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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-data/packet_filter.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:07:50,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:07:50,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:07:50,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:07:50,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:07:50,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:07:50,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:07:50,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:07:50,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:07:50,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:07:50,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:07:50,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:07:50,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:07:50,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:07:50,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:07:50,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:07:50,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:07:50,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:07:50,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:07:50,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:07:50,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:07:50,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:07:50,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:07:50,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:07:50,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 22:07:50,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 22:07:50,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 22:07:50,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 22:07:50,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 22:07:50,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 22:07:50,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 22:07:50,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 22:07:50,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 22:07:50,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 22:07:50,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 22:07:50,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 22:07:50,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 22:07:50,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 22:07:50,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:07:50,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:07:50,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:07:50,621 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 22:07:50,641 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:07:50,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:07:50,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:07:50,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:07:50,645 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:07:50,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:07:50,645 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:07:50,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:07:50,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:07:50,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:07:50,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:07:50,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:07:50,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:07:50,648 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:07:50,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:07:50,649 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:07:50,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:07:50,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:07:50,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:07:50,650 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:07:50,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:07:50,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:07:50,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:07:50,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:07:50,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:07:50,655 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:07:50,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:07:50,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:07:50,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:07:50,912 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:07:50,925 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:07:50,928 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:07:50,930 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:07:50,930 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:07:50,931 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/packet_filter.i [2019-10-14 22:07:51,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33c96e7f9/d8dbd254124e4672b50381fc773e9774/FLAGcf22e4079 [2019-10-14 22:07:51,514 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:07:51,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-data/packet_filter.i [2019-10-14 22:07:51,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33c96e7f9/d8dbd254124e4672b50381fc773e9774/FLAGcf22e4079 [2019-10-14 22:07:51,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33c96e7f9/d8dbd254124e4672b50381fc773e9774 [2019-10-14 22:07:51,848 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:07:51,850 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:07:51,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:07:51,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:07:51,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:07:51,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:07:51" (1/1) ... [2019-10-14 22:07:51,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cd8f471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:07:51, skipping insertion in model container [2019-10-14 22:07:51,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:07:51" (1/1) ... [2019-10-14 22:07:51,866 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:07:51,919 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:07:52,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:07:52,384 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:07:52,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:07:52,517 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:07:52,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:07:52 WrapperNode [2019-10-14 22:07:52,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:07:52,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:07:52,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:07:52,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:07:52,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:07:52" (1/1) ... [2019-10-14 22:07:52,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:07:52" (1/1) ... [2019-10-14 22:07:52,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:07:52" (1/1) ... [2019-10-14 22:07:52,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:07:52" (1/1) ... [2019-10-14 22:07:52,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:07:52" (1/1) ... [2019-10-14 22:07:52,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:07:52" (1/1) ... [2019-10-14 22:07:52,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:07:52" (1/1) ... [2019-10-14 22:07:52,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:07:52,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:07:52,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:07:52,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:07:52,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:07:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:07:52,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:07:52,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:07:52,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-14 22:07:52,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-14 22:07:52,647 INFO L138 BoogieDeclarations]: Found implementation of procedure receive [2019-10-14 22:07:52,647 INFO L138 BoogieDeclarations]: Found implementation of procedure send [2019-10-14 22:07:52,648 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_queue [2019-10-14 22:07:52,648 INFO L138 BoogieDeclarations]: Found implementation of procedure process_prio_queue [2019-10-14 22:07:52,648 INFO L138 BoogieDeclarations]: Found implementation of procedure process_normal_queue [2019-10-14 22:07:52,648 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:07:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-14 22:07:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:07:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_charp [2019-10-14 22:07:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:07:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-14 22:07:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-14 22:07:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-14 22:07:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-14 22:07:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-14 22:07:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-14 22:07:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-14 22:07:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-14 22:07:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-14 22:07:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-14 22:07:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-14 22:07:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-14 22:07:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-14 22:07:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-14 22:07:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-14 22:07:52,652 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-14 22:07:52,652 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-14 22:07:52,652 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-14 22:07:52,652 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-14 22:07:52,652 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-14 22:07:52,652 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-14 22:07:52,653 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-14 22:07:52,653 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-14 22:07:52,653 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-14 22:07:52,653 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-14 22:07:52,653 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-14 22:07:52,653 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-14 22:07:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-14 22:07:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-14 22:07:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-14 22:07:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-14 22:07:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-14 22:07:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-14 22:07:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-14 22:07:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-14 22:07:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-14 22:07:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-14 22:07:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-14 22:07:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-14 22:07:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-14 22:07:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-14 22:07:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-14 22:07:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-14 22:07:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-14 22:07:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-14 22:07:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-14 22:07:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-14 22:07:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-14 22:07:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-14 22:07:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-14 22:07:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-14 22:07:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-14 22:07:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 22:07:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 22:07:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-14 22:07:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 22:07:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-14 22:07:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-14 22:07:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-14 22:07:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-14 22:07:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-14 22:07:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-14 22:07:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-14 22:07:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-14 22:07:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-14 22:07:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 22:07:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-14 22:07:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-14 22:07:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-14 22:07:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-14 22:07:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-14 22:07:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-14 22:07:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-14 22:07:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-14 22:07:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-14 22:07:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-14 22:07:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-14 22:07:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-14 22:07:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-14 22:07:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-14 22:07:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-14 22:07:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-14 22:07:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-14 22:07:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-14 22:07:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-14 22:07:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-14 22:07:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-14 22:07:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-14 22:07:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-14 22:07:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-14 22:07:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-14 22:07:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-14 22:07:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-14 22:07:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-14 22:07:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-14 22:07:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-14 22:07:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-14 22:07:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-14 22:07:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-14 22:07:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-14 22:07:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-14 22:07:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-14 22:07:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-14 22:07:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-14 22:07:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-14 22:07:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure receive [2019-10-14 22:07:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 22:07:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 22:07:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 22:07:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 22:07:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 22:07:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 22:07:52,666 INFO L130 BoogieDeclarations]: Found specification of procedure send [2019-10-14 22:07:52,666 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_queue [2019-10-14 22:07:52,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 22:07:52,666 INFO L130 BoogieDeclarations]: Found specification of procedure process_prio_queue [2019-10-14 22:07:52,666 INFO L130 BoogieDeclarations]: Found specification of procedure process_normal_queue [2019-10-14 22:07:52,666 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:07:52,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 22:07:52,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 22:07:52,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:07:52,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:07:53,351 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:07:53,352 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-14 22:07:53,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:07:53 BoogieIcfgContainer [2019-10-14 22:07:53,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:07:53,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:07:53,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:07:53,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:07:53,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:07:51" (1/3) ... [2019-10-14 22:07:53,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eacd0da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:07:53, skipping insertion in model container [2019-10-14 22:07:53,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:07:52" (2/3) ... [2019-10-14 22:07:53,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eacd0da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:07:53, skipping insertion in model container [2019-10-14 22:07:53,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:07:53" (3/3) ... [2019-10-14 22:07:53,375 INFO L109 eAbstractionObserver]: Analyzing ICFG packet_filter.i [2019-10-14 22:07:53,385 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:07:53,394 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-10-14 22:07:53,406 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-10-14 22:07:53,445 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:07:53,445 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:07:53,445 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:07:53,445 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:07:53,446 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:07:53,446 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:07:53,446 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:07:53,447 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:07:53,475 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2019-10-14 22:07:53,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-14 22:07:53,482 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:07:53,483 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:07:53,486 INFO L410 AbstractCegarLoop]: === Iteration 1 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:07:53,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:07:53,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1068933411, now seen corresponding path program 1 times [2019-10-14 22:07:53,501 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:07:53,502 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533781518] [2019-10-14 22:07:53,502 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:07:53,502 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:07:53,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:07:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:07:53,725 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533781518] [2019-10-14 22:07:53,726 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:07:53,726 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 22:07:53,727 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153023172] [2019-10-14 22:07:53,731 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 22:07:53,731 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:07:53,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 22:07:53,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 22:07:53,748 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 3 states. [2019-10-14 22:07:53,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:07:53,953 INFO L93 Difference]: Finished difference Result 100 states and 126 transitions. [2019-10-14 22:07:53,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 22:07:53,955 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-14 22:07:53,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:07:53,965 INFO L225 Difference]: With dead ends: 100 [2019-10-14 22:07:53,965 INFO L226 Difference]: Without dead ends: 57 [2019-10-14 22:07:53,969 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 22:07:53,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-14 22:07:54,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2019-10-14 22:07:54,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-10-14 22:07:54,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2019-10-14 22:07:54,025 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 14 [2019-10-14 22:07:54,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:07:54,025 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2019-10-14 22:07:54,025 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 22:07:54,025 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2019-10-14 22:07:54,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-14 22:07:54,027 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:07:54,027 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:07:54,028 INFO L410 AbstractCegarLoop]: === Iteration 2 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:07:54,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:07:54,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1316192133, now seen corresponding path program 1 times [2019-10-14 22:07:54,029 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:07:54,029 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13820844] [2019-10-14 22:07:54,030 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:07:54,030 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:07:54,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:07:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:54,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:07:54,168 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13820844] [2019-10-14 22:07:54,169 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:07:54,169 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:07:54,169 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859862657] [2019-10-14 22:07:54,171 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 22:07:54,171 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:07:54,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 22:07:54,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 22:07:54,172 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 4 states. [2019-10-14 22:07:54,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:07:54,422 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2019-10-14 22:07:54,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 22:07:54,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-10-14 22:07:54,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:07:54,424 INFO L225 Difference]: With dead ends: 60 [2019-10-14 22:07:54,424 INFO L226 Difference]: Without dead ends: 58 [2019-10-14 22:07:54,426 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:07:54,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-10-14 22:07:54,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2019-10-14 22:07:54,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-10-14 22:07:54,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2019-10-14 22:07:54,437 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 15 [2019-10-14 22:07:54,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:07:54,437 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2019-10-14 22:07:54,437 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 22:07:54,437 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2019-10-14 22:07:54,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-14 22:07:54,438 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:07:54,438 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:07:54,439 INFO L410 AbstractCegarLoop]: === Iteration 3 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:07:54,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:07:54,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1316190211, now seen corresponding path program 1 times [2019-10-14 22:07:54,439 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:07:54,439 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144184408] [2019-10-14 22:07:54,440 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:07:54,440 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:07:54,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:07:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:07:54,582 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144184408] [2019-10-14 22:07:54,582 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:07:54,582 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 22:07:54,583 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890583806] [2019-10-14 22:07:54,586 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 22:07:54,586 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:07:54,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 22:07:54,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:07:54,587 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 7 states. [2019-10-14 22:07:55,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:07:55,045 INFO L93 Difference]: Finished difference Result 95 states and 113 transitions. [2019-10-14 22:07:55,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 22:07:55,045 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-10-14 22:07:55,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:07:55,049 INFO L225 Difference]: With dead ends: 95 [2019-10-14 22:07:55,050 INFO L226 Difference]: Without dead ends: 68 [2019-10-14 22:07:55,051 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-14 22:07:55,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-10-14 22:07:55,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2019-10-14 22:07:55,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-10-14 22:07:55,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2019-10-14 22:07:55,074 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 15 [2019-10-14 22:07:55,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:07:55,075 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2019-10-14 22:07:55,075 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 22:07:55,075 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2019-10-14 22:07:55,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-14 22:07:55,076 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:07:55,077 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:07:55,077 INFO L410 AbstractCegarLoop]: === Iteration 4 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:07:55,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:07:55,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1729106577, now seen corresponding path program 1 times [2019-10-14 22:07:55,078 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:07:55,079 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043982902] [2019-10-14 22:07:55,079 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:07:55,079 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:07:55,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:07:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:55,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:07:55,334 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043982902] [2019-10-14 22:07:55,334 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:07:55,334 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 22:07:55,334 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933617618] [2019-10-14 22:07:55,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:07:55,335 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:07:55,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:07:55,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:07:55,336 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand 9 states. [2019-10-14 22:07:56,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:07:56,027 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2019-10-14 22:07:56,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 22:07:56,027 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2019-10-14 22:07:56,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:07:56,029 INFO L225 Difference]: With dead ends: 100 [2019-10-14 22:07:56,029 INFO L226 Difference]: Without dead ends: 78 [2019-10-14 22:07:56,030 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2019-10-14 22:07:56,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-10-14 22:07:56,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 60. [2019-10-14 22:07:56,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-10-14 22:07:56,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2019-10-14 22:07:56,040 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 21 [2019-10-14 22:07:56,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:07:56,040 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2019-10-14 22:07:56,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 22:07:56,040 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2019-10-14 22:07:56,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-14 22:07:56,041 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:07:56,042 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:07:56,042 INFO L410 AbstractCegarLoop]: === Iteration 5 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:07:56,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:07:56,042 INFO L82 PathProgramCache]: Analyzing trace with hash 453892566, now seen corresponding path program 1 times [2019-10-14 22:07:56,042 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:07:56,043 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886752427] [2019-10-14 22:07:56,043 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:07:56,043 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:07:56,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:07:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:56,611 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-10-14 22:07:56,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:07:56,617 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886752427] [2019-10-14 22:07:56,617 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367311267] [2019-10-14 22:07:56,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:07:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:56,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 41 conjunts are in the unsatisfiable core [2019-10-14 22:07:56,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:07:56,850 INFO L341 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-10-14 22:07:56,851 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2019-10-14 22:07:56,852 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 22:07:56,862 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:07:56,865 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 22:07:56,865 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:29 [2019-10-14 22:07:56,962 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:07:56,963 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 69 [2019-10-14 22:07:56,964 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 22:07:57,010 INFO L567 ElimStorePlain]: treesize reduction 28, result has 60.0 percent of original size [2019-10-14 22:07:57,011 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-10-14 22:07:57,011 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:40, output treesize:42 [2019-10-14 22:07:57,129 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 22:07:57,160 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:07:57,165 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 22:07:57,197 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:07:57,201 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 22:07:57,217 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:07:57,221 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 22:07:57,233 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:07:57,234 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-2 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-10-14 22:07:57,235 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:100, output treesize:48 [2019-10-14 22:07:59,376 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:07:59,377 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 37 [2019-10-14 22:07:59,378 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 22:07:59,408 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:07:59,418 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 22:07:59,420 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 22:07:59,421 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 22:07:59,423 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 36 [2019-10-14 22:07:59,424 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 22:07:59,454 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:07:59,470 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 22:07:59,471 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 22:07:59,472 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 22:07:59,477 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 36 [2019-10-14 22:07:59,477 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-14 22:07:59,529 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:07:59,531 INFO L496 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 22:07:59,531 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 13 variables, input treesize:89, output treesize:15 [2019-10-14 22:07:59,541 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-10-14 22:07:59,541 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 22:07:59,548 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:07:59,552 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-10-14 22:07:59,552 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 22:07:59,557 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:07:59,558 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 22:07:59,558 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2019-10-14 22:07:59,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:07:59,571 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:07:59,574 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2019-10-14 22:07:59,575 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570551741] [2019-10-14 22:07:59,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-14 22:07:59,575 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:07:59,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-14 22:07:59,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=198, Unknown=1, NotChecked=0, Total=240 [2019-10-14 22:07:59,576 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 16 states. [2019-10-14 22:08:02,009 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2019-10-14 22:08:02,441 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2019-10-14 22:08:15,807 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-10-14 22:08:16,429 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2019-10-14 22:08:17,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:08:17,204 INFO L93 Difference]: Finished difference Result 145 states and 180 transitions. [2019-10-14 22:08:17,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-14 22:08:17,207 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 26 [2019-10-14 22:08:17,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:08:17,209 INFO L225 Difference]: With dead ends: 145 [2019-10-14 22:08:17,209 INFO L226 Difference]: Without dead ends: 118 [2019-10-14 22:08:17,210 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=120, Invalid=580, Unknown=2, NotChecked=0, Total=702 [2019-10-14 22:08:17,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-10-14 22:08:17,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 72. [2019-10-14 22:08:17,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-10-14 22:08:17,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2019-10-14 22:08:17,223 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 26 [2019-10-14 22:08:17,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:08:17,223 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2019-10-14 22:08:17,224 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-14 22:08:17,224 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2019-10-14 22:08:17,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-14 22:08:17,225 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:08:17,225 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:08:17,431 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:08:17,431 INFO L410 AbstractCegarLoop]: === Iteration 6 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:08:17,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:08:17,432 INFO L82 PathProgramCache]: Analyzing trace with hash -845629304, now seen corresponding path program 1 times [2019-10-14 22:08:17,433 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:08:17,433 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073962281] [2019-10-14 22:08:17,434 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:08:17,434 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:08:17,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:08:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:08:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:08:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:08:17,859 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-10-14 22:08:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:08:17,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:08:17,899 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073962281] [2019-10-14 22:08:17,899 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047796886] [2019-10-14 22:08:17,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:08:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:08:18,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 41 conjunts are in the unsatisfiable core [2019-10-14 22:08:18,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:08:18,039 INFO L341 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-10-14 22:08:18,039 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2019-10-14 22:08:18,040 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 22:08:18,050 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:08:18,050 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 22:08:18,051 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:25 [2019-10-14 22:08:18,072 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:08:18,072 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2019-10-14 22:08:18,073 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 22:08:18,093 INFO L567 ElimStorePlain]: treesize reduction 14, result has 64.1 percent of original size [2019-10-14 22:08:18,094 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 22:08:18,095 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:25 [2019-10-14 22:08:18,172 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 22:08:18,204 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:08:18,208 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 22:08:18,231 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:08:18,236 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 22:08:18,252 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:08:18,255 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 22:08:18,275 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:08:18,276 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-2 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-10-14 22:08:18,277 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:100, output treesize:48 [2019-10-14 22:08:20,354 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:08:20,355 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-10-14 22:08:20,355 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 22:08:20,373 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:08:20,379 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 22:08:20,380 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 22:08:20,381 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 22:08:20,383 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 36 [2019-10-14 22:08:20,384 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 22:08:20,403 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:08:20,408 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 22:08:20,412 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 22:08:20,413 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 22:08:20,414 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 36 [2019-10-14 22:08:20,415 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-14 22:08:20,438 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:08:20,439 INFO L496 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 22:08:20,440 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 11 variables, input treesize:67, output treesize:15 [2019-10-14 22:08:20,468 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-10-14 22:08:20,469 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 22:08:20,475 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:08:20,478 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-10-14 22:08:20,478 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 22:08:20,481 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:08:20,482 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 22:08:20,482 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2019-10-14 22:08:20,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:08:20,489 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:08:20,489 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 16 [2019-10-14 22:08:20,490 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133499316] [2019-10-14 22:08:20,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-14 22:08:20,490 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:08:20,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-14 22:08:20,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=198, Unknown=1, NotChecked=0, Total=240 [2019-10-14 22:08:20,491 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand 16 states. [2019-10-14 22:08:39,589 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-10-14 22:08:40,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:08:40,615 INFO L93 Difference]: Finished difference Result 132 states and 163 transitions. [2019-10-14 22:08:40,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-14 22:08:40,617 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 32 [2019-10-14 22:08:40,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:08:40,618 INFO L225 Difference]: With dead ends: 132 [2019-10-14 22:08:40,618 INFO L226 Difference]: Without dead ends: 110 [2019-10-14 22:08:40,619 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=98, Invalid=451, Unknown=3, NotChecked=0, Total=552 [2019-10-14 22:08:40,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-10-14 22:08:40,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 66. [2019-10-14 22:08:40,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-10-14 22:08:40,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2019-10-14 22:08:40,630 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 32 [2019-10-14 22:08:40,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:08:40,631 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2019-10-14 22:08:40,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-14 22:08:40,631 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2019-10-14 22:08:40,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-14 22:08:40,632 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:08:40,632 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:08:40,836 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:08:40,837 INFO L410 AbstractCegarLoop]: === Iteration 7 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:08:40,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:08:40,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1958551269, now seen corresponding path program 1 times [2019-10-14 22:08:40,839 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:08:40,839 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023335533] [2019-10-14 22:08:40,839 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:08:40,839 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:08:40,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:08:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:08:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:08:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat