/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/splice-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:00:43,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:00:43,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:00:43,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:00:43,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:00:43,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:00:43,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:00:43,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:00:43,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:00:43,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:00:43,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:00:43,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:00:43,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:00:43,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:00:43,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:00:43,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:00:43,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:00:43,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:00:43,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:00:43,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:00:43,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:00:43,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:00:43,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:00:43,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:00:43,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:00:43,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:00:43,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:00:43,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:00:43,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:00:43,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:00:43,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:00:43,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:00:43,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:00:43,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:00:43,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:00:43,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:00:43,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:00:43,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:00:43,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:00:43,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:00:43,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:00:43,340 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 16:00:43,370 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:00:43,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:00:43,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:00:43,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:00:43,372 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:00:43,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:00:43,373 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:00:43,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:00:43,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:00:43,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:00:43,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:00:43,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:00:43,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:00:43,374 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:00:43,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:00:43,374 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:00:43,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:00:43,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:00:43,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:00:43,375 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:00:43,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:00:43,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:00:43,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:00:43,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:00:43,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:00:43,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:00:43,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:00:43,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:00:43,377 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:00:43,378 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:00:43,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:00:43,900 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:00:43,905 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:00:43,907 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:00:43,907 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:00:43,909 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/splice-1.i [2020-09-24 16:00:43,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9c836f74/7d9815c5e59a4c13844e4a380488fd2a/FLAG4b4d507ed [2020-09-24 16:00:44,641 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:00:44,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/splice-1.i [2020-09-24 16:00:44,666 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9c836f74/7d9815c5e59a4c13844e4a380488fd2a/FLAG4b4d507ed [2020-09-24 16:00:44,873 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9c836f74/7d9815c5e59a4c13844e4a380488fd2a [2020-09-24 16:00:44,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:00:44,894 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:00:44,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:00:44,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:00:44,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:00:44,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:00:44" (1/1) ... [2020-09-24 16:00:44,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@336ce4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:44, skipping insertion in model container [2020-09-24 16:00:44,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:00:44" (1/1) ... [2020-09-24 16:00:44,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:00:44,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:00:45,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:00:45,492 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:00:45,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:00:45,619 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:00:45,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:45 WrapperNode [2020-09-24 16:00:45,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:00:45,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:00:45,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:00:45,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:00:45,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:45" (1/1) ... [2020-09-24 16:00:45,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:45" (1/1) ... [2020-09-24 16:00:45,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:45" (1/1) ... [2020-09-24 16:00:45,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:45" (1/1) ... [2020-09-24 16:00:45,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:45" (1/1) ... [2020-09-24 16:00:45,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:45" (1/1) ... [2020-09-24 16:00:45,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:45" (1/1) ... [2020-09-24 16:00:45,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:00:45,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:00:45,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:00:45,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:00:45,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:45" (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 16:00:45,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:00:45,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:00:45,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 16:00:45,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 16:00:45,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-24 16:00:45,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-24 16:00:45,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-24 16:00:45,785 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-24 16:00:45,785 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:00:45,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:00:45,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:00:45,786 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 16:00:45,786 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 16:00:45,786 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 16:00:45,787 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 16:00:45,788 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 16:00:45,788 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 16:00:45,789 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 16:00:45,789 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 16:00:45,789 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 16:00:45,790 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 16:00:45,790 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 16:00:45,790 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 16:00:45,791 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 16:00:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 16:00:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 16:00:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 16:00:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 16:00:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 16:00:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-24 16:00:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-24 16:00:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-24 16:00:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 16:00:45,797 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 16:00:45,797 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 16:00:45,797 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 16:00:45,797 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 16:00:45,797 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 16:00:45,797 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 16:00:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 16:00:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 16:00:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 16:00:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 16:00:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 16:00:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 16:00:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 16:00:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 16:00:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 16:00:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 16:00:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 16:00:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 16:00:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 16:00:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 16:00:45,802 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 16:00:45,802 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 16:00:45,802 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 16:00:45,802 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 16:00:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 16:00:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 16:00:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 16:00:45,804 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 16:00:45,805 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 16:00:45,805 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 16:00:45,805 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 16:00:45,805 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 16:00:45,805 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 16:00:45,805 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:00:45,806 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 16:00:45,807 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 16:00:45,807 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:00:45,807 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 16:00:45,807 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 16:00:45,807 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 16:00:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 16:00:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:00:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 16:00:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 16:00:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 16:00:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 16:00:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 16:00:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 16:00:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 16:00:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 16:00:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 16:00:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 16:00:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 16:00:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 16:00:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 16:00:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 16:00:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 16:00:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 16:00:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 16:00:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 16:00:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 16:00:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 16:00:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 16:00:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 16:00:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 16:00:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 16:00:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 16:00:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 16:00:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 16:00:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 16:00:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 16:00:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 16:00:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 16:00:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 16:00:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 16:00:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 16:00:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 16:00:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 16:00:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 16:00:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 16:00:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 16:00:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 16:00:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 16:00:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 16:00:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 16:00:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-24 16:00:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:00:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:00:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:00:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:00:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:00:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:00:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:00:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:00:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:00:46,177 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-24 16:00:46,503 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:00:46,503 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 16:00:46,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:00:46 BoogieIcfgContainer [2020-09-24 16:00:46,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:00:46,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:00:46,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:00:46,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:00:46,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:00:44" (1/3) ... [2020-09-24 16:00:46,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c05e3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:00:46, skipping insertion in model container [2020-09-24 16:00:46,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:45" (2/3) ... [2020-09-24 16:00:46,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c05e3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:00:46, skipping insertion in model container [2020-09-24 16:00:46,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:00:46" (3/3) ... [2020-09-24 16:00:46,518 INFO L109 eAbstractionObserver]: Analyzing ICFG splice-1.i [2020-09-24 16:00:46,530 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:00:46,543 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:00:46,566 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:00:46,594 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:00:46,595 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:00:46,595 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:00:46,595 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:00:46,595 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:00:46,595 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:00:46,595 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:00:46,595 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:00:46,616 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-09-24 16:00:46,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 16:00:46,625 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:46,627 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, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:46,627 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:46,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:46,634 INFO L82 PathProgramCache]: Analyzing trace with hash 570656219, now seen corresponding path program 1 times [2020-09-24 16:00:46,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:46,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180510690] [2020-09-24 16:00:46,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:46,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:46,804 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:46,804 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:46,804 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:46,805 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:46,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 16:00:46,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:46,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 16:00:46,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:46,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:46,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 16:00:46,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:46,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:46,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:46,893 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:46,893 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:46,893 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:46,894 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:46,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:00:46,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:46,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:46,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:46,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:46,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:46,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:46,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:46,913 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 16:00:46,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180510690] [2020-09-24 16:00:46,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:46,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:46,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604581059] [2020-09-24 16:00:46,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:46,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:46,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:46,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:46,949 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 3 states. [2020-09-24 16:00:47,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:47,188 INFO L93 Difference]: Finished difference Result 138 states and 161 transitions. [2020-09-24 16:00:47,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:47,190 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-09-24 16:00:47,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:47,202 INFO L225 Difference]: With dead ends: 138 [2020-09-24 16:00:47,202 INFO L226 Difference]: Without dead ends: 76 [2020-09-24 16:00:47,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:47,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-24 16:00:47,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-09-24 16:00:47,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-24 16:00:47,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2020-09-24 16:00:47,261 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 33 [2020-09-24 16:00:47,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:47,262 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2020-09-24 16:00:47,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:47,262 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2020-09-24 16:00:47,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 16:00:47,264 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:47,264 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:47,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:00:47,265 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:47,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:47,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1726039966, now seen corresponding path program 1 times [2020-09-24 16:00:47,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:47,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842684251] [2020-09-24 16:00:47,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:47,323 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:47,324 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:47,324 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:47,324 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:47,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 16:00:47,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:47,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 16:00:47,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:47,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:00:47,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 16:00:47,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:00:47,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:47,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:47,429 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:47,430 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:47,430 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:47,430 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:47,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:00:47,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:47,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:47,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:47,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:47,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:47,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:47,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:47,441 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 16:00:47,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842684251] [2020-09-24 16:00:47,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:47,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:00:47,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956642949] [2020-09-24 16:00:47,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:00:47,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:47,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:00:47,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:00:47,446 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 6 states. [2020-09-24 16:00:47,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:47,676 INFO L93 Difference]: Finished difference Result 142 states and 155 transitions. [2020-09-24 16:00:47,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:00:47,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-09-24 16:00:47,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:47,679 INFO L225 Difference]: With dead ends: 142 [2020-09-24 16:00:47,680 INFO L226 Difference]: Without dead ends: 98 [2020-09-24 16:00:47,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:00:47,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-24 16:00:47,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 78. [2020-09-24 16:00:47,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 16:00:47,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2020-09-24 16:00:47,693 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 37 [2020-09-24 16:00:47,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:47,693 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2020-09-24 16:00:47,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:00:47,694 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2020-09-24 16:00:47,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-24 16:00:47,696 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:47,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:47,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:00:47,696 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:47,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:47,697 INFO L82 PathProgramCache]: Analyzing trace with hash 294194033, now seen corresponding path program 1 times [2020-09-24 16:00:47,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:47,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533468927] [2020-09-24 16:00:47,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:47,754 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:47,754 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:47,755 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:47,755 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:47,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 16:00:47,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:47,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 16:00:47,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:47,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:00:47,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 16:00:47,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 16:00:47,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:47,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:47,929 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:47,930 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:47,930 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:47,930 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:47,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:00:47,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:47,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:47,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:47,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:47,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:47,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:47,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:47,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 16:00:47,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533468927] [2020-09-24 16:00:47,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:47,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:00:47,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081357881] [2020-09-24 16:00:47,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:00:47,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:47,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:00:47,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:00:47,943 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand 5 states. [2020-09-24 16:00:48,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:48,145 INFO L93 Difference]: Finished difference Result 124 states and 135 transitions. [2020-09-24 16:00:48,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:00:48,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-09-24 16:00:48,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:48,148 INFO L225 Difference]: With dead ends: 124 [2020-09-24 16:00:48,149 INFO L226 Difference]: Without dead ends: 105 [2020-09-24 16:00:48,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:00:48,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-24 16:00:48,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 92. [2020-09-24 16:00:48,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-24 16:00:48,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2020-09-24 16:00:48,177 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 50 [2020-09-24 16:00:48,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:48,181 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2020-09-24 16:00:48,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:00:48,182 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2020-09-24 16:00:48,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 16:00:48,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:48,185 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:48,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:00:48,186 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:48,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:48,186 INFO L82 PathProgramCache]: Analyzing trace with hash -2102515392, now seen corresponding path program 1 times [2020-09-24 16:00:48,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:48,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410093731] [2020-09-24 16:00:48,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:48,264 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:48,265 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:48,265 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:48,265 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:48,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 16:00:48,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:48,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 16:00:48,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:48,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:00:48,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 16:00:48,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 16:00:48,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:48,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:48,402 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:48,402 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:48,402 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:48,403 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:48,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:00:48,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:48,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:48,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:48,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:48,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:48,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:48,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 22 [2020-09-24 16:00:48,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 16:00:48,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410093731] [2020-09-24 16:00:48,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:48,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:00:48,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100940737] [2020-09-24 16:00:48,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:00:48,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:48,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:00:48,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:00:48,445 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand 5 states. [2020-09-24 16:00:48,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:48,628 INFO L93 Difference]: Finished difference Result 142 states and 155 transitions. [2020-09-24 16:00:48,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:00:48,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-09-24 16:00:48,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:48,630 INFO L225 Difference]: With dead ends: 142 [2020-09-24 16:00:48,630 INFO L226 Difference]: Without dead ends: 127 [2020-09-24 16:00:48,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:00:48,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-09-24 16:00:48,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 120. [2020-09-24 16:00:48,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-24 16:00:48,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2020-09-24 16:00:48,642 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 52 [2020-09-24 16:00:48,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:48,643 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2020-09-24 16:00:48,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:00:48,643 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2020-09-24 16:00:48,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 16:00:48,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:48,646 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, 1, 1, 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 16:00:48,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:00:48,646 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:48,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:48,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1840938300, now seen corresponding path program 1 times [2020-09-24 16:00:48,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:48,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133008015] [2020-09-24 16:00:48,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:00:48,698 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:00:48,698 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:00:48,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:00:48,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:00:48 BoogieIcfgContainer [2020-09-24 16:00:48,726 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:00:48,730 INFO L168 Benchmark]: Toolchain (without parser) took 3838.80 ms. Allocated memory was 145.2 MB in the beginning and 251.1 MB in the end (delta: 105.9 MB). Free memory was 99.7 MB in the beginning and 181.5 MB in the end (delta: -81.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:48,730 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 145.2 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:00:48,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 725.36 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 99.0 MB in the beginning and 168.3 MB in the end (delta: -69.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:48,734 INFO L168 Benchmark]: Boogie Preprocessor took 76.81 ms. Allocated memory is still 201.9 MB. Free memory was 168.3 MB in the beginning and 165.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:48,737 INFO L168 Benchmark]: RCFGBuilder took 810.63 ms. Allocated memory is still 201.9 MB. Free memory was 165.2 MB in the beginning and 113.9 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:48,738 INFO L168 Benchmark]: TraceAbstraction took 2216.13 ms. Allocated memory was 201.9 MB in the beginning and 251.1 MB in the end (delta: 49.3 MB). Free memory was 113.2 MB in the beginning and 181.5 MB in the end (delta: -68.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:00:48,742 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 145.2 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 725.36 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 99.0 MB in the beginning and 168.3 MB in the end (delta: -69.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 76.81 ms. Allocated memory is still 201.9 MB. Free memory was 168.3 MB in the beginning and 165.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 810.63 ms. Allocated memory is still 201.9 MB. Free memory was 165.2 MB in the beginning and 113.9 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2216.13 ms. Allocated memory was 201.9 MB in the beginning and 251.1 MB in the end (delta: 49.3 MB). Free memory was 113.2 MB in the beginning and 181.5 MB in the end (delta: -68.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 573]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int flag = 1; [L522] List a = (List) malloc(sizeof(struct node)); [L523] COND FALSE !(a == 0) [L524] List t; [L525] List l1; [L526] List l2; [L527] List b; [L528] List u; [L529] List p = a; [L530] COND TRUE __VERIFIER_nondet_int() [L531] COND TRUE \read(flag) [L532] p->h = 1 [L533] flag = 0 [L538] t = (List) malloc(sizeof(struct node)) [L539] COND FALSE !(t == 0) [L540] p->n = t [L541] EXPR p->n [L541] p = p->n [L530] COND FALSE !(__VERIFIER_nondet_int()) [L543] p->h = 3 [L544] EXPR a->h [L544] COND FALSE !(a->h == 3) [L545] flag = 1 [L546] l1 = 0 [L547] l2 = 0 [L548] p = a [L549] EXPR p->h [L549] COND TRUE p->h != 3 [L550] t = p [L551] EXPR p->n [L551] p = p->n [L552] COND TRUE \read(flag) [L553] t->n = l1 [L554] l1 = t [L555] flag = 0 [L549] EXPR p->h [L549] COND FALSE !(p->h != 3) [L562] p = l1 [L563] COND TRUE p != 0 [L564] EXPR p->h [L564] COND TRUE p->h != 2 [L573] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 111 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 324 SDtfs, 77 SDslu, 459 SDs, 0 SdLazy, 450 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=4, 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, 4 MinimizatonAttempts, 40 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 233 NumberOfCodeBlocks, 233 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 19198 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 4/4 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...