/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 --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=1000 --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/list-properties/splice-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:25:55,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:25:55,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:25:56,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:25:56,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:25:56,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:25:56,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:25:56,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:25:56,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:25:56,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:25:56,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:25:56,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:25:56,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:25:56,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:25:56,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:25:56,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:25:56,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:25:56,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:25:56,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:25:56,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:25:56,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:25:56,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:25:56,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:25:56,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:25:56,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:25:56,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:25:56,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:25:56,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:25:56,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:25:56,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:25:56,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:25:56,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:25:56,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:25:56,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:25:56,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:25:56,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:25:56,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:25:56,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:25:56,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:25:56,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:25:56,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:25:56,072 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 [2020-09-21 12:25:56,117 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:25:56,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:25:56,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:25:56,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:25:56,119 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:25:56,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:25:56,120 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:25:56,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:25:56,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:25:56,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:25:56,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:25:56,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:25:56,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:25:56,122 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:25:56,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:25:56,123 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:25:56,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:25:56,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:25:56,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:25:56,123 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:25:56,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:25:56,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:25:56,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:25:56,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:25:56,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:25:56,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:25:56,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:25:56,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:25:56,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:25:56,125 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.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=1000;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=1000;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=1000;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=1000;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:25:56,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:25:56,582 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:25:56,586 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:25:56,587 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:25:56,588 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:25:56,589 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/splice-1.i [2020-09-21 12:25:56,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a9c0a62a/bd94c06e3e2e41028d0ac930066ab6c9/FLAGe6b5a5cb4 [2020-09-21 12:25:57,272 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:25:57,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/splice-1.i [2020-09-21 12:25:57,289 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a9c0a62a/bd94c06e3e2e41028d0ac930066ab6c9/FLAGe6b5a5cb4 [2020-09-21 12:25:57,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a9c0a62a/bd94c06e3e2e41028d0ac930066ab6c9 [2020-09-21 12:25:57,582 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:25:57,588 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:25:57,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:25:57,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:25:57,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:25:57,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:25:57" (1/1) ... [2020-09-21 12:25:57,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27a8d275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:57, skipping insertion in model container [2020-09-21 12:25:57,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:25:57" (1/1) ... [2020-09-21 12:25:57,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:25:57,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:25:58,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:25:58,200 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:25:58,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:25:58,339 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:25:58,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:58 WrapperNode [2020-09-21 12:25:58,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:25:58,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:25:58,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:25:58,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:25:58,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:58" (1/1) ... [2020-09-21 12:25:58,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:58" (1/1) ... [2020-09-21 12:25:58,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:58" (1/1) ... [2020-09-21 12:25:58,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:58" (1/1) ... [2020-09-21 12:25:58,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:58" (1/1) ... [2020-09-21 12:25:58,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:58" (1/1) ... [2020-09-21 12:25:58,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:58" (1/1) ... [2020-09-21 12:25:58,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:25:58,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:25:58,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:25:58,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:25:58,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:58" (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 [2020-09-21 12:25:58,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:25:58,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:25:58,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-21 12:25:58,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-21 12:25:58,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-21 12:25:58,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-21 12:25:58,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-21 12:25:58,493 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-21 12:25:58,493 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:25:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:25:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:25:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-21 12:25:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-21 12:25:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-21 12:25:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-21 12:25:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-21 12:25:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-21 12:25:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-21 12:25:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-21 12:25:58,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-21 12:25:58,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-21 12:25:58,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-21 12:25:58,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-21 12:25:58,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-21 12:25:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-21 12:25:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-21 12:25:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-21 12:25:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-21 12:25:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-21 12:25:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-21 12:25:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-21 12:25:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-21 12:25:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-21 12:25:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-21 12:25:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-21 12:25:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-21 12:25:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-21 12:25:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-21 12:25:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-21 12:25:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-21 12:25:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-21 12:25:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-21 12:25:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-21 12:25:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-21 12:25:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-21 12:25:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-21 12:25:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-21 12:25:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-21 12:25:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-21 12:25:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-21 12:25:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-21 12:25:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-21 12:25:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-21 12:25:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-21 12:25:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-21 12:25:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-21 12:25:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-21 12:25:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-21 12:25:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-21 12:25:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-21 12:25:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-21 12:25:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-21 12:25:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-21 12:25:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-21 12:25:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-21 12:25:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-21 12:25:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:25:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 12:25:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-21 12:25:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:25:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-21 12:25:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-21 12:25:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-21 12:25:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-21 12:25:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:25:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-21 12:25:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-21 12:25:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-21 12:25:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 12:25:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-21 12:25:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-21 12:25:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-21 12:25:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-21 12:25:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-21 12:25:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-21 12:25:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-21 12:25:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-21 12:25:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-21 12:25:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-21 12:25:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-21 12:25:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-21 12:25:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-21 12:25:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-21 12:25:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-21 12:25:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-21 12:25:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-21 12:25:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-21 12:25:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-21 12:25:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-21 12:25:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-21 12:25:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-21 12:25:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-21 12:25:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-21 12:25:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-21 12:25:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-21 12:25:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-21 12:25:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-21 12:25:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-21 12:25:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-21 12:25:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-21 12:25:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-21 12:25:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-21 12:25:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-21 12:25:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-21 12:25:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-21 12:25:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-21 12:25:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-21 12:25:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-21 12:25:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-21 12:25:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:25:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:25:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:25:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:25:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:25:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:25:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:25:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:25:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:25:58,884 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-21 12:25:59,086 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:25:59,086 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-21 12:25:59,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:25:59 BoogieIcfgContainer [2020-09-21 12:25:59,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:25:59,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:25:59,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:25:59,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:25:59,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:25:57" (1/3) ... [2020-09-21 12:25:59,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168c275c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:25:59, skipping insertion in model container [2020-09-21 12:25:59,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:58" (2/3) ... [2020-09-21 12:25:59,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168c275c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:25:59, skipping insertion in model container [2020-09-21 12:25:59,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:25:59" (3/3) ... [2020-09-21 12:25:59,100 INFO L109 eAbstractionObserver]: Analyzing ICFG splice-1.i [2020-09-21 12:25:59,112 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:25:59,122 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:25:59,141 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:25:59,167 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:25:59,168 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:25:59,168 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:25:59,168 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:25:59,168 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:25:59,168 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:25:59,169 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:25:59,169 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:25:59,191 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-09-21 12:25:59,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-21 12:25:59,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:59,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:59,201 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:59,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:59,207 INFO L82 PathProgramCache]: Analyzing trace with hash 661731879, now seen corresponding path program 1 times [2020-09-21 12:25:59,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:59,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600542726] [2020-09-21 12:25:59,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:59,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:59,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:59,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:59,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:00,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:00,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 12:26:00,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:26:00,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 682 [2020-09-21 12:26:00,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:00,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:00,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:26:00,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:00,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:26:00,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:00,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:00,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:00,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:00,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:00,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:26:00,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:00,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:00,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:00,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:00,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:00,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:26:00,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600542726] [2020-09-21 12:26:00,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:26:00,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:26:00,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232771938] [2020-09-21 12:26:00,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:26:00,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:00,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:26:00,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:26:00,148 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-09-21 12:26:00,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:00,270 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2020-09-21 12:26:00,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:26:00,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-21 12:26:00,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:00,283 INFO L225 Difference]: With dead ends: 54 [2020-09-21 12:26:00,284 INFO L226 Difference]: Without dead ends: 27 [2020-09-21 12:26:00,288 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 [2020-09-21 12:26:00,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-21 12:26:00,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-09-21 12:26:00,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-21 12:26:00,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2020-09-21 12:26:00,337 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 16 [2020-09-21 12:26:00,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:00,338 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2020-09-21 12:26:00,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:26:00,338 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2020-09-21 12:26:00,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 12:26:00,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:00,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:26:00,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:26:00,340 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:00,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:00,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1973627133, now seen corresponding path program 1 times [2020-09-21 12:26:00,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:00,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748075654] [2020-09-21 12:26:00,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:00,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:00,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:00,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:00,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:00,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-21 12:26:00,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:26:00,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-09-21 12:26:00,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:00,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:26:00,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 12:26:00,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:26:00,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:00,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:00,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:00,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:00,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:00,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:00,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:26:00,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:00,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:00,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:26:00,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748075654] [2020-09-21 12:26:00,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:26:00,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:26:00,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435993606] [2020-09-21 12:26:00,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:26:00,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:00,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:26:00,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:26:00,767 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand 5 states. [2020-09-21 12:26:00,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:00,876 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2020-09-21 12:26:00,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:26:00,877 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-21 12:26:00,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:00,878 INFO L225 Difference]: With dead ends: 49 [2020-09-21 12:26:00,879 INFO L226 Difference]: Without dead ends: 36 [2020-09-21 12:26:00,880 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 [2020-09-21 12:26:00,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-21 12:26:00,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2020-09-21 12:26:00,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-21 12:26:00,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-09-21 12:26:00,887 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 18 [2020-09-21 12:26:00,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:00,888 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-09-21 12:26:00,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:26:00,888 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-09-21 12:26:00,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 12:26:00,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:00,889 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] [2020-09-21 12:26:00,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:26:00,890 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:00,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:00,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1925443576, now seen corresponding path program 1 times [2020-09-21 12:26:00,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:00,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700457673] [2020-09-21 12:26:00,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:00,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:01,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:01,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:01,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:26:01,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:26:01,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-21 12:26:01,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:01,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:26:01,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-21 12:26:01,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:26:01,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:01,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:01,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:01,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:01,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:01,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:01,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:26:01,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:01,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:01,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 12:26:01,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700457673] [2020-09-21 12:26:01,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:26:01,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:26:01,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020876707] [2020-09-21 12:26:01,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:26:01,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:01,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:26:01,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:26:01,241 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 5 states. [2020-09-21 12:26:01,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:01,349 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2020-09-21 12:26:01,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:26:01,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-09-21 12:26:01,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:01,351 INFO L225 Difference]: With dead ends: 46 [2020-09-21 12:26:01,351 INFO L226 Difference]: Without dead ends: 39 [2020-09-21 12:26:01,352 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 [2020-09-21 12:26:01,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-21 12:26:01,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2020-09-21 12:26:01,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-21 12:26:01,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2020-09-21 12:26:01,359 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 24 [2020-09-21 12:26:01,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:01,359 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2020-09-21 12:26:01,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:26:01,359 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2020-09-21 12:26:01,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 12:26:01,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:01,361 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:26:01,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:26:01,361 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:01,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:01,361 INFO L82 PathProgramCache]: Analyzing trace with hash 777953469, now seen corresponding path program 1 times [2020-09-21 12:26:01,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:01,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949416826] [2020-09-21 12:26:01,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:01,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:01,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:01,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:01,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:26:01,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:26:01,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-09-21 12:26:01,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:01,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:26:01,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-21 12:26:01,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:26:01,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:01,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:01,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:01,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:01,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:01,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:01,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:26:01,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:01,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:01,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:01,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:01,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:01,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 12:26:01,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949416826] [2020-09-21 12:26:01,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:26:01,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:26:01,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968638310] [2020-09-21 12:26:01,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:26:01,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:01,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:26:01,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:26:01,767 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand 5 states. [2020-09-21 12:26:01,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:01,869 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2020-09-21 12:26:01,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:26:01,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-09-21 12:26:01,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:01,873 INFO L225 Difference]: With dead ends: 53 [2020-09-21 12:26:01,873 INFO L226 Difference]: Without dead ends: 45 [2020-09-21 12:26:01,874 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 [2020-09-21 12:26:01,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-21 12:26:01,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-09-21 12:26:01,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-21 12:26:01,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2020-09-21 12:26:01,883 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 26 [2020-09-21 12:26:01,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:01,883 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-09-21 12:26:01,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:26:01,884 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2020-09-21 12:26:01,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 12:26:01,885 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:01,885 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:26:01,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:26:01,885 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:01,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:01,886 INFO L82 PathProgramCache]: Analyzing trace with hash -743556192, now seen corresponding path program 1 times [2020-09-21 12:26:01,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:01,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316144523] [2020-09-21 12:26:01,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:26:01,914 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:26:01,915 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:26:01,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:26:01,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:26:01 BoogieIcfgContainer [2020-09-21 12:26:01,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:26:01,948 INFO L168 Benchmark]: Toolchain (without parser) took 4362.22 ms. Allocated memory was 141.0 MB in the beginning and 242.2 MB in the end (delta: 101.2 MB). Free memory was 103.5 MB in the beginning and 107.9 MB in the end (delta: -4.4 MB). Peak memory consumption was 96.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:01,949 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.1 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-21 12:26:01,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 751.18 ms. Allocated memory was 141.0 MB in the beginning and 207.6 MB in the end (delta: 66.6 MB). Free memory was 102.7 MB in the beginning and 171.7 MB in the end (delta: -69.0 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:01,951 INFO L168 Benchmark]: Boogie Preprocessor took 70.46 ms. Allocated memory is still 207.6 MB. Free memory was 170.7 MB in the beginning and 167.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:01,952 INFO L168 Benchmark]: RCFGBuilder took 679.29 ms. Allocated memory is still 207.6 MB. Free memory was 167.9 MB in the beginning and 122.0 MB in the end (delta: 45.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:01,953 INFO L168 Benchmark]: TraceAbstraction took 2852.05 ms. Allocated memory was 207.6 MB in the beginning and 242.2 MB in the end (delta: 34.6 MB). Free memory was 121.1 MB in the beginning and 107.9 MB in the end (delta: 13.1 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:01,957 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.1 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 751.18 ms. Allocated memory was 141.0 MB in the beginning and 207.6 MB in the end (delta: 66.6 MB). Free memory was 102.7 MB in the beginning and 171.7 MB in the end (delta: -69.0 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.46 ms. Allocated memory is still 207.6 MB. Free memory was 170.7 MB in the beginning and 167.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 679.29 ms. Allocated memory is still 207.6 MB. Free memory was 167.9 MB in the beginning and 122.0 MB in the end (delta: 45.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2852.05 ms. Allocated memory was 207.6 MB in the beginning and 242.2 MB in the end (delta: 34.6 MB). Free memory was 121.1 MB in the beginning and 107.9 MB in the end (delta: 13.1 MB). Peak memory consumption was 47.7 MB. 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, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.7s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 125 SDtfs, 26 SDslu, 133 SDs, 0 SdLazy, 210 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 4778 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...