/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/array-fpi/s3iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:20:23,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:20:23,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:20:23,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 02:20:23,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 02:20:23,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 02:20:23,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 02:20:23,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 02:20:23,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 02:20:23,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 02:20:23,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 02:20:23,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 02:20:23,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:20:23,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:20:23,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:20:23,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:20:23,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:20:23,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:20:23,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:20:23,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:20:23,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:20:23,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:20:23,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:20:23,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:20:23,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 02:20:23,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 02:20:23,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 02:20:23,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 02:20:23,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 02:20:23,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 02:20:23,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 02:20:23,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 02:20:23,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 02:20:23,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 02:20:23,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 02:20:23,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 02:20:23,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 02:20:23,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 02:20:23,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:20:23,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:20:23,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:20:23,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:20:23,319 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:20:23,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:20:23,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:20:23,324 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:20:23,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:20:23,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:20:23,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:20:23,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:20:23,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:20:23,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:20:23,327 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:20:23,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:20:23,327 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:20:23,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:20:23,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:20:23,328 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:20:23,328 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:20:23,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:20:23,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:20:23,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:20:23,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:20:23,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:20:23,330 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:20:23,330 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:20:23,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:20:23,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:20:23,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:20:23,773 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:20:23,773 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:20:23,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s3iff.c [2021-02-22 02:20:23,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67fb8c421/bb25c06864c446cab1f383e20ab3f1fb/FLAGb0a8cce31 [2021-02-22 02:20:24,548 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:20:24,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s3iff.c [2021-02-22 02:20:24,556 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67fb8c421/bb25c06864c446cab1f383e20ab3f1fb/FLAGb0a8cce31 [2021-02-22 02:20:24,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67fb8c421/bb25c06864c446cab1f383e20ab3f1fb [2021-02-22 02:20:24,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:20:24,924 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:20:24,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:24,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:20:24,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:20:24,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:24" (1/1) ... [2021-02-22 02:20:24,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50cb45e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:24, skipping insertion in model container [2021-02-22 02:20:24,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:24" (1/1) ... [2021-02-22 02:20:24,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:20:24,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:20:25,113 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s3iff.c[588,601] [2021-02-22 02:20:25,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:25,158 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:20:25,174 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s3iff.c[588,601] [2021-02-22 02:20:25,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:25,230 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:20:25,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:25 WrapperNode [2021-02-22 02:20:25,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:25,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:20:25,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:20:25,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:20:25,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:25" (1/1) ... [2021-02-22 02:20:25,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:25" (1/1) ... [2021-02-22 02:20:25,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:25" (1/1) ... [2021-02-22 02:20:25,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:25" (1/1) ... [2021-02-22 02:20:25,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:25" (1/1) ... [2021-02-22 02:20:25,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:25" (1/1) ... [2021-02-22 02:20:25,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:25" (1/1) ... [2021-02-22 02:20:25,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:20:25,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:20:25,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:20:25,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:20:25,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:25" (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 [2021-02-22 02:20:25,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:20:25,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:20:25,432 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:20:25,433 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:20:25,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:20:25,433 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:20:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:20:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:20:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:20:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:20:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:20:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:20:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:20:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 02:20:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:20:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 02:20:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:20:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:20:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:20:25,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:20:25,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:20:25,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:20:25,849 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:20:25,850 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-22 02:20:25,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:25 BoogieIcfgContainer [2021-02-22 02:20:25,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:20:25,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:20:25,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:20:25,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:20:25,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:20:24" (1/3) ... [2021-02-22 02:20:25,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e70bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:25, skipping insertion in model container [2021-02-22 02:20:25,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:25" (2/3) ... [2021-02-22 02:20:25,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e70bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:25, skipping insertion in model container [2021-02-22 02:20:25,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:25" (3/3) ... [2021-02-22 02:20:25,862 INFO L111 eAbstractionObserver]: Analyzing ICFG s3iff.c [2021-02-22 02:20:25,869 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:20:25,874 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:20:25,894 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:20:25,920 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:20:25,920 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:20:25,921 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:20:25,921 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:20:25,921 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:20:25,921 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:20:25,921 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:20:25,922 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:20:25,938 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2021-02-22 02:20:25,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-22 02:20:25,948 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:25,949 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] [2021-02-22 02:20:25,949 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:25,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:25,956 INFO L82 PathProgramCache]: Analyzing trace with hash 137751759, now seen corresponding path program 1 times [2021-02-22 02:20:25,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:25,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026383498] [2021-02-22 02:20:25,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:26,048 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:26,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:26,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:26,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:26,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:26,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:26,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:26,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:26,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-22 02:20:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:26,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:26,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:20:26,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026383498] [2021-02-22 02:20:26,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:26,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 02:20:26,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217673429] [2021-02-22 02:20:26,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 02:20:26,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:26,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 02:20:26,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:20:26,360 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 3 states. [2021-02-22 02:20:26,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:26,661 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2021-02-22 02:20:26,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 02:20:26,663 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2021-02-22 02:20:26,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:26,671 INFO L225 Difference]: With dead ends: 119 [2021-02-22 02:20:26,671 INFO L226 Difference]: Without dead ends: 58 [2021-02-22 02:20:26,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:20:26,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-22 02:20:26,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-02-22 02:20:26,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-02-22 02:20:26,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2021-02-22 02:20:26,726 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 36 [2021-02-22 02:20:26,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:26,726 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2021-02-22 02:20:26,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 02:20:26,726 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2021-02-22 02:20:26,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-22 02:20:26,728 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:26,728 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] [2021-02-22 02:20:26,729 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:20:26,729 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:26,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:26,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1632327928, now seen corresponding path program 1 times [2021-02-22 02:20:26,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:26,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986889610] [2021-02-22 02:20:26,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:26,735 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:26,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:26,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:26,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:26,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:20:26,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:26,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:20:26,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:26,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:26,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:26,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:26,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:26,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-22 02:20:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:26,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:26,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:20:26,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986889610] [2021-02-22 02:20:26,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:26,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 02:20:26,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307109159] [2021-02-22 02:20:26,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 02:20:26,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:26,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 02:20:26,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:20:26,980 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 5 states. [2021-02-22 02:20:27,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:27,353 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2021-02-22 02:20:27,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 02:20:27,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2021-02-22 02:20:27,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:27,356 INFO L225 Difference]: With dead ends: 104 [2021-02-22 02:20:27,357 INFO L226 Difference]: Without dead ends: 79 [2021-02-22 02:20:27,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:20:27,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-02-22 02:20:27,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 60. [2021-02-22 02:20:27,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-22 02:20:27,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2021-02-22 02:20:27,374 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 36 [2021-02-22 02:20:27,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:27,374 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2021-02-22 02:20:27,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 02:20:27,374 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2021-02-22 02:20:27,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-22 02:20:27,376 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:27,376 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] [2021-02-22 02:20:27,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:20:27,377 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:27,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:27,377 INFO L82 PathProgramCache]: Analyzing trace with hash -881259695, now seen corresponding path program 1 times [2021-02-22 02:20:27,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:27,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819299988] [2021-02-22 02:20:27,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:27,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:27,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:20:27,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:27,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:20:27,432 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-22 02:20:27,446 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-22 02:20:27,452 WARN L141 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-02-22 02:20:27,454 WARN L147 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size 30 [2021-02-22 02:20:27,455 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:20:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:27,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:27,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:27,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:27,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:20:27,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:27,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 02:20:27,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:27,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 02:20:27,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:27,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 02:20:27,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:27,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-22 02:20:27,689 WARN L141 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size [2021-02-22 02:20:27,691 WARN L147 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size 16 [2021-02-22 02:20:27,711 WARN L141 QuantifierPusher]: treesize reduction 6, result has 81.8 percent of original size [2021-02-22 02:20:27,715 WARN L147 QuantifierPusher]: treesize reduction 6, result has 81.8 percent of original size 27 [2021-02-22 02:20:27,749 WARN L141 QuantifierPusher]: treesize reduction 6, result has 81.8 percent of original size [2021-02-22 02:20:27,750 WARN L147 QuantifierPusher]: treesize reduction 6, result has 81.8 percent of original size 27 [2021-02-22 02:20:27,790 WARN L141 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-02-22 02:20:27,793 WARN L147 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size 29 [2021-02-22 02:20:27,851 WARN L141 QuantifierPusher]: treesize reduction 55, result has 36.8 percent of original size [2021-02-22 02:20:27,856 WARN L147 QuantifierPusher]: treesize reduction 55, result has 36.8 percent of original size 32 [2021-02-22 02:20:27,912 WARN L141 QuantifierPusher]: treesize reduction 15, result has 53.1 percent of original size [2021-02-22 02:20:27,916 WARN L147 QuantifierPusher]: treesize reduction 15, result has 53.1 percent of original size 17 [2021-02-22 02:20:27,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:27,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-22 02:20:27,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:27,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-22 02:20:28,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:28,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 02:20:28,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:28,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 02:20:28,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:28,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:20:28,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:28,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:20:28,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:28,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:28,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:28,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:28,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:28,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-22 02:20:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:28,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:28,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:20:28,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:28,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:20:28,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:28,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-22 02:20:28,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-22 02:20:28,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:28,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:20:28,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:28,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-22 02:20:28,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-22 02:20:28,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:28,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:20:28,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:28,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-22 02:20:28,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-02-22 02:20:28,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:28,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:20:28,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:28,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-22 02:20:28,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-02-22 02:20:28,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:28,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:20:28,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:28,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-22 02:20:28,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-02-22 02:20:28,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:28,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:20:28,642 WARN L141 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size [2021-02-22 02:20:28,644 WARN L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-02-22 02:20:28,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-22 02:20:28,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:28,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:28,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819299988] [2021-02-22 02:20:28,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:28,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-02-22 02:20:28,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148441998] [2021-02-22 02:20:28,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-22 02:20:28,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:28,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-22 02:20:28,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=533, Unknown=12, NotChecked=0, Total=650 [2021-02-22 02:20:28,719 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 24 states. [2021-02-22 02:20:30,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:30,207 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2021-02-22 02:20:30,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-22 02:20:30,207 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 53 [2021-02-22 02:20:30,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:30,209 INFO L225 Difference]: With dead ends: 96 [2021-02-22 02:20:30,209 INFO L226 Difference]: Without dead ends: 90 [2021-02-22 02:20:30,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=203, Invalid=1187, Unknown=16, NotChecked=0, Total=1406 [2021-02-22 02:20:30,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-02-22 02:20:30,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 78. [2021-02-22 02:20:30,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-22 02:20:30,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2021-02-22 02:20:30,231 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 53 [2021-02-22 02:20:30,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:30,232 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2021-02-22 02:20:30,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-22 02:20:30,232 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2021-02-22 02:20:30,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-22 02:20:30,234 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:30,234 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] [2021-02-22 02:20:30,234 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 02:20:30,235 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:30,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:30,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1326966967, now seen corresponding path program 1 times [2021-02-22 02:20:30,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:30,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555121337] [2021-02-22 02:20:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:30,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:30,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:20:30,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:30,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:20:30,249 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-22 02:20:30,251 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-22 02:20:30,254 WARN L141 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-02-22 02:20:30,256 WARN L147 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size 30 [2021-02-22 02:20:30,256 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:20:30,290 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-22 02:20:30,290 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:20:30,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 02:20:30,317 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-22 02:20:30,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:20:30 BoogieIcfgContainer [2021-02-22 02:20:30,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:20:30,321 INFO L168 Benchmark]: Toolchain (without parser) took 5408.82 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 131.9 MB in the beginning and 81.3 MB in the end (delta: 50.6 MB). Peak memory consumption was 82.3 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:30,321 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 155.2 MB. Free memory is still 129.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:20:30,325 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.96 ms. Allocated memory is still 155.2 MB. Free memory was 130.7 MB in the beginning and 120.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:30,326 INFO L168 Benchmark]: Boogie Preprocessor took 75.28 ms. Allocated memory is still 155.2 MB. Free memory was 120.9 MB in the beginning and 119.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:30,326 INFO L168 Benchmark]: RCFGBuilder took 543.71 ms. Allocated memory is still 155.2 MB. Free memory was 119.2 MB in the beginning and 131.5 MB in the end (delta: -12.3 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:30,328 INFO L168 Benchmark]: TraceAbstraction took 4463.39 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 131.0 MB in the beginning and 81.3 MB in the end (delta: 49.6 MB). Peak memory consumption was 80.6 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:30,337 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 155.2 MB. Free memory is still 129.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 302.96 ms. Allocated memory is still 155.2 MB. Free memory was 130.7 MB in the beginning and 120.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 75.28 ms. Allocated memory is still 155.2 MB. Free memory was 120.9 MB in the beginning and 119.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 543.71 ms. Allocated memory is still 155.2 MB. Free memory was 119.2 MB in the beginning and 131.5 MB in the end (delta: -12.3 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4463.39 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 131.0 MB in the beginning and 81.3 MB in the end (delta: 49.6 MB). Peak memory consumption was 80.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i