/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/heap-manipulation/dll_of_dll-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:01:39,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:01:39,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:01:39,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:01:39,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:01:39,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:01:39,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:01:39,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:01:39,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:01:39,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:01:39,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:01:39,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:01:39,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:01:39,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:01:39,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:01:39,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:01:39,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:01:39,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:01:39,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:01:39,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:01:39,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:01:39,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:01:39,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:01:39,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:01:39,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 19:01:39,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 19:01:39,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 19:01:39,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 19:01:39,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 19:01:39,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 19:01:39,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 19:01:39,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 19:01:39,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 19:01:39,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 19:01:39,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 19:01:39,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 19:01:39,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 19:01:39,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 19:01:39,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:01:39,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:01:39,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:01:39,591 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:01:39,609 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:01:39,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:01:39,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:01:39,611 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:01:39,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:01:39,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:01:39,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:01:39,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:01:39,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:01:39,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:01:39,614 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:01:39,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:01:39,615 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:01:39,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:01:39,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:01:39,615 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:01:39,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:01:39,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:01:39,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:01:39,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:01:39,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:01:39,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:01:39,617 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:01:39,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:01:39,908 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:01:39,912 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:01:39,913 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:01:39,914 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:01:39,914 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-22 19:01:39,978 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf197faec/227979be01d14cb686fb664fd1600391/FLAG5cf59012d [2020-08-22 19:01:40,516 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:01:40,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-22 19:01:40,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf197faec/227979be01d14cb686fb664fd1600391/FLAG5cf59012d [2020-08-22 19:01:40,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf197faec/227979be01d14cb686fb664fd1600391 [2020-08-22 19:01:40,872 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:01:40,874 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:01:40,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:01:40,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:01:40,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:01:40,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:01:40" (1/1) ... [2020-08-22 19:01:40,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11d97385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:01:40, skipping insertion in model container [2020-08-22 19:01:40,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:01:40" (1/1) ... [2020-08-22 19:01:40,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:01:40,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:01:41,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:01:41,385 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:01:41,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:01:41,506 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:01:41,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:01:41 WrapperNode [2020-08-22 19:01:41,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:01:41,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:01:41,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:01:41,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:01:41,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:01:41" (1/1) ... [2020-08-22 19:01:41,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:01:41" (1/1) ... [2020-08-22 19:01:41,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:01:41" (1/1) ... [2020-08-22 19:01:41,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:01:41" (1/1) ... [2020-08-22 19:01:41,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:01:41" (1/1) ... [2020-08-22 19:01:41,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:01:41" (1/1) ... [2020-08-22 19:01:41,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:01:41" (1/1) ... [2020-08-22 19:01:41,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:01:41,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:01:41,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:01:41,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:01:41,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:01:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:01:41,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:01:41,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:01:41,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 19:01:41,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-22 19:01:41,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-22 19:01:41,672 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-22 19:01:41,672 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-22 19:01:41,672 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-22 19:01:41,673 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-22 19:01:41,673 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-22 19:01:41,673 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-22 19:01:41,673 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-22 19:01:41,674 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-22 19:01:41,674 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-22 19:01:41,674 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-22 19:01:41,674 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-22 19:01:41,675 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-22 19:01:41,675 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-22 19:01:41,675 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-22 19:01:41,676 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-22 19:01:41,676 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-22 19:01:41,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:01:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:01:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 19:01:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 19:01:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 19:01:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 19:01:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 19:01:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 19:01:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 19:01:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 19:01:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 19:01:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 19:01:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 19:01:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 19:01:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 19:01:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 19:01:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 19:01:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 19:01:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-22 19:01:41,682 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-22 19:01:41,682 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 19:01:41,682 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 19:01:41,682 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 19:01:41,682 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 19:01:41,682 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 19:01:41,682 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 19:01:41,683 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 19:01:41,683 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 19:01:41,683 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 19:01:41,683 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 19:01:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 19:01:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 19:01:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 19:01:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 19:01:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 19:01:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 19:01:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 19:01:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 19:01:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 19:01:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 19:01:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 19:01:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 19:01:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 19:01:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 19:01:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 19:01:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 19:01:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 19:01:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 19:01:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 19:01:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 19:01:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 19:01:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 19:01:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 19:01:41,688 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 19:01:41,688 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 19:01:41,688 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 19:01:41,689 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 19:01:41,689 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 19:01:41,689 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 19:01:41,690 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 19:01:41,691 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 19:01:41,691 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 19:01:41,691 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 19:01:41,691 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 19:01:41,691 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 19:01:41,691 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 19:01:41,692 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 19:01:41,692 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 19:01:41,692 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 19:01:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 19:01:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 19:01:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 19:01:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 19:01:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 19:01:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 19:01:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 19:01:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 19:01:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 19:01:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 19:01:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 19:01:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 19:01:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 19:01:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 19:01:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 19:01:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 19:01:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 19:01:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 19:01:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 19:01:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 19:01:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 19:01:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 19:01:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 19:01:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 19:01:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 19:01:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 19:01:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 19:01:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 19:01:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 19:01:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 19:01:41,698 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 19:01:41,698 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 19:01:41,698 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 19:01:41,698 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 19:01:41,699 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 19:01:41,699 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 19:01:41,699 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 19:01:41,699 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 19:01:41,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:01:41,700 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-22 19:01:41,700 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-22 19:01:41,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 19:01:41,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 19:01:41,701 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-22 19:01:41,701 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-22 19:01:41,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 19:01:41,701 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-22 19:01:41,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 19:01:41,702 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 19:01:41,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 19:01:41,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 19:01:41,702 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-22 19:01:41,702 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-22 19:01:41,703 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-22 19:01:41,703 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-22 19:01:41,704 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-22 19:01:41,707 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-22 19:01:41,708 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-22 19:01:41,708 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-22 19:01:41,709 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-22 19:01:41,716 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-22 19:01:41,716 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-22 19:01:41,716 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:01:41,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:01:41,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:01:42,640 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:01:42,641 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-22 19:01:42,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:01:42 BoogieIcfgContainer [2020-08-22 19:01:42,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:01:42,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:01:42,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:01:42,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:01:42,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:01:40" (1/3) ... [2020-08-22 19:01:42,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3ceb22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:01:42, skipping insertion in model container [2020-08-22 19:01:42,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:01:41" (2/3) ... [2020-08-22 19:01:42,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3ceb22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:01:42, skipping insertion in model container [2020-08-22 19:01:42,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:01:42" (3/3) ... [2020-08-22 19:01:42,656 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-08-22 19:01:42,667 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:01:42,676 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:01:42,690 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:01:42,714 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:01:42,714 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:01:42,714 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:01:42,714 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:01:42,715 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:01:42,715 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:01:42,715 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:01:42,715 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:01:42,737 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states. [2020-08-22 19:01:42,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-22 19:01:42,752 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:01:42,754 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 19:01:42,755 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:01:42,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:01:42,761 INFO L82 PathProgramCache]: Analyzing trace with hash 575468621, now seen corresponding path program 1 times [2020-08-22 19:01:42,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:01:42,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015466388] [2020-08-22 19:01:42,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:01:42,848 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:01:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:43,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:01:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:43,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 19:01:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:43,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:01:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:43,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:01:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:43,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:01:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:43,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:01:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:43,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 19:01:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:43,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:01:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:43,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:01:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:43,441 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-22 19:01:43,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015466388] [2020-08-22 19:01:43,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:01:43,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 19:01:43,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810395769] [2020-08-22 19:01:43,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 19:01:43,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:01:43,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 19:01:43,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:01:43,475 INFO L87 Difference]: Start difference. First operand 276 states. Second operand 4 states. [2020-08-22 19:01:44,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:01:44,207 INFO L93 Difference]: Finished difference Result 568 states and 767 transitions. [2020-08-22 19:01:44,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 19:01:44,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-08-22 19:01:44,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:01:44,235 INFO L225 Difference]: With dead ends: 568 [2020-08-22 19:01:44,235 INFO L226 Difference]: Without dead ends: 275 [2020-08-22 19:01:44,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:01:44,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-08-22 19:01:44,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 255. [2020-08-22 19:01:44,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-08-22 19:01:44,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 284 transitions. [2020-08-22 19:01:44,386 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 284 transitions. Word has length 85 [2020-08-22 19:01:44,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:01:44,387 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 284 transitions. [2020-08-22 19:01:44,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:01:44,387 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 284 transitions. [2020-08-22 19:01:44,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-22 19:01:44,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:01:44,400 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 19:01:44,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:01:44,401 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:01:44,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:01:44,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1893520380, now seen corresponding path program 1 times [2020-08-22 19:01:44,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:01:44,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584805205] [2020-08-22 19:01:44,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:01:44,417 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:01:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:44,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:01:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:44,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 19:01:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:44,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:01:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:44,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:01:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:44,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:01:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:44,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:01:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:44,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 19:01:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:44,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:01:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:44,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:01:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:44,932 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-22 19:01:44,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584805205] [2020-08-22 19:01:44,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:01:44,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 19:01:44,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367016182] [2020-08-22 19:01:44,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 19:01:44,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:01:44,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 19:01:44,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-22 19:01:44,936 INFO L87 Difference]: Start difference. First operand 255 states and 284 transitions. Second operand 13 states. [2020-08-22 19:01:46,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:01:46,674 INFO L93 Difference]: Finished difference Result 542 states and 621 transitions. [2020-08-22 19:01:46,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 19:01:46,676 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 87 [2020-08-22 19:01:46,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:01:46,680 INFO L225 Difference]: With dead ends: 542 [2020-08-22 19:01:46,680 INFO L226 Difference]: Without dead ends: 296 [2020-08-22 19:01:46,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-08-22 19:01:46,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-08-22 19:01:46,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 276. [2020-08-22 19:01:46,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-08-22 19:01:46,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 307 transitions. [2020-08-22 19:01:46,722 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 307 transitions. Word has length 87 [2020-08-22 19:01:46,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:01:46,722 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 307 transitions. [2020-08-22 19:01:46,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 19:01:46,722 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 307 transitions. [2020-08-22 19:01:46,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-08-22 19:01:46,725 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:01:46,725 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 19:01:46,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:01:46,726 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:01:46,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:01:46,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1671014528, now seen corresponding path program 1 times [2020-08-22 19:01:46,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:01:46,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475634152] [2020-08-22 19:01:46,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:01:46,736 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:01:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:46,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:01:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:46,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 19:01:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:47,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:01:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:47,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:01:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:47,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:01:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:47,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:01:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:47,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 19:01:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:47,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:01:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:47,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:01:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:47,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:01:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:47,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:01:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:47,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 19:01:47,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:47,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:01:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:47,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:01:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:47,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 19:01:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:48,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:01:48,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:48,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:01:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:48,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 19:01:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:48,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:01:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:48,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:01:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:48,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:01:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:48,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:01:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:48,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 19:01:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:48,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:01:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:48,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:01:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 115 proven. 38 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-08-22 19:01:49,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475634152] [2020-08-22 19:01:49,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:01:49,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2020-08-22 19:01:49,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417173555] [2020-08-22 19:01:49,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-08-22 19:01:49,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:01:49,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-08-22 19:01:49,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1392, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 19:01:49,806 INFO L87 Difference]: Start difference. First operand 276 states and 307 transitions. Second operand 39 states. [2020-08-22 19:01:56,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:01:56,813 INFO L93 Difference]: Finished difference Result 574 states and 655 transitions. [2020-08-22 19:01:56,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-22 19:01:56,814 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 235 [2020-08-22 19:01:56,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:01:56,818 INFO L225 Difference]: With dead ends: 574 [2020-08-22 19:01:56,818 INFO L226 Difference]: Without dead ends: 311 [2020-08-22 19:01:56,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=327, Invalid=4785, Unknown=0, NotChecked=0, Total=5112 [2020-08-22 19:01:56,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-08-22 19:01:56,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 286. [2020-08-22 19:01:56,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-08-22 19:01:56,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 319 transitions. [2020-08-22 19:01:56,875 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 319 transitions. Word has length 235 [2020-08-22 19:01:56,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:01:56,876 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 319 transitions. [2020-08-22 19:01:56,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-08-22 19:01:56,876 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 319 transitions. [2020-08-22 19:01:56,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-08-22 19:01:56,881 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:01:56,885 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 19:01:56,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:01:56,886 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:01:56,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:01:56,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1561006854, now seen corresponding path program 1 times [2020-08-22 19:01:56,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:01:56,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221986839] [2020-08-22 19:01:56,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:01:56,893 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:01:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:57,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:01:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:57,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 19:01:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:57,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:01:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:57,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:01:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:57,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:01:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:57,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:01:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:57,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 19:01:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:57,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:01:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:57,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:01:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:57,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:01:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:57,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:01:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:57,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 19:01:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:57,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:01:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:57,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:01:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:58,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 19:01:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:58,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:01:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:58,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:01:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:58,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 19:01:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:58,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:01:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:58,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:01:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:58,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:01:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:58,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:01:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:58,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 19:01:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:58,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:01:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:58,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:01:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:01:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-08-22 19:01:59,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221986839] [2020-08-22 19:01:59,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:01:59,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2020-08-22 19:01:59,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582398963] [2020-08-22 19:01:59,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-08-22 19:01:59,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:01:59,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-08-22 19:01:59,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2020-08-22 19:01:59,006 INFO L87 Difference]: Start difference. First operand 286 states and 319 transitions. Second operand 32 states. [2020-08-22 19:02:00,589 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-08-22 19:02:00,781 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-08-22 19:02:05,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:02:05,051 INFO L93 Difference]: Finished difference Result 588 states and 663 transitions. [2020-08-22 19:02:05,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 19:02:05,053 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 237 [2020-08-22 19:02:05,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:02:05,058 INFO L225 Difference]: With dead ends: 588 [2020-08-22 19:02:05,058 INFO L226 Difference]: Without dead ends: 317 [2020-08-22 19:02:05,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=256, Invalid=2824, Unknown=0, NotChecked=0, Total=3080 [2020-08-22 19:02:05,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-08-22 19:02:05,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 295. [2020-08-22 19:02:05,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-08-22 19:02:05,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 329 transitions. [2020-08-22 19:02:05,099 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 329 transitions. Word has length 237 [2020-08-22 19:02:05,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:02:05,100 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 329 transitions. [2020-08-22 19:02:05,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-08-22 19:02:05,100 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 329 transitions. [2020-08-22 19:02:05,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-08-22 19:02:05,103 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:02:05,103 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 19:02:05,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 19:02:05,104 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:02:05,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:02:05,104 INFO L82 PathProgramCache]: Analyzing trace with hash -978473208, now seen corresponding path program 1 times [2020-08-22 19:02:05,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:02:05,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214930291] [2020-08-22 19:02:05,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:02:05,113 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:02:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:05,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:02:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:05,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 19:02:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:05,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:02:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:05,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:02:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:05,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:02:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:06,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:02:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:06,462 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-08-22 19:02:06,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 19:02:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:06,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:02:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:06,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:02:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:06,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:02:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:06,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:02:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:06,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 19:02:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:06,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:02:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:06,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:02:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:06,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 19:02:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:06,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:02:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:06,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:02:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:06,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 19:02:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:06,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:02:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:06,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:02:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:06,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:02:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:06,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:02:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:06,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 19:02:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:06,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:02:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:06,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:02:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:07,062 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-08-22 19:02:07,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214930291] [2020-08-22 19:02:07,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:02:07,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-08-22 19:02:07,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674242751] [2020-08-22 19:02:07,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-22 19:02:07,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:02:07,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-22 19:02:07,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-08-22 19:02:07,066 INFO L87 Difference]: Start difference. First operand 295 states and 329 transitions. Second operand 23 states. [2020-08-22 19:02:07,434 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-08-22 19:02:07,878 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-08-22 19:02:08,928 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-08-22 19:02:09,662 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-08-22 19:02:10,431 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-08-22 19:02:10,997 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-08-22 19:02:14,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:02:14,931 INFO L93 Difference]: Finished difference Result 592 states and 661 transitions. [2020-08-22 19:02:14,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 19:02:14,931 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 239 [2020-08-22 19:02:14,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:02:14,936 INFO L225 Difference]: With dead ends: 592 [2020-08-22 19:02:14,936 INFO L226 Difference]: Without dead ends: 315 [2020-08-22 19:02:14,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=117, Invalid=1005, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 19:02:14,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-08-22 19:02:14,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 295. [2020-08-22 19:02:14,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-08-22 19:02:14,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 327 transitions. [2020-08-22 19:02:14,996 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 327 transitions. Word has length 239 [2020-08-22 19:02:14,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:02:14,998 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 327 transitions. [2020-08-22 19:02:14,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-22 19:02:14,998 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 327 transitions. [2020-08-22 19:02:15,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-08-22 19:02:15,002 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:02:15,003 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 19:02:15,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 19:02:15,003 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:02:15,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:02:15,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1063198871, now seen corresponding path program 1 times [2020-08-22 19:02:15,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:02:15,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707054439] [2020-08-22 19:02:15,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:02:15,013 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:02:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:15,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:02:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:15,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 19:02:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:15,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:02:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:16,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:02:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:16,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:02:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:16,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:02:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:16,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 19:02:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:16,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:02:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:16,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:02:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:16,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:02:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:16,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:02:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:16,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 19:02:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:16,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:02:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:16,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:02:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:16,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 19:02:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:16,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:02:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:16,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:02:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:16,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 19:02:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:16,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:02:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:16,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:02:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:16,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:02:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:16,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:02:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:16,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 19:02:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:16,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:02:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:16,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:02:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:16,925 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-08-22 19:02:16,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707054439] [2020-08-22 19:02:16,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:02:16,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-08-22 19:02:16,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749913510] [2020-08-22 19:02:16,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-08-22 19:02:16,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:02:16,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-08-22 19:02:16,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-08-22 19:02:16,928 INFO L87 Difference]: Start difference. First operand 295 states and 327 transitions. Second operand 24 states. [2020-08-22 19:02:20,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:02:20,889 INFO L93 Difference]: Finished difference Result 527 states and 592 transitions. [2020-08-22 19:02:20,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-22 19:02:20,890 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 238 [2020-08-22 19:02:20,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:02:20,894 INFO L225 Difference]: With dead ends: 527 [2020-08-22 19:02:20,894 INFO L226 Difference]: Without dead ends: 417 [2020-08-22 19:02:20,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=169, Invalid=1811, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 19:02:20,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-22 19:02:20,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 332. [2020-08-22 19:02:20,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-08-22 19:02:20,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 369 transitions. [2020-08-22 19:02:20,930 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 369 transitions. Word has length 238 [2020-08-22 19:02:20,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:02:20,931 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 369 transitions. [2020-08-22 19:02:20,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-08-22 19:02:20,932 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 369 transitions. [2020-08-22 19:02:20,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-08-22 19:02:20,934 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:02:20,935 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 19:02:20,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 19:02:20,935 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:02:20,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:02:20,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1682472288, now seen corresponding path program 1 times [2020-08-22 19:02:20,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:02:20,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949662438] [2020-08-22 19:02:20,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:02:20,943 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:02:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:21,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:02:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:21,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 19:02:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:21,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:02:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:21,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:02:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:22,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:02:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:22,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:02:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:22,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 19:02:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:22,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:02:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:22,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:02:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:22,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:02:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:22,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:02:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:22,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 19:02:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:22,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:02:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:22,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:02:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:22,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 19:02:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:23,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:02:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:24,149 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-08-22 19:02:24,361 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2020-08-22 19:02:24,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:02:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:25,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 19:02:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:02:26,541 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-08-22 19:02:26,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:02:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:00,192 WARN L193 SmtUtils]: Spent 47.83 s on a formula simplification. DAG size of input: 926 DAG size of output: 48