/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.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 03:38:51,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 03:38:51,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 03:38:51,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 03:38:51,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 03:38:51,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 03:38:51,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 03:38:51,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 03:38:51,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 03:38:51,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 03:38:51,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 03:38:51,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 03:38:51,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 03:38:51,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 03:38:51,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 03:38:51,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 03:38:51,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 03:38:51,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 03:38:51,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 03:38:51,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 03:38:51,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 03:38:51,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 03:38:51,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 03:38:51,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 03:38:51,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 03:38:51,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 03:38:51,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 03:38:51,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 03:38:51,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 03:38:51,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 03:38:51,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 03:38:51,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 03:38:51,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 03:38:51,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 03:38:51,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 03:38:51,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 03:38:51,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 03:38:51,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 03:38:51,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 03:38:51,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 03:38:51,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 03:38:51,659 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 03:38:51,674 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 03:38:51,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 03:38:51,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 03:38:51,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 03:38:51,676 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 03:38:51,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 03:38:51,677 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 03:38:51,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 03:38:51,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 03:38:51,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 03:38:51,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 03:38:51,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 03:38:51,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 03:38:51,678 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 03:38:51,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 03:38:51,678 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 03:38:51,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 03:38:51,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 03:38:51,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 03:38:51,679 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 03:38:51,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 03:38:51,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:38:51,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 03:38:51,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 03:38:51,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 03:38:51,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 03:38:51,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 03:38:51,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 03:38:51,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 03:38:51,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 03:38:51,974 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 03:38:51,990 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 03:38:51,994 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 03:38:51,996 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 03:38:51,996 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 03:38:51,998 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-07-20 03:38:52,073 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dc1c5b42/a724a614325f41809d0432f64ffded7b/FLAGc05b414d5 [2020-07-20 03:38:52,657 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 03:38:52,658 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-07-20 03:38:52,673 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dc1c5b42/a724a614325f41809d0432f64ffded7b/FLAGc05b414d5 [2020-07-20 03:38:52,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dc1c5b42/a724a614325f41809d0432f64ffded7b [2020-07-20 03:38:52,924 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 03:38:52,927 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 03:38:52,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 03:38:52,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 03:38:52,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 03:38:52,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:38:52" (1/1) ... [2020-07-20 03:38:52,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@778247a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:52, skipping insertion in model container [2020-07-20 03:38:52,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:38:52" (1/1) ... [2020-07-20 03:38:52,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 03:38:52,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 03:38:53,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:38:53,447 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 03:38:53,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:38:53,576 INFO L208 MainTranslator]: Completed translation [2020-07-20 03:38:53,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:53 WrapperNode [2020-07-20 03:38:53,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 03:38:53,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 03:38:53,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 03:38:53,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 03:38:53,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:53" (1/1) ... [2020-07-20 03:38:53,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:53" (1/1) ... [2020-07-20 03:38:53,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:53" (1/1) ... [2020-07-20 03:38:53,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:53" (1/1) ... [2020-07-20 03:38:53,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:53" (1/1) ... [2020-07-20 03:38:53,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:53" (1/1) ... [2020-07-20 03:38:53,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:53" (1/1) ... [2020-07-20 03:38:53,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 03:38:53,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 03:38:53,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 03:38:53,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 03:38:53,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:38:53,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 03:38:53,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 03:38:53,716 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 03:38:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-20 03:38:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-20 03:38:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-20 03:38:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-20 03:38:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-20 03:38:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-20 03:38:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-20 03:38:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-20 03:38:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-20 03:38:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-20 03:38:53,718 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-20 03:38:53,718 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-20 03:38:53,723 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-20 03:38:53,723 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-20 03:38:53,723 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-20 03:38:53,724 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-20 03:38:53,724 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-20 03:38:53,725 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-20 03:38:53,725 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-20 03:38:53,725 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-20 03:38:53,725 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-20 03:38:53,725 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-20 03:38:53,726 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-20 03:38:53,726 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-20 03:38:53,726 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-20 03:38:53,726 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-20 03:38:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-20 03:38:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-20 03:38:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-20 03:38:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-20 03:38:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-20 03:38:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-20 03:38:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-20 03:38:53,728 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-20 03:38:53,728 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-20 03:38:53,728 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-20 03:38:53,728 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-20 03:38:53,728 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-20 03:38:53,728 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-20 03:38:53,728 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-20 03:38:53,729 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-20 03:38:53,729 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-20 03:38:53,729 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-20 03:38:53,729 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-20 03:38:53,729 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-20 03:38:53,729 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-20 03:38:53,729 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-20 03:38:53,730 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-20 03:38:53,730 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-20 03:38:53,730 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-20 03:38:53,730 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 03:38:53,730 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 03:38:53,730 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 03:38:53,730 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 03:38:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 03:38:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-20 03:38:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 03:38:53,732 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-20 03:38:53,732 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-20 03:38:53,732 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 03:38:53,732 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-20 03:38:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-20 03:38:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-20 03:38:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 03:38:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-20 03:38:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-20 03:38:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-20 03:38:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-20 03:38:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-20 03:38:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-20 03:38:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-20 03:38:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-20 03:38:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-20 03:38:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-20 03:38:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-20 03:38:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-20 03:38:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-20 03:38:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-20 03:38:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-20 03:38:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-20 03:38:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-20 03:38:53,739 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-20 03:38:53,739 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-20 03:38:53,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-20 03:38:53,740 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-20 03:38:53,740 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-20 03:38:53,740 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-20 03:38:53,740 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-20 03:38:53,740 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-20 03:38:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-20 03:38:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-20 03:38:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-20 03:38:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-20 03:38:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-20 03:38:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-20 03:38:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-20 03:38:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-20 03:38:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-20 03:38:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-20 03:38:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-20 03:38:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-20 03:38:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-20 03:38:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-20 03:38:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 03:38:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 03:38:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 03:38:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 03:38:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 03:38:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 03:38:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 03:38:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 03:38:53,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 03:38:54,395 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 03:38:54,396 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-07-20 03:38:54,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:38:54 BoogieIcfgContainer [2020-07-20 03:38:54,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 03:38:54,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 03:38:54,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 03:38:54,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 03:38:54,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:38:52" (1/3) ... [2020-07-20 03:38:54,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651a7f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:38:54, skipping insertion in model container [2020-07-20 03:38:54,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:53" (2/3) ... [2020-07-20 03:38:54,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651a7f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:38:54, skipping insertion in model container [2020-07-20 03:38:54,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:38:54" (3/3) ... [2020-07-20 03:38:54,410 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-07-20 03:38:54,422 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 03:38:54,431 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-07-20 03:38:54,448 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-07-20 03:38:54,476 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 03:38:54,476 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 03:38:54,476 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 03:38:54,476 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 03:38:54,478 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 03:38:54,478 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 03:38:54,478 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 03:38:54,478 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 03:38:54,504 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-07-20 03:38:54,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-20 03:38:54,511 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:54,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:54,514 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:54,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:54,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1861454184, now seen corresponding path program 1 times [2020-07-20 03:38:54,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:54,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903048425] [2020-07-20 03:38:54,535 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e2b1f36 [2020-07-20 03:38:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:54,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:54,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903048425] [2020-07-20 03:38:54,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:38:54,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 03:38:54,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703106246] [2020-07-20 03:38:54,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 03:38:54,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:54,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 03:38:54,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 03:38:54,845 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-07-20 03:38:55,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:55,118 INFO L93 Difference]: Finished difference Result 186 states and 302 transitions. [2020-07-20 03:38:55,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 03:38:55,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-07-20 03:38:55,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:55,133 INFO L225 Difference]: With dead ends: 186 [2020-07-20 03:38:55,133 INFO L226 Difference]: Without dead ends: 99 [2020-07-20 03:38:55,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 03:38:55,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-07-20 03:38:55,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 81. [2020-07-20 03:38:55,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-20 03:38:55,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-07-20 03:38:55,188 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 8 [2020-07-20 03:38:55,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:55,189 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-07-20 03:38:55,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 03:38:55,189 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-07-20 03:38:55,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 03:38:55,190 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:55,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:55,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 03:38:55,191 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:55,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:55,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1461031906, now seen corresponding path program 1 times [2020-07-20 03:38:55,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:55,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290540251] [2020-07-20 03:38:55,193 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e2b1f36 [2020-07-20 03:38:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:55,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:55,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290540251] [2020-07-20 03:38:55,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:38:55,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 03:38:55,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837221943] [2020-07-20 03:38:55,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 03:38:55,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:55,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 03:38:55,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 03:38:55,298 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 4 states. [2020-07-20 03:38:55,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:55,515 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-07-20 03:38:55,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 03:38:55,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-07-20 03:38:55,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:55,517 INFO L225 Difference]: With dead ends: 84 [2020-07-20 03:38:55,518 INFO L226 Difference]: Without dead ends: 82 [2020-07-20 03:38:55,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 03:38:55,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-20 03:38:55,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-07-20 03:38:55,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-07-20 03:38:55,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-07-20 03:38:55,546 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 14 [2020-07-20 03:38:55,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:55,547 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-07-20 03:38:55,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 03:38:55,547 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-07-20 03:38:55,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 03:38:55,548 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:55,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:55,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 03:38:55,549 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:55,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:55,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1461033828, now seen corresponding path program 1 times [2020-07-20 03:38:55,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:55,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821164422] [2020-07-20 03:38:55,550 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e2b1f36 [2020-07-20 03:38:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:55,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:55,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821164422] [2020-07-20 03:38:55,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:38:55,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 03:38:55,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885365247] [2020-07-20 03:38:55,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 03:38:55,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:55,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 03:38:55,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 03:38:55,692 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 5 states. [2020-07-20 03:38:55,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:55,985 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2020-07-20 03:38:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 03:38:55,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-20 03:38:55,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:55,988 INFO L225 Difference]: With dead ends: 138 [2020-07-20 03:38:55,988 INFO L226 Difference]: Without dead ends: 136 [2020-07-20 03:38:55,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 03:38:55,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-07-20 03:38:56,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 84. [2020-07-20 03:38:56,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-07-20 03:38:56,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2020-07-20 03:38:56,008 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 14 [2020-07-20 03:38:56,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:56,008 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2020-07-20 03:38:56,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 03:38:56,009 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2020-07-20 03:38:56,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 03:38:56,010 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:56,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:56,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 03:38:56,013 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:56,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:56,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1462880870, now seen corresponding path program 1 times [2020-07-20 03:38:56,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:56,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975292805] [2020-07-20 03:38:56,015 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e2b1f36 [2020-07-20 03:38:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:56,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:56,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975292805] [2020-07-20 03:38:56,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:38:56,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 03:38:56,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905435968] [2020-07-20 03:38:56,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 03:38:56,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:56,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 03:38:56,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 03:38:56,114 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand 5 states. [2020-07-20 03:38:56,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:56,280 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-07-20 03:38:56,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 03:38:56,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-20 03:38:56,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:56,281 INFO L225 Difference]: With dead ends: 84 [2020-07-20 03:38:56,282 INFO L226 Difference]: Without dead ends: 82 [2020-07-20 03:38:56,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 03:38:56,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-20 03:38:56,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-07-20 03:38:56,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-20 03:38:56,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2020-07-20 03:38:56,291 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 14 [2020-07-20 03:38:56,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:56,291 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2020-07-20 03:38:56,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 03:38:56,291 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2020-07-20 03:38:56,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 03:38:56,292 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:56,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:56,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 03:38:56,293 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:56,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:56,293 INFO L82 PathProgramCache]: Analyzing trace with hash 177734485, now seen corresponding path program 1 times [2020-07-20 03:38:56,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:56,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946287412] [2020-07-20 03:38:56,294 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e2b1f36 [2020-07-20 03:38:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:56,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:56,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946287412] [2020-07-20 03:38:56,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:38:56,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 03:38:56,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630898435] [2020-07-20 03:38:56,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 03:38:56,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:56,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 03:38:56,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 03:38:56,352 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand 5 states. [2020-07-20 03:38:56,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:56,569 INFO L93 Difference]: Finished difference Result 199 states and 221 transitions. [2020-07-20 03:38:56,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 03:38:56,570 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-07-20 03:38:56,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:56,571 INFO L225 Difference]: With dead ends: 199 [2020-07-20 03:38:56,572 INFO L226 Difference]: Without dead ends: 132 [2020-07-20 03:38:56,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 03:38:56,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-07-20 03:38:56,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 81. [2020-07-20 03:38:56,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-20 03:38:56,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-07-20 03:38:56,592 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 19 [2020-07-20 03:38:56,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:56,592 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-07-20 03:38:56,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 03:38:56,593 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-07-20 03:38:56,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 03:38:56,593 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:56,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:56,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 03:38:56,594 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:56,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:56,594 INFO L82 PathProgramCache]: Analyzing trace with hash -631612141, now seen corresponding path program 1 times [2020-07-20 03:38:56,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:56,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211371785] [2020-07-20 03:38:56,595 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e2b1f36 [2020-07-20 03:38:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:56,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211371785] [2020-07-20 03:38:56,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:38:56,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 03:38:56,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366803033] [2020-07-20 03:38:56,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 03:38:56,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:56,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 03:38:56,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 03:38:56,726 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 6 states. [2020-07-20 03:38:56,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:56,958 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2020-07-20 03:38:56,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 03:38:56,966 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-07-20 03:38:56,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:56,967 INFO L225 Difference]: With dead ends: 126 [2020-07-20 03:38:56,967 INFO L226 Difference]: Without dead ends: 122 [2020-07-20 03:38:56,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-20 03:38:56,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-20 03:38:56,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 77. [2020-07-20 03:38:56,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-20 03:38:56,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2020-07-20 03:38:56,987 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 19 [2020-07-20 03:38:56,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:56,988 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2020-07-20 03:38:56,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 03:38:56,988 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2020-07-20 03:38:56,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 03:38:56,990 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:56,991 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] [2020-07-20 03:38:56,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 03:38:56,991 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:56,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:56,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1894864309, now seen corresponding path program 1 times [2020-07-20 03:38:56,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:56,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287000287] [2020-07-20 03:38:56,992 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e2b1f36 [2020-07-20 03:38:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:57,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:57,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287000287] [2020-07-20 03:38:57,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:38:57,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 03:38:57,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338878999] [2020-07-20 03:38:57,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 03:38:57,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:57,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 03:38:57,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 03:38:57,088 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 5 states. [2020-07-20 03:38:57,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:57,272 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2020-07-20 03:38:57,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 03:38:57,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-07-20 03:38:57,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:57,274 INFO L225 Difference]: With dead ends: 136 [2020-07-20 03:38:57,274 INFO L226 Difference]: Without dead ends: 116 [2020-07-20 03:38:57,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 03:38:57,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-07-20 03:38:57,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 76. [2020-07-20 03:38:57,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-20 03:38:57,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2020-07-20 03:38:57,282 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 20 [2020-07-20 03:38:57,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:57,282 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2020-07-20 03:38:57,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 03:38:57,282 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2020-07-20 03:38:57,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 03:38:57,283 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:57,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:57,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 03:38:57,284 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:57,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:57,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1337316768, now seen corresponding path program 1 times [2020-07-20 03:38:57,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:57,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063858348] [2020-07-20 03:38:57,285 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e2b1f36 [2020-07-20 03:38:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:57,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:57,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063858348] [2020-07-20 03:38:57,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:38:57,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 03:38:57,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166409526] [2020-07-20 03:38:57,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 03:38:57,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:57,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 03:38:57,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 03:38:57,327 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 4 states. [2020-07-20 03:38:57,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:57,447 INFO L93 Difference]: Finished difference Result 141 states and 159 transitions. [2020-07-20 03:38:57,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 03:38:57,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-20 03:38:57,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:57,449 INFO L225 Difference]: With dead ends: 141 [2020-07-20 03:38:57,449 INFO L226 Difference]: Without dead ends: 100 [2020-07-20 03:38:57,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 03:38:57,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-07-20 03:38:57,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 79. [2020-07-20 03:38:57,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-20 03:38:57,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2020-07-20 03:38:57,456 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 24 [2020-07-20 03:38:57,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:57,457 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2020-07-20 03:38:57,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 03:38:57,457 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2020-07-20 03:38:57,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 03:38:57,458 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:57,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:57,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-20 03:38:57,459 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:57,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:57,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1492857654, now seen corresponding path program 1 times [2020-07-20 03:38:57,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:57,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695441735] [2020-07-20 03:38:57,460 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e2b1f36 [2020-07-20 03:38:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:57,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:57,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695441735] [2020-07-20 03:38:57,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:38:57,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 03:38:57,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987924856] [2020-07-20 03:38:57,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 03:38:57,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:57,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 03:38:57,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 03:38:57,503 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand 4 states. [2020-07-20 03:38:57,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:57,643 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2020-07-20 03:38:57,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 03:38:57,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-07-20 03:38:57,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:57,645 INFO L225 Difference]: With dead ends: 79 [2020-07-20 03:38:57,645 INFO L226 Difference]: Without dead ends: 77 [2020-07-20 03:38:57,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 03:38:57,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-07-20 03:38:57,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-07-20 03:38:57,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-20 03:38:57,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2020-07-20 03:38:57,660 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 25 [2020-07-20 03:38:57,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:57,662 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2020-07-20 03:38:57,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 03:38:57,662 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2020-07-20 03:38:57,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 03:38:57,664 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:57,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:57,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-20 03:38:57,665 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:57,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:57,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1632693981, now seen corresponding path program 1 times [2020-07-20 03:38:57,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:57,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213653879] [2020-07-20 03:38:57,666 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e2b1f36 [2020-07-20 03:38:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:57,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:57,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213653879] [2020-07-20 03:38:57,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:38:57,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 03:38:57,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676020860] [2020-07-20 03:38:57,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 03:38:57,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:57,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 03:38:57,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 03:38:57,720 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand 5 states. [2020-07-20 03:38:57,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:57,870 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2020-07-20 03:38:57,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 03:38:57,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-20 03:38:57,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:57,872 INFO L225 Difference]: With dead ends: 78 [2020-07-20 03:38:57,872 INFO L226 Difference]: Without dead ends: 76 [2020-07-20 03:38:57,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 03:38:57,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-20 03:38:57,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-07-20 03:38:57,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-20 03:38:57,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-07-20 03:38:57,877 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 27 [2020-07-20 03:38:57,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:57,878 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-07-20 03:38:57,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 03:38:57,878 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-07-20 03:38:57,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 03:38:57,879 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:57,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:57,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-20 03:38:57,879 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:57,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:57,880 INFO L82 PathProgramCache]: Analyzing trace with hash 668074133, now seen corresponding path program 1 times [2020-07-20 03:38:57,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:57,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849882674] [2020-07-20 03:38:57,881 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e2b1f36 [2020-07-20 03:38:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:57,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:57,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849882674] [2020-07-20 03:38:57,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:38:57,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 03:38:57,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290684645] [2020-07-20 03:38:57,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 03:38:57,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:57,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 03:38:57,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 03:38:57,948 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 6 states. [2020-07-20 03:38:58,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:58,261 INFO L93 Difference]: Finished difference Result 179 states and 203 transitions. [2020-07-20 03:38:58,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 03:38:58,262 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-07-20 03:38:58,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:58,263 INFO L225 Difference]: With dead ends: 179 [2020-07-20 03:38:58,263 INFO L226 Difference]: Without dead ends: 137 [2020-07-20 03:38:58,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-07-20 03:38:58,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-07-20 03:38:58,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 85. [2020-07-20 03:38:58,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-07-20 03:38:58,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-07-20 03:38:58,273 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 28 [2020-07-20 03:38:58,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:58,274 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-07-20 03:38:58,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 03:38:58,274 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-07-20 03:38:58,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 03:38:58,278 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:58,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:58,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-20 03:38:58,278 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:58,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:58,279 INFO L82 PathProgramCache]: Analyzing trace with hash 567478293, now seen corresponding path program 1 times [2020-07-20 03:38:58,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:58,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111611518] [2020-07-20 03:38:58,280 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e2b1f36 [2020-07-20 03:38:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:58,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:58,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111611518] [2020-07-20 03:38:58,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:38:58,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 03:38:58,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975673589] [2020-07-20 03:38:58,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 03:38:58,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:58,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 03:38:58,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-20 03:38:58,468 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 8 states. [2020-07-20 03:38:59,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:59,127 INFO L93 Difference]: Finished difference Result 228 states and 252 transitions. [2020-07-20 03:38:59,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 03:38:59,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-07-20 03:38:59,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:59,134 INFO L225 Difference]: With dead ends: 228 [2020-07-20 03:38:59,134 INFO L226 Difference]: Without dead ends: 226 [2020-07-20 03:38:59,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-07-20 03:38:59,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-07-20 03:38:59,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 97. [2020-07-20 03:38:59,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-07-20 03:38:59,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2020-07-20 03:38:59,144 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 28 [2020-07-20 03:38:59,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:59,144 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2020-07-20 03:38:59,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 03:38:59,145 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2020-07-20 03:38:59,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 03:38:59,146 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:59,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:59,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-20 03:38:59,146 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:59,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:59,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1429819819, now seen corresponding path program 1 times [2020-07-20 03:38:59,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:59,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461125822] [2020-07-20 03:38:59,147 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e2b1f36 [2020-07-20 03:38:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:59,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 03:38:59,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461125822] [2020-07-20 03:38:59,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:38:59,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 03:38:59,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892054478] [2020-07-20 03:38:59,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 03:38:59,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:59,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 03:38:59,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 03:38:59,211 INFO L87 Difference]: Start difference. First operand 97 states and 110 transitions. Second operand 5 states. [2020-07-20 03:38:59,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:59,416 INFO L93 Difference]: Finished difference Result 143 states and 162 transitions. [2020-07-20 03:38:59,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 03:38:59,417 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-20 03:38:59,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:59,419 INFO L225 Difference]: With dead ends: 143 [2020-07-20 03:38:59,419 INFO L226 Difference]: Without dead ends: 125 [2020-07-20 03:38:59,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 03:38:59,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-07-20 03:38:59,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2020-07-20 03:38:59,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-07-20 03:38:59,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 137 transitions. [2020-07-20 03:38:59,429 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 137 transitions. Word has length 30 [2020-07-20 03:38:59,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:59,430 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 137 transitions. [2020-07-20 03:38:59,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 03:38:59,430 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 137 transitions. [2020-07-20 03:38:59,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 03:38:59,438 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:59,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:59,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-20 03:38:59,439 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:59,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:59,440 INFO L82 PathProgramCache]: Analyzing trace with hash -753501909, now seen corresponding path program 1 times [2020-07-20 03:38:59,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:59,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19009124] [2020-07-20 03:38:59,447 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e2b1f36 [2020-07-20 03:38:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 03:38:59,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19009124] [2020-07-20 03:38:59,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:38:59,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 03:38:59,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774173006] [2020-07-20 03:38:59,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 03:38:59,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:59,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 03:38:59,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 03:38:59,522 INFO L87 Difference]: Start difference. First operand 117 states and 137 transitions. Second operand 4 states. [2020-07-20 03:38:59,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:59,678 INFO L93 Difference]: Finished difference Result 117 states and 137 transitions. [2020-07-20 03:38:59,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 03:38:59,679 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-07-20 03:38:59,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:59,680 INFO L225 Difference]: With dead ends: 117 [2020-07-20 03:38:59,680 INFO L226 Difference]: Without dead ends: 115 [2020-07-20 03:38:59,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 03:38:59,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-07-20 03:38:59,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-07-20 03:38:59,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-07-20 03:38:59,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2020-07-20 03:38:59,689 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 30 [2020-07-20 03:38:59,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:59,689 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2020-07-20 03:38:59,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 03:38:59,689 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2020-07-20 03:38:59,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 03:38:59,692 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:59,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:59,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-20 03:38:59,692 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:59,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:59,693 INFO L82 PathProgramCache]: Analyzing trace with hash 758661948, now seen corresponding path program 1 times [2020-07-20 03:38:59,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:59,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974089722] [2020-07-20 03:38:59,693 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e2b1f36 [2020-07-20 03:38:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:38:59,715 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:38:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:38:59,730 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:38:59,772 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 03:38:59,773 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 03:38:59,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-20 03:38:59,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 03:38:59 BoogieIcfgContainer [2020-07-20 03:38:59,817 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 03:38:59,820 INFO L168 Benchmark]: Toolchain (without parser) took 6893.31 ms. Allocated memory was 136.3 MB in the beginning and 299.4 MB in the end (delta: 163.1 MB). Free memory was 97.9 MB in the beginning and 119.6 MB in the end (delta: -21.8 MB). Peak memory consumption was 141.3 MB. Max. memory is 7.1 GB. [2020-07-20 03:38:59,821 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 136.3 MB. Free memory is still 117.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 03:38:59,822 INFO L168 Benchmark]: CACSL2BoogieTranslator took 648.16 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 97.4 MB in the beginning and 167.0 MB in the end (delta: -69.6 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-07-20 03:38:59,822 INFO L168 Benchmark]: Boogie Preprocessor took 77.53 ms. Allocated memory is still 200.3 MB. Free memory was 167.0 MB in the beginning and 163.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-07-20 03:38:59,823 INFO L168 Benchmark]: RCFGBuilder took 746.05 ms. Allocated memory is still 200.3 MB. Free memory was 163.0 MB in the beginning and 107.4 MB in the end (delta: 55.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. [2020-07-20 03:38:59,824 INFO L168 Benchmark]: TraceAbstraction took 5415.19 ms. Allocated memory was 200.3 MB in the beginning and 299.4 MB in the end (delta: 99.1 MB). Free memory was 107.4 MB in the beginning and 119.6 MB in the end (delta: -12.2 MB). Peak memory consumption was 86.9 MB. Max. memory is 7.1 GB. [2020-07-20 03:38:59,827 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 136.3 MB. Free memory is still 117.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 648.16 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 97.4 MB in the beginning and 167.0 MB in the end (delta: -69.6 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.53 ms. Allocated memory is still 200.3 MB. Free memory was 167.0 MB in the beginning and 163.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 746.05 ms. Allocated memory is still 200.3 MB. Free memory was 163.0 MB in the beginning and 107.4 MB in the end (delta: 55.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5415.19 ms. Allocated memory was 200.3 MB in the beginning and 299.4 MB in the end (delta: 99.1 MB). Free memory was 107.4 MB in the beginning and 119.6 MB in the end (delta: -12.2 MB). Peak memory consumption was 86.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1029]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* list = malloc(sizeof(SLL)); [L993] list->next = ((void*)0) [L994] list->prev = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L995] COND FALSE !(!(list != ((void*)0))) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L995] COND FALSE !(__VERIFIER_nondet_int()) [L995] list->inner = malloc(sizeof(SLL)) [L995] EXPR list->inner [L995] list->inner->next = ((void*)0) [L995] EXPR list->inner [L995] list->inner->inner = ((void*)0) [L995] EXPR list->inner [L995] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, list->inner != ((void*)0) || list->inner == ((void*)0)=1, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L995] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L997] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1011] end = ((void*)0) [L1012] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1015] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1017] COND TRUE ((void*)0) != end [L1019] int len = 0; [L1020] EXPR end->inner [L1020] SLL* inner = end->inner; [L1021] COND TRUE ((void*)0) != inner VAL [end={-1:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1023] COND TRUE len == 0 [L1024] len = 1 VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1027] COND FALSE !(!(((void*)0) != inner)) VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1028] EXPR inner->inner VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1028] COND FALSE !(!(((void*)0) == inner->inner)) [L1029] EXPR inner->next VAL [end={-1:0}, inner={-2:0}, inner->next={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1029] COND TRUE !(((void*)0) != inner->next) [L1029] __VERIFIER_error() VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 88 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.3s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1050 SDtfs, 927 SDslu, 1484 SDs, 0 SdLazy, 1936 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 420 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 331 NumberOfCodeBlocks, 331 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 286 ConstructedInterpolants, 0 QuantifiedInterpolants, 42885 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 2/2 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...