/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 FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:22:01,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:22:01,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:22:01,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:22:01,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:22:01,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:22:01,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:22:01,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:22:01,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:22:01,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:22:01,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:22:01,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:22:01,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:22:01,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:22:01,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:22:01,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:22:01,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:22:01,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:22:01,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:22:01,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:22:01,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:22:01,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:22:01,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:22:01,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:22:01,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:22:01,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:22:01,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:22:01,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:22:01,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:22:01,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:22:01,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:22:01,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:22:01,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:22:01,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:22:01,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:22:01,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:22:01,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:22:01,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:22:01,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:22:01,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:22:01,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:22:01,288 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 10:22:01,324 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:22:01,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:22:01,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:22:01,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:22:01,327 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:22:01,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:22:01,328 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:22:01,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:22:01,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:22:01,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:22:01,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:22:01,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:22:01,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:22:01,330 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:22:01,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:22:01,331 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:22:01,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:22:01,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:22:01,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:22:01,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:22:01,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:22:01,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:22:01,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:22:01,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:22:01,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:22:01,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:22:01,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:22:01,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:22:01,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:22:01,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-21 10:22:01,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:22:01,805 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:22:01,809 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:22:01,811 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:22:01,811 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:22:01,812 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-21 10:22:01,898 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45b1c18a9/0b879ae7be3b4c2d8d444aeb0665ea4e/FLAG019d8971a [2020-09-21 10:22:02,499 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:22:02,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-21 10:22:02,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45b1c18a9/0b879ae7be3b4c2d8d444aeb0665ea4e/FLAG019d8971a [2020-09-21 10:22:02,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45b1c18a9/0b879ae7be3b4c2d8d444aeb0665ea4e [2020-09-21 10:22:02,806 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:22:02,813 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:22:02,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:22:02,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:22:02,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:22:02,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:22:02" (1/1) ... [2020-09-21 10:22:02,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9c96c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:22:02, skipping insertion in model container [2020-09-21 10:22:02,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:22:02" (1/1) ... [2020-09-21 10:22:02,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:22:02,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:22:03,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:22:03,409 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:22:03,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:22:03,508 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:22:03,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:22:03 WrapperNode [2020-09-21 10:22:03,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:22:03,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:22:03,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:22:03,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:22:03,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:22:03" (1/1) ... [2020-09-21 10:22:03,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:22:03" (1/1) ... [2020-09-21 10:22:03,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:22:03" (1/1) ... [2020-09-21 10:22:03,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:22:03" (1/1) ... [2020-09-21 10:22:03,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:22:03" (1/1) ... [2020-09-21 10:22:03,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:22:03" (1/1) ... [2020-09-21 10:22:03,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:22:03" (1/1) ... [2020-09-21 10:22:03,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:22:03,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:22:03,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:22:03,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:22:03,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:22:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-21 10:22:03,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:22:03,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:22:03,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:22:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-21 10:22:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-21 10:22:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-21 10:22:03,678 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-21 10:22:03,678 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-21 10:22:03,678 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-21 10:22:03,678 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-21 10:22:03,678 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-21 10:22:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-21 10:22:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-21 10:22:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-21 10:22:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-21 10:22:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-21 10:22:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-21 10:22:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-21 10:22:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-21 10:22:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-21 10:22:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-21 10:22:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-21 10:22:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-21 10:22:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-21 10:22:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-21 10:22:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-21 10:22:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-21 10:22:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-21 10:22:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-21 10:22:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-21 10:22:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-21 10:22:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-21 10:22:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-21 10:22:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-21 10:22:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-21 10:22:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-21 10:22:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-21 10:22:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-21 10:22:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-21 10:22:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-21 10:22:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-21 10:22:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-21 10:22:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-21 10:22:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-21 10:22:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-21 10:22:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-21 10:22:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-21 10:22:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-21 10:22:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-21 10:22:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-21 10:22:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-21 10:22:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-21 10:22:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-21 10:22:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:22:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 10:22:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-21 10:22:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:22:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-21 10:22:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-21 10:22:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-21 10:22:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-21 10:22:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-21 10:22:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 10:22:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-21 10:22:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-21 10:22:03,687 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-21 10:22:03,687 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 10:22:03,687 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-21 10:22:03,687 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-21 10:22:03,687 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-21 10:22:03,687 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-21 10:22:03,688 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-21 10:22:03,688 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-21 10:22:03,688 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-21 10:22:03,688 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-21 10:22:03,688 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-21 10:22:03,688 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-21 10:22:03,689 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-21 10:22:03,689 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-21 10:22:03,689 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-21 10:22:03,689 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-21 10:22:03,689 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-21 10:22:03,689 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-21 10:22:03,689 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-21 10:22:03,690 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-21 10:22:03,690 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-21 10:22:03,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-21 10:22:03,690 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-21 10:22:03,690 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-21 10:22:03,690 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-21 10:22:03,691 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-21 10:22:03,691 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-21 10:22:03,691 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-21 10:22:03,691 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-21 10:22:03,691 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-21 10:22:03,691 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-21 10:22:03,692 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-21 10:22:03,692 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-21 10:22:03,692 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-21 10:22:03,692 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-21 10:22:03,692 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-21 10:22:03,692 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-21 10:22:03,692 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-21 10:22:03,693 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-21 10:22:03,693 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-21 10:22:03,693 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-21 10:22:03,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:22:03,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:22:03,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:22:03,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:22:03,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:22:03,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:22:03,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:22:03,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:22:03,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:22:04,368 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:22:04,369 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-09-21 10:22:04,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:22:04 BoogieIcfgContainer [2020-09-21 10:22:04,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:22:04,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:22:04,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:22:04,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:22:04,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:22:02" (1/3) ... [2020-09-21 10:22:04,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7202cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:22:04, skipping insertion in model container [2020-09-21 10:22:04,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:22:03" (2/3) ... [2020-09-21 10:22:04,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7202cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:22:04, skipping insertion in model container [2020-09-21 10:22:04,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:22:04" (3/3) ... [2020-09-21 10:22:04,384 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-09-21 10:22:04,395 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:22:04,407 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-09-21 10:22:04,429 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-09-21 10:22:04,456 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:22:04,456 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:22:04,457 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:22:04,457 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:22:04,457 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:22:04,457 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:22:04,458 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:22:04,458 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:22:04,485 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-09-21 10:22:04,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-21 10:22:04,492 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:04,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:22:04,494 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]=== [2020-09-21 10:22:04,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:04,502 INFO L82 PathProgramCache]: Analyzing trace with hash 11193106, now seen corresponding path program 1 times [2020-09-21 10:22:04,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:04,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383400869] [2020-09-21 10:22:04,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:04,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:22:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:04,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:22:04,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383400869] [2020-09-21 10:22:04,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:22:04,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:22:04,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556530866] [2020-09-21 10:22:04,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:22:04,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:22:04,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:22:04,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:22:04,776 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-09-21 10:22:05,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:22:05,077 INFO L93 Difference]: Finished difference Result 188 states and 306 transitions. [2020-09-21 10:22:05,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:22:05,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-09-21 10:22:05,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:22:05,094 INFO L225 Difference]: With dead ends: 188 [2020-09-21 10:22:05,094 INFO L226 Difference]: Without dead ends: 100 [2020-09-21 10:22:05,100 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 [2020-09-21 10:22:05,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-21 10:22:05,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-09-21 10:22:05,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-21 10:22:05,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-09-21 10:22:05,159 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 8 [2020-09-21 10:22:05,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:22:05,159 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-09-21 10:22:05,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:22:05,160 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-09-21 10:22:05,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 10:22:05,160 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:05,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:22:05,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:22:05,161 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]=== [2020-09-21 10:22:05,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:05,162 INFO L82 PathProgramCache]: Analyzing trace with hash -648207140, now seen corresponding path program 1 times [2020-09-21 10:22:05,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:05,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477854540] [2020-09-21 10:22:05,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:05,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:22:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:05,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:22:05,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477854540] [2020-09-21 10:22:05,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:22:05,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:22:05,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998550769] [2020-09-21 10:22:05,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:22:05,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:22:05,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:22:05,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:22:05,236 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 4 states. [2020-09-21 10:22:05,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:22:05,389 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2020-09-21 10:22:05,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:22:05,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-21 10:22:05,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:22:05,392 INFO L225 Difference]: With dead ends: 85 [2020-09-21 10:22:05,392 INFO L226 Difference]: Without dead ends: 83 [2020-09-21 10:22:05,393 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 [2020-09-21 10:22:05,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-21 10:22:05,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-09-21 10:22:05,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-21 10:22:05,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-09-21 10:22:05,405 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 14 [2020-09-21 10:22:05,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:22:05,405 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-09-21 10:22:05,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:22:05,405 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-09-21 10:22:05,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 10:22:05,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:05,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:22:05,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:22:05,407 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]=== [2020-09-21 10:22:05,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:05,407 INFO L82 PathProgramCache]: Analyzing trace with hash -648205218, now seen corresponding path program 1 times [2020-09-21 10:22:05,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:05,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847749862] [2020-09-21 10:22:05,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:05,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:22:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:05,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:22:05,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847749862] [2020-09-21 10:22:05,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:22:05,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:22:05,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945144219] [2020-09-21 10:22:05,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:22:05,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:22:05,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:22:05,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:22:05,485 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 5 states. [2020-09-21 10:22:05,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:22:05,729 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-09-21 10:22:05,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 10:22:05,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-21 10:22:05,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:22:05,731 INFO L225 Difference]: With dead ends: 140 [2020-09-21 10:22:05,731 INFO L226 Difference]: Without dead ends: 138 [2020-09-21 10:22:05,732 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 [2020-09-21 10:22:05,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-21 10:22:05,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 85. [2020-09-21 10:22:05,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-21 10:22:05,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-09-21 10:22:05,742 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 14 [2020-09-21 10:22:05,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:22:05,742 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-09-21 10:22:05,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:22:05,743 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-09-21 10:22:05,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 10:22:05,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:05,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:22:05,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:22:05,744 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]=== [2020-09-21 10:22:05,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:05,744 INFO L82 PathProgramCache]: Analyzing trace with hash -646358176, now seen corresponding path program 1 times [2020-09-21 10:22:05,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:05,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791583660] [2020-09-21 10:22:05,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:05,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:22:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:05,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:22:05,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791583660] [2020-09-21 10:22:05,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:22:05,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:22:05,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798811346] [2020-09-21 10:22:05,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:22:05,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:22:05,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:22:05,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:22:05,865 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 5 states. [2020-09-21 10:22:06,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:22:06,054 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-09-21 10:22:06,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:22:06,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-21 10:22:06,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:22:06,056 INFO L225 Difference]: With dead ends: 85 [2020-09-21 10:22:06,056 INFO L226 Difference]: Without dead ends: 83 [2020-09-21 10:22:06,059 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 [2020-09-21 10:22:06,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-21 10:22:06,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2020-09-21 10:22:06,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-21 10:22:06,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-09-21 10:22:06,077 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 14 [2020-09-21 10:22:06,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:22:06,077 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-09-21 10:22:06,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:22:06,078 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-09-21 10:22:06,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 10:22:06,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:06,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:22:06,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:22:06,080 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]=== [2020-09-21 10:22:06,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:06,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1093009051, now seen corresponding path program 1 times [2020-09-21 10:22:06,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:06,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399778198] [2020-09-21 10:22:06,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:06,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:22:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:22:06,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399778198] [2020-09-21 10:22:06,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:22:06,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:22:06,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705422390] [2020-09-21 10:22:06,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:22:06,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:22:06,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:22:06,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:22:06,196 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 4 states. [2020-09-21 10:22:06,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:22:06,350 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2020-09-21 10:22:06,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:22:06,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-09-21 10:22:06,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:22:06,351 INFO L225 Difference]: With dead ends: 83 [2020-09-21 10:22:06,352 INFO L226 Difference]: Without dead ends: 79 [2020-09-21 10:22:06,352 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 [2020-09-21 10:22:06,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-21 10:22:06,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-09-21 10:22:06,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-21 10:22:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-09-21 10:22:06,359 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 19 [2020-09-21 10:22:06,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:22:06,360 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-09-21 10:22:06,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:22:06,360 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-09-21 10:22:06,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 10:22:06,361 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:06,361 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] [2020-09-21 10:22:06,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:22:06,361 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]=== [2020-09-21 10:22:06,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:06,362 INFO L82 PathProgramCache]: Analyzing trace with hash -476453587, now seen corresponding path program 1 times [2020-09-21 10:22:06,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:06,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924136568] [2020-09-21 10:22:06,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:06,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:22:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:22:06,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924136568] [2020-09-21 10:22:06,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:22:06,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:22:06,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154976341] [2020-09-21 10:22:06,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:22:06,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:22:06,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:22:06,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:22:06,426 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 6 states. [2020-09-21 10:22:06,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:22:06,603 INFO L93 Difference]: Finished difference Result 136 states and 152 transitions. [2020-09-21 10:22:06,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:22:06,604 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-09-21 10:22:06,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:22:06,605 INFO L225 Difference]: With dead ends: 136 [2020-09-21 10:22:06,605 INFO L226 Difference]: Without dead ends: 116 [2020-09-21 10:22:06,606 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 [2020-09-21 10:22:06,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-21 10:22:06,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 75. [2020-09-21 10:22:06,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-21 10:22:06,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-09-21 10:22:06,613 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2020-09-21 10:22:06,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:22:06,613 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-09-21 10:22:06,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:22:06,613 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-09-21 10:22:06,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 10:22:06,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:06,614 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] [2020-09-21 10:22:06,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:22:06,615 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]=== [2020-09-21 10:22:06,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:06,615 INFO L82 PathProgramCache]: Analyzing trace with hash 337242584, now seen corresponding path program 1 times [2020-09-21 10:22:06,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:06,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609309807] [2020-09-21 10:22:06,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:06,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:22:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:22:06,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609309807] [2020-09-21 10:22:06,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:22:06,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:22:06,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298771879] [2020-09-21 10:22:06,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:22:06,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:22:06,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:22:06,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:22:06,664 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 4 states. [2020-09-21 10:22:06,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:22:06,783 INFO L93 Difference]: Finished difference Result 141 states and 161 transitions. [2020-09-21 10:22:06,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:22:06,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-09-21 10:22:06,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:22:06,784 INFO L225 Difference]: With dead ends: 141 [2020-09-21 10:22:06,785 INFO L226 Difference]: Without dead ends: 99 [2020-09-21 10:22:06,785 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 [2020-09-21 10:22:06,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-21 10:22:06,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2020-09-21 10:22:06,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-21 10:22:06,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-09-21 10:22:06,792 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 24 [2020-09-21 10:22:06,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:22:06,792 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-09-21 10:22:06,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:22:06,793 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-09-21 10:22:06,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 10:22:06,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:06,794 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] [2020-09-21 10:22:06,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:22:06,794 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]=== [2020-09-21 10:22:06,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:06,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1864575058, now seen corresponding path program 1 times [2020-09-21 10:22:06,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:06,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991383740] [2020-09-21 10:22:06,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:06,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:22:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:06,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:22:06,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991383740] [2020-09-21 10:22:06,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:22:06,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:22:06,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877670275] [2020-09-21 10:22:06,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:22:06,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:22:06,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:22:06,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:22:06,843 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 4 states. [2020-09-21 10:22:06,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:22:06,973 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2020-09-21 10:22:06,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:22:06,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-21 10:22:06,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:22:06,975 INFO L225 Difference]: With dead ends: 78 [2020-09-21 10:22:06,975 INFO L226 Difference]: Without dead ends: 76 [2020-09-21 10:22:06,975 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 [2020-09-21 10:22:06,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-21 10:22:06,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-09-21 10:22:06,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-21 10:22:06,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-09-21 10:22:06,981 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 25 [2020-09-21 10:22:06,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:22:06,981 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-09-21 10:22:06,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:22:06,981 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-09-21 10:22:06,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 10:22:06,982 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:06,982 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] [2020-09-21 10:22:06,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:22:06,983 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]=== [2020-09-21 10:22:06,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:06,983 INFO L82 PathProgramCache]: Analyzing trace with hash -660297045, now seen corresponding path program 1 times [2020-09-21 10:22:06,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:06,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103842700] [2020-09-21 10:22:06,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:07,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:22:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:07,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:22:07,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103842700] [2020-09-21 10:22:07,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:22:07,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:22:07,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092029292] [2020-09-21 10:22:07,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:22:07,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:22:07,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:22:07,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:22:07,039 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 5 states. [2020-09-21 10:22:07,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:22:07,324 INFO L93 Difference]: Finished difference Result 194 states and 222 transitions. [2020-09-21 10:22:07,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:22:07,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-21 10:22:07,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:22:07,326 INFO L225 Difference]: With dead ends: 194 [2020-09-21 10:22:07,326 INFO L226 Difference]: Without dead ends: 130 [2020-09-21 10:22:07,327 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 [2020-09-21 10:22:07,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-09-21 10:22:07,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 78. [2020-09-21 10:22:07,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-21 10:22:07,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-09-21 10:22:07,332 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 27 [2020-09-21 10:22:07,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:22:07,333 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-09-21 10:22:07,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:22:07,333 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-09-21 10:22:07,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 10:22:07,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:07,334 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] [2020-09-21 10:22:07,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:22:07,334 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]=== [2020-09-21 10:22:07,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:07,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1681365399, now seen corresponding path program 1 times [2020-09-21 10:22:07,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:07,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553558863] [2020-09-21 10:22:07,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:07,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:22:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:07,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:22:07,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553558863] [2020-09-21 10:22:07,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:22:07,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:22:07,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121730397] [2020-09-21 10:22:07,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:22:07,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:22:07,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:22:07,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:22:07,400 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 5 states. [2020-09-21 10:22:07,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:22:07,538 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2020-09-21 10:22:07,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:22:07,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-21 10:22:07,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:22:07,540 INFO L225 Difference]: With dead ends: 79 [2020-09-21 10:22:07,540 INFO L226 Difference]: Without dead ends: 77 [2020-09-21 10:22:07,540 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 [2020-09-21 10:22:07,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-21 10:22:07,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-09-21 10:22:07,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-21 10:22:07,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-09-21 10:22:07,545 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 27 [2020-09-21 10:22:07,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:22:07,546 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-09-21 10:22:07,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:22:07,546 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-09-21 10:22:07,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 10:22:07,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:07,547 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] [2020-09-21 10:22:07,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 10:22:07,547 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]=== [2020-09-21 10:22:07,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:07,548 INFO L82 PathProgramCache]: Analyzing trace with hash -840739825, now seen corresponding path program 1 times [2020-09-21 10:22:07,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:07,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361228315] [2020-09-21 10:22:07,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:07,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:22:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:07,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:22:07,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361228315] [2020-09-21 10:22:07,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:22:07,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:22:07,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542496250] [2020-09-21 10:22:07,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:22:07,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:22:07,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:22:07,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:22:07,641 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 6 states. [2020-09-21 10:22:07,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:22:07,967 INFO L93 Difference]: Finished difference Result 182 states and 209 transitions. [2020-09-21 10:22:07,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:22:07,968 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-09-21 10:22:07,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:22:07,969 INFO L225 Difference]: With dead ends: 182 [2020-09-21 10:22:07,969 INFO L226 Difference]: Without dead ends: 139 [2020-09-21 10:22:07,970 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 [2020-09-21 10:22:07,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-09-21 10:22:07,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-09-21 10:22:07,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-21 10:22:07,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2020-09-21 10:22:07,975 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 28 [2020-09-21 10:22:07,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:22:07,976 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2020-09-21 10:22:07,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:22:07,976 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2020-09-21 10:22:07,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 10:22:07,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:07,977 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] [2020-09-21 10:22:07,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 10:22:07,978 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]=== [2020-09-21 10:22:07,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:07,978 INFO L82 PathProgramCache]: Analyzing trace with hash -941335665, now seen corresponding path program 1 times [2020-09-21 10:22:07,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:07,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220451194] [2020-09-21 10:22:07,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:08,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:22:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:08,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:22:08,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220451194] [2020-09-21 10:22:08,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:22:08,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:22:08,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314295660] [2020-09-21 10:22:08,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:22:08,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:22:08,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:22:08,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:22:08,220 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand 8 states. [2020-09-21 10:22:08,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:22:08,932 INFO L93 Difference]: Finished difference Result 237 states and 265 transitions. [2020-09-21 10:22:08,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 10:22:08,933 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-09-21 10:22:08,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:22:08,937 INFO L225 Difference]: With dead ends: 237 [2020-09-21 10:22:08,937 INFO L226 Difference]: Without dead ends: 235 [2020-09-21 10:22:08,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:22:08,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-09-21 10:22:08,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 98. [2020-09-21 10:22:08,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-21 10:22:08,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2020-09-21 10:22:08,946 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 28 [2020-09-21 10:22:08,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:22:08,947 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2020-09-21 10:22:08,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:22:08,947 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2020-09-21 10:22:08,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 10:22:08,948 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:08,948 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] [2020-09-21 10:22:08,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 10:22:08,949 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]=== [2020-09-21 10:22:08,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:08,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1932526751, now seen corresponding path program 1 times [2020-09-21 10:22:08,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:08,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420910898] [2020-09-21 10:22:08,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:09,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:22:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:09,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 10:22:09,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420910898] [2020-09-21 10:22:09,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:22:09,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:22:09,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335135304] [2020-09-21 10:22:09,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:22:09,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:22:09,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:22:09,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:22:09,052 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand 5 states. [2020-09-21 10:22:09,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:22:09,278 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2020-09-21 10:22:09,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 10:22:09,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-21 10:22:09,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:22:09,280 INFO L225 Difference]: With dead ends: 145 [2020-09-21 10:22:09,280 INFO L226 Difference]: Without dead ends: 127 [2020-09-21 10:22:09,281 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 [2020-09-21 10:22:09,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-09-21 10:22:09,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2020-09-21 10:22:09,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-21 10:22:09,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 141 transitions. [2020-09-21 10:22:09,288 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 141 transitions. Word has length 30 [2020-09-21 10:22:09,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:22:09,289 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 141 transitions. [2020-09-21 10:22:09,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:22:09,289 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 141 transitions. [2020-09-21 10:22:09,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 10:22:09,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:09,293 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] [2020-09-21 10:22:09,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 10:22:09,293 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]=== [2020-09-21 10:22:09,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:09,293 INFO L82 PathProgramCache]: Analyzing trace with hash -250794977, now seen corresponding path program 1 times [2020-09-21 10:22:09,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:09,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446727549] [2020-09-21 10:22:09,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:09,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:22:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 10:22:09,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446727549] [2020-09-21 10:22:09,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:22:09,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:22:09,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570861549] [2020-09-21 10:22:09,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:22:09,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:22:09,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:22:09,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:22:09,360 INFO L87 Difference]: Start difference. First operand 119 states and 141 transitions. Second operand 4 states. [2020-09-21 10:22:09,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:22:09,542 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2020-09-21 10:22:09,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:22:09,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-09-21 10:22:09,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:22:09,544 INFO L225 Difference]: With dead ends: 119 [2020-09-21 10:22:09,544 INFO L226 Difference]: Without dead ends: 117 [2020-09-21 10:22:09,544 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 [2020-09-21 10:22:09,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-21 10:22:09,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-09-21 10:22:09,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-09-21 10:22:09,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 139 transitions. [2020-09-21 10:22:09,552 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 139 transitions. Word has length 30 [2020-09-21 10:22:09,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:22:09,552 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 139 transitions. [2020-09-21 10:22:09,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:22:09,552 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 139 transitions. [2020-09-21 10:22:09,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-21 10:22:09,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:09,553 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] [2020-09-21 10:22:09,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 10:22:09,554 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]=== [2020-09-21 10:22:09,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:09,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1485208190, now seen corresponding path program 1 times [2020-09-21 10:22:09,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:09,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907992032] [2020-09-21 10:22:09,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:09,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:22:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:09,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:22:09,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907992032] [2020-09-21 10:22:09,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:22:09,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:22:09,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632745186] [2020-09-21 10:22:09,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:22:09,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:22:09,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:22:09,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:22:09,736 INFO L87 Difference]: Start difference. First operand 117 states and 139 transitions. Second operand 8 states. [2020-09-21 10:22:10,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:22:10,334 INFO L93 Difference]: Finished difference Result 240 states and 275 transitions. [2020-09-21 10:22:10,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 10:22:10,335 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-09-21 10:22:10,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:22:10,337 INFO L225 Difference]: With dead ends: 240 [2020-09-21 10:22:10,337 INFO L226 Difference]: Without dead ends: 238 [2020-09-21 10:22:10,337 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 [2020-09-21 10:22:10,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-21 10:22:10,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 120. [2020-09-21 10:22:10,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-21 10:22:10,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 142 transitions. [2020-09-21 10:22:10,350 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 142 transitions. Word has length 31 [2020-09-21 10:22:10,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:22:10,351 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 142 transitions. [2020-09-21 10:22:10,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:22:10,351 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 142 transitions. [2020-09-21 10:22:10,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-21 10:22:10,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:10,353 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:22:10,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 10:22:10,353 INFO L427 AbstractCegarLoop]: === Iteration 16 === [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]=== [2020-09-21 10:22:10,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:10,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1679328926, now seen corresponding path program 1 times [2020-09-21 10:22:10,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:10,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547149926] [2020-09-21 10:22:10,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:10,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:22:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:10,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:22:10,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547149926] [2020-09-21 10:22:10,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:22:10,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 10:22:10,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14514183] [2020-09-21 10:22:10,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:22:10,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:22:10,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:22:10,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:22:10,449 INFO L87 Difference]: Start difference. First operand 120 states and 142 transitions. Second operand 6 states. [2020-09-21 10:22:10,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:22:10,745 INFO L93 Difference]: Finished difference Result 207 states and 241 transitions. [2020-09-21 10:22:10,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 10:22:10,746 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-21 10:22:10,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:22:10,747 INFO L225 Difference]: With dead ends: 207 [2020-09-21 10:22:10,747 INFO L226 Difference]: Without dead ends: 145 [2020-09-21 10:22:10,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:22:10,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-09-21 10:22:10,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 122. [2020-09-21 10:22:10,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-21 10:22:10,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2020-09-21 10:22:10,756 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 33 [2020-09-21 10:22:10,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:22:10,757 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2020-09-21 10:22:10,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:22:10,757 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2020-09-21 10:22:10,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-21 10:22:10,758 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:10,758 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, 1, 1] [2020-09-21 10:22:10,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-21 10:22:10,758 INFO L427 AbstractCegarLoop]: === Iteration 17 === [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]=== [2020-09-21 10:22:10,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:10,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1814124928, now seen corresponding path program 1 times [2020-09-21 10:22:10,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:10,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392377996] [2020-09-21 10:22:10,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:10,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:22:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:10,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:22:10,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392377996] [2020-09-21 10:22:10,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:22:10,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 10:22:10,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125091925] [2020-09-21 10:22:10,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:22:10,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:22:10,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:22:10,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:22:10,851 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand 7 states. [2020-09-21 10:22:11,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:22:11,132 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2020-09-21 10:22:11,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 10:22:11,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-21 10:22:11,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:22:11,134 INFO L225 Difference]: With dead ends: 198 [2020-09-21 10:22:11,135 INFO L226 Difference]: Without dead ends: 178 [2020-09-21 10:22:11,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:22:11,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-21 10:22:11,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 132. [2020-09-21 10:22:11,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-21 10:22:11,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2020-09-21 10:22:11,144 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 33 [2020-09-21 10:22:11,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:22:11,144 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2020-09-21 10:22:11,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:22:11,145 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2020-09-21 10:22:11,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-21 10:22:11,145 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:11,145 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, 1, 1] [2020-09-21 10:22:11,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-21 10:22:11,146 INFO L427 AbstractCegarLoop]: === Iteration 18 === [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]=== [2020-09-21 10:22:11,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:11,146 INFO L82 PathProgramCache]: Analyzing trace with hash 2032979646, now seen corresponding path program 1 times [2020-09-21 10:22:11,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:11,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431988603] [2020-09-21 10:22:11,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:11,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:22:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:11,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 10:22:11,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431988603] [2020-09-21 10:22:11,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:22:11,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:22:11,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156837806] [2020-09-21 10:22:11,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:22:11,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:22:11,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:22:11,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:22:11,219 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand 6 states. [2020-09-21 10:22:11,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:22:11,447 INFO L93 Difference]: Finished difference Result 182 states and 208 transitions. [2020-09-21 10:22:11,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 10:22:11,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-21 10:22:11,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:22:11,449 INFO L225 Difference]: With dead ends: 182 [2020-09-21 10:22:11,449 INFO L226 Difference]: Without dead ends: 166 [2020-09-21 10:22:11,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:22:11,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-21 10:22:11,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 152. [2020-09-21 10:22:11,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-09-21 10:22:11,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 179 transitions. [2020-09-21 10:22:11,460 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 179 transitions. Word has length 33 [2020-09-21 10:22:11,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:22:11,461 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 179 transitions. [2020-09-21 10:22:11,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:22:11,461 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 179 transitions. [2020-09-21 10:22:11,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-21 10:22:11,462 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:11,462 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:22:11,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-21 10:22:11,462 INFO L427 AbstractCegarLoop]: === Iteration 19 === [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]=== [2020-09-21 10:22:11,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:11,463 INFO L82 PathProgramCache]: Analyzing trace with hash 270360779, now seen corresponding path program 1 times [2020-09-21 10:22:11,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:11,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317315754] [2020-09-21 10:22:11,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:11,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:22:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:11,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:22:11,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317315754] [2020-09-21 10:22:11,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:22:11,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 10:22:11,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950057816] [2020-09-21 10:22:11,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:22:11,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:22:11,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:22:11,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:22:11,537 INFO L87 Difference]: Start difference. First operand 152 states and 179 transitions. Second operand 7 states. [2020-09-21 10:22:11,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:22:11,838 INFO L93 Difference]: Finished difference Result 241 states and 276 transitions. [2020-09-21 10:22:11,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:22:11,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-21 10:22:11,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:22:11,840 INFO L225 Difference]: With dead ends: 241 [2020-09-21 10:22:11,840 INFO L226 Difference]: Without dead ends: 210 [2020-09-21 10:22:11,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:22:11,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-09-21 10:22:11,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 169. [2020-09-21 10:22:11,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-09-21 10:22:11,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2020-09-21 10:22:11,859 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 36 [2020-09-21 10:22:11,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:22:11,859 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2020-09-21 10:22:11,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:22:11,860 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2020-09-21 10:22:11,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-21 10:22:11,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:11,860 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, 1, 1, 1, 1, 1] [2020-09-21 10:22:11,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-21 10:22:11,863 INFO L427 AbstractCegarLoop]: === Iteration 20 === [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]=== [2020-09-21 10:22:11,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:11,863 INFO L82 PathProgramCache]: Analyzing trace with hash -620993698, now seen corresponding path program 1 times [2020-09-21 10:22:11,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:11,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156531795] [2020-09-21 10:22:11,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:11,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:22:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:22:11,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156531795] [2020-09-21 10:22:11,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:22:11,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:22:11,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607210136] [2020-09-21 10:22:11,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:22:11,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:22:11,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:22:11,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:22:11,941 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 4 states. [2020-09-21 10:22:12,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:22:12,114 INFO L93 Difference]: Finished difference Result 354 states and 437 transitions. [2020-09-21 10:22:12,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:22:12,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-09-21 10:22:12,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:22:12,118 INFO L225 Difference]: With dead ends: 354 [2020-09-21 10:22:12,118 INFO L226 Difference]: Without dead ends: 258 [2020-09-21 10:22:12,118 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 [2020-09-21 10:22:12,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-09-21 10:22:12,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 218. [2020-09-21 10:22:12,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-21 10:22:12,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 262 transitions. [2020-09-21 10:22:12,130 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 262 transitions. Word has length 36 [2020-09-21 10:22:12,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:22:12,131 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 262 transitions. [2020-09-21 10:22:12,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:22:12,131 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 262 transitions. [2020-09-21 10:22:12,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 10:22:12,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:12,132 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:22:12,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-21 10:22:12,132 INFO L427 AbstractCegarLoop]: === Iteration 21 === [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]=== [2020-09-21 10:22:12,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:12,133 INFO L82 PathProgramCache]: Analyzing trace with hash -366933706, now seen corresponding path program 1 times [2020-09-21 10:22:12,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:12,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623524097] [2020-09-21 10:22:12,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:12,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:22:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:12,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:22:12,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623524097] [2020-09-21 10:22:12,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:22:12,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 10:22:12,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797415004] [2020-09-21 10:22:12,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:22:12,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:22:12,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:22:12,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:22:12,409 INFO L87 Difference]: Start difference. First operand 218 states and 262 transitions. Second operand 10 states. [2020-09-21 10:22:13,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:22:13,132 INFO L93 Difference]: Finished difference Result 430 states and 511 transitions. [2020-09-21 10:22:13,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 10:22:13,132 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-09-21 10:22:13,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:22:13,134 INFO L225 Difference]: With dead ends: 430 [2020-09-21 10:22:13,134 INFO L226 Difference]: Without dead ends: 338 [2020-09-21 10:22:13,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-09-21 10:22:13,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-09-21 10:22:13,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 235. [2020-09-21 10:22:13,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-09-21 10:22:13,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 282 transitions. [2020-09-21 10:22:13,153 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 282 transitions. Word has length 40 [2020-09-21 10:22:13,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:22:13,154 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 282 transitions. [2020-09-21 10:22:13,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:22:13,154 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 282 transitions. [2020-09-21 10:22:13,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 10:22:13,154 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:13,155 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:22:13,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-21 10:22:13,155 INFO L427 AbstractCegarLoop]: === Iteration 22 === [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]=== [2020-09-21 10:22:13,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:13,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1933888884, now seen corresponding path program 1 times [2020-09-21 10:22:13,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:13,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921226279] [2020-09-21 10:22:13,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:13,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:22:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:22:13,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921226279] [2020-09-21 10:22:13,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:22:13,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:22:13,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360052912] [2020-09-21 10:22:13,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:22:13,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:22:13,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:22:13,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:22:13,240 INFO L87 Difference]: Start difference. First operand 235 states and 282 transitions. Second operand 6 states. [2020-09-21 10:22:13,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:22:13,488 INFO L93 Difference]: Finished difference Result 353 states and 426 transitions. [2020-09-21 10:22:13,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 10:22:13,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-09-21 10:22:13,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:22:13,493 INFO L225 Difference]: With dead ends: 353 [2020-09-21 10:22:13,494 INFO L226 Difference]: Without dead ends: 244 [2020-09-21 10:22:13,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:22:13,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-09-21 10:22:13,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 237. [2020-09-21 10:22:13,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-09-21 10:22:13,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 284 transitions. [2020-09-21 10:22:13,510 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 284 transitions. Word has length 40 [2020-09-21 10:22:13,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:22:13,510 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 284 transitions. [2020-09-21 10:22:13,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:22:13,510 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 284 transitions. [2020-09-21 10:22:13,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 10:22:13,511 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:13,512 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:22:13,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-21 10:22:13,512 INFO L427 AbstractCegarLoop]: === Iteration 23 === [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]=== [2020-09-21 10:22:13,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:13,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1340010058, now seen corresponding path program 1 times [2020-09-21 10:22:13,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:13,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377459083] [2020-09-21 10:22:13,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:13,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:22:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:22:13,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:22:13,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377459083] [2020-09-21 10:22:13,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:22:13,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 10:22:13,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635038526] [2020-09-21 10:22:13,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:22:13,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:22:13,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:22:13,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:22:13,807 INFO L87 Difference]: Start difference. First operand 237 states and 284 transitions. Second operand 10 states. [2020-09-21 10:22:14,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:22:14,498 INFO L93 Difference]: Finished difference Result 441 states and 526 transitions. [2020-09-21 10:22:14,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 10:22:14,499 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-09-21 10:22:14,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:22:14,501 INFO L225 Difference]: With dead ends: 441 [2020-09-21 10:22:14,501 INFO L226 Difference]: Without dead ends: 349 [2020-09-21 10:22:14,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:22:14,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-09-21 10:22:14,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 239. [2020-09-21 10:22:14,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-09-21 10:22:14,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 286 transitions. [2020-09-21 10:22:14,516 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 286 transitions. Word has length 40 [2020-09-21 10:22:14,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:22:14,516 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 286 transitions. [2020-09-21 10:22:14,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:22:14,516 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 286 transitions. [2020-09-21 10:22:14,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 10:22:14,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:22:14,517 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:22:14,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-21 10:22:14,518 INFO L427 AbstractCegarLoop]: === Iteration 24 === [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]=== [2020-09-21 10:22:14,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:22:14,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1717014481, now seen corresponding path program 1 times [2020-09-21 10:22:14,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:22:14,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086357936] [2020-09-21 10:22:14,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:22:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:22:14,563 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:22:14,563 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:22:14,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-21 10:22:14,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:22:14 BoogieIcfgContainer [2020-09-21 10:22:14,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:22:14,622 INFO L168 Benchmark]: Toolchain (without parser) took 11812.56 ms. Allocated memory was 140.0 MB in the beginning and 351.8 MB in the end (delta: 211.8 MB). Free memory was 100.2 MB in the beginning and 159.9 MB in the end (delta: -59.7 MB). Peak memory consumption was 152.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:22:14,622 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 10:22:14,623 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.13 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 99.6 MB in the beginning and 170.2 MB in the end (delta: -70.6 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:22:14,624 INFO L168 Benchmark]: Boogie Preprocessor took 88.23 ms. Allocated memory is still 203.4 MB. Free memory was 170.2 MB in the beginning and 166.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-09-21 10:22:14,624 INFO L168 Benchmark]: RCFGBuilder took 776.25 ms. Allocated memory is still 203.4 MB. Free memory was 166.9 MB in the beginning and 111.1 MB in the end (delta: 55.8 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. [2020-09-21 10:22:14,627 INFO L168 Benchmark]: TraceAbstraction took 10242.87 ms. Allocated memory was 203.4 MB in the beginning and 351.8 MB in the end (delta: 148.4 MB). Free memory was 110.5 MB in the beginning and 159.9 MB in the end (delta: -49.5 MB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:22:14,629 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 693.13 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 99.6 MB in the beginning and 170.2 MB in the end (delta: -70.6 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.23 ms. Allocated memory is still 203.4 MB. Free memory was 170.2 MB in the beginning and 166.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 776.25 ms. Allocated memory is still 203.4 MB. Free memory was 166.9 MB in the beginning and 111.1 MB in the end (delta: 55.8 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10242.87 ms. Allocated memory was 203.4 MB in the beginning and 351.8 MB in the end (delta: 148.4 MB). Free memory was 110.5 MB in the beginning and 159.9 MB in the end (delta: -49.5 MB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1025]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L991] SLL* list = malloc(sizeof(SLL)); [L992] list->next = ((void*)0) [L993] COND FALSE !(!(list != ((void*)0))) [L993] COND FALSE !(__VERIFIER_nondet_int()) [L993] list->inner = malloc(sizeof(SLL)) [L993] EXPR list->inner [L993] list->inner->next = ((void*)0) [L993] EXPR list->inner [L993] list->inner->inner = ((void*)0) [L993] EXPR list->inner [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L995] SLL* end = list; [L998] COND FALSE !(__VERIFIER_nondet_int()) [L1008] end = ((void*)0) [L1009] end = list [L1012] COND FALSE !(!(((void*)0) != end)) [L1014] COND TRUE ((void*)0) != end [L1016] int len = 0; [L1017] EXPR end->inner [L1017] SLL* inner = end->inner; [L1018] COND TRUE ((void*)0) != inner [L1020] COND TRUE len == 0 [L1021] len = 1 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND FALSE !(!(((void*)0) == inner->inner)) [L1026] EXPR inner->next [L1026] COND FALSE !(!(((void*)0) == inner->next)) [L1027] EXPR inner->inner [L1027] inner = inner->inner [L1028] COND TRUE len == 1 [L1029] EXPR inner->inner [L1029] inner = inner->inner [L1018] COND TRUE ((void*)0) != inner [L1020] COND FALSE !(len == 0) [L1023] len = 2 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND TRUE !(((void*)0) == inner->inner) [L1025] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 89 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.1s, OverallIterations: 24, TraceHistogramMax: 2, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1788 SDtfs, 2214 SDslu, 3432 SDs, 0 SdLazy, 4020 SolverSat, 226 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 208 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 23 MinimizatonAttempts, 892 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 670 NumberOfCodeBlocks, 670 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 607 ConstructedInterpolants, 0 QuantifiedInterpolants, 157879 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 19 PerfectInterpolantSequences, 9/16 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...