/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-properties/list_search-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:17:45,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:17:45,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:17:45,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 22:17:45,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 22:17:45,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 22:17:45,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 22:17:45,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 22:17:45,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 22:17:45,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 22:17:45,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 22:17:45,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 22:17:45,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:17:45,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:17:45,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:17:45,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:17:45,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:17:45,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:17:45,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:17:45,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:17:45,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:17:45,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:17:45,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:17:45,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:17:45,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 22:17:45,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 22:17:45,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 22:17:45,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 22:17:45,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 22:17:45,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 22:17:45,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 22:17:45,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 22:17:45,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 22:17:45,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 22:17:45,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 22:17:45,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 22:17:45,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 22:17:45,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 22:17:45,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:17:45,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:17:45,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:17:45,452 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 22:17:45,484 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:17:45,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:17:45,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:17:45,486 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:17:45,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:17:45,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:17:45,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:17:45,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:17:45,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:17:45,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:17:45,492 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:17:45,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:17:45,493 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:17:45,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:17:45,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:17:45,493 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:17:45,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:17:45,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:17:45,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:17:45,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:17:45,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:17:45,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:17:45,495 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-08-22 22:17:45,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:17:45,867 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:17:45,873 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:17:45,874 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:17:45,875 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:17:45,875 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2020-08-22 22:17:45,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e2ce7f9d/cf980c9ad0e34c8c9781278ee1c1bee1/FLAG413eb5151 [2020-08-22 22:17:46,617 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:17:46,618 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_search-1.i [2020-08-22 22:17:46,637 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e2ce7f9d/cf980c9ad0e34c8c9781278ee1c1bee1/FLAG413eb5151 [2020-08-22 22:17:46,912 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e2ce7f9d/cf980c9ad0e34c8c9781278ee1c1bee1 [2020-08-22 22:17:46,922 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:17:46,924 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:17:46,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:17:46,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:17:46,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:17:46,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:17:46" (1/1) ... [2020-08-22 22:17:46,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d927774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:17:46, skipping insertion in model container [2020-08-22 22:17:46,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:17:46" (1/1) ... [2020-08-22 22:17:46,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:17:47,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:17:47,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:17:47,549 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:17:47,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:17:47,673 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:17:47,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:17:47 WrapperNode [2020-08-22 22:17:47,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:17:47,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:17:47,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:17:47,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:17:47,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:17:47" (1/1) ... [2020-08-22 22:17:47,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:17:47" (1/1) ... [2020-08-22 22:17:47,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:17:47" (1/1) ... [2020-08-22 22:17:47,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:17:47" (1/1) ... [2020-08-22 22:17:47,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:17:47" (1/1) ... [2020-08-22 22:17:47,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:17:47" (1/1) ... [2020-08-22 22:17:47,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:17:47" (1/1) ... [2020-08-22 22:17:47,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:17:47,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:17:47,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:17:47,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:17:47,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:17:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 22:17:47,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:17:47,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:17:47,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 22:17:47,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-22 22:17:47,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-22 22:17:47,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-08-22 22:17:47,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-08-22 22:17:47,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-08-22 22:17:47,833 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2020-08-22 22:17:47,833 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2020-08-22 22:17:47,833 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:17:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:17:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 22:17:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 22:17:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 22:17:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 22:17:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 22:17:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 22:17:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 22:17:47,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 22:17:47,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 22:17:47,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 22:17:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 22:17:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 22:17:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 22:17:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 22:17:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 22:17:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 22:17:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 22:17:47,841 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-22 22:17:47,841 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-22 22:17:47,841 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-08-22 22:17:47,842 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-08-22 22:17:47,842 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-08-22 22:17:47,842 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 22:17:47,842 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 22:17:47,842 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 22:17:47,842 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 22:17:47,842 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 22:17:47,846 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 22:17:47,846 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 22:17:47,846 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 22:17:47,846 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 22:17:47,847 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 22:17:47,847 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 22:17:47,847 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 22:17:47,847 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 22:17:47,847 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 22:17:47,847 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 22:17:47,847 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 22:17:47,848 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 22:17:47,848 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 22:17:47,848 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 22:17:47,848 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 22:17:47,848 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 22:17:47,848 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 22:17:47,849 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 22:17:47,849 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 22:17:47,849 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 22:17:47,849 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 22:17:47,849 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 22:17:47,849 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 22:17:47,849 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 22:17:47,850 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 22:17:47,850 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 22:17:47,850 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 22:17:47,850 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 22:17:47,850 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 22:17:47,850 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 22:17:47,850 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 22:17:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 22:17:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 22:17:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 22:17:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 22:17:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 22:17:47,852 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 22:17:47,852 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 22:17:47,852 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 22:17:47,852 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 22:17:47,852 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 22:17:47,852 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 22:17:47,853 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 22:17:47,853 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 22:17:47,853 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 22:17:47,853 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 22:17:47,853 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 22:17:47,853 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 22:17:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 22:17:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 22:17:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 22:17:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 22:17:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 22:17:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 22:17:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 22:17:47,855 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 22:17:47,855 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 22:17:47,855 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 22:17:47,855 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 22:17:47,855 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 22:17:47,855 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 22:17:47,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 22:17:47,856 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 22:17:47,856 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 22:17:47,856 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 22:17:47,856 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 22:17:47,856 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 22:17:47,856 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 22:17:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 22:17:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 22:17:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 22:17:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 22:17:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 22:17:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 22:17:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 22:17:47,858 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 22:17:47,858 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 22:17:47,858 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 22:17:47,858 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 22:17:47,858 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 22:17:47,858 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 22:17:47,859 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2020-08-22 22:17:47,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 22:17:47,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 22:17:47,859 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2020-08-22 22:17:47,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 22:17:47,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 22:17:47,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 22:17:47,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:17:47,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 22:17:47,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:17:47,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:17:48,491 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:17:48,492 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-22 22:17:48,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:17:48 BoogieIcfgContainer [2020-08-22 22:17:48,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:17:48,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:17:48,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:17:48,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:17:48,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:17:46" (1/3) ... [2020-08-22 22:17:48,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6ae7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:17:48, skipping insertion in model container [2020-08-22 22:17:48,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:17:47" (2/3) ... [2020-08-22 22:17:48,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6ae7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:17:48, skipping insertion in model container [2020-08-22 22:17:48,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:17:48" (3/3) ... [2020-08-22 22:17:48,510 INFO L109 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2020-08-22 22:17:48,522 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:17:48,532 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 22:17:48,546 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 22:17:48,565 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:17:48,566 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:17:48,566 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:17:48,566 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:17:48,566 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:17:48,566 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:17:48,567 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:17:48,567 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:17:48,584 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-08-22 22:17:48,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-22 22:17:48,600 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:17:48,601 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:17:48,602 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:17:48,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:17:48,610 INFO L82 PathProgramCache]: Analyzing trace with hash 42223880, now seen corresponding path program 1 times [2020-08-22 22:17:48,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:17:48,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673805376] [2020-08-22 22:17:48,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:17:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:48,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:17:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:49,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:17:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:49,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 22:17:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:49,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 22:17:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:49,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 22:17:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:49,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-22 22:17:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:49,240 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-08-22 22:17:49,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673805376] [2020-08-22 22:17:49,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:17:49,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 22:17:49,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091202910] [2020-08-22 22:17:49,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 22:17:49,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:17:49,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 22:17:49,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 22:17:49,272 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 9 states. [2020-08-22 22:17:50,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:17:50,082 INFO L93 Difference]: Finished difference Result 187 states and 225 transitions. [2020-08-22 22:17:50,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 22:17:50,085 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-08-22 22:17:50,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:17:50,103 INFO L225 Difference]: With dead ends: 187 [2020-08-22 22:17:50,103 INFO L226 Difference]: Without dead ends: 92 [2020-08-22 22:17:50,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-08-22 22:17:50,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-08-22 22:17:50,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 73. [2020-08-22 22:17:50,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-08-22 22:17:50,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-08-22 22:17:50,234 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 82 [2020-08-22 22:17:50,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:17:50,236 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-08-22 22:17:50,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 22:17:50,236 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-08-22 22:17:50,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 22:17:50,246 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:17:50,247 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:17:50,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:17:50,248 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:17:50,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:17:50,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1050718625, now seen corresponding path program 1 times [2020-08-22 22:17:50,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:17:50,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143022737] [2020-08-22 22:17:50,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:17:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:50,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:17:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:50,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 22:17:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:50,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 22:17:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:50,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 22:17:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:50,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 22:17:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:50,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 22:17:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:50,637 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-08-22 22:17:50,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143022737] [2020-08-22 22:17:50,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:17:50,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 22:17:50,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622282634] [2020-08-22 22:17:50,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 22:17:50,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:17:50,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 22:17:50,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:17:50,642 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 10 states. [2020-08-22 22:17:51,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:17:51,293 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2020-08-22 22:17:51,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 22:17:51,294 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-22 22:17:51,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:17:51,299 INFO L225 Difference]: With dead ends: 113 [2020-08-22 22:17:51,299 INFO L226 Difference]: Without dead ends: 90 [2020-08-22 22:17:51,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2020-08-22 22:17:51,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-08-22 22:17:51,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2020-08-22 22:17:51,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-22 22:17:51,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-08-22 22:17:51,320 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 89 [2020-08-22 22:17:51,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:17:51,321 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-08-22 22:17:51,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 22:17:51,321 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-08-22 22:17:51,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-22 22:17:51,323 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:17:51,323 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:17:51,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:17:51,324 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:17:51,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:17:51,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1346991358, now seen corresponding path program 1 times [2020-08-22 22:17:51,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:17:51,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721165229] [2020-08-22 22:17:51,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:17:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:51,425 ERROR L253 erpolLogProxyWrapper]: Interpolant 18 not inductive [2020-08-22 22:17:51,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 22:17:51,427 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:874) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-08-22 22:17:51,434 INFO L168 Benchmark]: Toolchain (without parser) took 4509.10 ms. Allocated memory was 137.4 MB in the beginning and 251.1 MB in the end (delta: 113.8 MB). Free memory was 99.6 MB in the beginning and 92.5 MB in the end (delta: 7.1 MB). Peak memory consumption was 120.8 MB. Max. memory is 7.1 GB. [2020-08-22 22:17:51,435 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 22:17:51,437 INFO L168 Benchmark]: CACSL2BoogieTranslator took 749.61 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 99.4 MB in the beginning and 167.0 MB in the end (delta: -67.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-08-22 22:17:51,438 INFO L168 Benchmark]: Boogie Preprocessor took 73.73 ms. Allocated memory is still 201.3 MB. Free memory was 167.0 MB in the beginning and 164.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-22 22:17:51,438 INFO L168 Benchmark]: RCFGBuilder took 747.51 ms. Allocated memory is still 201.3 MB. Free memory was 164.4 MB in the beginning and 116.0 MB in the end (delta: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2020-08-22 22:17:51,440 INFO L168 Benchmark]: TraceAbstraction took 2930.07 ms. Allocated memory was 201.3 MB in the beginning and 251.1 MB in the end (delta: 49.8 MB). Free memory was 116.0 MB in the beginning and 92.5 MB in the end (delta: 23.4 MB). Peak memory consumption was 73.3 MB. Max. memory is 7.1 GB. [2020-08-22 22:17:51,445 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 749.61 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 99.4 MB in the beginning and 167.0 MB in the end (delta: -67.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.73 ms. Allocated memory is still 201.3 MB. Free memory was 167.0 MB in the beginning and 164.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 747.51 ms. Allocated memory is still 201.3 MB. Free memory was 164.4 MB in the beginning and 116.0 MB in the end (delta: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2930.07 ms. Allocated memory was 201.3 MB in the beginning and 251.1 MB in the end (delta: 49.8 MB). Free memory was 116.0 MB in the beginning and 92.5 MB in the end (delta: 23.4 MB). Peak memory consumption was 73.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...