/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=DEEPEST --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/s2if.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:41:48,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:41:48,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:41:48,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:41:48,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:41:48,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:41:48,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:41:48,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:41:48,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:41:48,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:41:48,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:41:48,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:41:48,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:41:48,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:41:48,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:41:48,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:41:48,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:41:48,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:41:48,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:41:48,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:41:48,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:41:48,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:41:48,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:41:48,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:41:48,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:41:48,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:41:48,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:41:48,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:41:48,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:41:48,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:41:48,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:41:48,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:41:48,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:41:48,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:41:48,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:41:48,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:41:48,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:41:48,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:41:48,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:41:48,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:41:48,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:41:48,284 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 [2020-10-27 14:41:48,337 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:41:48,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:41:48,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:41:48,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:41:48,339 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:41:48,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:41:48,340 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:41:48,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:41:48,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:41:48,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:41:48,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:41:48,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:41:48,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:41:48,341 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:41:48,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:41:48,342 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:41:48,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:41:48,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:41:48,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:41:48,343 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:41:48,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:41:48,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:41:48,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:41:48,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:41:48,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:41:48,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:41:48,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:41:48,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:41:48,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:41:48,345 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:41:48,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:41:48,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:41:48,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:41:48,755 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:41:48,756 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:41:48,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s2if.c [2020-10-27 14:41:48,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/736d5b565/41e93d7a00a846f398f5318c062ad30e/FLAG467b8e9d4 [2020-10-27 14:41:49,407 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:41:49,408 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s2if.c [2020-10-27 14:41:49,415 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/736d5b565/41e93d7a00a846f398f5318c062ad30e/FLAG467b8e9d4 [2020-10-27 14:41:49,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/736d5b565/41e93d7a00a846f398f5318c062ad30e [2020-10-27 14:41:49,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:41:49,800 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:41:49,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:41:49,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:41:49,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:41:49,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:41:49" (1/1) ... [2020-10-27 14:41:49,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a9f139f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:41:49, skipping insertion in model container [2020-10-27 14:41:49,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:41:49" (1/1) ... [2020-10-27 14:41:49,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:41:49,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:41:50,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:41:50,030 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:41:50,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:41:50,076 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:41:50,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:41:50 WrapperNode [2020-10-27 14:41:50,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:41:50,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:41:50,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:41:50,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:41:50,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:41:50" (1/1) ... [2020-10-27 14:41:50,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:41:50" (1/1) ... [2020-10-27 14:41:50,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:41:50" (1/1) ... [2020-10-27 14:41:50,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:41:50" (1/1) ... [2020-10-27 14:41:50,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:41:50" (1/1) ... [2020-10-27 14:41:50,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:41:50" (1/1) ... [2020-10-27 14:41:50,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:41:50" (1/1) ... [2020-10-27 14:41:50,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:41:50,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:41:50,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:41:50,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:41:50,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:41:50" (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 [2020-10-27 14:41:50,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:41:50,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:41:50,225 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:41:50,226 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 14:41:50,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:41:50,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:41:50,228 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:41:50,228 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:41:50,229 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:41:50,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:41:50,230 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 14:41:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:41:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:41:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 14:41:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:41:50,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 14:41:50,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:41:50,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:41:50,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:41:50,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:41:50,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:41:50,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:41:50,825 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:41:50,825 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 14:41:50,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:41:50 BoogieIcfgContainer [2020-10-27 14:41:50,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:41:50,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:41:50,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:41:50,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:41:50,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:41:49" (1/3) ... [2020-10-27 14:41:50,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ddd8a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:41:50, skipping insertion in model container [2020-10-27 14:41:50,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:41:50" (2/3) ... [2020-10-27 14:41:50,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ddd8a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:41:50, skipping insertion in model container [2020-10-27 14:41:50,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:41:50" (3/3) ... [2020-10-27 14:41:50,842 INFO L111 eAbstractionObserver]: Analyzing ICFG s2if.c [2020-10-27 14:41:50,852 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:41:50,858 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:41:50,870 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:41:50,897 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:41:50,897 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:41:50,898 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:41:50,898 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:41:50,898 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:41:50,898 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:41:50,898 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:41:50,898 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:41:50,918 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-27 14:41:50,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 14:41:50,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:41:50,926 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] [2020-10-27 14:41:50,926 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:41:50,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:41:50,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1361575079, now seen corresponding path program 1 times [2020-10-27 14:41:50,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:41:50,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901888345] [2020-10-27 14:41:50,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:41:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:51,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:51,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:51,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:51,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:51,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:41:51,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:41:51,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-10-27 14:41:51,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:51,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:51,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:41:51,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:51,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:41:51,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:41:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:51,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:51,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:51,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:41:51,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:51,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 14:41:51,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:51,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:51,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:51,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:51,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:51,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:41:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:52,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:52,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:52,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:52,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:52,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:41:52,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:41:52,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:52,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:52,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:41:52,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:52,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:41:52,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:41:52,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901888345] [2020-10-27 14:41:52,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:41:52,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:41:52,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740049146] [2020-10-27 14:41:52,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:41:52,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:41:52,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:41:52,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:41:52,061 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-27 14:41:52,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:41:52,226 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-10-27 14:41:52,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:41:52,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-27 14:41:52,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:41:52,242 INFO L225 Difference]: With dead ends: 59 [2020-10-27 14:41:52,242 INFO L226 Difference]: Without dead ends: 26 [2020-10-27 14:41:52,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:41:52,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-27 14:41:52,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-27 14:41:52,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 14:41:52,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-27 14:41:52,320 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 22 [2020-10-27 14:41:52,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:41:52,321 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-27 14:41:52,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:41:52,322 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-27 14:41:52,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 14:41:52,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:41:52,324 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] [2020-10-27 14:41:52,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:41:52,325 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:41:52,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:41:52,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1173980304, now seen corresponding path program 1 times [2020-10-27 14:41:52,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:41:52,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040096744] [2020-10-27 14:41:52,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:41:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:52,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:52,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:52,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:52,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:41:52,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:41:52,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-27 14:41:52,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:52,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:41:52,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:41:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:41:52,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:52,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:41:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:52,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:52,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:52,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:41:52,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:52,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:41:52,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:52,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:52,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:52,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:52,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:52,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:41:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:52,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:52,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:52,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:52,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:52,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:41:52,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:52,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:52,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:52,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:52,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:41:52,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040096744] [2020-10-27 14:41:52,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:41:52,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 14:41:52,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100537746] [2020-10-27 14:41:52,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:41:52,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:41:52,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:41:52,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:41:52,750 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2020-10-27 14:41:52,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:41:52,903 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-27 14:41:52,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:41:52,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-27 14:41:52,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:41:52,906 INFO L225 Difference]: With dead ends: 39 [2020-10-27 14:41:52,906 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 14:41:52,907 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 [2020-10-27 14:41:52,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 14:41:52,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-27 14:41:52,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 14:41:52,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-27 14:41:52,918 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 22 [2020-10-27 14:41:52,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:41:52,918 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-27 14:41:52,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:41:52,918 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-27 14:41:52,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 14:41:52,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:41:52,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:41:52,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:41:52,920 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:41:52,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:41:52,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1619095335, now seen corresponding path program 1 times [2020-10-27 14:41:52,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:41:52,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160569511] [2020-10-27 14:41:52,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:41:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:52,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:53,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:53,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:54,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:54,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 14:41:54,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:41:54,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1831 [2020-10-27 14:41:54,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:54,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:41:54,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 14:41:54,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 14:41:54,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:55,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:41:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:55,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:55,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:55,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:41:55,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:55,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 14:41:55,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:55,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:55,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:55,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:55,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:55,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:41:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:55,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:55,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:55,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:55,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:55,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:41:55,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:55,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:55,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:55,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:55,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:55,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:41:55,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160569511] [2020-10-27 14:41:55,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:41:55,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:41:55,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852909161] [2020-10-27 14:41:55,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:41:55,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:41:55,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:41:55,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:41:55,103 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 12 states. [2020-10-27 14:41:55,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:41:55,747 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-10-27 14:41:55,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:41:55,748 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-27 14:41:55,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:41:55,751 INFO L225 Difference]: With dead ends: 52 [2020-10-27 14:41:55,752 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 14:41:55,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:41:55,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 14:41:55,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2020-10-27 14:41:55,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-27 14:41:55,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-10-27 14:41:55,764 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 27 [2020-10-27 14:41:55,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:41:55,765 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-10-27 14:41:55,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:41:55,765 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-10-27 14:41:55,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 14:41:55,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:41:55,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:41:55,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:41:55,767 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:41:55,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:41:55,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1995813591, now seen corresponding path program 1 times [2020-10-27 14:41:55,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:41:55,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031072073] [2020-10-27 14:41:55,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:41:55,785 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-27 14:41:55,786 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-27 14:41:55,786 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 14:41:55,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:41:55,808 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-27 14:41:55,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:41:55 BoogieIcfgContainer [2020-10-27 14:41:55,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 14:41:55,812 INFO L168 Benchmark]: Toolchain (without parser) took 6015.32 ms. Allocated memory was 155.2 MB in the beginning and 191.9 MB in the end (delta: 36.7 MB). Free memory was 130.1 MB in the beginning and 117.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 8.0 GB. [2020-10-27 14:41:55,812 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 155.2 MB. Free memory is still 128.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 14:41:55,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.70 ms. Allocated memory is still 155.2 MB. Free memory was 129.5 MB in the beginning and 119.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-27 14:41:55,814 INFO L168 Benchmark]: Boogie Preprocessor took 48.47 ms. Allocated memory is still 155.2 MB. Free memory was 119.6 MB in the beginning and 118.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 14:41:55,815 INFO L168 Benchmark]: RCFGBuilder took 700.23 ms. Allocated memory is still 155.2 MB. Free memory was 118.0 MB in the beginning and 135.3 MB in the end (delta: -17.3 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. [2020-10-27 14:41:55,816 INFO L168 Benchmark]: TraceAbstraction took 4977.57 ms. Allocated memory was 155.2 MB in the beginning and 191.9 MB in the end (delta: 36.7 MB). Free memory was 134.7 MB in the beginning and 117.2 MB in the end (delta: 17.5 MB). Peak memory consumption was 54.3 MB. Max. memory is 8.0 GB. [2020-10-27 14:41:55,820 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 155.2 MB. Free memory is still 128.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 272.70 ms. Allocated memory is still 155.2 MB. Free memory was 129.5 MB in the beginning and 119.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.47 ms. Allocated memory is still 155.2 MB. Free memory was 119.6 MB in the beginning and 118.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 700.23 ms. Allocated memory is still 155.2 MB. Free memory was 118.0 MB in the beginning and 135.3 MB in the end (delta: -17.3 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4977.57 ms. Allocated memory was 155.2 MB in the beginning and 191.9 MB in the end (delta: 36.7 MB). Free memory was 134.7 MB in the beginning and 117.2 MB in the end (delta: 17.5 MB). Peak memory consumption was 54.3 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