/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 --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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-patterns/array6_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:27:29,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:27:29,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:27:29,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:27:29,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:27:29,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:27:29,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:27:29,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:27:29,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:27:29,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:27:29,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:27:29,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:27:29,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:27:29,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:27:29,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:27:29,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:27:29,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:27:29,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:27:29,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:27:29,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:27:29,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:27:29,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:27:29,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:27:29,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:27:29,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:27:29,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:27:29,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:27:29,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:27:29,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:27:29,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:27:29,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:27:29,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:27:29,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:27:29,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:27:29,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:27:29,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:27:29,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:27:29,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:27:29,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:27:29,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:27:29,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:27:29,259 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 [2020-10-28 09:27:29,313 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:27:29,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:27:29,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:27:29,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:27:29,320 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:27:29,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:27:29,321 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:27:29,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:27:29,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:27:29,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:27:29,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:27:29,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:27:29,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:27:29,324 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:27:29,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:27:29,324 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:27:29,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:27:29,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:27:29,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:27:29,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:27:29,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:27:29,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:27:29,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:27:29,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:27:29,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:27:29,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:27:29,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:27:29,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:27:29,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:27:29,327 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:27:29,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:27:29,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:27:29,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:27:29,798 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:27:29,798 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:27:29,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array6_pattern.c [2020-10-28 09:27:29,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60de4622e/65f0dd0e10ec4ebcb5f0eafd955d7a6a/FLAGe4352277d [2020-10-28 09:27:30,625 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:27:30,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-patterns/array6_pattern.c [2020-10-28 09:27:30,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60de4622e/65f0dd0e10ec4ebcb5f0eafd955d7a6a/FLAGe4352277d [2020-10-28 09:27:30,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60de4622e/65f0dd0e10ec4ebcb5f0eafd955d7a6a [2020-10-28 09:27:30,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:27:30,997 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:27:30,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:27:30,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:27:31,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:27:31,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:27:30" (1/1) ... [2020-10-28 09:27:31,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26fd647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:31, skipping insertion in model container [2020-10-28 09:27:31,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:27:30" (1/1) ... [2020-10-28 09:27:31,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:27:31,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:27:31,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:27:31,226 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:27:31,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:27:31,268 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:27:31,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:31 WrapperNode [2020-10-28 09:27:31,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:27:31,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:27:31,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:27:31,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:27:31,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:31" (1/1) ... [2020-10-28 09:27:31,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:31" (1/1) ... [2020-10-28 09:27:31,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:31" (1/1) ... [2020-10-28 09:27:31,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:31" (1/1) ... [2020-10-28 09:27:31,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:31" (1/1) ... [2020-10-28 09:27:31,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:31" (1/1) ... [2020-10-28 09:27:31,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:31" (1/1) ... [2020-10-28 09:27:31,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:27:31,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:27:31,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:27:31,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:27:31,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:31" (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 [2020-10-28 09:27:31,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:27:31,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:27:31,411 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:27:31,411 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 09:27:31,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:27:31,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:27:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:27:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:27:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:27:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:27:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 09:27:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:27:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 09:27:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2020-10-28 09:27:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:27:31,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:27:31,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:27:31,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:27:31,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:27:31,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:27:31,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:27:31,799 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:27:31,799 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 09:27:31,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:27:31 BoogieIcfgContainer [2020-10-28 09:27:31,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:27:31,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:27:31,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:27:31,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:27:31,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:27:30" (1/3) ... [2020-10-28 09:27:31,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c289bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:27:31, skipping insertion in model container [2020-10-28 09:27:31,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:31" (2/3) ... [2020-10-28 09:27:31,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c289bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:27:31, skipping insertion in model container [2020-10-28 09:27:31,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:27:31" (3/3) ... [2020-10-28 09:27:31,815 INFO L111 eAbstractionObserver]: Analyzing ICFG array6_pattern.c [2020-10-28 09:27:31,830 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:27:31,836 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:27:31,865 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:27:31,922 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:27:31,922 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:27:31,922 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:27:31,922 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:27:31,923 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:27:31,923 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:27:31,923 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:27:31,923 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:27:31,946 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-28 09:27:31,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 09:27:31,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:31,955 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] [2020-10-28 09:27:31,956 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:31,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:31,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1471950301, now seen corresponding path program 1 times [2020-10-28 09:27:31,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:31,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439340444] [2020-10-28 09:27:31,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:32,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:32,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:32,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:32,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:32,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 09:27:32,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:27:32,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 670 [2020-10-28 09:27:32,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:32,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:32,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:32,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 09:27:32,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:32,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 09:27:32,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:27:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:33,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:33,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:33,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:27:33,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:33,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 09:27:33,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:33,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:33,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:33,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:27:33,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:33,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:27:33,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:27:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:33,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:33,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:33,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:27:33,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:33,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:27:33,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:33,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:33,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:33,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 09:27:33,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:33,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:27:33,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:27:33,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439340444] [2020-10-28 09:27:33,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:27:33,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:27:33,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123949552] [2020-10-28 09:27:33,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:27:33,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:27:33,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:27:33,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:27:33,100 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-28 09:27:33,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:27:33,231 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2020-10-28 09:27:33,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:27:33,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-28 09:27:33,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:27:33,243 INFO L225 Difference]: With dead ends: 64 [2020-10-28 09:27:33,243 INFO L226 Difference]: Without dead ends: 27 [2020-10-28 09:27:33,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:27:33,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-28 09:27:33,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-28 09:27:33,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-28 09:27:33,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-28 09:27:33,297 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2020-10-28 09:27:33,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:27:33,298 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-28 09:27:33,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:27:33,299 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-28 09:27:33,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 09:27:33,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:33,301 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 09:27:33,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:27:33,302 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:33,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:33,303 INFO L82 PathProgramCache]: Analyzing trace with hash 657650866, now seen corresponding path program 1 times [2020-10-28 09:27:33,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:33,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255741868] [2020-10-28 09:27:33,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:33,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:33,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:33,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:34,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:34,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:36,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:36,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 09:27:36,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:27:36,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2837 [2020-10-28 09:27:36,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:36,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:36,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:27:36,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:27:36,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 09:27:36,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:36,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:27:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:36,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:36,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:36,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:27:36,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:36,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:27:36,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:36,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:36,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:36,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:27:36,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:36,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:27:36,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:27:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:36,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:36,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:36,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:27:36,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:36,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:27:36,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:36,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:36,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:27:36,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:27:36,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:27:36,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:27:36,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 09:27:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:36,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:36,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:36,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:36,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:27:36,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:27:36,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 09:27:36,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:36,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:36,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:27:36,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:27:36,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:27:36,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:27:36,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 09:27:36,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255741868] [2020-10-28 09:27:36,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:27:36,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 09:27:36,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051057545] [2020-10-28 09:27:36,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:27:36,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:27:36,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:27:36,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:27:36,316 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 7 states. [2020-10-28 09:27:36,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:27:36,722 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2020-10-28 09:27:36,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:27:36,722 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-28 09:27:36,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:27:36,724 INFO L225 Difference]: With dead ends: 50 [2020-10-28 09:27:36,724 INFO L226 Difference]: Without dead ends: 33 [2020-10-28 09:27:36,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:27:36,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-28 09:27:36,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-28 09:27:36,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-28 09:27:36,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-10-28 09:27:36,736 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 28 [2020-10-28 09:27:36,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:27:36,736 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-10-28 09:27:36,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:27:36,736 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-10-28 09:27:36,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 09:27:36,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:36,738 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 09:27:36,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:27:36,738 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:36,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:36,739 INFO L82 PathProgramCache]: Analyzing trace with hash 454455094, now seen corresponding path program 1 times [2020-10-28 09:27:36,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:36,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942882648] [2020-10-28 09:27:36,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:36,759 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-28 09:27:36,759 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-28 09:27:36,760 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 09:27:36,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:27:36,786 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-28 09:27:36,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:27:36 BoogieIcfgContainer [2020-10-28 09:27:36,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 09:27:36,792 INFO L168 Benchmark]: Toolchain (without parser) took 5796.54 ms. Allocated memory was 151.0 MB in the beginning and 195.0 MB in the end (delta: 44.0 MB). Free memory was 125.7 MB in the beginning and 70.4 MB in the end (delta: 55.3 MB). Peak memory consumption was 100.9 MB. Max. memory is 8.0 GB. [2020-10-28 09:27:36,794 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 122.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:27:36,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.46 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 115.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-28 09:27:36,798 INFO L168 Benchmark]: Boogie Preprocessor took 44.57 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 113.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 09:27:36,799 INFO L168 Benchmark]: RCFGBuilder took 486.60 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 130.9 MB in the end (delta: -17.5 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2020-10-28 09:27:36,802 INFO L168 Benchmark]: TraceAbstraction took 4982.70 ms. Allocated memory was 151.0 MB in the beginning and 195.0 MB in the end (delta: 44.0 MB). Free memory was 130.4 MB in the beginning and 70.4 MB in the end (delta: 60.0 MB). Peak memory consumption was 104.6 MB. Max. memory is 8.0 GB. [2020-10-28 09:27:36,811 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 122.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 270.46 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 115.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.57 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 113.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 486.60 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 130.9 MB in the end (delta: -17.5 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4982.70 ms. Allocated memory was 151.0 MB in the beginning and 195.0 MB in the end (delta: 44.0 MB). Free memory was 130.4 MB in the beginning and 70.4 MB in the end (delta: 60.0 MB). Peak memory consumption was 104.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 28]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L37] signed long long ARR_SIZE ; [L41] ARR_SIZE = (signed long long)__VERIFIER_nondet_short() [L42] CALL assume_abort_if_not(ARR_SIZE > 0) [L31] COND FALSE !(!cond) [L42] RET assume_abort_if_not(ARR_SIZE > 0) [L44] int array1[ARR_SIZE] ; [L45] int array2[ARR_SIZE] ; [L46] int count = 0, num = -1 ; [L47] signed long long sum = 0 ; [L48] int temp ; [L49] short index ; [L51] count=0 [L51] COND TRUE count 0 && index < ARR_SIZE-1) [L31] COND FALSE !(!cond) [L61] RET assume_abort_if_not(index > 0 && index < ARR_SIZE-1) [L63] EXPR array1[index-1] [L63] EXPR array1[index+1] [L63] array1[index] = array1[index-1] + array1[index+1] [L64] EXPR array2[index-1] [L64] EXPR array2[index+1] [L64] array2[index] = array2[index-1] + array2[index+1] [L66] temp = __VERIFIER_nondet_int() [L67] COND TRUE temp == 0 [L70] count=0 [L70] COND TRUE count