/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-properties/list-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:04:01,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:04:01,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:04:01,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:04:01,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:04:01,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:04:01,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:04:01,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:04:01,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:04:01,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:04:01,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:04:01,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:04:01,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:04:01,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:04:01,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:04:01,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:04:01,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:04:01,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:04:01,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:04:01,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:04:01,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:04:01,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:04:01,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:04:01,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:04:01,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 19:04:01,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 19:04:01,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 19:04:01,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 19:04:01,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 19:04:01,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 19:04:01,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 19:04:01,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 19:04:01,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 19:04:01,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 19:04:01,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 19:04:01,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 19:04:01,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 19:04:01,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 19:04:01,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:04:01,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:04:01,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:04:01,641 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:04:01,650 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:04:01,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:04:01,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:04:01,652 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:04:01,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:04:01,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:04:01,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:04:01,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:04:01,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:04:01,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:04:01,653 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:04:01,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:04:01,654 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:04:01,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:04:01,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:04:01,654 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:04:01,654 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:04:01,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:04:01,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:04:01,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:04:01,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:04:01,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:04:01,656 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:04:01,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:04:01,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:04:01,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:04:01,986 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:04:01,987 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:04:01,988 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list-2.i [2020-08-22 19:04:02,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f5e311dc/e31b99cc26be40ae81fc2907fa3186bf/FLAG2664a8df6 [2020-08-22 19:04:02,544 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:04:02,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list-2.i [2020-08-22 19:04:02,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f5e311dc/e31b99cc26be40ae81fc2907fa3186bf/FLAG2664a8df6 [2020-08-22 19:04:02,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f5e311dc/e31b99cc26be40ae81fc2907fa3186bf [2020-08-22 19:04:02,833 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:04:02,835 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:04:02,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:04:02,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:04:02,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:04:02,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:04:02" (1/1) ... [2020-08-22 19:04:02,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@682567e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:02, skipping insertion in model container [2020-08-22 19:04:02,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:04:02" (1/1) ... [2020-08-22 19:04:02,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:04:02,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:04:03,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:04:03,327 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:04:03,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:04:03,442 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:04:03,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:03 WrapperNode [2020-08-22 19:04:03,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:04:03,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:04:03,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:04:03,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:04:03,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:03" (1/1) ... [2020-08-22 19:04:03,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:03" (1/1) ... [2020-08-22 19:04:03,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:03" (1/1) ... [2020-08-22 19:04:03,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:03" (1/1) ... [2020-08-22 19:04:03,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:03" (1/1) ... [2020-08-22 19:04:03,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:03" (1/1) ... [2020-08-22 19:04:03,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:03" (1/1) ... [2020-08-22 19:04:03,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:04:03,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:04:03,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:04:03,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:04:03,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:04:03,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:04:03,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:04:03,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-22 19:04:03,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-22 19:04:03,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-08-22 19:04:03,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-08-22 19:04:03,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-08-22 19:04:03,571 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-08-22 19:04:03,572 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:04:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:04:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:04:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 19:04:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 19:04:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 19:04:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 19:04:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 19:04:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 19:04:03,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 19:04:03,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 19:04:03,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 19:04:03,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 19:04:03,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 19:04:03,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 19:04:03,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 19:04:03,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 19:04:03,575 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 19:04:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 19:04:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-22 19:04:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-22 19:04:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-08-22 19:04:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-08-22 19:04:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-08-22 19:04:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 19:04:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 19:04:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 19:04:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 19:04:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 19:04:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 19:04:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 19:04:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 19:04:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 19:04:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 19:04:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 19:04:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 19:04:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 19:04:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 19:04:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 19:04:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 19:04:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 19:04:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 19:04:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 19:04:03,579 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 19:04:03,579 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 19:04:03,579 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 19:04:03,579 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 19:04:03,579 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 19:04:03,579 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 19:04:03,579 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 19:04:03,579 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 19:04:03,579 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 19:04:03,580 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 19:04:03,580 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 19:04:03,580 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 19:04:03,580 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 19:04:03,580 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 19:04:03,580 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 19:04:03,580 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 19:04:03,580 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 19:04:03,580 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 19:04:03,580 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 19:04:03,581 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 19:04:03,581 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 19:04:03,581 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 19:04:03,581 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 19:04:03,581 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 19:04:03,581 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 19:04:03,581 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 19:04:03,581 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 19:04:03,582 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 19:04:03,582 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 19:04:03,582 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 19:04:03,582 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 19:04:03,582 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 19:04:03,582 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 19:04:03,583 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 19:04:03,583 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 19:04:03,583 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 19:04:03,583 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 19:04:03,583 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 19:04:03,583 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 19:04:03,584 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 19:04:03,584 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 19:04:03,584 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 19:04:03,584 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 19:04:03,584 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 19:04:03,584 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 19:04:03,584 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 19:04:03,585 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 19:04:03,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 19:04:03,585 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 19:04:03,586 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 19:04:03,586 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 19:04:03,586 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 19:04:03,586 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 19:04:03,586 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 19:04:03,586 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 19:04:03,587 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 19:04:03,587 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 19:04:03,587 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 19:04:03,587 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 19:04:03,587 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 19:04:03,587 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 19:04:03,587 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 19:04:03,588 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 19:04:03,588 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 19:04:03,588 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 19:04:03,588 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 19:04:03,588 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 19:04:03,588 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-08-22 19:04:03,588 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:04:03,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 19:04:03,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 19:04:03,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 19:04:03,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 19:04:03,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 19:04:03,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:04:03,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:04:03,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 19:04:03,982 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-08-22 19:04:04,158 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:04:04,158 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 19:04:04,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:04:04 BoogieIcfgContainer [2020-08-22 19:04:04,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:04:04,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:04:04,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:04:04,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:04:04,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:04:02" (1/3) ... [2020-08-22 19:04:04,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4888952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:04:04, skipping insertion in model container [2020-08-22 19:04:04,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:03" (2/3) ... [2020-08-22 19:04:04,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4888952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:04:04, skipping insertion in model container [2020-08-22 19:04:04,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:04:04" (3/3) ... [2020-08-22 19:04:04,176 INFO L109 eAbstractionObserver]: Analyzing ICFG list-2.i [2020-08-22 19:04:04,186 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:04:04,194 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:04:04,208 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:04:04,231 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:04:04,231 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:04:04,231 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:04:04,232 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:04:04,232 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:04:04,232 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:04:04,232 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:04:04,232 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:04:04,246 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-08-22 19:04:04,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 19:04:04,257 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:04:04,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:04:04,258 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:04:04,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:04:04,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1227115345, now seen corresponding path program 1 times [2020-08-22 19:04:04,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:04:04,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114598978] [2020-08-22 19:04:04,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:04:04,336 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:04:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:04,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:04:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:04,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:04:04,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114598978] [2020-08-22 19:04:04,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:04:04,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:04:04,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006256158] [2020-08-22 19:04:04,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:04:04,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:04:04,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:04:04,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:04:04,496 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-08-22 19:04:04,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:04:04,686 INFO L93 Difference]: Finished difference Result 110 states and 128 transitions. [2020-08-22 19:04:04,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:04:04,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-22 19:04:04,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:04:04,697 INFO L225 Difference]: With dead ends: 110 [2020-08-22 19:04:04,697 INFO L226 Difference]: Without dead ends: 57 [2020-08-22 19:04:04,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:04:04,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-22 19:04:04,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-08-22 19:04:04,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-08-22 19:04:04,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-08-22 19:04:04,746 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 22 [2020-08-22 19:04:04,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:04:04,746 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-08-22 19:04:04,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:04:04,747 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-08-22 19:04:04,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 19:04:04,748 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:04:04,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:04:04,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:04:04,749 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:04:04,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:04:04,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1237633361, now seen corresponding path program 1 times [2020-08-22 19:04:04,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:04:04,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849214665] [2020-08-22 19:04:04,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:04:04,755 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:04:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:04,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:04:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:04:04,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849214665] [2020-08-22 19:04:04,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:04:04,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 19:04:04,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837084293] [2020-08-22 19:04:04,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 19:04:04,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:04:04,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 19:04:04,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 19:04:04,916 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 7 states. [2020-08-22 19:04:05,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:04:05,170 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-08-22 19:04:05,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 19:04:05,170 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-08-22 19:04:05,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:04:05,173 INFO L225 Difference]: With dead ends: 134 [2020-08-22 19:04:05,173 INFO L226 Difference]: Without dead ends: 128 [2020-08-22 19:04:05,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-22 19:04:05,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-08-22 19:04:05,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 70. [2020-08-22 19:04:05,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-08-22 19:04:05,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2020-08-22 19:04:05,192 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 30 [2020-08-22 19:04:05,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:04:05,193 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2020-08-22 19:04:05,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 19:04:05,193 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2020-08-22 19:04:05,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 19:04:05,194 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:04:05,195 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:04:05,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:04:05,195 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:04:05,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:04:05,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1213729417, now seen corresponding path program 1 times [2020-08-22 19:04:05,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:04:05,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494920660] [2020-08-22 19:04:05,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:04:05,220 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:04:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:05,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:04:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:05,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:04:05,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494920660] [2020-08-22 19:04:05,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:04:05,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 19:04:05,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985484525] [2020-08-22 19:04:05,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 19:04:05,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:04:05,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 19:04:05,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 19:04:05,338 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 7 states. [2020-08-22 19:04:05,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:04:05,565 INFO L93 Difference]: Finished difference Result 137 states and 145 transitions. [2020-08-22 19:04:05,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 19:04:05,565 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-08-22 19:04:05,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:04:05,567 INFO L225 Difference]: With dead ends: 137 [2020-08-22 19:04:05,567 INFO L226 Difference]: Without dead ends: 122 [2020-08-22 19:04:05,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-22 19:04:05,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-08-22 19:04:05,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 67. [2020-08-22 19:04:05,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-08-22 19:04:05,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2020-08-22 19:04:05,579 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 36 [2020-08-22 19:04:05,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:04:05,579 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2020-08-22 19:04:05,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 19:04:05,580 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2020-08-22 19:04:05,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 19:04:05,581 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:04:05,581 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:04:05,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:04:05,582 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:04:05,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:04:05,582 INFO L82 PathProgramCache]: Analyzing trace with hash -2044556103, now seen corresponding path program 1 times [2020-08-22 19:04:05,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:04:05,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513715135] [2020-08-22 19:04:05,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:04:05,593 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:04:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:05,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:04:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:05,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:04:05,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513715135] [2020-08-22 19:04:05,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:04:05,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 19:04:05,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105507475] [2020-08-22 19:04:05,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 19:04:05,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:04:05,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 19:04:05,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 19:04:05,682 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 7 states. [2020-08-22 19:04:05,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:04:05,903 INFO L93 Difference]: Finished difference Result 119 states and 126 transitions. [2020-08-22 19:04:05,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 19:04:05,904 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-08-22 19:04:05,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:04:05,905 INFO L225 Difference]: With dead ends: 119 [2020-08-22 19:04:05,905 INFO L226 Difference]: Without dead ends: 95 [2020-08-22 19:04:05,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-22 19:04:05,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-08-22 19:04:05,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 62. [2020-08-22 19:04:05,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-08-22 19:04:05,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-08-22 19:04:05,914 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 36 [2020-08-22 19:04:05,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:04:05,915 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-08-22 19:04:05,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 19:04:05,915 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-08-22 19:04:05,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 19:04:05,916 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:04:05,917 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:04:05,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 19:04:05,917 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:04:05,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:04:05,918 INFO L82 PathProgramCache]: Analyzing trace with hash -833752717, now seen corresponding path program 1 times [2020-08-22 19:04:05,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:04:05,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197499179] [2020-08-22 19:04:05,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:04:05,934 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:04:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:06,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:04:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:04:06,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197499179] [2020-08-22 19:04:06,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:04:06,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 19:04:06,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498802289] [2020-08-22 19:04:06,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 19:04:06,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:04:06,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 19:04:06,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-22 19:04:06,231 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 15 states. [2020-08-22 19:04:07,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:04:07,003 INFO L93 Difference]: Finished difference Result 157 states and 166 transitions. [2020-08-22 19:04:07,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 19:04:07,003 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-08-22 19:04:07,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:04:07,005 INFO L225 Difference]: With dead ends: 157 [2020-08-22 19:04:07,006 INFO L226 Difference]: Without dead ends: 144 [2020-08-22 19:04:07,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2020-08-22 19:04:07,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-22 19:04:07,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 78. [2020-08-22 19:04:07,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-22 19:04:07,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-08-22 19:04:07,023 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 41 [2020-08-22 19:04:07,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:04:07,023 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-08-22 19:04:07,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 19:04:07,024 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-08-22 19:04:07,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 19:04:07,025 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:04:07,025 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:04:07,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 19:04:07,026 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:04:07,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:04:07,026 INFO L82 PathProgramCache]: Analyzing trace with hash 865863745, now seen corresponding path program 1 times [2020-08-22 19:04:07,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:04:07,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157722371] [2020-08-22 19:04:07,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:04:07,038 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:04:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:07,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:04:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:07,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:04:07,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157722371] [2020-08-22 19:04:07,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:04:07,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 19:04:07,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100805813] [2020-08-22 19:04:07,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 19:04:07,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:04:07,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 19:04:07,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-22 19:04:07,241 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 15 states. [2020-08-22 19:04:08,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:04:08,026 INFO L93 Difference]: Finished difference Result 181 states and 193 transitions. [2020-08-22 19:04:08,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 19:04:08,026 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-08-22 19:04:08,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:04:08,028 INFO L225 Difference]: With dead ends: 181 [2020-08-22 19:04:08,028 INFO L226 Difference]: Without dead ends: 175 [2020-08-22 19:04:08,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2020-08-22 19:04:08,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-22 19:04:08,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 100. [2020-08-22 19:04:08,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-22 19:04:08,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2020-08-22 19:04:08,062 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 41 [2020-08-22 19:04:08,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:04:08,063 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2020-08-22 19:04:08,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 19:04:08,063 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2020-08-22 19:04:08,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 19:04:08,068 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:04:08,069 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:04:08,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 19:04:08,072 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:04:08,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:04:08,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1077832869, now seen corresponding path program 1 times [2020-08-22 19:04:08,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:04:08,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540110050] [2020-08-22 19:04:08,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:04:08,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 19:04:08,089 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:413) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:293) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-08-22 19:04:08,095 INFO L168 Benchmark]: Toolchain (without parser) took 5259.59 ms. Allocated memory was 144.2 MB in the beginning and 291.5 MB in the end (delta: 147.3 MB). Free memory was 99.1 MB in the beginning and 202.0 MB in the end (delta: -102.9 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. [2020-08-22 19:04:08,096 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 144.2 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 19:04:08,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 607.80 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 98.9 MB in the beginning and 168.9 MB in the end (delta: -70.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-08-22 19:04:08,098 INFO L168 Benchmark]: Boogie Preprocessor took 58.79 ms. Allocated memory is still 201.9 MB. Free memory was 168.9 MB in the beginning and 165.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-08-22 19:04:08,099 INFO L168 Benchmark]: RCFGBuilder took 661.40 ms. Allocated memory is still 201.9 MB. Free memory was 165.1 MB in the beginning and 117.1 MB in the end (delta: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 7.1 GB. [2020-08-22 19:04:08,100 INFO L168 Benchmark]: TraceAbstraction took 3926.69 ms. Allocated memory was 201.9 MB in the beginning and 291.5 MB in the end (delta: 89.7 MB). Free memory was 116.4 MB in the beginning and 202.0 MB in the end (delta: -85.6 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-22 19:04:08,104 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 144.2 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 607.80 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 98.9 MB in the beginning and 168.9 MB in the end (delta: -70.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.79 ms. Allocated memory is still 201.9 MB. Free memory was 168.9 MB in the beginning and 165.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 661.40 ms. Allocated memory is still 201.9 MB. Free memory was 165.1 MB in the beginning and 117.1 MB in the end (delta: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3926.69 ms. Allocated memory was 201.9 MB in the beginning and 291.5 MB in the end (delta: 89.7 MB). Free memory was 116.4 MB in the beginning and 202.0 MB in the end (delta: -85.6 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:413) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...