/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-fpi/s52if.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:18:43,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:18:43,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:18:43,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:18:43,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:18:43,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:18:43,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:18:43,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:18:43,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:18:43,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:18:43,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:18:43,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:18:43,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:18:43,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:18:43,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:18:43,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:18:43,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:18:43,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:18:43,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:18:43,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:18:43,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:18:43,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:18:43,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:18:43,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:18:43,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:18:43,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:18:43,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:18:43,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:18:43,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:18:43,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:18:43,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:18:43,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:18:43,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:18:43,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:18:43,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:18:43,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:18:43,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:18:43,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:18:43,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:18:43,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:18:43,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:18:43,851 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 09:18:43,879 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:18:43,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:18:43,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:18:43,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:18:43,882 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:18:43,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:18:43,882 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:18:43,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:18:43,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:18:43,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:18:43,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:18:43,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:18:43,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:18:43,884 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:18:43,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:18:43,884 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:18:43,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:18:43,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:18:43,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:18:43,885 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:18:43,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:18:43,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:18:43,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:18:43,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:18:43,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:18:43,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:18:43,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:18:43,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:18:43,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:18:43,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:18:44,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:18:44,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:18:44,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:18:44,337 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:18:44,339 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:18:44,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s52if.c [2020-10-28 09:18:44,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47f307bf1/7eeb7533c88948f88dfba1d0d57253a1/FLAG9e97d5e2e [2020-10-28 09:18:44,965 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:18:44,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s52if.c [2020-10-28 09:18:44,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47f307bf1/7eeb7533c88948f88dfba1d0d57253a1/FLAG9e97d5e2e [2020-10-28 09:18:45,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47f307bf1/7eeb7533c88948f88dfba1d0d57253a1 [2020-10-28 09:18:45,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:18:45,319 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:18:45,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:18:45,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:18:45,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:18:45,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:18:45" (1/1) ... [2020-10-28 09:18:45,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@451334bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:45, skipping insertion in model container [2020-10-28 09:18:45,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:18:45" (1/1) ... [2020-10-28 09:18:45,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:18:45,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:18:45,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:18:45,555 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:18:45,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:18:45,595 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:18:45,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:45 WrapperNode [2020-10-28 09:18:45,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:18:45,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:18:45,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:18:45,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:18:45,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:45" (1/1) ... [2020-10-28 09:18:45,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:45" (1/1) ... [2020-10-28 09:18:45,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:45" (1/1) ... [2020-10-28 09:18:45,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:45" (1/1) ... [2020-10-28 09:18:45,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:45" (1/1) ... [2020-10-28 09:18:45,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:45" (1/1) ... [2020-10-28 09:18:45,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:45" (1/1) ... [2020-10-28 09:18:45,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:18:45,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:18:45,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:18:45,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:18:45,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:45" (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 09:18:45,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:18:45,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:18:45,790 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:18:45,790 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 09:18:45,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:18:45,791 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:18:45,792 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:18:45,792 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:18:45,792 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:18:45,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:18:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 09:18:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:18:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 09:18:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 09:18:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:18:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 09:18:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:18:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:18:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:18:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:18:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:18:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:18:46,334 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:18:46,335 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 09:18:46,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:18:46 BoogieIcfgContainer [2020-10-28 09:18:46,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:18:46,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:18:46,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:18:46,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:18:46,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:18:45" (1/3) ... [2020-10-28 09:18:46,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3bc7e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:18:46, skipping insertion in model container [2020-10-28 09:18:46,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:45" (2/3) ... [2020-10-28 09:18:46,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3bc7e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:18:46, skipping insertion in model container [2020-10-28 09:18:46,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:18:46" (3/3) ... [2020-10-28 09:18:46,351 INFO L111 eAbstractionObserver]: Analyzing ICFG s52if.c [2020-10-28 09:18:46,364 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:18:46,370 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:18:46,384 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:18:46,430 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:18:46,430 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:18:46,430 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:18:46,430 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:18:46,430 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:18:46,430 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:18:46,431 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:18:46,431 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:18:46,457 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-28 09:18:46,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 09:18:46,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:18:46,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:18:46,470 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:18:46,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:18:46,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1702539242, now seen corresponding path program 1 times [2020-10-28 09:18:46,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:18:46,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714831363] [2020-10-28 09:18:46,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:18:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:46,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:46,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:46,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:46,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:47,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:47,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 09:18:47,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:18:47,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-28 09:18:47,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:47,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:47,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:18:47,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 09:18:47,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:18:47,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 09:18:47,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:18:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:47,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:47,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:47,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:18:47,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:18:47,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 09:18:47,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:47,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:18:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:18:47,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:18:47,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:18:47,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:18:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:47,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:47,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:47,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:47,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:18:47,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:18:47,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:18:47,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:47,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:47,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:18:47,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:18:47,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:18:47,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:18:47,383 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 09:18:47,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714831363] [2020-10-28 09:18:47,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:18:47,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:18:47,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161612578] [2020-10-28 09:18:47,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:18:47,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:18:47,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:18:47,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:18:47,422 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-10-28 09:18:47,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:18:47,580 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2020-10-28 09:18:47,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:18:47,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-28 09:18:47,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:18:47,591 INFO L225 Difference]: With dead ends: 67 [2020-10-28 09:18:47,591 INFO L226 Difference]: Without dead ends: 30 [2020-10-28 09:18:47,595 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 [2020-10-28 09:18:47,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-28 09:18:47,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-28 09:18:47,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-28 09:18:47,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-28 09:18:47,640 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 24 [2020-10-28 09:18:47,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:18:47,640 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-28 09:18:47,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:18:47,641 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-28 09:18:47,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 09:18:47,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:18:47,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:18:47,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:18:47,643 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:18:47,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:18:47,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1952199574, now seen corresponding path program 1 times [2020-10-28 09:18:47,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:18:47,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972851169] [2020-10-28 09:18:47,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:18:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:47,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:47,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:47,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:48,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:48,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 09:18:48,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:18:48,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-10-28 09:18:48,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:48,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:48,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:18:48,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:18:48,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 09:18:48,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:18:48,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:18:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:48,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:48,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:48,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:18:48,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:18:48,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:18:48,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:48,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:48,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:18:48,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:18:48,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:18:48,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:18:48,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:18:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:48,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:48,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:48,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:18:48,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:18:48,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:18:48,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:48,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:48,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:18:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:18:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:18:48,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:18:48,355 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 09:18:48,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972851169] [2020-10-28 09:18:48,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:18:48,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:18:48,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271737969] [2020-10-28 09:18:48,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:18:48,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:18:48,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:18:48,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:18:48,360 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-10-28 09:18:48,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:18:48,515 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-10-28 09:18:48,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:18:48,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-28 09:18:48,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:18:48,517 INFO L225 Difference]: With dead ends: 48 [2020-10-28 09:18:48,517 INFO L226 Difference]: Without dead ends: 33 [2020-10-28 09:18:48,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:18:48,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-28 09:18:48,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-28 09:18:48,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-28 09:18:48,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-28 09:18:48,528 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2020-10-28 09:18:48,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:18:48,529 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-28 09:18:48,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:18:48,529 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-28 09:18:48,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 09:18:48,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:18:48,531 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] [2020-10-28 09:18:48,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:18:48,531 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:18:48,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:18:48,532 INFO L82 PathProgramCache]: Analyzing trace with hash -856996485, now seen corresponding path program 1 times [2020-10-28 09:18:48,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:18:48,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338394242] [2020-10-28 09:18:48,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:18:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:48,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:48,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:48,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:48,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:49,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:49,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:49,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:50,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:50,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:53,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:53,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 09:18:53,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 09:18:53,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 09:18:53,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:53,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:53,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:18:53,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 09:18:53,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 09:18:53,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:18:53,997 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-10-28 09:18:54,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:18:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:54,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:54,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:54,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:18:54,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:18:54,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:18:54,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:54,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:54,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:18:54,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:18:54,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:18:54,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:18:54,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:18:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:54,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:54,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:54,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:18:54,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:18:54,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:18:54,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:54,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:18:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:18:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:18:54,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:18:54,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:18:54,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338394242] [2020-10-28 09:18:54,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:18:54,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:18:54,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167465361] [2020-10-28 09:18:54,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:18:54,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:18:54,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:18:54,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:18:54,406 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 14 states. [2020-10-28 09:18:55,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:18:55,290 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-10-28 09:18:55,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 09:18:55,290 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2020-10-28 09:18:55,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:18:55,294 INFO L225 Difference]: With dead ends: 58 [2020-10-28 09:18:55,294 INFO L226 Difference]: Without dead ends: 51 [2020-10-28 09:18:55,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:18:55,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-28 09:18:55,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 40. [2020-10-28 09:18:55,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-28 09:18:55,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2020-10-28 09:18:55,306 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 32 [2020-10-28 09:18:55,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:18:55,307 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2020-10-28 09:18:55,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:18:55,307 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2020-10-28 09:18:55,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 09:18:55,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:18:55,311 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] [2020-10-28 09:18:55,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:18:55,311 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:18:55,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:18:55,312 INFO L82 PathProgramCache]: Analyzing trace with hash -176938115, now seen corresponding path program 1 times [2020-10-28 09:18:55,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:18:55,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48834156] [2020-10-28 09:18:55,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:18:55,330 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-28 09:18:55,330 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-28 09:18:55,330 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 09:18:55,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:18:55,358 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-28 09:18:55,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:18:55 BoogieIcfgContainer [2020-10-28 09:18:55,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 09:18:55,362 INFO L168 Benchmark]: Toolchain (without parser) took 10047.47 ms. Allocated memory was 157.3 MB in the beginning and 272.6 MB in the end (delta: 115.3 MB). Free memory was 138.8 MB in the beginning and 201.5 MB in the end (delta: -62.7 MB). Peak memory consumption was 51.9 MB. Max. memory is 8.0 GB. [2020-10-28 09:18:55,364 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 157.3 MB. Free memory was 130.2 MB in the beginning and 130.1 MB in the end (delta: 135.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:18:55,365 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.33 ms. Allocated memory is still 157.3 MB. Free memory was 138.1 MB in the beginning and 128.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-28 09:18:55,367 INFO L168 Benchmark]: Boogie Preprocessor took 79.64 ms. Allocated memory is still 157.3 MB. Free memory was 128.2 MB in the beginning and 140.6 MB in the end (delta: -12.4 MB). Peak memory consumption was 3.8 MB. Max. memory is 8.0 GB. [2020-10-28 09:18:55,368 INFO L168 Benchmark]: RCFGBuilder took 659.51 ms. Allocated memory is still 157.3 MB. Free memory was 140.6 MB in the beginning and 122.3 MB in the end (delta: 18.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-10-28 09:18:55,375 INFO L168 Benchmark]: TraceAbstraction took 9017.58 ms. Allocated memory was 157.3 MB in the beginning and 272.6 MB in the end (delta: 115.3 MB). Free memory was 121.8 MB in the beginning and 201.5 MB in the end (delta: -79.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 8.0 GB. [2020-10-28 09:18:55,384 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 157.3 MB. Free memory was 130.2 MB in the beginning and 130.1 MB in the end (delta: 135.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 276.33 ms. Allocated memory is still 157.3 MB. Free memory was 138.1 MB in the beginning and 128.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 79.64 ms. Allocated memory is still 157.3 MB. Free memory was 128.2 MB in the beginning and 140.6 MB in the end (delta: -12.4 MB). Peak memory consumption was 3.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 659.51 ms. Allocated memory is still 157.3 MB. Free memory was 140.6 MB in the beginning and 122.3 MB in the end (delta: 18.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 9017.58 ms. Allocated memory was 157.3 MB in the beginning and 272.6 MB in the end (delta: 115.3 MB). Free memory was 121.8 MB in the beginning and 201.5 MB in the end (delta: -79.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: 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: [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] = 0 [L32] i=0 [L32] COND TRUE i