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 -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/heap-data/process_queue.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:29:09,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:29:09,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:29:09,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:29:09,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:29:09,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:29:09,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:29:09,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:29:09,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:29:09,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:29:09,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:29:09,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:29:09,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:29:09,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:29:09,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:29:09,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:29:09,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:29:09,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:29:09,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:29:09,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:29:09,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:29:09,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:29:09,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:29:09,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:29:09,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:29:09,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:29:09,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:29:09,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:29:09,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:29:09,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:29:09,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:29:09,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:29:09,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:29:09,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:29:09,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:29:09,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:29:09,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:29:09,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:29:09,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:29:09,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:29:09,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:29:09,636 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:29:09,651 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:29:09,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:29:09,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:29:09,652 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:29:09,652 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:29:09,653 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:29:09,653 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:29:09,653 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:29:09,653 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:29:09,653 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:29:09,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:29:09,654 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:29:09,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:29:09,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:29:09,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:29:09,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:29:09,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:29:09,656 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:29:09,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:29:09,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:29:09,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:29:09,657 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:29:09,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:29:09,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:29:09,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:29:09,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:29:09,658 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:29:09,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:29:09,659 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:29:09,659 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:29:09,709 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:29:09,725 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:29:09,729 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:29:09,732 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:29:09,733 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:29:09,734 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/process_queue.i [2019-09-20 13:29:09,805 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10fca1ac4/4761071777204dafa38e57c1ad09e8c0/FLAG1d12802d4 [2019-09-20 13:29:10,309 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:29:10,309 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-data/process_queue.i [2019-09-20 13:29:10,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10fca1ac4/4761071777204dafa38e57c1ad09e8c0/FLAG1d12802d4 [2019-09-20 13:29:10,595 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10fca1ac4/4761071777204dafa38e57c1ad09e8c0 [2019-09-20 13:29:10,605 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:29:10,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:29:10,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:29:10,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:29:10,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:29:10,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:29:10" (1/1) ... [2019-09-20 13:29:10,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c93357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:10, skipping insertion in model container [2019-09-20 13:29:10,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:29:10" (1/1) ... [2019-09-20 13:29:10,623 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:29:10,661 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:29:11,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:29:11,117 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:29:11,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:29:11,251 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:29:11,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:11 WrapperNode [2019-09-20 13:29:11,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:29:11,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:29:11,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:29:11,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:29:11,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:11" (1/1) ... [2019-09-20 13:29:11,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:11" (1/1) ... [2019-09-20 13:29:11,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:11" (1/1) ... [2019-09-20 13:29:11,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:11" (1/1) ... [2019-09-20 13:29:11,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:11" (1/1) ... [2019-09-20 13:29:11,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:11" (1/1) ... [2019-09-20 13:29:11,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:11" (1/1) ... [2019-09-20 13:29:11,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:29:11,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:29:11,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:29:11,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:29:11,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:11" (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 [2019-09-20 13:29:11,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:29:11,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:29:11,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-20 13:29:11,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-20 13:29:11,371 INFO L138 BoogieDeclarations]: Found implementation of procedure run_process [2019-09-20 13:29:11,371 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_queue [2019-09-20 13:29:11,371 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_next [2019-09-20 13:29:11,371 INFO L138 BoogieDeclarations]: Found implementation of procedure check_queue [2019-09-20 13:29:11,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:29:11,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:29:11,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:29:11,372 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-20 13:29:11,372 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-20 13:29:11,372 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-20 13:29:11,373 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-20 13:29:11,373 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-20 13:29:11,373 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-20 13:29:11,373 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-20 13:29:11,373 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-20 13:29:11,373 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-20 13:29:11,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-20 13:29:11,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-20 13:29:11,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-20 13:29:11,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-20 13:29:11,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-20 13:29:11,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-20 13:29:11,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-20 13:29:11,375 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-20 13:29:11,375 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-20 13:29:11,375 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-20 13:29:11,375 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-20 13:29:11,375 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-20 13:29:11,376 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-20 13:29:11,376 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-20 13:29:11,376 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-20 13:29:11,376 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-20 13:29:11,376 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-20 13:29:11,376 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-20 13:29:11,377 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-20 13:29:11,377 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-20 13:29:11,377 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-20 13:29:11,377 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-20 13:29:11,377 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-20 13:29:11,377 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-20 13:29:11,378 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-20 13:29:11,378 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-20 13:29:11,378 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-20 13:29:11,378 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-20 13:29:11,378 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-20 13:29:11,378 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-20 13:29:11,378 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-20 13:29:11,379 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-20 13:29:11,379 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-20 13:29:11,379 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-20 13:29:11,379 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-20 13:29:11,379 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-20 13:29:11,379 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-20 13:29:11,379 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-20 13:29:11,380 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-20 13:29:11,380 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-20 13:29:11,380 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-20 13:29:11,380 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-20 13:29:11,380 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-20 13:29:11,381 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:29:11,381 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-20 13:29:11,381 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-20 13:29:11,381 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:29:11,381 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-20 13:29:11,381 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-20 13:29:11,382 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-20 13:29:11,382 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-20 13:29:11,382 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-20 13:29:11,382 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-20 13:29:11,382 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-20 13:29:11,382 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-20 13:29:11,382 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-20 13:29:11,383 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-20 13:29:11,383 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-20 13:29:11,383 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-20 13:29:11,383 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-20 13:29:11,383 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-20 13:29:11,383 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-20 13:29:11,384 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-20 13:29:11,384 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-20 13:29:11,384 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-20 13:29:11,384 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-20 13:29:11,384 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-20 13:29:11,384 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-20 13:29:11,385 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-20 13:29:11,385 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-20 13:29:11,385 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-20 13:29:11,385 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-20 13:29:11,385 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-20 13:29:11,385 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-20 13:29:11,386 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-20 13:29:11,386 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-20 13:29:11,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-20 13:29:11,386 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-20 13:29:11,386 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-20 13:29:11,386 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-20 13:29:11,386 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-20 13:29:11,387 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-20 13:29:11,387 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-20 13:29:11,387 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-20 13:29:11,387 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-20 13:29:11,387 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-20 13:29:11,387 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-20 13:29:11,387 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-20 13:29:11,388 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-20 13:29:11,388 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-20 13:29:11,388 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-20 13:29:11,388 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-20 13:29:11,388 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-20 13:29:11,388 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-20 13:29:11,389 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-20 13:29:11,389 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-20 13:29:11,389 INFO L130 BoogieDeclarations]: Found specification of procedure run_process [2019-09-20 13:29:11,389 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_queue [2019-09-20 13:29:11,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:29:11,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:29:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure choose_next [2019-09-20 13:29:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:29:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:29:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure check_queue [2019-09-20 13:29:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:29:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:29:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:29:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-20 13:29:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:29:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:29:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:29:11,964 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:29:11,964 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-20 13:29:11,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:11 BoogieIcfgContainer [2019-09-20 13:29:11,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:29:11,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:29:11,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:29:11,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:29:11,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:29:10" (1/3) ... [2019-09-20 13:29:11,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b1e71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:11, skipping insertion in model container [2019-09-20 13:29:11,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:11" (2/3) ... [2019-09-20 13:29:11,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b1e71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:11, skipping insertion in model container [2019-09-20 13:29:11,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:11" (3/3) ... [2019-09-20 13:29:11,977 INFO L109 eAbstractionObserver]: Analyzing ICFG process_queue.i [2019-09-20 13:29:11,986 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:29:11,994 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:29:12,010 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:29:12,036 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:29:12,036 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:29:12,036 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:29:12,036 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:29:12,037 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:29:12,037 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:29:12,037 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:29:12,037 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:29:12,049 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-09-20 13:29:12,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-20 13:29:12,059 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:12,060 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:12,062 INFO L418 AbstractCegarLoop]: === Iteration 1 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:12,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:12,067 INFO L82 PathProgramCache]: Analyzing trace with hash -699499398, now seen corresponding path program 1 times [2019-09-20 13:29:12,070 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:12,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:12,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:12,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:12,136 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:12,363 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:12,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:29:12,364 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:12,371 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:29:12,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:29:12,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:29:12,390 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 6 states. [2019-09-20 13:29:12,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:12,560 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2019-09-20 13:29:12,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:29:12,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-09-20 13:29:12,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:12,573 INFO L225 Difference]: With dead ends: 60 [2019-09-20 13:29:12,574 INFO L226 Difference]: Without dead ends: 54 [2019-09-20 13:29:12,576 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:29:12,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-09-20 13:29:12,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2019-09-20 13:29:12,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-09-20 13:29:12,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2019-09-20 13:29:12,623 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 17 [2019-09-20 13:29:12,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:12,623 INFO L475 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2019-09-20 13:29:12,623 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:29:12,624 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2019-09-20 13:29:12,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-20 13:29:12,625 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:12,626 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:12,626 INFO L418 AbstractCegarLoop]: === Iteration 2 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:12,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:12,628 INFO L82 PathProgramCache]: Analyzing trace with hash -436646864, now seen corresponding path program 1 times [2019-09-20 13:29:12,628 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:12,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:12,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:12,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:12,638 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:13,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:13,063 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:13,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-09-20 13:29:13,064 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:13,066 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-20 13:29:13,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-20 13:29:13,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-09-20 13:29:13,068 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 11 states. [2019-09-20 13:29:14,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:14,040 INFO L93 Difference]: Finished difference Result 98 states and 129 transitions. [2019-09-20 13:29:14,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-20 13:29:14,041 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2019-09-20 13:29:14,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:14,046 INFO L225 Difference]: With dead ends: 98 [2019-09-20 13:29:14,046 INFO L226 Difference]: Without dead ends: 98 [2019-09-20 13:29:14,048 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:29:14,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-09-20 13:29:14,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 70. [2019-09-20 13:29:14,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-09-20 13:29:14,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2019-09-20 13:29:14,081 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 20 [2019-09-20 13:29:14,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:14,082 INFO L475 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2019-09-20 13:29:14,082 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-20 13:29:14,082 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2019-09-20 13:29:14,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-20 13:29:14,086 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:14,086 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:14,087 INFO L418 AbstractCegarLoop]: === Iteration 3 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:14,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:14,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1313067226, now seen corresponding path program 1 times [2019-09-20 13:29:14,087 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:14,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:14,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:14,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:14,095 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:14,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:14,516 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:29:14,516 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:29:14,517 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2019-09-20 13:29:14,519 INFO L207 CegarAbsIntRunner]: [2], [10], [13], [14], [17], [19], [26], [27], [28], [29], [30], [35], [40], [43], [49], [63], [104], [105], [110], [112], [113], [114] [2019-09-20 13:29:14,572 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:29:14,572 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:29:14,641 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:29:14,643 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 19 root evaluator evaluations with a maximum evaluation depth of 0. Performed 19 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 32 variables. [2019-09-20 13:29:14,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:14,647 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:29:14,677 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-20 13:29:14,677 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:29:14,679 INFO L420 sIntCurrentIteration]: We unified 22 AI predicates to 22 [2019-09-20 13:29:14,679 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:29:14,680 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:29:14,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 12 [2019-09-20 13:29:14,680 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:14,681 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:14,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:14,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:14,681 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand 2 states. [2019-09-20 13:29:14,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:14,682 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-20 13:29:14,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:14,682 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2019-09-20 13:29:14,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:14,683 INFO L225 Difference]: With dead ends: 6 [2019-09-20 13:29:14,683 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:29:14,683 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:14,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:29:14,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:29:14,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:29:14,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:29:14,684 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-09-20 13:29:14,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:14,684 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:29:14,685 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:14,685 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:29:14,685 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:29:14,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:29:14 BoogieIcfgContainer [2019-09-20 13:29:14,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:29:14,693 INFO L168 Benchmark]: Toolchain (without parser) took 4084.78 ms. Allocated memory was 136.8 MB in the beginning and 277.3 MB in the end (delta: 140.5 MB). Free memory was 83.5 MB in the beginning and 200.8 MB in the end (delta: -117.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:14,694 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 102.9 MB in the beginning and 102.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:29:14,695 INFO L168 Benchmark]: CACSL2BoogieTranslator took 643.85 ms. Allocated memory was 136.8 MB in the beginning and 197.1 MB in the end (delta: 60.3 MB). Free memory was 83.3 MB in the beginning and 161.1 MB in the end (delta: -77.8 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:14,696 INFO L168 Benchmark]: Boogie Preprocessor took 64.66 ms. Allocated memory is still 197.1 MB. Free memory was 161.1 MB in the beginning and 157.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:14,697 INFO L168 Benchmark]: RCFGBuilder took 649.14 ms. Allocated memory is still 197.1 MB. Free memory was 157.8 MB in the beginning and 109.9 MB in the end (delta: 47.9 MB). Peak memory consumption was 47.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:14,698 INFO L168 Benchmark]: TraceAbstraction took 2722.70 ms. Allocated memory was 197.1 MB in the beginning and 277.3 MB in the end (delta: 80.2 MB). Free memory was 109.2 MB in the beginning and 200.8 MB in the end (delta: -91.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:29:14,702 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 102.9 MB in the beginning and 102.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 643.85 ms. Allocated memory was 136.8 MB in the beginning and 197.1 MB in the end (delta: 60.3 MB). Free memory was 83.3 MB in the beginning and 161.1 MB in the end (delta: -77.8 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.66 ms. Allocated memory is still 197.1 MB. Free memory was 161.1 MB in the beginning and 157.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 649.14 ms. Allocated memory is still 197.1 MB. Free memory was 157.8 MB in the beginning and 109.9 MB in the end (delta: 47.9 MB). Peak memory consumption was 47.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2722.70 ms. Allocated memory was 197.1 MB in the beginning and 277.3 MB in the end (delta: 80.2 MB). Free memory was 109.2 MB in the beginning and 200.8 MB in the end (delta: -91.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 589]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 52 locations, 1 error locations. SAFE Result, 2.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 96 SDtfs, 91 SDslu, 354 SDs, 0 SdLazy, 477 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9659090909090909 AbsIntWeakeningRatio, 1.5909090909090908 AbsIntAvgWeakeningVarsNumRemoved, 0.2727272727272727 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 29 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 15063 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...