/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/sqm-iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:10:00,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:10:00,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:10:00,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:10:00,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:10:00,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:10:00,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:10:00,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:10:00,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:10:00,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:10:00,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:10:00,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:10:00,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:10:00,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:10:00,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:10:00,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:10:00,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:10:00,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:10:00,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:10:00,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:10:00,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:10:00,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:10:00,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:10:00,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:10:00,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:10:00,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:10:00,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:10:00,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:10:00,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:10:00,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:10:00,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:10:00,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:10:00,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:10:00,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:10:00,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:10:00,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:10:00,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:10:00,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:10:00,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:10:00,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:10:00,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:10:00,177 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 [2020-09-24 16:10:00,228 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:10:00,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:10:00,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:10:00,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:10:00,231 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:10:00,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:10:00,232 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:10:00,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:10:00,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:10:00,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:10:00,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:10:00,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:10:00,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:10:00,235 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:10:00,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:10:00,235 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:10:00,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:10:00,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:10:00,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:10:00,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:10:00,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:10:00,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:10:00,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:10:00,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:10:00,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:10:00,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:10:00,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:10:00,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:10:00,238 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:10:00,238 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:10:00,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:10:00,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:10:00,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:10:00,717 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:10:00,718 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:10:00,719 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sqm-iff.c [2020-09-24 16:10:00,813 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b6daddac/afc62251bc51451b8121396960f3df80/FLAG0d48823f5 [2020-09-24 16:10:01,359 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:10:01,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sqm-iff.c [2020-09-24 16:10:01,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b6daddac/afc62251bc51451b8121396960f3df80/FLAG0d48823f5 [2020-09-24 16:10:01,714 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b6daddac/afc62251bc51451b8121396960f3df80 [2020-09-24 16:10:01,728 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:10:01,736 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:10:01,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:10:01,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:10:01,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:10:01,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:10:01" (1/1) ... [2020-09-24 16:10:01,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c5f9fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:01, skipping insertion in model container [2020-09-24 16:10:01,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:10:01" (1/1) ... [2020-09-24 16:10:01,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:10:01,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:10:02,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:10:02,018 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:10:02,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:10:02,064 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:10:02,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:02 WrapperNode [2020-09-24 16:10:02,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:10:02,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:10:02,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:10:02,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:10:02,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:02" (1/1) ... [2020-09-24 16:10:02,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:02" (1/1) ... [2020-09-24 16:10:02,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:02" (1/1) ... [2020-09-24 16:10:02,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:02" (1/1) ... [2020-09-24 16:10:02,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:02" (1/1) ... [2020-09-24 16:10:02,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:02" (1/1) ... [2020-09-24 16:10:02,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:02" (1/1) ... [2020-09-24 16:10:02,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:10:02,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:10:02,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:10:02,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:10:02,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:02" (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 [2020-09-24 16:10:02,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:10:02,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:10:02,292 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 16:10:02,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 16:10:02,292 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:10:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:10:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:10:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 16:10:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 16:10:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:10:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:10:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:10:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:10:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:10:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:10:02,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:10:02,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:10:02,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:10:02,665 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:10:02,665 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 16:10:02,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:10:02 BoogieIcfgContainer [2020-09-24 16:10:02,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:10:02,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:10:02,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:10:02,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:10:02,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:10:01" (1/3) ... [2020-09-24 16:10:02,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474ce2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:10:02, skipping insertion in model container [2020-09-24 16:10:02,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:02" (2/3) ... [2020-09-24 16:10:02,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474ce2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:10:02, skipping insertion in model container [2020-09-24 16:10:02,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:10:02" (3/3) ... [2020-09-24 16:10:02,681 INFO L109 eAbstractionObserver]: Analyzing ICFG sqm-iff.c [2020-09-24 16:10:02,692 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:10:02,702 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:10:02,726 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:10:02,761 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:10:02,762 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:10:02,762 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:10:02,762 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:10:02,762 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:10:02,762 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:10:02,762 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:10:02,763 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:10:02,790 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-24 16:10:02,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 16:10:02,801 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:10:02,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:10:02,803 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:10:02,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:10:02,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1150160147, now seen corresponding path program 1 times [2020-09-24 16:10:02,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:10:02,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258345281] [2020-09-24 16:10:02,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:10:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:03,074 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:03,074 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:03,074 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:03,075 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:03,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 16:10:03,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:03,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 16:10:03,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:03,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:10:03,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:10:03,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 16:10:03,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:10:03,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:10:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:03,246 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:03,246 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:03,247 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:03,247 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:03,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 16:10:03,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:03,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:10:03,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:03,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:10:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:10:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:10:03,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:10:03,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 16:10:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:03,265 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:03,265 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:03,266 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:03,266 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:03,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:10:03,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:03,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:10:03,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:03,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:10:03,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:10:03,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:10:03,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:10:03,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:10:03,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258345281] [2020-09-24 16:10:03,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:10:03,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:10:03,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577354449] [2020-09-24 16:10:03,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:10:03,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:10:03,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:10:03,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:10:03,316 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 5 states. [2020-09-24 16:10:03,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:10:03,599 INFO L93 Difference]: Finished difference Result 120 states and 144 transitions. [2020-09-24 16:10:03,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:10:03,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-09-24 16:10:03,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:10:03,614 INFO L225 Difference]: With dead ends: 120 [2020-09-24 16:10:03,614 INFO L226 Difference]: Without dead ends: 61 [2020-09-24 16:10:03,619 INFO L675 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 [2020-09-24 16:10:03,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-24 16:10:03,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-09-24 16:10:03,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 16:10:03,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-09-24 16:10:03,680 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 33 [2020-09-24 16:10:03,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:10:03,681 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-09-24 16:10:03,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:10:03,681 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-09-24 16:10:03,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 16:10:03,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:10:03,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:10:03,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:10:03,684 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:10:03,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:10:03,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1596799413, now seen corresponding path program 1 times [2020-09-24 16:10:03,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:10:03,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593591785] [2020-09-24 16:10:03,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:10:03,719 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-24 16:10:03,719 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-24 16:10:03,719 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:10:03,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:10:03,748 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-24 16:10:03,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:10:03 BoogieIcfgContainer [2020-09-24 16:10:03,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:10:03,753 INFO L168 Benchmark]: Toolchain (without parser) took 2021.92 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.7 MB in the beginning and 101.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 64.5 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:03,754 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:10:03,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.04 ms. Allocated memory is still 140.0 MB. Free memory was 102.3 MB in the beginning and 91.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:03,757 INFO L168 Benchmark]: Boogie Preprocessor took 133.95 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 91.8 MB in the beginning and 181.1 MB in the end (delta: -89.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:03,758 INFO L168 Benchmark]: RCFGBuilder took 470.27 ms. Allocated memory is still 203.4 MB. Free memory was 181.1 MB in the beginning and 161.2 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:03,759 INFO L168 Benchmark]: TraceAbstraction took 1077.15 ms. Allocated memory is still 203.4 MB. Free memory was 161.2 MB in the beginning and 101.6 MB in the end (delta: 59.5 MB). Peak memory consumption was 59.5 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:03,763 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 329.04 ms. Allocated memory is still 140.0 MB. Free memory was 102.3 MB in the beginning and 91.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.95 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 91.8 MB in the beginning and 181.1 MB in the end (delta: -89.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 470.27 ms. Allocated memory is still 203.4 MB. Free memory was 181.1 MB in the beginning and 161.2 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1077.15 ms. Allocated memory is still 203.4 MB. Free memory was 161.2 MB in the beginning and 101.6 MB in the end (delta: 59.5 MB). Peak memory consumption was 59.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: 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: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] i=0 [L29] COND TRUE i