,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:17:15,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:17:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:15,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:15,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:15,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:17:15,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:15,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:17:15,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:15,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:15,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:15,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:15,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:17:15,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:17:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:15,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:15,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:15,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:17:15,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:15,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 18:17:15,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:15,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:17:15,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:17:15,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 18:17:15,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:17:15,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:17:15,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050954535] [2020-09-24 18:17:15,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:17:15,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:17:15,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092501096] [2020-09-24 18:17:15,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:17:15,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:17:15,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:17:15,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:17:15,993 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 6 states. [2020-09-24 18:17:16,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:17:16,205 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-09-24 18:17:16,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:17:16,207 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-09-24 18:17:16,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:17:16,220 INFO L225 Difference]: With dead ends: 62 [2020-09-24 18:17:16,220 INFO L226 Difference]: Without dead ends: 33 [2020-09-24 18:17:16,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:17:16,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-24 18:17:16,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-24 18:17:16,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-24 18:17:16,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-24 18:17:16,281 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 26 [2020-09-24 18:17:16,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:17:16,281 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-24 18:17:16,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:17:16,282 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-24 18:17:16,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 18:17:16,283 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:17:16,283 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:17:16,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:17:16,283 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:17:16,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:17:16,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1961589014, now seen corresponding path program 1 times [2020-09-24 18:17:16,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:17:16,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487335491] [2020-09-24 18:17:16,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:17:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:16,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:16,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:16,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 18:17:16,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:16,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 18:17:16,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:16,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:17:16,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 18:17:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 18:17:16,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:17:16,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:17:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:16,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:16,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:16,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:17:16,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:16,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:17:16,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:16,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:16,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:16,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:16,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:17:16,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:17:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:16,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:16,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:16,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:17:16,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:16,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 18:17:16,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:16,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:17:16,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:16,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:17:16,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:17:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:17:16,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487335491] [2020-09-24 18:17:16,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:17:16,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:17:16,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226884916] [2020-09-24 18:17:16,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:17:16,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:17:16,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:17:16,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:17:16,534 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 5 states. [2020-09-24 18:17:16,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:17:16,691 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2020-09-24 18:17:16,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:17:16,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-24 18:17:16,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:17:16,694 INFO L225 Difference]: With dead ends: 40 [2020-09-24 18:17:16,694 INFO L226 Difference]: Without dead ends: 36 [2020-09-24 18:17:16,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:17:16,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-24 18:17:16,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-24 18:17:16,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 18:17:16,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-09-24 18:17:16,707 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 27 [2020-09-24 18:17:16,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:17:16,707 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-09-24 18:17:16,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:17:16,708 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-09-24 18:17:16,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 18:17:16,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:17:16,709 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:17:16,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:17:16,710 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:17:16,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:17:16,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1381039993, now seen corresponding path program 1 times [2020-09-24 18:17:16,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:17:16,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001083434] [2020-09-24 18:17:16,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:17:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:16,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:16,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:16,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:18,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:18,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 18:17:18,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:17:18,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1334 [2020-09-24 18:17:18,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:18,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:17:18,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 18:17:18,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:17:18,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:17:18,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:17:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:18,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:18,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:18,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:17:18,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:18,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:17:18,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:18,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:18,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:18,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:17:18,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:17:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:18,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:18,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:18,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:17:18,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:18,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:17:18,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:18,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:18,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:18,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:18,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:17:18,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:17:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:18,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:18,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:18,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:17:18,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:18,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 18:17:18,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:18,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:17:18,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:18,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:17:18,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:17:18,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:17:18,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001083434] [2020-09-24 18:17:18,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:17:18,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 18:17:18,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892182202] [2020-09-24 18:17:18,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:17:18,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:17:18,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:17:18,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:17:18,313 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 9 states. [2020-09-24 18:17:18,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:17:18,631 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-09-24 18:17:18,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:17:18,631 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-24 18:17:18,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:17:18,633 INFO L225 Difference]: With dead ends: 51 [2020-09-24 18:17:18,633 INFO L226 Difference]: Without dead ends: 36 [2020-09-24 18:17:18,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-24 18:17:18,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-24 18:17:18,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-24 18:17:18,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 18:17:18,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-09-24 18:17:18,640 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2020-09-24 18:17:18,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:17:18,641 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-09-24 18:17:18,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:17:18,641 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-09-24 18:17:18,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 18:17:18,642 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:17:18,642 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:17:18,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:17:18,643 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:17:18,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:17:18,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1342711683, now seen corresponding path program 1 times [2020-09-24 18:17:18,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:17:18,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460517345] [2020-09-24 18:17:18,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:17:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 18:17:18,662 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 18:17:18,663 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 18:17:18,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:17:18,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:17:18 BoogieIcfgContainer [2020-09-24 18:17:18,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:17:18,718 INFO L168 Benchmark]: Toolchain (without parser) took 5892.36 ms. Allocated memory was 136.3 MB in the beginning and 257.9 MB in the end (delta: 121.6 MB). Free memory was 97.6 MB in the beginning and 194.2 MB in the end (delta: -96.6 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-09-24 18:17:18,722 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 18:17:18,723 INFO L168 Benchmark]: CACSL2BoogieTranslator took 914.66 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 96.9 MB in the beginning and 149.9 MB in the end (delta: -53.0 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2020-09-24 18:17:18,724 INFO L168 Benchmark]: Boogie Preprocessor took 128.34 ms. Allocated memory is still 199.8 MB. Free memory was 149.9 MB in the beginning and 147.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-09-24 18:17:18,726 INFO L168 Benchmark]: RCFGBuilder took 755.14 ms. Allocated memory is still 199.8 MB. Free memory was 147.0 MB in the beginning and 87.5 MB in the end (delta: 59.5 MB). Peak memory consumption was 59.5 MB. Max. memory is 7.1 GB. [2020-09-24 18:17:18,728 INFO L168 Benchmark]: TraceAbstraction took 4084.40 ms. Allocated memory was 199.8 MB in the beginning and 257.9 MB in the end (delta: 58.2 MB). Free memory was 87.5 MB in the beginning and 194.2 MB in the end (delta: -106.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 18:17:18,733 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 136.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 914.66 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 96.9 MB in the beginning and 149.9 MB in the end (delta: -53.0 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.34 ms. Allocated memory is still 199.8 MB. Free memory was 149.9 MB in the beginning and 147.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 755.14 ms. Allocated memory is still 199.8 MB. Free memory was 147.0 MB in the beginning and 87.5 MB in the end (delta: 59.5 MB). Peak memory consumption was 59.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4084.40 ms. Allocated memory was 199.8 MB in the beginning and 257.9 MB in the end (delta: 58.2 MB). Free memory was 87.5 MB in the beginning and 194.2 MB in the end (delta: -106.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1601]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1606] int globalState = 0; [L1612] CALL, EXPR l_malloc(sizeof(int)) [L1619] void *retVal = malloc(size); [L1620] COND TRUE retVal != ((void *)0) [L1621] globalState=1 [L1622] return retVal; [L1612] RET, EXPR l_malloc(sizeof(int)) [L1612] int *a = (int*) l_malloc(sizeof(int)); [L1613] CALL l_free(a) [L1629] COND TRUE ptr!=((void *)0) [L1629] (globalState == 1) ? (0) : __blast_assert () [L1630] globalState = 0 [L1613] RET l_free(a) [L1614] CALL l_free(a) [L1629] COND TRUE ptr!=((void *)0) [L1629] (globalState == 1) ? (0) : __blast_assert () [L1629] CALL __blast_assert () [L1601] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.9s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 88 SDtfs, 90 SDslu, 172 SDs, 0 SdLazy, 207 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 6884 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...