/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/forester-heap/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:25:24,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:25:24,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:25:24,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:25:24,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:25:24,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:25:24,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:25:24,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:25:24,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:25:24,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:25:24,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:25:24,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:25:24,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:25:24,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:25:24,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:25:24,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:25:24,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:25:24,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:25:24,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:25:24,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:25:24,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:25:24,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:25:24,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:25:24,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:25:24,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:25:24,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:25:24,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:25:24,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:25:24,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:25:24,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:25:24,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:25:24,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:25:24,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:25:24,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:25:24,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:25:24,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:25:24,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:25:24,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:25:24,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:25:24,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:25:24,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:25:24,581 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:25:24,595 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:25:24,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:25:24,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:25:24,598 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:25:24,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:25:24,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:25:24,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:25:24,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:25:24,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:25:24,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:25:24,601 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:25:24,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:25:24,601 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:25:24,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:25:24,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:25:24,602 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:25:24,602 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:25:24,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:25:24,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:25:24,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:25:24,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:25:24,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:25:24,603 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:25:24,919 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:25:24,932 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:25:24,936 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:25:24,937 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:25:24,938 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:25:24,938 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-07-07 13:25:25,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca4b0874f/578a40842ac94500bb0bebe49f8404dd/FLAGd8f2159e3 [2020-07-07 13:25:25,536 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:25:25,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-07-07 13:25:25,551 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca4b0874f/578a40842ac94500bb0bebe49f8404dd/FLAGd8f2159e3 [2020-07-07 13:25:25,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca4b0874f/578a40842ac94500bb0bebe49f8404dd [2020-07-07 13:25:25,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:25:25,825 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:25:25,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:25,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:25:25,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:25:25,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:25" (1/1) ... [2020-07-07 13:25:25,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31f9e3ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:25, skipping insertion in model container [2020-07-07 13:25:25,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:25" (1/1) ... [2020-07-07 13:25:25,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:25:25,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:25:26,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:26,295 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:25:26,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:26,395 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:25:26,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:26 WrapperNode [2020-07-07 13:25:26,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:26,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:25:26,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:25:26,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:25:26,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:26" (1/1) ... [2020-07-07 13:25:26,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:26" (1/1) ... [2020-07-07 13:25:26,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:26" (1/1) ... [2020-07-07 13:25:26,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:26" (1/1) ... [2020-07-07 13:25:26,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:26" (1/1) ... [2020-07-07 13:25:26,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:26" (1/1) ... [2020-07-07 13:25:26,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:26" (1/1) ... [2020-07-07 13:25:26,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:25:26,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:25:26,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:25:26,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:25:26,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:26" (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 [2020-07-07 13:25:26,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:25:26,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:25:26,548 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:25:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-07 13:25:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-07 13:25:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-07 13:25:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-07 13:25:26,549 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-07 13:25:26,549 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-07 13:25:26,549 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-07 13:25:26,549 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-07 13:25:26,549 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-07 13:25:26,549 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-07 13:25:26,549 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-07 13:25:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-07 13:25:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-07 13:25:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-07 13:25:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-07 13:25:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-07 13:25:26,551 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-07 13:25:26,551 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-07 13:25:26,551 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-07 13:25:26,551 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-07 13:25:26,551 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-07 13:25:26,551 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-07 13:25:26,552 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-07 13:25:26,552 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-07 13:25:26,552 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-07 13:25:26,552 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-07 13:25:26,552 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-07 13:25:26,552 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-07 13:25:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-07 13:25:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-07 13:25:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-07 13:25:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-07 13:25:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-07 13:25:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-07 13:25:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-07 13:25:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-07 13:25:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-07 13:25:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-07 13:25:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-07 13:25:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-07 13:25:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-07 13:25:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-07 13:25:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-07 13:25:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-07 13:25:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-07 13:25:26,556 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-07 13:25:26,556 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-07 13:25:26,556 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-07 13:25:26,556 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-07 13:25:26,556 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-07 13:25:26,556 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:25:26,557 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 13:25:26,557 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 13:25:26,557 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 13:25:26,557 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-07 13:25:26,557 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-07 13:25:26,557 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 13:25:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-07 13:25:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-07 13:25:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 13:25:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-07 13:25:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-07 13:25:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-07 13:25:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 13:25:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-07 13:25:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-07 13:25:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-07 13:25:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-07 13:25:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-07 13:25:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-07 13:25:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-07 13:25:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-07 13:25:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-07 13:25:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-07 13:25:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-07 13:25:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-07 13:25:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-07 13:25:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-07 13:25:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-07 13:25:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-07 13:25:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-07 13:25:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-07 13:25:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-07 13:25:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-07 13:25:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-07 13:25:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-07 13:25:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-07 13:25:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-07 13:25:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-07 13:25:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-07 13:25:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-07 13:25:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-07 13:25:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-07 13:25:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-07 13:25:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-07 13:25:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-07 13:25:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-07 13:25:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-07 13:25:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-07 13:25:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-07 13:25:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-07 13:25:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-07 13:25:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-07 13:25:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:25:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:25:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:25:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 13:25:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 13:25:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 13:25:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:25:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:25:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:25:27,322 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:25:27,323 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-07-07 13:25:27,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:27 BoogieIcfgContainer [2020-07-07 13:25:27,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:25:27,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:25:27,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:25:27,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:25:27,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:25:25" (1/3) ... [2020-07-07 13:25:27,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c076dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:27, skipping insertion in model container [2020-07-07 13:25:27,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:26" (2/3) ... [2020-07-07 13:25:27,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c076dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:27, skipping insertion in model container [2020-07-07 13:25:27,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:27" (3/3) ... [2020-07-07 13:25:27,338 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-07-07 13:25:27,349 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:25:27,358 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-07-07 13:25:27,373 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-07-07 13:25:27,393 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:25:27,394 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:25:27,394 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:25:27,394 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:25:27,396 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:25:27,396 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:25:27,397 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:25:27,397 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:25:27,420 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-07-07 13:25:27,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-07 13:25:27,431 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:27,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:27,433 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:27,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:27,440 INFO L82 PathProgramCache]: Analyzing trace with hash 885652866, now seen corresponding path program 1 times [2020-07-07 13:25:27,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:27,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623883784] [2020-07-07 13:25:27,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:27,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:27,757 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:27,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623883784] [2020-07-07 13:25:27,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:27,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:25:27,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82888] [2020-07-07 13:25:27,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:25:27,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:27,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:25:27,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:25:27,790 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-07-07 13:25:28,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:28,280 INFO L93 Difference]: Finished difference Result 360 states and 478 transitions. [2020-07-07 13:25:28,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:25:28,282 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-07 13:25:28,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:28,296 INFO L225 Difference]: With dead ends: 360 [2020-07-07 13:25:28,297 INFO L226 Difference]: Without dead ends: 194 [2020-07-07 13:25:28,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:25:28,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-07-07 13:25:28,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-07-07 13:25:28,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-07-07 13:25:28,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 174 transitions. [2020-07-07 13:25:28,378 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 174 transitions. Word has length 12 [2020-07-07 13:25:28,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:28,379 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 174 transitions. [2020-07-07 13:25:28,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:25:28,379 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 174 transitions. [2020-07-07 13:25:28,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-07 13:25:28,380 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:28,381 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] [2020-07-07 13:25:28,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:25:28,382 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:28,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:28,382 INFO L82 PathProgramCache]: Analyzing trace with hash 684663316, now seen corresponding path program 1 times [2020-07-07 13:25:28,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:28,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242142270] [2020-07-07 13:25:28,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:28,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:28,476 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:28,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242142270] [2020-07-07 13:25:28,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:28,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:25:28,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949135421] [2020-07-07 13:25:28,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:25:28,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:28,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:25:28,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:25:28,479 INFO L87 Difference]: Start difference. First operand 164 states and 174 transitions. Second operand 4 states. [2020-07-07 13:25:28,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:28,745 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2020-07-07 13:25:28,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 13:25:28,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-07 13:25:28,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:28,748 INFO L225 Difference]: With dead ends: 170 [2020-07-07 13:25:28,748 INFO L226 Difference]: Without dead ends: 165 [2020-07-07 13:25:28,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:25:28,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-07-07 13:25:28,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-07-07 13:25:28,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-07-07 13:25:28,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2020-07-07 13:25:28,778 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 24 [2020-07-07 13:25:28,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:28,778 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2020-07-07 13:25:28,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:25:28,778 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2020-07-07 13:25:28,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-07 13:25:28,780 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:28,780 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] [2020-07-07 13:25:28,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:25:28,780 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:28,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:28,781 INFO L82 PathProgramCache]: Analyzing trace with hash -265499727, now seen corresponding path program 1 times [2020-07-07 13:25:28,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:28,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757475822] [2020-07-07 13:25:28,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:28,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:28,910 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:28,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757475822] [2020-07-07 13:25:28,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:28,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 13:25:28,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552846508] [2020-07-07 13:25:28,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 13:25:28,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:28,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 13:25:28,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:25:28,913 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand 8 states. [2020-07-07 13:25:29,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:29,472 INFO L93 Difference]: Finished difference Result 260 states and 277 transitions. [2020-07-07 13:25:29,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 13:25:29,473 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-07-07 13:25:29,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:29,476 INFO L225 Difference]: With dead ends: 260 [2020-07-07 13:25:29,476 INFO L226 Difference]: Without dead ends: 255 [2020-07-07 13:25:29,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-07-07 13:25:29,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-07-07 13:25:29,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 159. [2020-07-07 13:25:29,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-07-07 13:25:29,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2020-07-07 13:25:29,526 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 26 [2020-07-07 13:25:29,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:29,527 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2020-07-07 13:25:29,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 13:25:29,527 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2020-07-07 13:25:29,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-07 13:25:29,529 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:29,529 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, 1, 1] [2020-07-07 13:25:29,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:25:29,530 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:29,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:29,531 INFO L82 PathProgramCache]: Analyzing trace with hash 72562886, now seen corresponding path program 1 times [2020-07-07 13:25:29,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:29,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353485548] [2020-07-07 13:25:29,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:29,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:29,639 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:29,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353485548] [2020-07-07 13:25:29,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:29,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:25:29,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338783054] [2020-07-07 13:25:29,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:25:29,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:29,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:25:29,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:25:29,642 INFO L87 Difference]: Start difference. First operand 159 states and 169 transitions. Second operand 6 states. [2020-07-07 13:25:30,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:30,043 INFO L93 Difference]: Finished difference Result 382 states and 407 transitions. [2020-07-07 13:25:30,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 13:25:30,044 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-07-07 13:25:30,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:30,046 INFO L225 Difference]: With dead ends: 382 [2020-07-07 13:25:30,046 INFO L226 Difference]: Without dead ends: 253 [2020-07-07 13:25:30,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:25:30,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-07-07 13:25:30,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 162. [2020-07-07 13:25:30,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-07-07 13:25:30,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 172 transitions. [2020-07-07 13:25:30,072 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 172 transitions. Word has length 32 [2020-07-07 13:25:30,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:30,072 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 172 transitions. [2020-07-07 13:25:30,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:25:30,072 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 172 transitions. [2020-07-07 13:25:30,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-07 13:25:30,073 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:30,074 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, 1, 1, 1, 1] [2020-07-07 13:25:30,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:25:30,074 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:30,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:30,075 INFO L82 PathProgramCache]: Analyzing trace with hash 972027235, now seen corresponding path program 1 times [2020-07-07 13:25:30,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:30,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315959232] [2020-07-07 13:25:30,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:30,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:30,167 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:30,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315959232] [2020-07-07 13:25:30,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:30,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:25:30,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880586373] [2020-07-07 13:25:30,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:25:30,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:30,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:25:30,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:25:30,171 INFO L87 Difference]: Start difference. First operand 162 states and 172 transitions. Second operand 6 states. [2020-07-07 13:25:30,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:30,459 INFO L93 Difference]: Finished difference Result 271 states and 288 transitions. [2020-07-07 13:25:30,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:25:30,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-07-07 13:25:30,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:30,462 INFO L225 Difference]: With dead ends: 271 [2020-07-07 13:25:30,462 INFO L226 Difference]: Without dead ends: 239 [2020-07-07 13:25:30,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:25:30,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-07-07 13:25:30,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 161. [2020-07-07 13:25:30,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-07-07 13:25:30,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 171 transitions. [2020-07-07 13:25:30,489 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 171 transitions. Word has length 34 [2020-07-07 13:25:30,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:30,489 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 171 transitions. [2020-07-07 13:25:30,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:25:30,490 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 171 transitions. [2020-07-07 13:25:30,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-07 13:25:30,498 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:30,498 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:30,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:25:30,499 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:30,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:30,500 INFO L82 PathProgramCache]: Analyzing trace with hash -401575995, now seen corresponding path program 1 times [2020-07-07 13:25:30,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:30,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455835228] [2020-07-07 13:25:30,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:30,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:30,587 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:30,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455835228] [2020-07-07 13:25:30,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:30,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 13:25:30,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685517656] [2020-07-07 13:25:30,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 13:25:30,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:30,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 13:25:30,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:25:30,589 INFO L87 Difference]: Start difference. First operand 161 states and 171 transitions. Second operand 7 states. [2020-07-07 13:25:31,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:31,051 INFO L93 Difference]: Finished difference Result 245 states and 261 transitions. [2020-07-07 13:25:31,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 13:25:31,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-07-07 13:25:31,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:31,053 INFO L225 Difference]: With dead ends: 245 [2020-07-07 13:25:31,053 INFO L226 Difference]: Without dead ends: 241 [2020-07-07 13:25:31,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-07-07 13:25:31,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-07-07 13:25:31,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 157. [2020-07-07 13:25:31,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-07-07 13:25:31,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 167 transitions. [2020-07-07 13:25:31,072 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 167 transitions. Word has length 38 [2020-07-07 13:25:31,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:31,073 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 167 transitions. [2020-07-07 13:25:31,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 13:25:31,073 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 167 transitions. [2020-07-07 13:25:31,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-07 13:25:31,074 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:31,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:31,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 13:25:31,074 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:31,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:31,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1938604912, now seen corresponding path program 1 times [2020-07-07 13:25:31,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:31,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940913259] [2020-07-07 13:25:31,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:31,120 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:31,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940913259] [2020-07-07 13:25:31,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:31,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:25:31,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289326967] [2020-07-07 13:25:31,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:25:31,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:31,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:25:31,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:25:31,122 INFO L87 Difference]: Start difference. First operand 157 states and 167 transitions. Second operand 4 states. [2020-07-07 13:25:31,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:31,357 INFO L93 Difference]: Finished difference Result 267 states and 287 transitions. [2020-07-07 13:25:31,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 13:25:31,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-07-07 13:25:31,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:31,359 INFO L225 Difference]: With dead ends: 267 [2020-07-07 13:25:31,359 INFO L226 Difference]: Without dead ends: 196 [2020-07-07 13:25:31,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:25:31,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-07-07 13:25:31,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 160. [2020-07-07 13:25:31,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-07-07 13:25:31,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2020-07-07 13:25:31,378 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 42 [2020-07-07 13:25:31,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:31,379 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2020-07-07 13:25:31,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:25:31,379 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2020-07-07 13:25:31,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-07 13:25:31,380 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:31,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:31,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 13:25:31,380 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:31,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:31,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1017153069, now seen corresponding path program 1 times [2020-07-07 13:25:31,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:31,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940758645] [2020-07-07 13:25:31,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:31,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:31,447 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:31,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940758645] [2020-07-07 13:25:31,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:31,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:25:31,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504508125] [2020-07-07 13:25:31,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:25:31,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:31,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:25:31,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:25:31,450 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand 4 states. [2020-07-07 13:25:31,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:31,686 INFO L93 Difference]: Finished difference Result 160 states and 171 transitions. [2020-07-07 13:25:31,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 13:25:31,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-07-07 13:25:31,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:31,688 INFO L225 Difference]: With dead ends: 160 [2020-07-07 13:25:31,688 INFO L226 Difference]: Without dead ends: 158 [2020-07-07 13:25:31,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:25:31,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-07-07 13:25:31,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-07-07 13:25:31,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-07-07 13:25:31,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 169 transitions. [2020-07-07 13:25:31,715 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 169 transitions. Word has length 44 [2020-07-07 13:25:31,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:31,716 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 169 transitions. [2020-07-07 13:25:31,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:25:31,716 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 169 transitions. [2020-07-07 13:25:31,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-07 13:25:31,718 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:31,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:31,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 13:25:31,719 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:31,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:31,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1203451366, now seen corresponding path program 1 times [2020-07-07 13:25:31,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:31,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092230942] [2020-07-07 13:25:31,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:31,949 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:31,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092230942] [2020-07-07 13:25:31,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:31,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 13:25:31,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731225241] [2020-07-07 13:25:31,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 13:25:31,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:31,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 13:25:31,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-07 13:25:31,952 INFO L87 Difference]: Start difference. First operand 158 states and 169 transitions. Second operand 11 states. [2020-07-07 13:25:32,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:32,739 INFO L93 Difference]: Finished difference Result 398 states and 427 transitions. [2020-07-07 13:25:32,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-07 13:25:32,741 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-07-07 13:25:32,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:32,744 INFO L225 Difference]: With dead ends: 398 [2020-07-07 13:25:32,744 INFO L226 Difference]: Without dead ends: 326 [2020-07-07 13:25:32,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-07-07 13:25:32,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-07-07 13:25:32,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 204. [2020-07-07 13:25:32,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-07-07 13:25:32,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 220 transitions. [2020-07-07 13:25:32,772 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 220 transitions. Word has length 48 [2020-07-07 13:25:32,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:32,772 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 220 transitions. [2020-07-07 13:25:32,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 13:25:32,772 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 220 transitions. [2020-07-07 13:25:32,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-07 13:25:32,773 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:32,773 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:32,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 13:25:32,774 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:32,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:32,774 INFO L82 PathProgramCache]: Analyzing trace with hash 2069783995, now seen corresponding path program 1 times [2020-07-07 13:25:32,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:32,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041385550] [2020-07-07 13:25:32,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:32,833 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:32,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041385550] [2020-07-07 13:25:32,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:32,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:25:32,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125519963] [2020-07-07 13:25:32,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:25:32,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:32,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:25:32,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:25:32,835 INFO L87 Difference]: Start difference. First operand 204 states and 220 transitions. Second operand 4 states. [2020-07-07 13:25:33,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:33,017 INFO L93 Difference]: Finished difference Result 211 states and 228 transitions. [2020-07-07 13:25:33,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 13:25:33,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-07-07 13:25:33,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:33,019 INFO L225 Difference]: With dead ends: 211 [2020-07-07 13:25:33,020 INFO L226 Difference]: Without dead ends: 206 [2020-07-07 13:25:33,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:25:33,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-07-07 13:25:33,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-07-07 13:25:33,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-07-07 13:25:33,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 222 transitions. [2020-07-07 13:25:33,045 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 222 transitions. Word has length 52 [2020-07-07 13:25:33,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:33,047 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 222 transitions. [2020-07-07 13:25:33,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:25:33,047 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 222 transitions. [2020-07-07 13:25:33,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-07 13:25:33,048 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:33,048 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:33,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 13:25:33,048 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:33,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:33,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1565892499, now seen corresponding path program 1 times [2020-07-07 13:25:33,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:33,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477765349] [2020-07-07 13:25:33,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:33,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:33,473 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:33,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477765349] [2020-07-07 13:25:33,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:33,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 13:25:33,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031000361] [2020-07-07 13:25:33,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 13:25:33,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:33,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 13:25:33,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-07-07 13:25:33,476 INFO L87 Difference]: Start difference. First operand 206 states and 222 transitions. Second operand 14 states. [2020-07-07 13:25:35,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:35,408 INFO L93 Difference]: Finished difference Result 636 states and 681 transitions. [2020-07-07 13:25:35,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-07 13:25:35,409 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-07-07 13:25:35,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:35,412 INFO L225 Difference]: With dead ends: 636 [2020-07-07 13:25:35,413 INFO L226 Difference]: Without dead ends: 633 [2020-07-07 13:25:35,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=252, Invalid=804, Unknown=0, NotChecked=0, Total=1056 [2020-07-07 13:25:35,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-07-07 13:25:35,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 225. [2020-07-07 13:25:35,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-07-07 13:25:35,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 243 transitions. [2020-07-07 13:25:35,465 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 243 transitions. Word has length 53 [2020-07-07 13:25:35,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:35,466 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 243 transitions. [2020-07-07 13:25:35,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 13:25:35,466 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 243 transitions. [2020-07-07 13:25:35,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-07 13:25:35,467 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:35,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:35,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 13:25:35,468 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:35,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:35,468 INFO L82 PathProgramCache]: Analyzing trace with hash 991929043, now seen corresponding path program 1 times [2020-07-07 13:25:35,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:35,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570517466] [2020-07-07 13:25:35,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:35,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:35,615 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:35,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570517466] [2020-07-07 13:25:35,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:35,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 13:25:35,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491761236] [2020-07-07 13:25:35,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 13:25:35,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:35,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 13:25:35,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:25:35,617 INFO L87 Difference]: Start difference. First operand 225 states and 243 transitions. Second operand 8 states. [2020-07-07 13:25:36,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:36,050 INFO L93 Difference]: Finished difference Result 321 states and 346 transitions. [2020-07-07 13:25:36,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-07 13:25:36,050 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-07-07 13:25:36,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:36,052 INFO L225 Difference]: With dead ends: 321 [2020-07-07 13:25:36,052 INFO L226 Difference]: Without dead ends: 291 [2020-07-07 13:25:36,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:25:36,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-07-07 13:25:36,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 275. [2020-07-07 13:25:36,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-07-07 13:25:36,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 301 transitions. [2020-07-07 13:25:36,099 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 301 transitions. Word has length 53 [2020-07-07 13:25:36,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:36,100 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 301 transitions. [2020-07-07 13:25:36,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 13:25:36,100 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 301 transitions. [2020-07-07 13:25:36,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-07 13:25:36,101 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:36,101 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:36,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-07 13:25:36,102 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:36,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:36,102 INFO L82 PathProgramCache]: Analyzing trace with hash -604385608, now seen corresponding path program 1 times [2020-07-07 13:25:36,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:36,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199588547] [2020-07-07 13:25:36,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:36,179 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:36,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199588547] [2020-07-07 13:25:36,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:36,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 13:25:36,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957103655] [2020-07-07 13:25:36,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 13:25:36,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:36,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 13:25:36,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:25:36,181 INFO L87 Difference]: Start difference. First operand 275 states and 301 transitions. Second operand 8 states. [2020-07-07 13:25:36,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:36,714 INFO L93 Difference]: Finished difference Result 298 states and 326 transitions. [2020-07-07 13:25:36,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 13:25:36,715 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-07-07 13:25:36,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:36,717 INFO L225 Difference]: With dead ends: 298 [2020-07-07 13:25:36,717 INFO L226 Difference]: Without dead ends: 293 [2020-07-07 13:25:36,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-07-07 13:25:36,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-07-07 13:25:36,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 268. [2020-07-07 13:25:36,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-07-07 13:25:36,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 293 transitions. [2020-07-07 13:25:36,772 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 293 transitions. Word has length 54 [2020-07-07 13:25:36,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:36,772 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 293 transitions. [2020-07-07 13:25:36,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 13:25:36,773 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 293 transitions. [2020-07-07 13:25:36,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-07 13:25:36,774 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:36,774 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, 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] [2020-07-07 13:25:36,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-07 13:25:36,774 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:36,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:36,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1636675303, now seen corresponding path program 1 times [2020-07-07 13:25:36,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:36,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487944613] [2020-07-07 13:25:36,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:37,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:37,114 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:37,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487944613] [2020-07-07 13:25:37,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:37,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-07 13:25:37,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093765950] [2020-07-07 13:25:37,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-07 13:25:37,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:37,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-07 13:25:37,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-07-07 13:25:37,116 INFO L87 Difference]: Start difference. First operand 268 states and 293 transitions. Second operand 16 states. [2020-07-07 13:25:39,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:39,085 INFO L93 Difference]: Finished difference Result 722 states and 782 transitions. [2020-07-07 13:25:39,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-07 13:25:39,086 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2020-07-07 13:25:39,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:39,090 INFO L225 Difference]: With dead ends: 722 [2020-07-07 13:25:39,090 INFO L226 Difference]: Without dead ends: 719 [2020-07-07 13:25:39,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2020-07-07 13:25:39,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2020-07-07 13:25:39,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 272. [2020-07-07 13:25:39,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-07-07 13:25:39,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 297 transitions. [2020-07-07 13:25:39,150 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 297 transitions. Word has length 57 [2020-07-07 13:25:39,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:39,150 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 297 transitions. [2020-07-07 13:25:39,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-07 13:25:39,150 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 297 transitions. [2020-07-07 13:25:39,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-07 13:25:39,151 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:39,152 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, 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] [2020-07-07 13:25:39,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-07 13:25:39,152 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:39,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:39,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1939208096, now seen corresponding path program 1 times [2020-07-07 13:25:39,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:39,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141218618] [2020-07-07 13:25:39,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:39,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:39,194 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:39,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141218618] [2020-07-07 13:25:39,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:39,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:25:39,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124406255] [2020-07-07 13:25:39,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:25:39,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:39,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:25:39,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:25:39,196 INFO L87 Difference]: Start difference. First operand 272 states and 297 transitions. Second operand 4 states. [2020-07-07 13:25:39,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:39,466 INFO L93 Difference]: Finished difference Result 277 states and 302 transitions. [2020-07-07 13:25:39,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 13:25:39,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-07-07 13:25:39,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:39,469 INFO L225 Difference]: With dead ends: 277 [2020-07-07 13:25:39,469 INFO L226 Difference]: Without dead ends: 275 [2020-07-07 13:25:39,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:25:39,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-07-07 13:25:39,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 270. [2020-07-07 13:25:39,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-07-07 13:25:39,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 295 transitions. [2020-07-07 13:25:39,515 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 295 transitions. Word has length 58 [2020-07-07 13:25:39,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:39,515 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 295 transitions. [2020-07-07 13:25:39,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:25:39,516 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 295 transitions. [2020-07-07 13:25:39,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-07-07 13:25:39,517 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:39,517 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:39,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-07 13:25:39,517 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:39,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:39,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1792411396, now seen corresponding path program 1 times [2020-07-07 13:25:39,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:39,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039393225] [2020-07-07 13:25:39,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:39,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:39,611 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:39,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039393225] [2020-07-07 13:25:39,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:39,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 13:25:39,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55902101] [2020-07-07 13:25:39,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 13:25:39,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:39,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 13:25:39,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:25:39,613 INFO L87 Difference]: Start difference. First operand 270 states and 295 transitions. Second operand 7 states. [2020-07-07 13:25:40,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:40,157 INFO L93 Difference]: Finished difference Result 421 states and 458 transitions. [2020-07-07 13:25:40,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 13:25:40,158 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-07-07 13:25:40,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:40,159 INFO L225 Difference]: With dead ends: 421 [2020-07-07 13:25:40,159 INFO L226 Difference]: Without dead ends: 312 [2020-07-07 13:25:40,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-07-07 13:25:40,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-07-07 13:25:40,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 270. [2020-07-07 13:25:40,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-07-07 13:25:40,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 293 transitions. [2020-07-07 13:25:40,222 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 293 transitions. Word has length 59 [2020-07-07 13:25:40,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:40,222 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 293 transitions. [2020-07-07 13:25:40,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 13:25:40,222 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 293 transitions. [2020-07-07 13:25:40,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-07 13:25:40,223 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:40,223 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, 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] [2020-07-07 13:25:40,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-07 13:25:40,224 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:40,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:40,224 INFO L82 PathProgramCache]: Analyzing trace with hash -984681049, now seen corresponding path program 1 times [2020-07-07 13:25:40,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:40,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926004552] [2020-07-07 13:25:40,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:40,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:40,601 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:40,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926004552] [2020-07-07 13:25:40,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:40,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-07 13:25:40,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235707875] [2020-07-07 13:25:40,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-07 13:25:40,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:40,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-07 13:25:40,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-07-07 13:25:40,604 INFO L87 Difference]: Start difference. First operand 270 states and 293 transitions. Second operand 16 states. [2020-07-07 13:25:42,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:42,469 INFO L93 Difference]: Finished difference Result 682 states and 727 transitions. [2020-07-07 13:25:42,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-07 13:25:42,469 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 62 [2020-07-07 13:25:42,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:42,475 INFO L225 Difference]: With dead ends: 682 [2020-07-07 13:25:42,475 INFO L226 Difference]: Without dead ends: 648 [2020-07-07 13:25:42,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=302, Invalid=958, Unknown=0, NotChecked=0, Total=1260 [2020-07-07 13:25:42,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-07-07 13:25:42,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 269. [2020-07-07 13:25:42,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-07-07 13:25:42,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 291 transitions. [2020-07-07 13:25:42,541 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 291 transitions. Word has length 62 [2020-07-07 13:25:42,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:42,541 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 291 transitions. [2020-07-07 13:25:42,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-07 13:25:42,542 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 291 transitions. [2020-07-07 13:25:42,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-07 13:25:42,543 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:42,543 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, 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] [2020-07-07 13:25:42,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-07 13:25:42,543 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:42,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:42,544 INFO L82 PathProgramCache]: Analyzing trace with hash -649286859, now seen corresponding path program 1 times [2020-07-07 13:25:42,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:42,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117170155] [2020-07-07 13:25:42,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:42,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:42,588 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:42,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117170155] [2020-07-07 13:25:42,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:42,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:25:42,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420546436] [2020-07-07 13:25:42,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:25:42,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:42,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:25:42,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:25:42,590 INFO L87 Difference]: Start difference. First operand 269 states and 291 transitions. Second operand 4 states. [2020-07-07 13:25:43,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:43,029 INFO L93 Difference]: Finished difference Result 447 states and 493 transitions. [2020-07-07 13:25:43,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 13:25:43,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-07-07 13:25:43,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:43,031 INFO L225 Difference]: With dead ends: 447 [2020-07-07 13:25:43,032 INFO L226 Difference]: Without dead ends: 350 [2020-07-07 13:25:43,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:25:43,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-07-07 13:25:43,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 302. [2020-07-07 13:25:43,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-07-07 13:25:43,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 330 transitions. [2020-07-07 13:25:43,140 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 330 transitions. Word has length 64 [2020-07-07 13:25:43,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:43,141 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 330 transitions. [2020-07-07 13:25:43,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:25:43,141 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 330 transitions. [2020-07-07 13:25:43,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-07-07 13:25:43,143 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:43,143 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:43,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-07 13:25:43,143 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:43,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:43,144 INFO L82 PathProgramCache]: Analyzing trace with hash -201437452, now seen corresponding path program 1 times [2020-07-07 13:25:43,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:43,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695083921] [2020-07-07 13:25:43,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:43,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-07 13:25:43,163 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:442) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:277) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-07 13:25:43,172 INFO L168 Benchmark]: Toolchain (without parser) took 17345.52 ms. Allocated memory was 138.4 MB in the beginning and 423.1 MB in the end (delta: 284.7 MB). Free memory was 101.1 MB in the beginning and 93.9 MB in the end (delta: 7.2 MB). Peak memory consumption was 291.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:43,173 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 138.4 MB. Free memory is still 120.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-07 13:25:43,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 569.71 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 100.6 MB in the beginning and 170.6 MB in the end (delta: -70.0 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:43,180 INFO L168 Benchmark]: Boogie Preprocessor took 76.00 ms. Allocated memory is still 202.9 MB. Free memory was 170.6 MB in the beginning and 166.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:43,181 INFO L168 Benchmark]: RCFGBuilder took 856.48 ms. Allocated memory is still 202.9 MB. Free memory was 166.7 MB in the beginning and 103.9 MB in the end (delta: 62.8 MB). Peak memory consumption was 62.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:43,183 INFO L168 Benchmark]: TraceAbstraction took 15838.26 ms. Allocated memory was 202.9 MB in the beginning and 423.1 MB in the end (delta: 220.2 MB). Free memory was 103.9 MB in the beginning and 93.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 230.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:43,189 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 138.4 MB. Free memory is still 120.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 569.71 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 100.6 MB in the beginning and 170.6 MB in the end (delta: -70.0 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 76.00 ms. Allocated memory is still 202.9 MB. Free memory was 170.6 MB in the beginning and 166.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 856.48 ms. Allocated memory is still 202.9 MB. Free memory was 166.7 MB in the beginning and 103.9 MB in the end (delta: 62.8 MB). Peak memory consumption was 62.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15838.26 ms. Allocated memory was 202.9 MB in the beginning and 423.1 MB in the end (delta: 220.2 MB). Free memory was 103.9 MB in the beginning and 93.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 230.3 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:442) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...