/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:18:59,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:18:59,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:18:59,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 22:18:59,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 22:18:59,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 22:18:59,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 22:18:59,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 22:18:59,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 22:18:59,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 22:18:59,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 22:18:59,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 22:18:59,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:18:59,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:18:59,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:18:59,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:18:59,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:18:59,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:18:59,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:18:59,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:18:59,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:18:59,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:18:59,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:18:59,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:18:59,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 22:18:59,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 22:18:59,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 22:18:59,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 22:18:59,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 22:18:59,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 22:18:59,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 22:18:59,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 22:18:59,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 22:18:59,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 22:18:59,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 22:18:59,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 22:18:59,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 22:18:59,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 22:18:59,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:18:59,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:18:59,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:18:59,537 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 22:18:59,552 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:18:59,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:18:59,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:18:59,555 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:18:59,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:18:59,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:18:59,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:18:59,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:18:59,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:18:59,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:18:59,557 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:18:59,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:18:59,557 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:18:59,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:18:59,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:18:59,558 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:18:59,559 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:18:59,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:18:59,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:18:59,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:18:59,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:18:59,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:18:59,560 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-08-22 22:18:59,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:18:59,878 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:18:59,885 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:18:59,887 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:18:59,887 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:18:59,888 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-08-22 22:18:59,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96e822d5f/341dd057c4a0490b872caa58cd0b4aed/FLAG2e526f6ae [2020-08-22 22:19:00,568 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:19:00,569 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-08-22 22:19:00,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96e822d5f/341dd057c4a0490b872caa58cd0b4aed/FLAG2e526f6ae [2020-08-22 22:19:00,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96e822d5f/341dd057c4a0490b872caa58cd0b4aed [2020-08-22 22:19:00,896 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:19:00,897 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:19:00,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:19:00,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:19:00,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:19:00,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:19:00" (1/1) ... [2020-08-22 22:19:00,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@539bb8e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:00, skipping insertion in model container [2020-08-22 22:19:00,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:19:00" (1/1) ... [2020-08-22 22:19:00,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:19:00,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:19:01,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:19:01,575 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:19:01,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:19:01,712 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:19:01,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:01 WrapperNode [2020-08-22 22:19:01,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:19:01,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:19:01,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:19:01,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:19:01,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:01" (1/1) ... [2020-08-22 22:19:01,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:01" (1/1) ... [2020-08-22 22:19:01,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:01" (1/1) ... [2020-08-22 22:19:01,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:01" (1/1) ... [2020-08-22 22:19:01,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:01" (1/1) ... [2020-08-22 22:19:01,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:01" (1/1) ... [2020-08-22 22:19:01,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:01" (1/1) ... [2020-08-22 22:19:01,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:19:01,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:19:01,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:19:01,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:19:01,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:01" (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 22:19:01,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:19:01,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:19:01,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-08-22 22:19:01,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-08-22 22:19:01,851 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-08-22 22:19:01,851 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-08-22 22:19:01,851 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-08-22 22:19:01,851 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:19:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:19:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-08-22 22:19:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-08-22 22:19:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-08-22 22:19:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-08-22 22:19:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-08-22 22:19:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-08-22 22:19:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-08-22 22:19:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-08-22 22:19:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-08-22 22:19:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-08-22 22:19:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-08-22 22:19:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-08-22 22:19:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-08-22 22:19:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-08-22 22:19:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-08-22 22:19:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-08-22 22:19:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-08-22 22:19:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-08-22 22:19:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-08-22 22:19:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-08-22 22:19:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-08-22 22:19:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-08-22 22:19:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-08-22 22:19:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-08-22 22:19:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-08-22 22:19:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-08-22 22:19:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-08-22 22:19:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-08-22 22:19:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-08-22 22:19:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-08-22 22:19:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-08-22 22:19:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-08-22 22:19:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-08-22 22:19:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-08-22 22:19:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-08-22 22:19:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-08-22 22:19:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-08-22 22:19:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-08-22 22:19:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-08-22 22:19:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 22:19:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-08-22 22:19:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-08-22 22:19:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-08-22 22:19:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-08-22 22:19:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-08-22 22:19:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-08-22 22:19:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-08-22 22:19:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-08-22 22:19:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-08-22 22:19:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-08-22 22:19:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-08-22 22:19:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-08-22 22:19:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-08-22 22:19:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-08-22 22:19:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-08-22 22:19:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-08-22 22:19:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-08-22 22:19:01,869 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-08-22 22:19:01,869 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-08-22 22:19:01,869 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-08-22 22:19:01,869 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-08-22 22:19:01,869 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-08-22 22:19:01,869 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-08-22 22:19:01,869 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-08-22 22:19:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-08-22 22:19:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-08-22 22:19:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-08-22 22:19:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-08-22 22:19:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-08-22 22:19:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-08-22 22:19:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-08-22 22:19:01,871 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-08-22 22:19:01,871 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-08-22 22:19:01,871 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-08-22 22:19:01,871 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-08-22 22:19:01,871 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-08-22 22:19:01,871 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-08-22 22:19:01,871 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-08-22 22:19:01,872 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-08-22 22:19:01,872 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-08-22 22:19:01,872 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-08-22 22:19:01,872 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-08-22 22:19:01,872 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-08-22 22:19:01,872 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-08-22 22:19:01,873 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-08-22 22:19:01,873 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-08-22 22:19:01,873 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-08-22 22:19:01,873 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-08-22 22:19:01,873 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-08-22 22:19:01,873 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-08-22 22:19:01,873 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-08-22 22:19:01,874 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-08-22 22:19:01,874 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-08-22 22:19:01,874 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-08-22 22:19:01,874 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-08-22 22:19:01,874 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-08-22 22:19:01,874 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-08-22 22:19:01,874 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-08-22 22:19:01,875 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-08-22 22:19:01,876 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-08-22 22:19:01,876 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-08-22 22:19:01,876 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-08-22 22:19:01,876 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 22:19:01,876 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 22:19:01,876 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 22:19:01,876 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 22:19:01,877 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 22:19:01,877 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-08-22 22:19:01,877 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 22:19:01,877 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-08-22 22:19:01,877 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-08-22 22:19:01,877 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-08-22 22:19:01,877 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-08-22 22:19:01,877 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-08-22 22:19:01,878 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-08-22 22:19:01,878 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-08-22 22:19:01,878 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-08-22 22:19:01,878 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-08-22 22:19:01,878 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-08-22 22:19:01,878 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-08-22 22:19:01,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 22:19:01,879 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-08-22 22:19:01,879 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-08-22 22:19:01,880 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-08-22 22:19:01,880 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-08-22 22:19:01,880 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:19:01,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:19:01,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 22:19:01,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 22:19:01,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:19:01,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 22:19:01,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 22:19:01,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 22:19:02,484 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:19:02,485 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 22:19:02,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:19:02 BoogieIcfgContainer [2020-08-22 22:19:02,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:19:02,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:19:02,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:19:02,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:19:02,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:19:00" (1/3) ... [2020-08-22 22:19:02,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1482ea86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:19:02, skipping insertion in model container [2020-08-22 22:19:02,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:01" (2/3) ... [2020-08-22 22:19:02,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1482ea86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:19:02, skipping insertion in model container [2020-08-22 22:19:02,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:19:02" (3/3) ... [2020-08-22 22:19:02,518 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2020-08-22 22:19:02,527 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:19:02,536 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 22:19:02,550 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 22:19:02,575 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:19:02,575 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:19:02,575 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:19:02,576 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:19:02,576 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:19:02,576 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:19:02,576 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:19:02,576 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:19:02,590 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-08-22 22:19:02,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 22:19:02,600 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:19:02,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:19:02,601 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:19:02,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:19:02,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1490968618, now seen corresponding path program 1 times [2020-08-22 22:19:02,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:19:02,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218138346] [2020-08-22 22:19:02,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:19:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:02,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:19:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:19:02,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218138346] [2020-08-22 22:19:02,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:19:02,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 22:19:02,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453521102] [2020-08-22 22:19:02,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:19:02,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:19:02,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:19:02,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:19:03,001 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 7 states. [2020-08-22 22:19:03,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:19:03,534 INFO L93 Difference]: Finished difference Result 128 states and 157 transitions. [2020-08-22 22:19:03,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 22:19:03,536 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-08-22 22:19:03,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:19:03,549 INFO L225 Difference]: With dead ends: 128 [2020-08-22 22:19:03,550 INFO L226 Difference]: Without dead ends: 67 [2020-08-22 22:19:03,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-08-22 22:19:03,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-22 22:19:03,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2020-08-22 22:19:03,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-08-22 22:19:03,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-08-22 22:19:03,618 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 21 [2020-08-22 22:19:03,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:19:03,618 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-08-22 22:19:03,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:19:03,619 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-08-22 22:19:03,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 22:19:03,622 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:19:03,622 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 22:19:03,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:19:03,623 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:19:03,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:19:03,624 INFO L82 PathProgramCache]: Analyzing trace with hash -114203518, now seen corresponding path program 1 times [2020-08-22 22:19:03,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:19:03,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103875900] [2020-08-22 22:19:03,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:19:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:03,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:19:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:03,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 22:19:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:03,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:19:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:03,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 22:19:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:03,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:19:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:03,926 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-22 22:19:03,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103875900] [2020-08-22 22:19:03,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:19:03,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 22:19:03,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785554005] [2020-08-22 22:19:03,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 22:19:03,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:19:03,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 22:19:03,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 22:19:03,931 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 9 states. [2020-08-22 22:19:04,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:19:04,314 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2020-08-22 22:19:04,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 22:19:04,315 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-22 22:19:04,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:19:04,318 INFO L225 Difference]: With dead ends: 99 [2020-08-22 22:19:04,320 INFO L226 Difference]: Without dead ends: 73 [2020-08-22 22:19:04,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-08-22 22:19:04,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-08-22 22:19:04,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2020-08-22 22:19:04,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-22 22:19:04,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-08-22 22:19:04,369 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 61 [2020-08-22 22:19:04,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:19:04,370 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-08-22 22:19:04,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 22:19:04,371 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-08-22 22:19:04,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 22:19:04,377 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:19:04,378 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 22:19:04,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:19:04,379 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:19:04,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:19:04,380 INFO L82 PathProgramCache]: Analyzing trace with hash -577094017, now seen corresponding path program 1 times [2020-08-22 22:19:04,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:19:04,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332738192] [2020-08-22 22:19:04,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:19:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:04,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:19:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:04,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 22:19:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:04,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:19:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:04,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 22:19:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:04,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:19:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:04,640 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-22 22:19:04,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332738192] [2020-08-22 22:19:04,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:19:04,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 22:19:04,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286462112] [2020-08-22 22:19:04,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 22:19:04,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:19:04,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 22:19:04,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 22:19:04,645 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 9 states. [2020-08-22 22:19:04,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:19:04,924 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2020-08-22 22:19:04,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 22:19:04,925 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-22 22:19:04,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:19:04,927 INFO L225 Difference]: With dead ends: 102 [2020-08-22 22:19:04,927 INFO L226 Difference]: Without dead ends: 65 [2020-08-22 22:19:04,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-08-22 22:19:04,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-08-22 22:19:04,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2020-08-22 22:19:04,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-08-22 22:19:04,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2020-08-22 22:19:04,946 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 61 [2020-08-22 22:19:04,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:19:04,947 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2020-08-22 22:19:04,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 22:19:04,947 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-08-22 22:19:04,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 22:19:04,951 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:19:04,951 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 22:19:04,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 22:19:04,952 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:19:04,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:19:04,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1723385860, now seen corresponding path program 1 times [2020-08-22 22:19:04,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:19:04,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035955566] [2020-08-22 22:19:04,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:19:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:05,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:19:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:05,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 22:19:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:05,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:19:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:05,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 22:19:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:05,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:19:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:05,419 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-22 22:19:05,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035955566] [2020-08-22 22:19:05,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:19:05,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-22 22:19:05,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797291020] [2020-08-22 22:19:05,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 22:19:05,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:19:05,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 22:19:05,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-08-22 22:19:05,423 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 17 states. [2020-08-22 22:19:06,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:19:06,607 INFO L93 Difference]: Finished difference Result 108 states and 121 transitions. [2020-08-22 22:19:06,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 22:19:06,609 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 61 [2020-08-22 22:19:06,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:19:06,613 INFO L225 Difference]: With dead ends: 108 [2020-08-22 22:19:06,614 INFO L226 Difference]: Without dead ends: 105 [2020-08-22 22:19:06,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 22:19:06,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-08-22 22:19:06,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 88. [2020-08-22 22:19:06,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-08-22 22:19:06,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 101 transitions. [2020-08-22 22:19:06,676 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 101 transitions. Word has length 61 [2020-08-22 22:19:06,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:19:06,677 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 101 transitions. [2020-08-22 22:19:06,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 22:19:06,678 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 101 transitions. [2020-08-22 22:19:06,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 22:19:06,686 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:19:06,686 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 22:19:06,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 22:19:06,686 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:19:06,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:19:06,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1814582916, now seen corresponding path program 1 times [2020-08-22 22:19:06,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:19:06,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136088965] [2020-08-22 22:19:06,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:19:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:06,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:19:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:06,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 22:19:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:06,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:19:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:07,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 22:19:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:07,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:19:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:07,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 22:19:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:07,075 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 22:19:07,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136088965] [2020-08-22 22:19:07,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:19:07,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-22 22:19:07,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784957270] [2020-08-22 22:19:07,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 22:19:07,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:19:07,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 22:19:07,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-22 22:19:07,078 INFO L87 Difference]: Start difference. First operand 88 states and 101 transitions. Second operand 18 states. [2020-08-22 22:19:08,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:19:08,257 INFO L93 Difference]: Finished difference Result 113 states and 129 transitions. [2020-08-22 22:19:08,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 22:19:08,258 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 70 [2020-08-22 22:19:08,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:19:08,260 INFO L225 Difference]: With dead ends: 113 [2020-08-22 22:19:08,260 INFO L226 Difference]: Without dead ends: 104 [2020-08-22 22:19:08,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 22:19:08,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-08-22 22:19:08,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2020-08-22 22:19:08,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-08-22 22:19:08,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 107 transitions. [2020-08-22 22:19:08,303 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 107 transitions. Word has length 70 [2020-08-22 22:19:08,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:19:08,305 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 107 transitions. [2020-08-22 22:19:08,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 22:19:08,306 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 107 transitions. [2020-08-22 22:19:08,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-22 22:19:08,310 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:19:08,310 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 22:19:08,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 22:19:08,311 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:19:08,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:19:08,312 INFO L82 PathProgramCache]: Analyzing trace with hash 983151375, now seen corresponding path program 1 times [2020-08-22 22:19:08,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:19:08,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794415943] [2020-08-22 22:19:08,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:19:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:08,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:19:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:08,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 22:19:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:08,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:19:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:08,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 22:19:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:08,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:19:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:08,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 22:19:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:08,835 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 22:19:08,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794415943] [2020-08-22 22:19:08,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:19:08,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-22 22:19:08,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776168683] [2020-08-22 22:19:08,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-22 22:19:08,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:19:08,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-22 22:19:08,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-08-22 22:19:08,840 INFO L87 Difference]: Start difference. First operand 94 states and 107 transitions. Second operand 23 states. [2020-08-22 22:19:10,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:19:10,504 INFO L93 Difference]: Finished difference Result 112 states and 129 transitions. [2020-08-22 22:19:10,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 22:19:10,505 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 71 [2020-08-22 22:19:10,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:19:10,507 INFO L225 Difference]: With dead ends: 112 [2020-08-22 22:19:10,508 INFO L226 Difference]: Without dead ends: 105 [2020-08-22 22:19:10,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2020-08-22 22:19:10,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-08-22 22:19:10,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-08-22 22:19:10,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-08-22 22:19:10,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 114 transitions. [2020-08-22 22:19:10,528 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 114 transitions. Word has length 71 [2020-08-22 22:19:10,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:19:10,529 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 114 transitions. [2020-08-22 22:19:10,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-22 22:19:10,529 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 114 transitions. [2020-08-22 22:19:10,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-22 22:19:10,531 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:19:10,531 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1] [2020-08-22 22:19:10,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 22:19:10,531 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:19:10,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:19:10,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1660138148, now seen corresponding path program 1 times [2020-08-22 22:19:10,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:19:10,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978643435] [2020-08-22 22:19:10,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:19:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:10,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:19:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:10,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 22:19:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:10,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:19:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:10,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 22:19:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:10,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:19:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:10,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 22:19:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:10,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 22:19:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:10,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 22:19:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:11,002 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 22:19:11,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978643435] [2020-08-22 22:19:11,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:19:11,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-08-22 22:19:11,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820244981] [2020-08-22 22:19:11,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-08-22 22:19:11,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:19:11,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-08-22 22:19:11,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2020-08-22 22:19:11,008 INFO L87 Difference]: Start difference. First operand 103 states and 114 transitions. Second operand 24 states. [2020-08-22 22:19:12,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:19:12,547 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2020-08-22 22:19:12,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 22:19:12,548 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 85 [2020-08-22 22:19:12,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:19:12,551 INFO L225 Difference]: With dead ends: 118 [2020-08-22 22:19:12,551 INFO L226 Difference]: Without dead ends: 113 [2020-08-22 22:19:12,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=232, Invalid=1748, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 22:19:12,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-08-22 22:19:12,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2020-08-22 22:19:12,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-08-22 22:19:12,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2020-08-22 22:19:12,577 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 85 [2020-08-22 22:19:12,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:19:12,578 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2020-08-22 22:19:12,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-08-22 22:19:12,578 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2020-08-22 22:19:12,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-22 22:19:12,580 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:19:12,581 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1] [2020-08-22 22:19:12,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 22:19:12,581 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:19:12,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:19:12,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1173492322, now seen corresponding path program 2 times [2020-08-22 22:19:12,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:19:12,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683369515] [2020-08-22 22:19:12,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:19:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:12,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:19:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:12,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 22:19:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:12,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:19:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:12,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 22:19:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:12,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:19:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:12,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 22:19:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:12,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 22:19:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:12,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 22:19:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-22 22:19:12,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683369515] [2020-08-22 22:19:12,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:19:12,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 22:19:12,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636102097] [2020-08-22 22:19:12,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 22:19:12,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:19:12,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 22:19:12,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:19:12,803 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand 10 states. [2020-08-22 22:19:13,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:19:13,399 INFO L93 Difference]: Finished difference Result 127 states and 137 transitions. [2020-08-22 22:19:13,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 22:19:13,400 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-08-22 22:19:13,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:19:13,402 INFO L225 Difference]: With dead ends: 127 [2020-08-22 22:19:13,402 INFO L226 Difference]: Without dead ends: 111 [2020-08-22 22:19:13,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-08-22 22:19:13,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-22 22:19:13,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-08-22 22:19:13,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-22 22:19:13,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2020-08-22 22:19:13,425 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 85 [2020-08-22 22:19:13,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:19:13,425 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2020-08-22 22:19:13,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 22:19:13,425 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2020-08-22 22:19:13,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-08-22 22:19:13,427 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:19:13,427 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1] [2020-08-22 22:19:13,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 22:19:13,428 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:19:13,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:19:13,428 INFO L82 PathProgramCache]: Analyzing trace with hash 2046230471, now seen corresponding path program 1 times [2020-08-22 22:19:13,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:19:13,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456058115] [2020-08-22 22:19:13,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:19:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:13,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:19:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:13,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 22:19:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:13,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:19:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:13,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 22:19:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:13,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:19:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:13,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 22:19:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:13,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 22:19:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:13,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 22:19:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 22:19:13,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456058115] [2020-08-22 22:19:13,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:19:13,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-22 22:19:13,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122887768] [2020-08-22 22:19:13,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-22 22:19:13,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:19:13,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-22 22:19:13,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-08-22 22:19:13,802 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand 23 states. [2020-08-22 22:19:15,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:19:15,275 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2020-08-22 22:19:15,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 22:19:15,276 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2020-08-22 22:19:15,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:19:15,278 INFO L225 Difference]: With dead ends: 129 [2020-08-22 22:19:15,278 INFO L226 Difference]: Without dead ends: 112 [2020-08-22 22:19:15,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=214, Invalid=1766, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 22:19:15,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-08-22 22:19:15,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-08-22 22:19:15,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-22 22:19:15,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 120 transitions. [2020-08-22 22:19:15,311 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 120 transitions. Word has length 86 [2020-08-22 22:19:15,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:19:15,312 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 120 transitions. [2020-08-22 22:19:15,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-22 22:19:15,312 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 120 transitions. [2020-08-22 22:19:15,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-08-22 22:19:15,314 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:19:15,315 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1] [2020-08-22 22:19:15,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 22:19:15,315 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:19:15,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:19:15,315 INFO L82 PathProgramCache]: Analyzing trace with hash -305538175, now seen corresponding path program 2 times [2020-08-22 22:19:15,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:19:15,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491957663] [2020-08-22 22:19:15,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:19:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:15,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:19:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:15,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 22:19:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:15,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:19:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:15,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 22:19:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:15,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:19:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:15,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 22:19:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:15,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 22:19:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:15,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 22:19:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-22 22:19:15,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491957663] [2020-08-22 22:19:15,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:19:15,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 22:19:15,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172910867] [2020-08-22 22:19:15,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 22:19:15,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:19:15,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 22:19:15,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-08-22 22:19:15,686 INFO L87 Difference]: Start difference. First operand 111 states and 120 transitions. Second operand 19 states. [2020-08-22 22:19:16,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:19:16,861 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-08-22 22:19:16,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 22:19:16,862 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 86 [2020-08-22 22:19:16,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:19:16,863 INFO L225 Difference]: With dead ends: 144 [2020-08-22 22:19:16,863 INFO L226 Difference]: Without dead ends: 131 [2020-08-22 22:19:16,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=253, Invalid=1469, Unknown=0, NotChecked=0, Total=1722 [2020-08-22 22:19:16,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-08-22 22:19:16,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 110. [2020-08-22 22:19:16,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-08-22 22:19:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2020-08-22 22:19:16,884 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 86 [2020-08-22 22:19:16,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:19:16,884 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2020-08-22 22:19:16,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 22:19:16,884 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2020-08-22 22:19:16,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-22 22:19:16,885 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:19:16,886 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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 22:19:16,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 22:19:16,886 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:19:16,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:19:16,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1959566780, now seen corresponding path program 1 times [2020-08-22 22:19:16,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:19:16,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333484904] [2020-08-22 22:19:16,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:19:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:16,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:19:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:17,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 22:19:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:17,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:19:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:17,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 22:19:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:17,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:19:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:17,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 22:19:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:17,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 22:19:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:17,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 22:19:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:17,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 22:19:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:17,232 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-22 22:19:17,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333484904] [2020-08-22 22:19:17,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:19:17,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 22:19:17,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678090586] [2020-08-22 22:19:17,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 22:19:17,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:19:17,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 22:19:17,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-08-22 22:19:17,236 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 19 states. [2020-08-22 22:19:18,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:19:18,539 INFO L93 Difference]: Finished difference Result 137 states and 144 transitions. [2020-08-22 22:19:18,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 22:19:18,540 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 94 [2020-08-22 22:19:18,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:19:18,541 INFO L225 Difference]: With dead ends: 137 [2020-08-22 22:19:18,542 INFO L226 Difference]: Without dead ends: 108 [2020-08-22 22:19:18,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2020-08-22 22:19:18,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-08-22 22:19:18,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 100. [2020-08-22 22:19:18,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-22 22:19:18,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2020-08-22 22:19:18,558 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 94 [2020-08-22 22:19:18,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:19:18,558 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2020-08-22 22:19:18,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 22:19:18,559 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2020-08-22 22:19:18,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-22 22:19:18,560 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:19:18,560 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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, 1, 1] [2020-08-22 22:19:18,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 22:19:18,560 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:19:18,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:19:18,561 INFO L82 PathProgramCache]: Analyzing trace with hash -416868516, now seen corresponding path program 1 times [2020-08-22 22:19:18,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:19:18,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853357977] [2020-08-22 22:19:18,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:19:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 22:19:18,580 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 22:19:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 22:19:18,598 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 22:19:18,652 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 22:19:18,652 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 22:19:18,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 22:19:18,727 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 13 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2020-08-22 22:19:18,729 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 16 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2020-08-22 22:19:18,730 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 16 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2020-08-22 22:19:18,731 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 13 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2020-08-22 22:19:18,740 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 16 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2020-08-22 22:19:18,740 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 13 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2020-08-22 22:19:18,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 10:19:18 BoogieIcfgContainer [2020-08-22 22:19:18,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 22:19:18,788 INFO L168 Benchmark]: Toolchain (without parser) took 17889.69 ms. Allocated memory was 140.0 MB in the beginning and 428.3 MB in the end (delta: 288.4 MB). Free memory was 102.7 MB in the beginning and 144.4 MB in the end (delta: -41.7 MB). Peak memory consumption was 246.6 MB. Max. memory is 7.1 GB. [2020-08-22 22:19:18,789 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 22:19:18,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 815.30 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.4 MB in the beginning and 167.6 MB in the end (delta: -65.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-08-22 22:19:18,791 INFO L168 Benchmark]: Boogie Preprocessor took 69.31 ms. Allocated memory is still 202.9 MB. Free memory was 167.6 MB in the beginning and 165.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-22 22:19:18,791 INFO L168 Benchmark]: RCFGBuilder took 712.14 ms. Allocated memory is still 202.9 MB. Free memory was 164.3 MB in the beginning and 117.0 MB in the end (delta: 47.3 MB). Peak memory consumption was 47.3 MB. Max. memory is 7.1 GB. [2020-08-22 22:19:18,792 INFO L168 Benchmark]: TraceAbstraction took 16286.13 ms. Allocated memory was 202.9 MB in the beginning and 428.3 MB in the end (delta: 225.4 MB). Free memory was 116.4 MB in the beginning and 144.4 MB in the end (delta: -28.0 MB). Peak memory consumption was 197.4 MB. Max. memory is 7.1 GB. [2020-08-22 22:19:18,796 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 815.30 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.4 MB in the beginning and 167.6 MB in the end (delta: -65.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.31 ms. Allocated memory is still 202.9 MB. Free memory was 167.6 MB in the beginning and 165.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 712.14 ms. Allocated memory is still 202.9 MB. Free memory was 164.3 MB in the beginning and 117.0 MB in the end (delta: 47.3 MB). Peak memory consumption was 47.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16286.13 ms. Allocated memory was 202.9 MB in the beginning and 428.3 MB in the end (delta: 225.4 MB). Free memory was 116.4 MB in the beginning and 144.4 MB in the end (delta: -28.0 MB). Peak memory consumption was 197.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 13 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 16 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 16 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 13 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 16 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 13 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L867] void * guard_malloc_counter = 0; VAL [\old(elem)=14, \old(elem)=9, \old(guard_malloc_counter)=12, \old(guard_malloc_counter)=11, \old(head)=null, \old(head)=null, elem={14:9}, guard_malloc_counter={0:0}, head={16:13}] [L887] struct list_head *elem = ((void *)0); VAL [\old(elem)=14, \old(elem)=9, \old(guard_malloc_counter)=11, \old(guard_malloc_counter)=12, \old(head)=null, \old(head)=null, elem={0:0}, guard_malloc_counter={0:0}, head={16:13}] [L900] static struct list_head head; VAL [\old(elem)=14, \old(elem)=9, \old(guard_malloc_counter)=11, \old(guard_malloc_counter)=12, \old(head)=null, \old(head)=null, elem={0:0}, guard_malloc_counter={0:0}, head={3:0}] [L903] struct list_head *dev1, *dev2; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:0}, head={3:0}] [L904] CALL, EXPR my_malloc(sizeof(*dev1)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={3:0}] [L879] CALL, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={3:0}] [L871] (size > 0) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={3:0}, size=8] [L872] guard_malloc_counter++ VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, size=8] [L873] COND FALSE !(!__VERIFIER_nondet_int()) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, __VERIFIER_nondet_int()=1, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, size=8] [L875] return (void *) guard_malloc_counter; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, \result={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, size=8] [L879] RET, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, __getMemory(size)={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, size=8] [L879] return __getMemory(size); VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, \result={0:1}, __getMemory(size)={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, size=8] [L904] RET, EXPR my_malloc(sizeof(*dev1)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, my_malloc(sizeof(*dev1))={0:1}] [L904] dev1 = my_malloc(sizeof(*dev1)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, my_malloc(sizeof(*dev1))={0:1}] [L905] CALL, EXPR my_malloc(sizeof(*dev2)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}] [L879] CALL, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}] [L871] (size > 0) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, size=8] [L872] guard_malloc_counter++ VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, size=8] [L873] COND FALSE !(!__VERIFIER_nondet_int()) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, __VERIFIER_nondet_int()=1, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, size=8] [L875] return (void *) guard_malloc_counter; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, \result={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, size=8] [L879] RET, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, __getMemory(size)={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, size=8] [L879] return __getMemory(size); VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, \result={0:2}, __getMemory(size)={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, size=8] [L905] RET, EXPR my_malloc(sizeof(*dev2)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, my_malloc(sizeof(*dev2))={0:2}] [L905] dev2 = my_malloc(sizeof(*dev2)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, my_malloc(sizeof(*dev2))={0:2}] [L906] COND TRUE dev1!=((void *)0) && dev2!=((void *)0) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}] [L907] CALL list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, new={0:2}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:2}, new={0:2}] [L891] COND FALSE !(__VERIFIER_nondet_int()) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, __VERIFIER_nondet_int()=0, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:2}, new={0:2}] [L907] RET list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}] [L908] CALL list_add(dev1, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, new={0:1}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:1}, new={0:1}] [L891] COND TRUE __VERIFIER_nondet_int() VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, __VERIFIER_nondet_int()=1, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:1}, new={0:1}] [L892] elem = new VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:1}, new={0:1}] [L908] RET list_add(dev1, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L909] CALL list_del(dev2) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, entry={0:2}, guard_malloc_counter={0:2}, head={3:0}] [L896] COND FALSE !(entry==elem) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, entry={0:2}, entry={0:2}, guard_malloc_counter={0:2}, head={3:0}] [L909] RET list_del(dev2) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L910] CALL list_add(dev2, &head) VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, new={0:2}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:2}, new={0:2}] [L891] COND FALSE !(__VERIFIER_nondet_int()) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, __VERIFIER_nondet_int()=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:2}, new={0:2}] [L910] RET list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L913] CALL list_add(dev1, &head) VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, new={0:1}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:1}, new={0:1}] [L890] CALL __blast_assert () VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L6] __VERIFIER_error() VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.0s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 629 SDtfs, 1113 SDslu, 2232 SDs, 0 SdLazy, 7486 SolverSat, 605 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 454 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 72 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 875 NumberOfCodeBlocks, 875 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 770 ConstructedInterpolants, 0 QuantifiedInterpolants, 225364 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 170/259 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...