/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.trace.refinement.strategy CAMEL_NO_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 [2020-07-19 21:32:24,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:32:24,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:32:24,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:32:24,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:32:24,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:32:24,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:32:24,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:32:24,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:32:24,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:32:24,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:32:24,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:32:24,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:32:24,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:32:24,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:32:24,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:32:24,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:32:24,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:32:24,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:32:24,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:32:24,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:32:24,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:32:24,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:32:24,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:32:24,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-19 21:32:24,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-19 21:32:24,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-19 21:32:24,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-19 21:32:24,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-19 21:32:24,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-19 21:32:24,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 21:32:24,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 21:32:24,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 21:32:24,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 21:32:24,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 21:32:24,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 21:32:24,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 21:32:24,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 21:32:24,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:32:24,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:32:24,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:32:24,166 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 [2020-07-19 21:32:24,202 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:32:24,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:32:24,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:32:24,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:32:24,207 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:32:24,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:32:24,207 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:32:24,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:32:24,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:32:24,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:32:24,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:32:24,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:32:24,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:32:24,209 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:32:24,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:32:24,209 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:32:24,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:32:24,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:32:24,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:32:24,210 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:32:24,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:32:24,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:32:24,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:32:24,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:32:24,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:32:24,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:32:24,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:32:24,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:32:24,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:32:24,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:32:24,542 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:32:24,555 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:32:24,559 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:32:24,560 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:32:24,561 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:32:24,561 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-07-19 21:32:24,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/692463896/381e9266719b4579ac296ff48084d54f/FLAG7d481af8f [2020-07-19 21:32:25,216 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:32:25,217 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-07-19 21:32:25,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/692463896/381e9266719b4579ac296ff48084d54f/FLAG7d481af8f [2020-07-19 21:32:25,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/692463896/381e9266719b4579ac296ff48084d54f [2020-07-19 21:32:25,498 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:32:25,502 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:32:25,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:32:25,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:32:25,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:32:25,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:32:25" (1/1) ... [2020-07-19 21:32:25,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f1f3dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:25, skipping insertion in model container [2020-07-19 21:32:25,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:32:25" (1/1) ... [2020-07-19 21:32:25,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:32:25,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:32:26,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:32:26,027 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:32:26,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:32:26,138 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:32:26,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:26 WrapperNode [2020-07-19 21:32:26,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:32:26,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:32:26,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:32:26,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:32:26,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:26" (1/1) ... [2020-07-19 21:32:26,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:26" (1/1) ... [2020-07-19 21:32:26,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:26" (1/1) ... [2020-07-19 21:32:26,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:26" (1/1) ... [2020-07-19 21:32:26,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:26" (1/1) ... [2020-07-19 21:32:26,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:26" (1/1) ... [2020-07-19 21:32:26,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:26" (1/1) ... [2020-07-19 21:32:26,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:32:26,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:32:26,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:32:26,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:32:26,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:32:26,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:32:26,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:32:26,308 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:32:26,308 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-19 21:32:26,308 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-19 21:32:26,308 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-19 21:32:26,309 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-19 21:32:26,309 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-19 21:32:26,309 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-19 21:32:26,309 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-19 21:32:26,309 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-19 21:32:26,309 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-19 21:32:26,310 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-19 21:32:26,310 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-19 21:32:26,310 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-19 21:32:26,310 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-19 21:32:26,310 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-19 21:32:26,311 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-19 21:32:26,311 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-19 21:32:26,311 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-19 21:32:26,311 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-19 21:32:26,311 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-19 21:32:26,311 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-19 21:32:26,312 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-19 21:32:26,312 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-19 21:32:26,312 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-19 21:32:26,312 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-19 21:32:26,312 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-19 21:32:26,312 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-19 21:32:26,313 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-19 21:32:26,313 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-19 21:32:26,313 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-19 21:32:26,313 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-19 21:32:26,313 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-19 21:32:26,313 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-19 21:32:26,314 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-19 21:32:26,314 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-19 21:32:26,314 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-19 21:32:26,314 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-19 21:32:26,314 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-19 21:32:26,314 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-19 21:32:26,315 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-19 21:32:26,315 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-19 21:32:26,315 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-19 21:32:26,315 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-19 21:32:26,315 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-19 21:32:26,315 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-19 21:32:26,316 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-19 21:32:26,316 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-19 21:32:26,316 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-19 21:32:26,316 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-19 21:32:26,316 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-19 21:32:26,316 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-19 21:32:26,317 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 21:32:26,317 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-19 21:32:26,317 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-19 21:32:26,317 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-19 21:32:26,317 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-19 21:32:26,317 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-19 21:32:26,317 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-19 21:32:26,318 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-19 21:32:26,318 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-19 21:32:26,318 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 21:32:26,318 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-19 21:32:26,318 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-19 21:32:26,319 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-19 21:32:26,319 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-19 21:32:26,319 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-19 21:32:26,319 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-19 21:32:26,319 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-19 21:32:26,319 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-19 21:32:26,319 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-19 21:32:26,320 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-19 21:32:26,320 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-19 21:32:26,320 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-19 21:32:26,320 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-19 21:32:26,320 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-19 21:32:26,320 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-19 21:32:26,321 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-19 21:32:26,321 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-19 21:32:26,321 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-19 21:32:26,321 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-19 21:32:26,321 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-19 21:32:26,321 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-19 21:32:26,322 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-19 21:32:26,322 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-19 21:32:26,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-19 21:32:26,322 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-19 21:32:26,322 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-19 21:32:26,322 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-19 21:32:26,322 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-19 21:32:26,323 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-19 21:32:26,323 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-19 21:32:26,323 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-19 21:32:26,323 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-19 21:32:26,323 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-19 21:32:26,323 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-19 21:32:26,324 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-19 21:32:26,324 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-19 21:32:26,324 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-19 21:32:26,324 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-19 21:32:26,324 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-19 21:32:26,324 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-19 21:32:26,324 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-19 21:32:26,325 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-19 21:32:26,325 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-19 21:32:26,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 21:32:26,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:32:26,325 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:32:26,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 21:32:26,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-19 21:32:26,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-19 21:32:26,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 21:32:26,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:32:26,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:32:26,997 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:32:26,997 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-07-19 21:32:27,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:32:27 BoogieIcfgContainer [2020-07-19 21:32:27,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:32:27,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:32:27,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:32:27,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:32:27,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:32:25" (1/3) ... [2020-07-19 21:32:27,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41edca80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:32:27, skipping insertion in model container [2020-07-19 21:32:27,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:32:26" (2/3) ... [2020-07-19 21:32:27,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41edca80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:32:27, skipping insertion in model container [2020-07-19 21:32:27,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:32:27" (3/3) ... [2020-07-19 21:32:27,023 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-07-19 21:32:27,034 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:32:27,042 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-07-19 21:32:27,053 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-07-19 21:32:27,080 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:32:27,080 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:32:27,080 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:32:27,081 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:32:27,081 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:32:27,081 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:32:27,082 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:32:27,082 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:32:27,107 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-07-19 21:32:27,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-19 21:32:27,114 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:32:27,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:32:27,116 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]=== [2020-07-19 21:32:27,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:32:27,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1861454184, now seen corresponding path program 1 times [2020-07-19 21:32:27,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:32:27,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779952183] [2020-07-19 21:32:27,134 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3f7cec9 [2020-07-19 21:32:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:27,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:32:27,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779952183] [2020-07-19 21:32:27,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:32:27,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:32:27,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778294122] [2020-07-19 21:32:27,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:32:27,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:32:27,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:32:27,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:32:27,362 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-07-19 21:32:27,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:32:27,660 INFO L93 Difference]: Finished difference Result 186 states and 302 transitions. [2020-07-19 21:32:27,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:32:27,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-07-19 21:32:27,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:32:27,674 INFO L225 Difference]: With dead ends: 186 [2020-07-19 21:32:27,675 INFO L226 Difference]: Without dead ends: 99 [2020-07-19 21:32:27,680 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 [2020-07-19 21:32:27,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-07-19 21:32:27,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 81. [2020-07-19 21:32:27,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-19 21:32:27,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-07-19 21:32:27,732 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 8 [2020-07-19 21:32:27,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:32:27,733 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-07-19 21:32:27,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:32:27,733 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-07-19 21:32:27,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-19 21:32:27,734 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:32:27,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:32:27,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:32:27,735 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]=== [2020-07-19 21:32:27,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:32:27,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1461031906, now seen corresponding path program 1 times [2020-07-19 21:32:27,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:32:27,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582638220] [2020-07-19 21:32:27,736 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3f7cec9 [2020-07-19 21:32:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:27,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:32:27,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582638220] [2020-07-19 21:32:27,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:32:27,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:32:27,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168369790] [2020-07-19 21:32:27,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:32:27,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:32:27,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:32:27,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:32:27,837 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 4 states. [2020-07-19 21:32:28,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:32:28,033 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-07-19 21:32:28,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:32:28,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-07-19 21:32:28,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:32:28,036 INFO L225 Difference]: With dead ends: 84 [2020-07-19 21:32:28,036 INFO L226 Difference]: Without dead ends: 82 [2020-07-19 21:32:28,037 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 [2020-07-19 21:32:28,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-19 21:32:28,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-07-19 21:32:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-07-19 21:32:28,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-07-19 21:32:28,049 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 14 [2020-07-19 21:32:28,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:32:28,050 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-07-19 21:32:28,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:32:28,050 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-07-19 21:32:28,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-19 21:32:28,051 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:32:28,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:32:28,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 21:32:28,051 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]=== [2020-07-19 21:32:28,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:32:28,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1461033828, now seen corresponding path program 1 times [2020-07-19 21:32:28,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:32:28,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021449735] [2020-07-19 21:32:28,053 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3f7cec9 [2020-07-19 21:32:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:28,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:28,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:32:28,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021449735] [2020-07-19 21:32:28,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:32:28,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 21:32:28,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780662690] [2020-07-19 21:32:28,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 21:32:28,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:32:28,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 21:32:28,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:32:28,126 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 5 states. [2020-07-19 21:32:28,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:32:28,376 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2020-07-19 21:32:28,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 21:32:28,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-19 21:32:28,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:32:28,379 INFO L225 Difference]: With dead ends: 138 [2020-07-19 21:32:28,379 INFO L226 Difference]: Without dead ends: 136 [2020-07-19 21:32:28,380 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 [2020-07-19 21:32:28,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-07-19 21:32:28,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 84. [2020-07-19 21:32:28,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-07-19 21:32:28,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2020-07-19 21:32:28,391 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 14 [2020-07-19 21:32:28,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:32:28,391 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2020-07-19 21:32:28,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 21:32:28,392 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2020-07-19 21:32:28,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-19 21:32:28,392 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:32:28,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:32:28,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 21:32:28,393 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]=== [2020-07-19 21:32:28,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:32:28,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1462880870, now seen corresponding path program 1 times [2020-07-19 21:32:28,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:32:28,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831595307] [2020-07-19 21:32:28,394 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3f7cec9 [2020-07-19 21:32:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:32:28,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831595307] [2020-07-19 21:32:28,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:32:28,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 21:32:28,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718210486] [2020-07-19 21:32:28,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 21:32:28,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:32:28,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 21:32:28,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:32:28,469 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand 5 states. [2020-07-19 21:32:28,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:32:28,656 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-07-19 21:32:28,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 21:32:28,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-19 21:32:28,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:32:28,658 INFO L225 Difference]: With dead ends: 84 [2020-07-19 21:32:28,658 INFO L226 Difference]: Without dead ends: 82 [2020-07-19 21:32:28,659 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 [2020-07-19 21:32:28,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-19 21:32:28,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-07-19 21:32:28,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-19 21:32:28,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2020-07-19 21:32:28,668 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 14 [2020-07-19 21:32:28,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:32:28,668 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2020-07-19 21:32:28,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 21:32:28,669 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2020-07-19 21:32:28,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-19 21:32:28,670 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:32:28,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:32:28,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-19 21:32:28,670 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]=== [2020-07-19 21:32:28,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:32:28,671 INFO L82 PathProgramCache]: Analyzing trace with hash 177734485, now seen corresponding path program 1 times [2020-07-19 21:32:28,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:32:28,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794506834] [2020-07-19 21:32:28,672 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3f7cec9 [2020-07-19 21:32:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:28,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:32:28,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794506834] [2020-07-19 21:32:28,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:32:28,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 21:32:28,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327182321] [2020-07-19 21:32:28,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 21:32:28,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:32:28,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 21:32:28,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:32:28,757 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand 5 states. [2020-07-19 21:32:28,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:32:28,997 INFO L93 Difference]: Finished difference Result 199 states and 221 transitions. [2020-07-19 21:32:28,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 21:32:28,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-07-19 21:32:28,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:32:28,999 INFO L225 Difference]: With dead ends: 199 [2020-07-19 21:32:28,999 INFO L226 Difference]: Without dead ends: 132 [2020-07-19 21:32:29,002 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 [2020-07-19 21:32:29,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-07-19 21:32:29,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 81. [2020-07-19 21:32:29,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-19 21:32:29,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-07-19 21:32:29,021 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 19 [2020-07-19 21:32:29,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:32:29,021 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-07-19 21:32:29,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 21:32:29,021 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-07-19 21:32:29,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-19 21:32:29,022 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:32:29,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:32:29,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-19 21:32:29,023 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]=== [2020-07-19 21:32:29,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:32:29,023 INFO L82 PathProgramCache]: Analyzing trace with hash -631612141, now seen corresponding path program 1 times [2020-07-19 21:32:29,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:32:29,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053622815] [2020-07-19 21:32:29,024 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3f7cec9 [2020-07-19 21:32:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:29,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:32:29,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053622815] [2020-07-19 21:32:29,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:32:29,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 21:32:29,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565083056] [2020-07-19 21:32:29,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 21:32:29,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:32:29,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 21:32:29,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-19 21:32:29,169 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 6 states. [2020-07-19 21:32:29,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:32:29,402 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2020-07-19 21:32:29,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 21:32:29,402 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-07-19 21:32:29,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:32:29,404 INFO L225 Difference]: With dead ends: 126 [2020-07-19 21:32:29,404 INFO L226 Difference]: Without dead ends: 122 [2020-07-19 21:32:29,405 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 [2020-07-19 21:32:29,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-19 21:32:29,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 77. [2020-07-19 21:32:29,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-19 21:32:29,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2020-07-19 21:32:29,422 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 19 [2020-07-19 21:32:29,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:32:29,425 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2020-07-19 21:32:29,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 21:32:29,425 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2020-07-19 21:32:29,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-19 21:32:29,426 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:32:29,426 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] [2020-07-19 21:32:29,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-19 21:32:29,427 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]=== [2020-07-19 21:32:29,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:32:29,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1894864309, now seen corresponding path program 1 times [2020-07-19 21:32:29,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:32:29,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549919315] [2020-07-19 21:32:29,429 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3f7cec9 [2020-07-19 21:32:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:29,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:32:29,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549919315] [2020-07-19 21:32:29,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:32:29,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 21:32:29,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095982286] [2020-07-19 21:32:29,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 21:32:29,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:32:29,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 21:32:29,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:32:29,531 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 5 states. [2020-07-19 21:32:29,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:32:29,747 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2020-07-19 21:32:29,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 21:32:29,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-07-19 21:32:29,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:32:29,750 INFO L225 Difference]: With dead ends: 136 [2020-07-19 21:32:29,750 INFO L226 Difference]: Without dead ends: 116 [2020-07-19 21:32:29,750 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 [2020-07-19 21:32:29,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-07-19 21:32:29,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 76. [2020-07-19 21:32:29,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-19 21:32:29,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2020-07-19 21:32:29,765 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 20 [2020-07-19 21:32:29,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:32:29,765 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2020-07-19 21:32:29,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 21:32:29,765 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2020-07-19 21:32:29,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-19 21:32:29,766 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:32:29,766 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] [2020-07-19 21:32:29,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-19 21:32:29,767 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]=== [2020-07-19 21:32:29,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:32:29,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1337316768, now seen corresponding path program 1 times [2020-07-19 21:32:29,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:32:29,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205936518] [2020-07-19 21:32:29,768 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3f7cec9 [2020-07-19 21:32:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:29,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:32:29,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205936518] [2020-07-19 21:32:29,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:32:29,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:32:29,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911417620] [2020-07-19 21:32:29,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:32:29,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:32:29,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:32:29,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:32:29,839 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 4 states. [2020-07-19 21:32:29,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:32:29,972 INFO L93 Difference]: Finished difference Result 141 states and 159 transitions. [2020-07-19 21:32:29,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:32:29,973 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-19 21:32:29,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:32:29,974 INFO L225 Difference]: With dead ends: 141 [2020-07-19 21:32:29,974 INFO L226 Difference]: Without dead ends: 100 [2020-07-19 21:32:29,975 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 [2020-07-19 21:32:29,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-07-19 21:32:29,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 79. [2020-07-19 21:32:29,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-19 21:32:29,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2020-07-19 21:32:29,982 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 24 [2020-07-19 21:32:29,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:32:29,982 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2020-07-19 21:32:29,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:32:29,982 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2020-07-19 21:32:29,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-19 21:32:29,983 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:32:29,983 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] [2020-07-19 21:32:29,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-19 21:32:29,984 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]=== [2020-07-19 21:32:29,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:32:29,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1492857654, now seen corresponding path program 1 times [2020-07-19 21:32:29,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:32:29,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50436342] [2020-07-19 21:32:29,985 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3f7cec9 [2020-07-19 21:32:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:30,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:32:30,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50436342] [2020-07-19 21:32:30,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:32:30,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:32:30,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926175268] [2020-07-19 21:32:30,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:32:30,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:32:30,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:32:30,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:32:30,044 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand 4 states. [2020-07-19 21:32:30,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:32:30,171 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2020-07-19 21:32:30,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:32:30,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-07-19 21:32:30,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:32:30,172 INFO L225 Difference]: With dead ends: 79 [2020-07-19 21:32:30,172 INFO L226 Difference]: Without dead ends: 77 [2020-07-19 21:32:30,173 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 [2020-07-19 21:32:30,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-07-19 21:32:30,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-07-19 21:32:30,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-19 21:32:30,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2020-07-19 21:32:30,189 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 25 [2020-07-19 21:32:30,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:32:30,189 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2020-07-19 21:32:30,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:32:30,193 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2020-07-19 21:32:30,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-19 21:32:30,194 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:32:30,194 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] [2020-07-19 21:32:30,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-19 21:32:30,195 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]=== [2020-07-19 21:32:30,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:32:30,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1632693981, now seen corresponding path program 1 times [2020-07-19 21:32:30,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:32:30,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394980895] [2020-07-19 21:32:30,196 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3f7cec9 [2020-07-19 21:32:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:30,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:32:30,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394980895] [2020-07-19 21:32:30,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:32:30,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 21:32:30,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552043181] [2020-07-19 21:32:30,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 21:32:30,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:32:30,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 21:32:30,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:32:30,293 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand 5 states. [2020-07-19 21:32:30,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:32:30,427 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2020-07-19 21:32:30,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 21:32:30,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-19 21:32:30,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:32:30,428 INFO L225 Difference]: With dead ends: 78 [2020-07-19 21:32:30,428 INFO L226 Difference]: Without dead ends: 76 [2020-07-19 21:32:30,429 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 [2020-07-19 21:32:30,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-19 21:32:30,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-07-19 21:32:30,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-19 21:32:30,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-07-19 21:32:30,436 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 27 [2020-07-19 21:32:30,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:32:30,438 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-07-19 21:32:30,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 21:32:30,438 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-07-19 21:32:30,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-19 21:32:30,442 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:32:30,442 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] [2020-07-19 21:32:30,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-19 21:32:30,443 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]=== [2020-07-19 21:32:30,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:32:30,443 INFO L82 PathProgramCache]: Analyzing trace with hash 668074133, now seen corresponding path program 1 times [2020-07-19 21:32:30,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:32:30,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127051339] [2020-07-19 21:32:30,444 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3f7cec9 [2020-07-19 21:32:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:30,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:32:30,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127051339] [2020-07-19 21:32:30,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:32:30,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 21:32:30,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218376013] [2020-07-19 21:32:30,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 21:32:30,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:32:30,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 21:32:30,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-19 21:32:30,565 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 6 states. [2020-07-19 21:32:30,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:32:30,862 INFO L93 Difference]: Finished difference Result 179 states and 203 transitions. [2020-07-19 21:32:30,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-19 21:32:30,863 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-07-19 21:32:30,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:32:30,864 INFO L225 Difference]: With dead ends: 179 [2020-07-19 21:32:30,864 INFO L226 Difference]: Without dead ends: 137 [2020-07-19 21:32:30,865 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 [2020-07-19 21:32:30,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-07-19 21:32:30,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 85. [2020-07-19 21:32:30,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-07-19 21:32:30,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-07-19 21:32:30,876 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 28 [2020-07-19 21:32:30,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:32:30,876 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-07-19 21:32:30,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 21:32:30,877 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-07-19 21:32:30,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-19 21:32:30,880 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:32:30,880 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] [2020-07-19 21:32:30,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-19 21:32:30,880 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]=== [2020-07-19 21:32:30,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:32:30,881 INFO L82 PathProgramCache]: Analyzing trace with hash 567478293, now seen corresponding path program 1 times [2020-07-19 21:32:30,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:32:30,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18381196] [2020-07-19 21:32:30,881 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3f7cec9 [2020-07-19 21:32:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:31,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:32:31,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18381196] [2020-07-19 21:32:31,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:32:31,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-19 21:32:31,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265032065] [2020-07-19 21:32:31,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-19 21:32:31,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:32:31,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-19 21:32:31,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-19 21:32:31,063 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 8 states. [2020-07-19 21:32:31,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:32:31,751 INFO L93 Difference]: Finished difference Result 228 states and 252 transitions. [2020-07-19 21:32:31,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-19 21:32:31,752 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-07-19 21:32:31,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:32:31,755 INFO L225 Difference]: With dead ends: 228 [2020-07-19 21:32:31,756 INFO L226 Difference]: Without dead ends: 226 [2020-07-19 21:32:31,756 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 [2020-07-19 21:32:31,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-07-19 21:32:31,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 97. [2020-07-19 21:32:31,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-07-19 21:32:31,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2020-07-19 21:32:31,767 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 28 [2020-07-19 21:32:31,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:32:31,767 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2020-07-19 21:32:31,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-19 21:32:31,767 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2020-07-19 21:32:31,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-19 21:32:31,773 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:32:31,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:32:31,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-19 21:32:31,773 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]=== [2020-07-19 21:32:31,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:32:31,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1429819819, now seen corresponding path program 1 times [2020-07-19 21:32:31,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:32:31,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455030688] [2020-07-19 21:32:31,774 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3f7cec9 [2020-07-19 21:32:31,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:31,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-19 21:32:31,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455030688] [2020-07-19 21:32:31,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:32:31,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 21:32:31,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354847831] [2020-07-19 21:32:31,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 21:32:31,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:32:31,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 21:32:31,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:32:31,831 INFO L87 Difference]: Start difference. First operand 97 states and 110 transitions. Second operand 5 states. [2020-07-19 21:32:32,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:32:32,034 INFO L93 Difference]: Finished difference Result 143 states and 162 transitions. [2020-07-19 21:32:32,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 21:32:32,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-19 21:32:32,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:32:32,036 INFO L225 Difference]: With dead ends: 143 [2020-07-19 21:32:32,037 INFO L226 Difference]: Without dead ends: 125 [2020-07-19 21:32:32,037 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 [2020-07-19 21:32:32,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-07-19 21:32:32,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2020-07-19 21:32:32,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-07-19 21:32:32,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 137 transitions. [2020-07-19 21:32:32,045 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 137 transitions. Word has length 30 [2020-07-19 21:32:32,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:32:32,046 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 137 transitions. [2020-07-19 21:32:32,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 21:32:32,046 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 137 transitions. [2020-07-19 21:32:32,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-19 21:32:32,047 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:32:32,047 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] [2020-07-19 21:32:32,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-19 21:32:32,047 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]=== [2020-07-19 21:32:32,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:32:32,048 INFO L82 PathProgramCache]: Analyzing trace with hash -753501909, now seen corresponding path program 1 times [2020-07-19 21:32:32,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:32:32,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563874533] [2020-07-19 21:32:32,048 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3f7cec9 [2020-07-19 21:32:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:32:32,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-19 21:32:32,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563874533] [2020-07-19 21:32:32,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:32:32,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:32:32,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786436186] [2020-07-19 21:32:32,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:32:32,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:32:32,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:32:32,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:32:32,088 INFO L87 Difference]: Start difference. First operand 117 states and 137 transitions. Second operand 4 states. [2020-07-19 21:32:32,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:32:32,231 INFO L93 Difference]: Finished difference Result 117 states and 137 transitions. [2020-07-19 21:32:32,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:32:32,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-07-19 21:32:32,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:32:32,232 INFO L225 Difference]: With dead ends: 117 [2020-07-19 21:32:32,232 INFO L226 Difference]: Without dead ends: 115 [2020-07-19 21:32:32,233 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 [2020-07-19 21:32:32,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-07-19 21:32:32,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-07-19 21:32:32,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-07-19 21:32:32,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2020-07-19 21:32:32,240 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 30 [2020-07-19 21:32:32,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:32:32,240 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2020-07-19 21:32:32,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:32:32,240 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2020-07-19 21:32:32,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-19 21:32:32,241 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:32:32,241 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] [2020-07-19 21:32:32,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-19 21:32:32,242 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]=== [2020-07-19 21:32:32,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:32:32,242 INFO L82 PathProgramCache]: Analyzing trace with hash 758661948, now seen corresponding path program 1 times [2020-07-19 21:32:32,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:32:32,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90943290] [2020-07-19 21:32:32,243 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3f7cec9 [2020-07-19 21:32:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:32:32,257 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:32:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:32:32,269 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:32:32,300 INFO L174 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2020-07-19 21:32:32,300 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 21:32:32,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-19 21:32:32,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:32:32 BoogieIcfgContainer [2020-07-19 21:32:32,342 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:32:32,345 INFO L168 Benchmark]: Toolchain (without parser) took 6844.48 ms. Allocated memory was 144.2 MB in the beginning and 289.4 MB in the end (delta: 145.2 MB). Free memory was 100.9 MB in the beginning and 94.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 151.2 MB. Max. memory is 7.1 GB. [2020-07-19 21:32:32,346 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-19 21:32:32,347 INFO L168 Benchmark]: CACSL2BoogieTranslator took 636.18 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 100.5 MB in the beginning and 167.0 MB in the end (delta: -66.5 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-07-19 21:32:32,347 INFO L168 Benchmark]: Boogie Preprocessor took 90.58 ms. Allocated memory is still 200.8 MB. Free memory was 167.0 MB in the beginning and 163.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-07-19 21:32:32,348 INFO L168 Benchmark]: RCFGBuilder took 780.00 ms. Allocated memory is still 200.8 MB. Free memory was 163.5 MB in the beginning and 107.6 MB in the end (delta: 56.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. [2020-07-19 21:32:32,349 INFO L168 Benchmark]: TraceAbstraction took 5330.79 ms. Allocated memory was 200.8 MB in the beginning and 289.4 MB in the end (delta: 88.6 MB). Free memory was 106.9 MB in the beginning and 94.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 100.5 MB. Max. memory is 7.1 GB. [2020-07-19 21:32:32,353 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 636.18 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 100.5 MB in the beginning and 167.0 MB in the end (delta: -66.5 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.58 ms. Allocated memory is still 200.8 MB. Free memory was 167.0 MB in the beginning and 163.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 780.00 ms. Allocated memory is still 200.8 MB. Free memory was 163.5 MB in the beginning and 107.6 MB in the end (delta: 56.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5330.79 ms. Allocated memory was 200.8 MB in the beginning and 289.4 MB in the end (delta: 88.6 MB). Free memory was 106.9 MB in the beginning and 94.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 100.5 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))={-1:0}, malloc(sizeof(SLL))={-2:0}] [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))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1011] end = ((void*)0) [L1012] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1015] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [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))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1023] COND TRUE len == 0 [L1024] len = 1 VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1027] COND FALSE !(!(((void*)0) != inner)) VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1028] EXPR inner->inner VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [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))={-1:0}, malloc(sizeof(SLL))={-2:0}] [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))={-1:0}, malloc(sizeof(SLL))={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 88 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.2s, 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, 0.7s 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, 0.8s 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...