/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/structure_assignment.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:34:38,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:34:38,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:34:38,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:34:38,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:34:38,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:34:38,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:34:38,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:34:38,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:34:38,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:34:38,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:34:38,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:34:38,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:34:38,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:34:38,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:34:38,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:34:38,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:34:38,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:34:38,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:34:38,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:34:38,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:34:38,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:34:38,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:34:38,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:34:38,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:34:38,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:34:38,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:34:38,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:34:38,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:34:38,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:34:38,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:34:38,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:34:38,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:34:38,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:34:38,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:34:38,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:34:38,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:34:38,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:34:38,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:34:38,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:34:38,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:34:38,758 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 [2020-09-25 14:34:38,805 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:34:38,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:34:38,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:34:38,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:34:38,808 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:34:38,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:34:38,809 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:34:38,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:34:38,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:34:38,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:34:38,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:34:38,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:34:38,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:34:38,811 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:34:38,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:34:38,812 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:34:38,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:34:38,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:34:38,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:34:38,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:34:38,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:34:38,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:34:38,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:34:38,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:34:38,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:34:38,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:34:38,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:34:38,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:34:38,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:34:38,815 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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:34:39,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:34:39,314 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:34:39,318 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:34:39,320 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:34:39,321 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:34:39,322 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/structure_assignment.i [2020-09-25 14:34:39,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ada30abc/ea5cdb9812af4c85abac137caab31ee8/FLAG72ceb133f [2020-09-25 14:34:39,941 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:34:39,942 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/structure_assignment.i [2020-09-25 14:34:39,951 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ada30abc/ea5cdb9812af4c85abac137caab31ee8/FLAG72ceb133f [2020-09-25 14:34:40,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ada30abc/ea5cdb9812af4c85abac137caab31ee8 [2020-09-25 14:34:40,315 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:34:40,321 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:34:40,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:34:40,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:34:40,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:34:40,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:34:40" (1/1) ... [2020-09-25 14:34:40,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243023c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:40, skipping insertion in model container [2020-09-25 14:34:40,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:34:40" (1/1) ... [2020-09-25 14:34:40,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:34:40,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:34:40,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:34:40,618 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:34:40,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:34:40,666 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:34:40,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:40 WrapperNode [2020-09-25 14:34:40,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:34:40,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:34:40,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:34:40,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:34:40,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:40" (1/1) ... [2020-09-25 14:34:40,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:40" (1/1) ... [2020-09-25 14:34:40,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:40" (1/1) ... [2020-09-25 14:34:40,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:40" (1/1) ... [2020-09-25 14:34:40,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:40" (1/1) ... [2020-09-25 14:34:40,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:40" (1/1) ... [2020-09-25 14:34:40,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:40" (1/1) ... [2020-09-25 14:34:40,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:34:40,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:34:40,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:34:40,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:34:40,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:40" (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 [2020-09-25 14:34:40,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:34:40,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:34:40,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-25 14:34:40,863 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:34:40,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:34:40,863 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-25 14:34:40,863 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:34:40,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 14:34:40,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 14:34:40,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 14:34:40,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 14:34:40,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 14:34:40,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:34:40,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:34:41,110 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:34:41,110 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 14:34:41,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:34:41 BoogieIcfgContainer [2020-09-25 14:34:41,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:34:41,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:34:41,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:34:41,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:34:41,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:34:40" (1/3) ... [2020-09-25 14:34:41,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e417632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:34:41, skipping insertion in model container [2020-09-25 14:34:41,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:40" (2/3) ... [2020-09-25 14:34:41,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e417632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:34:41, skipping insertion in model container [2020-09-25 14:34:41,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:34:41" (3/3) ... [2020-09-25 14:34:41,126 INFO L109 eAbstractionObserver]: Analyzing ICFG structure_assignment.i [2020-09-25 14:34:41,139 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:34:41,151 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:34:41,177 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:34:41,234 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:34:41,235 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:34:41,235 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:34:41,236 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:34:41,236 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:34:41,236 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:34:41,236 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:34:41,236 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:34:41,264 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-25 14:34:41,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 14:34:41,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:41,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:41,272 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:41,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:41,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1759541196, now seen corresponding path program 1 times [2020-09-25 14:34:41,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:41,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260766478] [2020-09-25 14:34:41,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:41,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:41,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:41,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 14:34:41,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:41,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-09-25 14:34:41,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:41,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:41,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:34:41,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:34:41,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:34:41,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:34:41,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:41,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:41,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:41,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:34:41,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:41,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:34:41,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:41,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:41,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:41,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:41,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:41,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:34:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:34:41,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260766478] [2020-09-25 14:34:41,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:41,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:34:41,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025217738] [2020-09-25 14:34:42,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:34:42,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:42,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:34:42,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:34:42,027 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 7 states. [2020-09-25 14:34:42,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:42,196 INFO L93 Difference]: Finished difference Result 44 states and 43 transitions. [2020-09-25 14:34:42,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:34:42,199 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-09-25 14:34:42,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:42,208 INFO L225 Difference]: With dead ends: 44 [2020-09-25 14:34:42,208 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 14:34:42,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:34:42,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 14:34:42,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 14:34:42,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 14:34:42,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 14:34:42,246 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-09-25 14:34:42,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:42,247 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 14:34:42,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:34:42,247 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 14:34:42,247 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 14:34:42,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:34:42,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 14:34:42,292 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 14:34:42,293 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 14:34:42,293 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 14:34:42,293 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-25 14:34:42,293 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 14:34:42,294 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-09-25 14:34:42,294 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 7 10) no Hoare annotation was computed. [2020-09-25 14:34:42,294 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 7 10) no Hoare annotation was computed. [2020-09-25 14:34:42,294 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 7 10) the Hoare annotation is: true [2020-09-25 14:34:42,294 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 14:34:42,295 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 14:34:42,295 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 14:34:42,295 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 14:34:42,295 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 14:34:42,295 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 19 26) no Hoare annotation was computed. [2020-09-25 14:34:42,296 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 14:34:42,296 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-25 14:34:42,296 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 14:34:42,296 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-25 14:34:42,296 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-25 14:34:42,296 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-25 14:34:42,297 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-25 14:34:42,297 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-25 14:34:42,297 INFO L268 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-09-25 14:34:42,297 INFO L268 CegarLoopResult]: For program point L21-4(line 21) no Hoare annotation was computed. [2020-09-25 14:34:42,297 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 19 26) no Hoare annotation was computed. [2020-09-25 14:34:42,298 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 19 26) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 14:34:42,298 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 14:34:42,298 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-25 14:34:42,298 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 14:34:42,298 INFO L264 CegarLoopResult]: At program point L24-3(line 24) the Hoare annotation is: false [2020-09-25 14:34:42,299 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-25 14:34:42,299 INFO L268 CegarLoopResult]: For program point L24-4(line 24) no Hoare annotation was computed. [2020-09-25 14:34:42,299 INFO L268 CegarLoopResult]: For program point L22-2(line 22) no Hoare annotation was computed. [2020-09-25 14:34:42,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:34:42 BoogieIcfgContainer [2020-09-25 14:34:42,307 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:34:42,312 INFO L168 Benchmark]: Toolchain (without parser) took 1992.53 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 100.7 MB in the beginning and 107.3 MB in the end (delta: -6.6 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:42,313 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 14:34:42,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.35 ms. Allocated memory is still 138.4 MB. Free memory was 100.1 MB in the beginning and 90.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:42,315 INFO L168 Benchmark]: Boogie Preprocessor took 115.87 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 90.3 MB in the beginning and 178.2 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:42,316 INFO L168 Benchmark]: RCFGBuilder took 331.67 ms. Allocated memory is still 200.3 MB. Free memory was 178.2 MB in the beginning and 164.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:42,317 INFO L168 Benchmark]: TraceAbstraction took 1190.69 ms. Allocated memory is still 200.3 MB. Free memory was 163.5 MB in the beginning and 107.3 MB in the end (delta: 56.2 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:42,321 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 342.35 ms. Allocated memory is still 138.4 MB. Free memory was 100.1 MB in the beginning and 90.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.87 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 90.3 MB in the beginning and 178.2 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 331.67 ms. Allocated memory is still 200.3 MB. Free memory was 178.2 MB in the beginning and 164.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1190.69 ms. Allocated memory is still 200.3 MB. Free memory was 163.5 MB in the beginning and 107.3 MB in the end (delta: 56.2 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 11 SDslu, 67 SDs, 0 SdLazy, 59 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 17 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 1660 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...