/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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-ext-properties/simple-ext.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:32:33,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:32:33,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:32:33,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:32:33,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:32:33,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:32:33,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:32:33,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:32:33,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:32:33,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:32:33,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:32:33,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:32:33,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:32:33,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:32:33,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:32:33,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:32:33,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:32:33,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:32:33,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:32:33,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:32:33,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:32:33,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:32:33,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:32:33,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:32:33,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:32:33,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:32:33,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:32:33,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:32:33,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:32:33,407 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:32:33,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:32:33,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:32:33,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:32:33,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:32:33,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:32:33,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:32:33,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:32:33,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:32:33,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:32:33,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:32:33,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:32:33,415 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 [2020-09-25 05:32:33,442 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:32:33,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:32:33,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:32:33,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:32:33,444 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:32:33,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:32:33,445 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:32:33,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:32:33,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:32:33,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:32:33,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:32:33,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:32:33,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:32:33,446 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:32:33,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:32:33,447 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:32:33,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:32:33,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:32:33,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:32:33,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:32:33,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:32:33,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:32:33,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:32:33,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:32:33,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:32:33,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:32:33,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:32:33,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:32:33,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:32:33,450 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:32:33,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:32:33,935 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:32:33,940 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:32:33,946 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:32:33,947 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:32:33,948 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/simple-ext.i [2020-09-25 05:32:34,047 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e5529eb9/f4ac654d5ed24f6985feca0482b6057a/FLAGc1c3810c7 [2020-09-25 05:32:34,752 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:32:34,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext-properties/simple-ext.i [2020-09-25 05:32:34,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e5529eb9/f4ac654d5ed24f6985feca0482b6057a/FLAGc1c3810c7 [2020-09-25 05:32:34,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e5529eb9/f4ac654d5ed24f6985feca0482b6057a [2020-09-25 05:32:34,996 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:32:35,001 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:32:35,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:32:35,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:32:35,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:32:35,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:32:34" (1/1) ... [2020-09-25 05:32:35,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@661e677f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:35, skipping insertion in model container [2020-09-25 05:32:35,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:32:34" (1/1) ... [2020-09-25 05:32:35,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:32:35,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:32:35,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:32:35,599 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:32:35,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:32:35,741 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:32:35,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:35 WrapperNode [2020-09-25 05:32:35,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:32:35,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:32:35,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:32:35,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:32:35,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:35" (1/1) ... [2020-09-25 05:32:35,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:35" (1/1) ... [2020-09-25 05:32:35,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:35" (1/1) ... [2020-09-25 05:32:35,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:35" (1/1) ... [2020-09-25 05:32:35,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:35" (1/1) ... [2020-09-25 05:32:35,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:35" (1/1) ... [2020-09-25 05:32:35,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:35" (1/1) ... [2020-09-25 05:32:35,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:32:35,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:32:35,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:32:35,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:32:35,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:35" (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 [2020-09-25 05:32:35,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:32:35,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:32:35,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 05:32:35,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 05:32:35,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-25 05:32:35,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-25 05:32:35,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-25 05:32:35,898 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 05:32:35,898 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:32:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:32:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:32:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 05:32:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 05:32:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 05:32:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 05:32:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 05:32:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 05:32:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 05:32:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 05:32:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 05:32:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 05:32:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 05:32:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 05:32:35,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 05:32:35,904 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 05:32:35,904 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 05:32:35,905 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 05:32:35,905 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 05:32:35,905 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 05:32:35,905 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-25 05:32:35,905 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-25 05:32:35,905 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-25 05:32:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 05:32:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 05:32:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 05:32:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 05:32:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 05:32:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 05:32:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 05:32:35,907 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 05:32:35,907 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 05:32:35,907 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 05:32:35,907 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 05:32:35,907 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 05:32:35,907 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 05:32:35,908 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 05:32:35,908 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 05:32:35,908 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 05:32:35,908 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 05:32:35,908 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 05:32:35,909 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 05:32:35,909 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 05:32:35,909 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 05:32:35,909 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 05:32:35,909 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 05:32:35,909 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 05:32:35,910 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 05:32:35,910 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 05:32:35,910 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 05:32:35,910 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 05:32:35,910 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 05:32:35,910 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 05:32:35,910 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 05:32:35,910 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 05:32:35,910 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 05:32:35,911 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 05:32:35,911 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 05:32:35,911 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 05:32:35,911 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 05:32:35,911 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 05:32:35,911 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 05:32:35,911 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 05:32:35,912 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 05:32:35,912 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 05:32:35,912 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 05:32:35,912 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 05:32:35,912 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 05:32:35,912 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 05:32:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:32:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 05:32:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 05:32:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 05:32:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 05:32:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 05:32:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 05:32:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 05:32:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 05:32:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 05:32:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 05:32:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 05:32:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 05:32:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 05:32:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 05:32:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 05:32:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 05:32:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 05:32:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 05:32:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 05:32:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 05:32:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 05:32:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 05:32:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 05:32:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 05:32:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 05:32:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 05:32:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 05:32:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 05:32:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 05:32:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 05:32:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 05:32:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 05:32:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 05:32:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 05:32:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 05:32:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 05:32:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 05:32:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 05:32:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 05:32:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 05:32:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:32:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 05:32:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 05:32:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 05:32:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 05:32:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 05:32:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 05:32:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:32:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:32:36,300 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 05:32:36,569 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:32:36,569 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 05:32:36,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:32:36 BoogieIcfgContainer [2020-09-25 05:32:36,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:32:36,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:32:36,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:32:36,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:32:36,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:32:34" (1/3) ... [2020-09-25 05:32:36,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2b912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:32:36, skipping insertion in model container [2020-09-25 05:32:36,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:35" (2/3) ... [2020-09-25 05:32:36,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2b912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:32:36, skipping insertion in model container [2020-09-25 05:32:36,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:32:36" (3/3) ... [2020-09-25 05:32:36,591 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-ext.i [2020-09-25 05:32:36,600 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:32:36,612 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:32:36,635 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:32:36,662 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:32:36,662 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:32:36,662 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:32:36,662 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:32:36,662 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:32:36,662 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:32:36,663 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:32:36,663 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:32:36,684 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-09-25 05:32:36,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 05:32:36,694 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:36,695 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] [2020-09-25 05:32:36,696 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:36,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:36,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1527556188, now seen corresponding path program 1 times [2020-09-25 05:32:36,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:36,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742338547] [2020-09-25 05:32:36,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:36,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:37,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:37,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 05:32:37,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:37,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 05:32:37,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:37,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:37,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:37,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:32:37,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:37,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:32:37,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:37,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:37,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:37,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:37,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:37,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:32:37,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:37,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:37,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:37,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:37,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:37,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:37,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:32:37,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742338547] [2020-09-25 05:32:37,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:37,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:32:37,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299476253] [2020-09-25 05:32:37,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:32:37,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:37,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:32:37,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:32:37,222 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 3 states. [2020-09-25 05:32:37,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:37,403 INFO L93 Difference]: Finished difference Result 95 states and 108 transitions. [2020-09-25 05:32:37,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:32:37,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-25 05:32:37,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:37,417 INFO L225 Difference]: With dead ends: 95 [2020-09-25 05:32:37,417 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 05:32:37,422 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 [2020-09-25 05:32:37,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 05:32:37,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 05:32:37,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 05:32:37,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-09-25 05:32:37,484 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 23 [2020-09-25 05:32:37,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:37,485 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-09-25 05:32:37,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:32:37,485 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-09-25 05:32:37,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 05:32:37,487 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:37,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:37,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:32:37,488 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:37,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:37,488 INFO L82 PathProgramCache]: Analyzing trace with hash 2054563523, now seen corresponding path program 1 times [2020-09-25 05:32:37,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:37,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447209617] [2020-09-25 05:32:37,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:37,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:37,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:37,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:37,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:32:37,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:32:37,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-09-25 05:32:37,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:37,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:37,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:32:37,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:32:37,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:32:37,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:32:37,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:37,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:37,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:37,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:37,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:37,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 05:32:37,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:37,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:37,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:37,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:32:37,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447209617] [2020-09-25 05:32:37,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:37,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:32:37,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813180293] [2020-09-25 05:32:37,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:32:37,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:37,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:32:37,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:32:37,964 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 5 states. [2020-09-25 05:32:38,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:38,107 INFO L93 Difference]: Finished difference Result 122 states and 128 transitions. [2020-09-25 05:32:38,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:32:38,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-25 05:32:38,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:38,110 INFO L225 Difference]: With dead ends: 122 [2020-09-25 05:32:38,110 INFO L226 Difference]: Without dead ends: 85 [2020-09-25 05:32:38,111 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 [2020-09-25 05:32:38,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-25 05:32:38,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 52. [2020-09-25 05:32:38,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 05:32:38,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-09-25 05:32:38,123 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 27 [2020-09-25 05:32:38,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:38,124 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-09-25 05:32:38,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:32:38,124 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-09-25 05:32:38,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 05:32:38,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:38,128 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] [2020-09-25 05:32:38,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:32:38,130 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:38,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:38,130 INFO L82 PathProgramCache]: Analyzing trace with hash -2100491616, now seen corresponding path program 1 times [2020-09-25 05:32:38,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:38,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035819492] [2020-09-25 05:32:38,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 05:32:38,175 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 05:32:38,175 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 05:32:38,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:32:38,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:32:38 BoogieIcfgContainer [2020-09-25 05:32:38,212 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:32:38,217 INFO L168 Benchmark]: Toolchain (without parser) took 3215.65 ms. Allocated memory was 139.5 MB in the beginning and 235.9 MB in the end (delta: 96.5 MB). Free memory was 101.3 MB in the beginning and 136.9 MB in the end (delta: -35.6 MB). Peak memory consumption was 60.9 MB. Max. memory is 7.1 GB. [2020-09-25 05:32:38,219 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 05:32:38,220 INFO L168 Benchmark]: CACSL2BoogieTranslator took 739.47 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 166.5 MB in the end (delta: -65.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-09-25 05:32:38,221 INFO L168 Benchmark]: Boogie Preprocessor took 71.23 ms. Allocated memory is still 202.9 MB. Free memory was 166.5 MB in the beginning and 163.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-25 05:32:38,222 INFO L168 Benchmark]: RCFGBuilder took 761.49 ms. Allocated memory is still 202.9 MB. Free memory was 163.8 MB in the beginning and 116.1 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. [2020-09-25 05:32:38,225 INFO L168 Benchmark]: TraceAbstraction took 1629.78 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 115.4 MB in the beginning and 136.9 MB in the end (delta: -21.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-09-25 05:32:38,239 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 739.47 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 166.5 MB in the end (delta: -65.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.23 ms. Allocated memory is still 202.9 MB. Free memory was 166.5 MB in the beginning and 163.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 761.49 ms. Allocated memory is still 202.9 MB. Free memory was 163.8 MB in the beginning and 116.1 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1629.78 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 115.4 MB in the beginning and 136.9 MB in the end (delta: -21.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 540]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] List a = (List) malloc(sizeof(struct node)); [L522] COND FALSE !(a == 0) [L523] List t; [L524] List p = a; [L525] int i = 0; [L526] i < 30 && __VERIFIER_nondet_int() [L526] i < 30 && __VERIFIER_nondet_int() [L526] COND FALSE !(i < 30 && __VERIFIER_nondet_int()) [L534] p->h = i [L535] p->n = 0 [L536] p = a [L537] i = 0 [L538] COND TRUE p!=0 [L539] EXPR p->h [L539] COND TRUE p->h != 1 [L540] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 115 SDtfs, 38 SDslu, 88 SDs, 0 SdLazy, 134 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 33 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1644 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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...