/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/test28-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:40:34,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:40:34,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:40:34,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:40:34,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:40:34,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:40:34,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:40:34,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:40:34,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:40:34,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:40:34,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:40:34,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:40:34,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:40:34,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:40:34,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:40:34,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:40:34,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:40:34,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:40:34,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:40:34,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:40:34,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:40:34,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:40:34,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:40:34,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:40:34,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:40:34,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:40:34,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:40:34,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:40:34,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:40:34,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:40:34,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:40:34,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:40:34,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:40:34,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:40:34,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:40:34,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:40:34,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:40:34,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:40:34,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:40:34,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:40:34,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:40:34,314 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 06:40:34,365 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:40:34,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:40:34,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:40:34,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:40:34,369 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:40:34,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:40:34,369 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:40:34,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:40:34,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:40:34,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:40:34,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:40:34,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:40:34,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:40:34,372 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:40:34,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:40:34,373 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:40:34,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:40:34,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:40:34,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:40:34,374 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:40:34,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:40:34,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:40:34,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:40:34,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:40:34,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:40:34,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:40:34,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:40:34,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:40:34,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:40:34,376 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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:40:34,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:40:34,873 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:40:34,878 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:40:34,881 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:40:34,881 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:40:34,883 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test28-1.c [2020-09-25 06:40:34,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68c3a47a0/ee4cebc62c28415dbaaf2dd660bf8214/FLAGdf957dc0f [2020-09-25 06:40:35,554 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:40:35,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test28-1.c [2020-09-25 06:40:35,565 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68c3a47a0/ee4cebc62c28415dbaaf2dd660bf8214/FLAGdf957dc0f [2020-09-25 06:40:35,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68c3a47a0/ee4cebc62c28415dbaaf2dd660bf8214 [2020-09-25 06:40:35,903 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:40:35,910 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:40:35,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:40:35,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:40:35,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:40:35,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:40:35" (1/1) ... [2020-09-25 06:40:35,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dd452c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:35, skipping insertion in model container [2020-09-25 06:40:35,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:40:35" (1/1) ... [2020-09-25 06:40:35,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:40:35,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:40:36,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:40:36,215 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:40:36,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:40:36,250 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:40:36,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:36 WrapperNode [2020-09-25 06:40:36,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:40:36,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:40:36,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:40:36,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:40:36,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:36" (1/1) ... [2020-09-25 06:40:36,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:36" (1/1) ... [2020-09-25 06:40:36,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:36" (1/1) ... [2020-09-25 06:40:36,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:36" (1/1) ... [2020-09-25 06:40:36,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:36" (1/1) ... [2020-09-25 06:40:36,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:36" (1/1) ... [2020-09-25 06:40:36,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:36" (1/1) ... [2020-09-25 06:40:36,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:40:36,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:40:36,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:40:36,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:40:36,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:36" (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 06:40:36,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:40:36,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:40:36,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:40:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:40:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:40:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:40:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 06:40:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 06:40:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 06:40:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 06:40:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:40:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:40:36,767 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:40:36,768 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 06:40:36,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:40:36 BoogieIcfgContainer [2020-09-25 06:40:36,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:40:36,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:40:36,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:40:36,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:40:36,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:40:35" (1/3) ... [2020-09-25 06:40:36,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cc8990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:40:36, skipping insertion in model container [2020-09-25 06:40:36,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:36" (2/3) ... [2020-09-25 06:40:36,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cc8990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:40:36, skipping insertion in model container [2020-09-25 06:40:36,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:40:36" (3/3) ... [2020-09-25 06:40:36,797 INFO L109 eAbstractionObserver]: Analyzing ICFG test28-1.c [2020-09-25 06:40:36,810 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:40:36,820 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:40:36,842 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:40:36,871 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:40:36,871 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:40:36,871 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:40:36,871 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:40:36,871 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:40:36,871 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:40:36,872 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:40:36,872 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:40:36,896 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 06:40:36,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 06:40:36,903 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:40:36,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:40:36,905 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:40:36,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:40:36,912 INFO L82 PathProgramCache]: Analyzing trace with hash -374520961, now seen corresponding path program 1 times [2020-09-25 06:40:36,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:40:36,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055987062] [2020-09-25 06:40:36,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:40:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:37,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:37,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:37,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:37,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:37,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 06:40:37,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:40:37,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-09-25 06:40:37,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:37,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:40:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:40:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 06:40:37,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:40:37,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:40:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:37,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:37,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:37,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:40:37,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:37,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:40:37,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:37,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:37,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:37,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:37,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:37,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:37,810 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 06:40:37,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055987062] [2020-09-25 06:40:37,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:40:37,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:40:37,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866901642] [2020-09-25 06:40:37,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:40:37,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:40:37,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:40:37,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:40:37,851 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 06:40:38,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:40:38,047 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-09-25 06:40:38,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:40:38,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-09-25 06:40:38,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:40:38,063 INFO L225 Difference]: With dead ends: 77 [2020-09-25 06:40:38,063 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 06:40:38,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:40:38,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 06:40:38,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2020-09-25 06:40:38,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 06:40:38,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-09-25 06:40:38,112 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 24 [2020-09-25 06:40:38,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:40:38,112 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-09-25 06:40:38,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:40:38,112 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-09-25 06:40:38,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 06:40:38,114 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:40:38,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:40:38,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:40:38,115 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:40:38,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:40:38,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1073513505, now seen corresponding path program 1 times [2020-09-25 06:40:38,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:40:38,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614457497] [2020-09-25 06:40:38,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:40:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:38,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:38,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:38,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:38,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:38,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:38,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 06:40:38,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:40:38,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-09-25 06:40:38,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:38,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:40:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:40:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:40:38,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:40:38,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:40:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:38,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:38,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:38,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:40:38,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:38,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:40:38,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:38,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:38,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:38,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:38,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:38,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:38,498 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 06:40:38,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614457497] [2020-09-25 06:40:38,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:40:38,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:40:38,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618974974] [2020-09-25 06:40:38,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:40:38,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:40:38,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:40:38,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:40:38,503 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 5 states. [2020-09-25 06:40:38,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:40:38,582 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 06:40:38,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:40:38,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-09-25 06:40:38,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:40:38,584 INFO L225 Difference]: With dead ends: 39 [2020-09-25 06:40:38,584 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 06:40:38,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:40:38,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 06:40:38,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 06:40:38,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 06:40:38,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-09-25 06:40:38,591 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 24 [2020-09-25 06:40:38,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:40:38,592 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-09-25 06:40:38,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:40:38,592 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-09-25 06:40:38,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-25 06:40:38,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:40:38,593 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] [2020-09-25 06:40:38,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:40:38,594 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:40:38,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:40:38,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1400624444, now seen corresponding path program 1 times [2020-09-25 06:40:38,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:40:38,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837583857] [2020-09-25 06:40:38,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:40:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 06:40:38,609 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 06:40:38,609 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 06:40:38,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:40:38,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 06:40:38 BoogieIcfgContainer [2020-09-25 06:40:38,637 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 06:40:38,641 INFO L168 Benchmark]: Toolchain (without parser) took 2734.43 ms. Allocated memory was 148.4 MB in the beginning and 233.3 MB in the end (delta: 84.9 MB). Free memory was 104.9 MB in the beginning and 160.9 MB in the end (delta: -56.0 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. [2020-09-25 06:40:38,642 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 06:40:38,643 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.75 ms. Allocated memory is still 148.4 MB. Free memory was 104.3 MB in the beginning and 94.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-25 06:40:38,644 INFO L168 Benchmark]: Boogie Preprocessor took 125.34 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 94.5 MB in the beginning and 183.1 MB in the end (delta: -88.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-25 06:40:38,645 INFO L168 Benchmark]: RCFGBuilder took 405.14 ms. Allocated memory is still 205.0 MB. Free memory was 183.1 MB in the beginning and 167.1 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2020-09-25 06:40:38,646 INFO L168 Benchmark]: TraceAbstraction took 1853.23 ms. Allocated memory was 205.0 MB in the beginning and 233.3 MB in the end (delta: 28.3 MB). Free memory was 166.5 MB in the beginning and 160.9 MB in the end (delta: 5.5 MB). Peak memory consumption was 33.8 MB. Max. memory is 7.1 GB. [2020-09-25 06:40:38,651 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 340.75 ms. Allocated memory is still 148.4 MB. Free memory was 104.3 MB in the beginning and 94.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.34 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 94.5 MB in the beginning and 183.1 MB in the end (delta: -88.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 405.14 ms. Allocated memory is still 205.0 MB. Free memory was 183.1 MB in the beginning and 167.1 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1853.23 ms. Allocated memory was 205.0 MB in the beginning and 233.3 MB in the end (delta: 28.3 MB). Free memory was 166.5 MB in the beginning and 160.9 MB in the end (delta: 5.5 MB). Peak memory consumption was 33.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 26]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] struct dummy d1, d2; [L13] int n = __VERIFIER_nondet_int(); [L14] EXPR n ? &d1 : &d2 [L14] struct dummy *pd = n ? &d1 : &d2; [L15] COND TRUE pd == &d2 [L16] pd->a = 0 [L20] pd == &d2 && d2.b != 0 [L20] EXPR d2.b [L20] pd == &d2 && d2.b != 0 [L20] COND TRUE pd == &d2 && d2.b != 0 [L26] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 21 SDslu, 117 SDs, 0 SdLazy, 122 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred 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, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 2162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 incorrect! Received shutdown request...