/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 02:09:44,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 02:09:44,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 02:09:44,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 02:09:44,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 02:09:44,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 02:09:44,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 02:09:44,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 02:09:44,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 02:09:44,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 02:09:44,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 02:09:44,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 02:09:44,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 02:09:44,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 02:09:44,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 02:09:44,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 02:09:44,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 02:09:44,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 02:09:44,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 02:09:44,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 02:09:44,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 02:09:44,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 02:09:44,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 02:09:44,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 02:09:44,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 02:09:44,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 02:09:44,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 02:09:44,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 02:09:44,257 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 02:09:44,276 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 02:09:44,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 02:09:44,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 02:09:44,282 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 02:09:44,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 02:09:44,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 02:09:44,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 02:09:44,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 02:09:44,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 02:09:44,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 02:09:44,285 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 02:09:44,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 02:09:44,285 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 02:09:44,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 02:09:44,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 02:09:44,286 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 02:09:44,286 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 02:09:44,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 02:09:44,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:09:44,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 02:09:44,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 02:09:44,287 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 02:09:44,287 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 02:09:44,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 02:09:44,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 02:09:44,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 02:09:44,755 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 02:09:44,755 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 02:09:44,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2020-11-07 02:09:44,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b02708e65/59a62643015249e8a94dda003373701e/FLAG7b3e63c2b [2020-11-07 02:09:45,516 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 02:09:45,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2020-11-07 02:09:45,529 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b02708e65/59a62643015249e8a94dda003373701e/FLAG7b3e63c2b [2020-11-07 02:09:45,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b02708e65/59a62643015249e8a94dda003373701e [2020-11-07 02:09:45,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 02:09:45,853 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 02:09:45,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 02:09:45,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 02:09:45,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 02:09:45,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:09:45" (1/1) ... [2020-11-07 02:09:45,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4042ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:45, skipping insertion in model container [2020-11-07 02:09:45,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:09:45" (1/1) ... [2020-11-07 02:09:45,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 02:09:45,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 02:09:46,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:09:46,204 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 02:09:46,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:09:46,310 INFO L208 MainTranslator]: Completed translation [2020-11-07 02:09:46,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:46 WrapperNode [2020-11-07 02:09:46,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 02:09:46,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 02:09:46,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 02:09:46,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 02:09:46,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:46" (1/1) ... [2020-11-07 02:09:46,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:46" (1/1) ... [2020-11-07 02:09:46,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:46" (1/1) ... [2020-11-07 02:09:46,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:46" (1/1) ... [2020-11-07 02:09:46,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:46" (1/1) ... [2020-11-07 02:09:46,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:46" (1/1) ... [2020-11-07 02:09:46,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:46" (1/1) ... [2020-11-07 02:09:46,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 02:09:46,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 02:09:46,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 02:09:46,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 02:09:46,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:09:46,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 02:09:46,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 02:09:46,530 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 02:09:46,530 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 02:09:46,530 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 02:09:46,530 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 02:09:46,530 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 02:09:46,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 02:09:46,531 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-11-07 02:09:46,531 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-11-07 02:09:46,531 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 02:09:46,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 02:09:46,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 02:09:46,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-07 02:09:46,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 02:09:46,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 02:09:46,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 02:09:46,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 02:09:46,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-07 02:09:46,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 02:09:47,692 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 02:09:47,692 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 02:09:47,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:09:47 BoogieIcfgContainer [2020-11-07 02:09:47,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 02:09:47,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 02:09:47,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 02:09:47,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 02:09:47,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:09:45" (1/3) ... [2020-11-07 02:09:47,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40710f24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:09:47, skipping insertion in model container [2020-11-07 02:09:47,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:46" (2/3) ... [2020-11-07 02:09:47,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40710f24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:09:47, skipping insertion in model container [2020-11-07 02:09:47,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:09:47" (3/3) ... [2020-11-07 02:09:47,709 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2020-11-07 02:09:47,729 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 02:09:47,734 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 02:09:47,749 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 02:09:47,777 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 02:09:47,777 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 02:09:47,778 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 02:09:47,778 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 02:09:47,778 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 02:09:47,778 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 02:09:47,778 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 02:09:47,778 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 02:09:47,806 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states. [2020-11-07 02:09:47,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-11-07 02:09:47,835 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:09:47,836 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:09:47,837 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:09:47,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:09:47,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1556277972, now seen corresponding path program 1 times [2020-11-07 02:09:47,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:09:47,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682495796] [2020-11-07 02:09:47,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:09:47,953 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:09:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:48,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:09:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:48,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:09:48,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682495796] [2020-11-07 02:09:48,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:09:48,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 02:09:48,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110675019] [2020-11-07 02:09:48,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 02:09:48,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:09:48,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 02:09:48,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 02:09:48,951 INFO L87 Difference]: Start difference. First operand 371 states. Second operand 5 states. [2020-11-07 02:09:50,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:09:50,011 INFO L93 Difference]: Finished difference Result 425 states and 434 transitions. [2020-11-07 02:09:50,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 02:09:50,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 323 [2020-11-07 02:09:50,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:09:50,031 INFO L225 Difference]: With dead ends: 425 [2020-11-07 02:09:50,031 INFO L226 Difference]: Without dead ends: 355 [2020-11-07 02:09:50,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-07 02:09:50,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-11-07 02:09:50,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 341. [2020-11-07 02:09:50,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-11-07 02:09:50,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 341 transitions. [2020-11-07 02:09:50,133 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 341 transitions. Word has length 323 [2020-11-07 02:09:50,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:09:50,135 INFO L481 AbstractCegarLoop]: Abstraction has 341 states and 341 transitions. [2020-11-07 02:09:50,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 02:09:50,136 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 341 transitions. [2020-11-07 02:09:50,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-11-07 02:09:50,148 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:09:50,148 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:09:50,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 02:09:50,149 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:09:50,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:09:50,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1891967570, now seen corresponding path program 1 times [2020-11-07 02:09:50,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:09:50,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359394600] [2020-11-07 02:09:50,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:09:50,268 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-11-07 02:09:51,867 WARN L194 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2020-11-07 02:09:51,885 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:09:51,888 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:09:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:52,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:09:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:52,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:09:52,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359394600] [2020-11-07 02:09:52,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:09:52,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 02:09:52,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424110402] [2020-11-07 02:09:52,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 02:09:52,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:09:52,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 02:09:52,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 02:09:52,496 INFO L87 Difference]: Start difference. First operand 341 states and 341 transitions. Second operand 6 states. [2020-11-07 02:09:53,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:09:53,709 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2020-11-07 02:09:53,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 02:09:53,715 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 340 [2020-11-07 02:09:53,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:09:53,720 INFO L225 Difference]: With dead ends: 381 [2020-11-07 02:09:53,720 INFO L226 Difference]: Without dead ends: 372 [2020-11-07 02:09:53,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-07 02:09:53,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-11-07 02:09:53,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 358. [2020-11-07 02:09:53,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-11-07 02:09:53,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 358 transitions. [2020-11-07 02:09:53,825 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 358 transitions. Word has length 340 [2020-11-07 02:09:53,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:09:53,826 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 358 transitions. [2020-11-07 02:09:53,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 02:09:53,827 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 358 transitions. [2020-11-07 02:09:53,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-11-07 02:09:53,842 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:09:53,843 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:09:53,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 02:09:53,844 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:09:53,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:09:53,846 INFO L82 PathProgramCache]: Analyzing trace with hash -94353940, now seen corresponding path program 2 times [2020-11-07 02:09:53,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:09:53,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159073230] [2020-11-07 02:09:53,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:09:53,963 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-07 02:09:53,964 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts