/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 0.1.25-3af5e1f [2020-09-04 22:04:52,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 22:04:52,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 22:04:52,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 22:04:52,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 22:04:52,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 22:04:52,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 22:04:52,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 22:04:52,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 22:04:52,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 22:04:52,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 22:04:52,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 22:04:52,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 22:04:52,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 22:04:52,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 22:04:52,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 22:04:52,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 22:04:52,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 22:04:52,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 22:04:52,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 22:04:52,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 22:04:52,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 22:04:52,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 22:04:52,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 22:04:52,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 22:04:52,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 22:04:52,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 22:04:52,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 22:04:52,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 22:04:52,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 22:04:52,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 22:04:52,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 22:04:52,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 22:04:52,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 22:04:52,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 22:04:52,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 22:04:52,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 22:04:52,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 22:04:52,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 22:04:52,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 22:04:52,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 22:04:52,276 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 22:04:52,296 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 22:04:52,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 22:04:52,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 22:04:52,299 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 22:04:52,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 22:04:52,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 22:04:52,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 22:04:52,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 22:04:52,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 22:04:52,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 22:04:52,301 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 22:04:52,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 22:04:52,302 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 22:04:52,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 22:04:52,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 22:04:52,303 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 22:04:52,303 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 22:04:52,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 22:04:52,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 22:04:52,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 22:04:52,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 22:04:52,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 22:04:52,304 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 [2020-09-04 22:04:52,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 22:04:52,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 22:04:52,754 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 22:04:52,756 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 22:04:52,756 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 22:04:52,757 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-04 22:04:52,850 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc4bc474b/827d3a4847284e3e940f1287f8ff57c3/FLAG42099482a [2020-09-04 22:04:53,488 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 22:04:53,489 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-04 22:04:53,508 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc4bc474b/827d3a4847284e3e940f1287f8ff57c3/FLAG42099482a [2020-09-04 22:04:53,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc4bc474b/827d3a4847284e3e940f1287f8ff57c3 [2020-09-04 22:04:53,740 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 22:04:53,742 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 22:04:53,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 22:04:53,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 22:04:53,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 22:04:53,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:04:53" (1/1) ... [2020-09-04 22:04:53,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3178309e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:04:53, skipping insertion in model container [2020-09-04 22:04:53,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:04:53" (1/1) ... [2020-09-04 22:04:53,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 22:04:53,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 22:04:54,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:04:54,296 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 22:04:54,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:04:54,433 INFO L208 MainTranslator]: Completed translation [2020-09-04 22:04:54,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:04:54 WrapperNode [2020-09-04 22:04:54,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 22:04:54,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 22:04:54,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 22:04:54,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 22:04:54,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:04:54" (1/1) ... [2020-09-04 22:04:54,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:04:54" (1/1) ... [2020-09-04 22:04:54,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:04:54" (1/1) ... [2020-09-04 22:04:54,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:04:54" (1/1) ... [2020-09-04 22:04:54,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:04:54" (1/1) ... [2020-09-04 22:04:54,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:04:54" (1/1) ... [2020-09-04 22:04:54,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:04:54" (1/1) ... [2020-09-04 22:04:54,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 22:04:54,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 22:04:54,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 22:04:54,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 22:04:54,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:04:54" (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 [2020-09-04 22:04:54,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 22:04:54,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 22:04:54,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 22:04:54,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-04 22:04:54,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-04 22:04:54,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-04 22:04:54,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-04 22:04:54,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-04 22:04:54,588 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2020-09-04 22:04:54,588 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2020-09-04 22:04:54,588 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 22:04:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 22:04:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 22:04:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-04 22:04:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-04 22:04:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-04 22:04:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-04 22:04:54,590 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-04 22:04:54,590 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-04 22:04:54,590 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-04 22:04:54,590 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-04 22:04:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-04 22:04:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-04 22:04:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-04 22:04:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-04 22:04:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-04 22:04:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-04 22:04:54,592 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-04 22:04:54,592 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-04 22:04:54,592 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-04 22:04:54,592 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-04 22:04:54,592 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-04 22:04:54,593 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-04 22:04:54,593 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-04 22:04:54,593 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-04 22:04:54,593 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-04 22:04:54,593 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-04 22:04:54,593 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-04 22:04:54,593 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-04 22:04:54,594 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-04 22:04:54,594 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-04 22:04:54,594 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-04 22:04:54,594 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-04 22:04:54,594 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-04 22:04:54,594 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-04 22:04:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-04 22:04:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-04 22:04:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-04 22:04:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-04 22:04:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-04 22:04:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-04 22:04:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-04 22:04:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-04 22:04:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-04 22:04:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-04 22:04:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-04 22:04:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-04 22:04:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-04 22:04:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-04 22:04:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-04 22:04:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-04 22:04:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-04 22:04:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-04 22:04:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-04 22:04:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-04 22:04:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-04 22:04:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-04 22:04:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-04 22:04:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 22:04:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-04 22:04:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-04 22:04:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 22:04:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-04 22:04:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-04 22:04:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-04 22:04:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-04 22:04:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 22:04:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-04 22:04:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-04 22:04:54,602 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-04 22:04:54,602 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-04 22:04:54,603 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-04 22:04:54,603 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-04 22:04:54,603 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-04 22:04:54,603 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-04 22:04:54,603 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-04 22:04:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-04 22:04:54,605 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-04 22:04:54,605 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-04 22:04:54,605 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-04 22:04:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-04 22:04:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-04 22:04:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-04 22:04:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-04 22:04:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-04 22:04:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-04 22:04:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-04 22:04:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-04 22:04:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-04 22:04:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-04 22:04:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-04 22:04:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-04 22:04:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-04 22:04:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-04 22:04:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-04 22:04:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-04 22:04:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-04 22:04:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-04 22:04:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-04 22:04:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-04 22:04:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-04 22:04:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-04 22:04:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-04 22:04:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-04 22:04:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-04 22:04:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-04 22:04:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-04 22:04:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-04 22:04:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-04 22:04:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-04 22:04:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2020-09-04 22:04:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 22:04:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 22:04:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2020-09-04 22:04:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 22:04:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 22:04:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 22:04:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 22:04:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 22:04:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 22:04:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 22:04:55,179 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 22:04:55,180 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-04 22:04:55,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:04:55 BoogieIcfgContainer [2020-09-04 22:04:55,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 22:04:55,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 22:04:55,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 22:04:55,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 22:04:55,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 10:04:53" (1/3) ... [2020-09-04 22:04:55,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ca6268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:04:55, skipping insertion in model container [2020-09-04 22:04:55,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:04:54" (2/3) ... [2020-09-04 22:04:55,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ca6268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:04:55, skipping insertion in model container [2020-09-04 22:04:55,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:04:55" (3/3) ... [2020-09-04 22:04:55,194 INFO L109 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2020-09-04 22:04:55,206 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 22:04:55,217 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 22:04:55,239 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 22:04:55,264 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 22:04:55,264 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 22:04:55,264 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 22:04:55,264 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 22:04:55,264 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 22:04:55,265 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 22:04:55,265 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 22:04:55,265 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 22:04:55,281 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-09-04 22:04:55,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-04 22:04:55,297 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:04:55,298 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] [2020-09-04 22:04:55,299 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:04:55,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:04:55,306 INFO L82 PathProgramCache]: Analyzing trace with hash 42223880, now seen corresponding path program 1 times [2020-09-04 22:04:55,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:04:55,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318474366] [2020-09-04 22:04:55,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:04:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:55,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:04:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:55,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 22:04:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:55,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 22:04:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:55,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-04 22:04:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:55,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-04 22:04:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:55,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-04 22:04:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:55,945 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-04 22:04:55,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318474366] [2020-09-04 22:04:55,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:04:55,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-04 22:04:55,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529565191] [2020-09-04 22:04:55,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 22:04:55,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:04:55,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 22:04:55,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-04 22:04:55,980 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 9 states. [2020-09-04 22:04:56,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:04:56,687 INFO L93 Difference]: Finished difference Result 187 states and 225 transitions. [2020-09-04 22:04:56,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-04 22:04:56,689 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-09-04 22:04:56,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:04:56,705 INFO L225 Difference]: With dead ends: 187 [2020-09-04 22:04:56,706 INFO L226 Difference]: Without dead ends: 92 [2020-09-04 22:04:56,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-09-04 22:04:56,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-04 22:04:56,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 73. [2020-09-04 22:04:56,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-04 22:04:56,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-09-04 22:04:56,791 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 82 [2020-09-04 22:04:56,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:04:56,793 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-09-04 22:04:56,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 22:04:56,793 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-09-04 22:04:56,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-04 22:04:56,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:04:56,800 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] [2020-09-04 22:04:56,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 22:04:56,800 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:04:56,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:04:56,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1050718625, now seen corresponding path program 1 times [2020-09-04 22:04:56,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:04:56,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868423355] [2020-09-04 22:04:56,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:04:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:56,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:04:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:57,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 22:04:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:57,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 22:04:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:57,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 22:04:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:57,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-04 22:04:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:57,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 22:04:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:57,143 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-04 22:04:57,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868423355] [2020-09-04 22:04:57,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:04:57,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 22:04:57,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563776062] [2020-09-04 22:04:57,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 22:04:57,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:04:57,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 22:04:57,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-04 22:04:57,147 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 10 states. [2020-09-04 22:04:57,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:04:57,743 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2020-09-04 22:04:57,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 22:04:57,743 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-09-04 22:04:57,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:04:57,748 INFO L225 Difference]: With dead ends: 113 [2020-09-04 22:04:57,748 INFO L226 Difference]: Without dead ends: 90 [2020-09-04 22:04:57,749 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 [2020-09-04 22:04:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-04 22:04:57,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2020-09-04 22:04:57,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-04 22:04:57,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-09-04 22:04:57,768 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 89 [2020-09-04 22:04:57,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:04:57,769 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-09-04 22:04:57,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 22:04:57,770 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-09-04 22:04:57,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-04 22:04:57,771 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:04:57,771 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] [2020-09-04 22:04:57,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 22:04:57,772 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:04:57,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:04:57,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1346991358, now seen corresponding path program 1 times [2020-09-04 22:04:57,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:04:57,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351414146] [2020-09-04 22:04:57,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:04:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:04:57,898 ERROR L253 erpolLogProxyWrapper]: Interpolant 18 not inductive [2020-09-04 22:04:57,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 22:04:57,900 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-09-04 22:04:57,907 INFO L168 Benchmark]: Toolchain (without parser) took 4164.36 ms. Allocated memory was 146.3 MB in the beginning and 246.9 MB in the end (delta: 100.7 MB). Free memory was 101.2 MB in the beginning and 207.7 MB in the end (delta: -106.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 22:04:57,908 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 146.3 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 22:04:57,909 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.04 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 101.0 MB in the beginning and 170.6 MB in the end (delta: -69.6 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-09-04 22:04:57,910 INFO L168 Benchmark]: Boogie Preprocessor took 67.91 ms. Allocated memory is still 205.0 MB. Free memory was 170.6 MB in the beginning and 168.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-04 22:04:57,911 INFO L168 Benchmark]: RCFGBuilder took 682.47 ms. Allocated memory is still 205.0 MB. Free memory was 168.0 MB in the beginning and 119.8 MB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 7.1 GB. [2020-09-04 22:04:57,912 INFO L168 Benchmark]: TraceAbstraction took 2717.42 ms. Allocated memory was 205.0 MB in the beginning and 246.9 MB in the end (delta: 41.9 MB). Free memory was 119.1 MB in the beginning and 207.7 MB in the end (delta: -88.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 22:04:57,916 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 146.3 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 691.04 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 101.0 MB in the beginning and 170.6 MB in the end (delta: -69.6 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.91 ms. Allocated memory is still 205.0 MB. Free memory was 170.6 MB in the beginning and 168.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 682.47 ms. Allocated memory is still 205.0 MB. Free memory was 168.0 MB in the beginning and 119.8 MB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2717.42 ms. Allocated memory was 205.0 MB in the beginning and 246.9 MB in the end (delta: 41.9 MB). Free memory was 119.1 MB in the beginning and 207.7 MB in the end (delta: -88.6 MB). There was no memory consumed. 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...