/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-tiling/skippedu.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:09:23,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:09:23,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:09:23,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:09:23,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:09:23,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:09:23,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:09:23,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:09:23,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:09:23,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:09:23,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:09:23,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:09:23,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:09:23,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:09:23,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:09:23,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:09:23,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:09:23,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:09:23,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:09:23,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:09:23,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:09:23,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:09:23,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:09:23,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:09:23,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:09:23,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:09:23,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:09:23,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:09:23,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:09:23,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:09:23,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:09:23,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:09:23,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:09:23,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:09:23,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:09:23,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:09:23,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:09:23,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:09:23,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:09:23,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:09:23,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:09:23,663 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 16:09:23,713 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:09:23,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:09:23,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:09:23,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:09:23,716 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:09:23,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:09:23,717 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:09:23,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:09:23,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:09:23,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:09:23,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:09:23,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:09:23,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:09:23,720 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:09:23,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:09:23,720 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:09:23,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:09:23,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:09:23,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:09:23,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:09:23,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:09:23,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:09:23,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:09:23,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:09:23,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:09:23,722 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:09:23,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:09:23,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:09:23,723 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:09:23,723 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 16:09:24,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:09:24,240 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:09:24,245 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:09:24,247 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:09:24,249 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:09:24,250 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/skippedu.c [2020-09-24 16:09:24,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/745f0c5f1/d9e75e0e338c45b4bbe4cb37a5fd0a1f/FLAG904d2fdc0 [2020-09-24 16:09:24,977 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:09:24,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/skippedu.c [2020-09-24 16:09:24,986 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/745f0c5f1/d9e75e0e338c45b4bbe4cb37a5fd0a1f/FLAG904d2fdc0 [2020-09-24 16:09:25,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/745f0c5f1/d9e75e0e338c45b4bbe4cb37a5fd0a1f [2020-09-24 16:09:25,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:09:25,361 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:09:25,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:09:25,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:09:25,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:09:25,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:09:25" (1/1) ... [2020-09-24 16:09:25,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8874c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:09:25, skipping insertion in model container [2020-09-24 16:09:25,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:09:25" (1/1) ... [2020-09-24 16:09:25,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:09:25,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:09:25,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:09:25,640 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:09:25,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:09:25,679 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:09:25,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:09:25 WrapperNode [2020-09-24 16:09:25,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:09:25,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:09:25,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:09:25,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:09:25,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:09:25" (1/1) ... [2020-09-24 16:09:25,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:09:25" (1/1) ... [2020-09-24 16:09:25,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:09:25" (1/1) ... [2020-09-24 16:09:25,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:09:25" (1/1) ... [2020-09-24 16:09:25,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:09:25" (1/1) ... [2020-09-24 16:09:25,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:09:25" (1/1) ... [2020-09-24 16:09:25,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:09:25" (1/1) ... [2020-09-24 16:09:25,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:09:25,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:09:25,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:09:25,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:09:25,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:09:25" (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 16:09:25,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:09:25,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:09:25,904 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 16:09:25,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 16:09:25,905 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:09:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:09:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:09:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 16:09:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 16:09:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:09:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:09:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:09:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:09:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:09:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:09:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:09:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:09:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:09:26,295 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:09:26,295 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 16:09:26,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:09:26 BoogieIcfgContainer [2020-09-24 16:09:26,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:09:26,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:09:26,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:09:26,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:09:26,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:09:25" (1/3) ... [2020-09-24 16:09:26,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4252a833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:09:26, skipping insertion in model container [2020-09-24 16:09:26,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:09:25" (2/3) ... [2020-09-24 16:09:26,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4252a833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:09:26, skipping insertion in model container [2020-09-24 16:09:26,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:09:26" (3/3) ... [2020-09-24 16:09:26,311 INFO L109 eAbstractionObserver]: Analyzing ICFG skippedu.c [2020-09-24 16:09:26,323 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:09:26,333 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:09:26,355 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:09:26,385 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:09:26,385 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:09:26,385 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:09:26,385 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:09:26,386 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:09:26,386 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:09:26,386 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:09:26,386 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:09:26,411 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-09-24 16:09:26,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 16:09:26,420 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:26,421 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 16:09:26,422 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:26,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:26,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1270765896, now seen corresponding path program 1 times [2020-09-24 16:09:26,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:26,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92018065] [2020-09-24 16:09:26,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:26,589 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:26,590 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:26,590 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:26,590 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:26,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 16:09:26,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:26,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 16:09:26,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:26,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:26,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 16:09:26,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:26,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:09:26,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:26,695 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:26,695 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:26,696 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:26,696 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:26,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:09:26,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:26,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:09:26,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:26,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:26,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:26,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:26,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:09:26,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:09:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:26,714 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:26,714 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:26,715 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:26,715 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:26,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:09:26,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:26,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:26,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:26,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:26,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 16:09:26,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:26,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:09:26,736 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 16:09:26,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92018065] [2020-09-24 16:09:26,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:09:26,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:09:26,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323959698] [2020-09-24 16:09:26,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:09:26,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:26,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:09:26,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:09:26,768 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 3 states. [2020-09-24 16:09:26,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:26,958 INFO L93 Difference]: Finished difference Result 108 states and 129 transitions. [2020-09-24 16:09:26,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:09:26,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-09-24 16:09:26,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:26,972 INFO L225 Difference]: With dead ends: 108 [2020-09-24 16:09:26,972 INFO L226 Difference]: Without dead ends: 59 [2020-09-24 16:09:26,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:09:27,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-24 16:09:27,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-09-24 16:09:27,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-24 16:09:27,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-09-24 16:09:27,033 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 33 [2020-09-24 16:09:27,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:27,034 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-09-24 16:09:27,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:09:27,034 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-09-24 16:09:27,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 16:09:27,036 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:27,036 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 16:09:27,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:09:27,037 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:27,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:27,037 INFO L82 PathProgramCache]: Analyzing trace with hash 50142755, now seen corresponding path program 1 times [2020-09-24 16:09:27,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:27,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208680506] [2020-09-24 16:09:27,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:27,087 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:27,087 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:27,088 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:27,088 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:27,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 16:09:27,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:27,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 16:09:27,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:27,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:09:27,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:09:27,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:09:27,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:27,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:27,161 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:27,162 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:27,162 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:27,162 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:27,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:09:27,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:27,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:27,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:27,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:09:27,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 16:09:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:27,175 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:27,175 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:27,176 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:27,176 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:27,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:09:27,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:27,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:27,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:27,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:27,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 16:09:27,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:27,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:09:27,188 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 16:09:27,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208680506] [2020-09-24 16:09:27,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:09:27,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:09:27,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013587158] [2020-09-24 16:09:27,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:09:27,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:27,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:09:27,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:09:27,193 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 5 states. [2020-09-24 16:09:27,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:27,457 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2020-09-24 16:09:27,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:09:27,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-09-24 16:09:27,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:27,462 INFO L225 Difference]: With dead ends: 106 [2020-09-24 16:09:27,462 INFO L226 Difference]: Without dead ends: 71 [2020-09-24 16:09:27,464 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 16:09:27,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-24 16:09:27,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 60. [2020-09-24 16:09:27,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 16:09:27,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-09-24 16:09:27,485 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 33 [2020-09-24 16:09:27,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:27,485 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-09-24 16:09:27,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:09:27,486 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-09-24 16:09:27,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 16:09:27,489 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:27,489 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] [2020-09-24 16:09:27,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:09:27,490 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:27,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:27,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1001580845, now seen corresponding path program 1 times [2020-09-24 16:09:27,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:27,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459879421] [2020-09-24 16:09:27,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:27,596 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:27,597 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:27,597 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:27,597 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:27,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 16:09:27,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:27,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 16:09:27,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:09:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:09:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 16:09:27,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:09:27,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:27,738 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:27,738 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:27,738 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:27,740 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:27,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:09:27,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:27,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:09:27,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:27,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:27,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:27,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:27,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:09:27,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 16:09:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:27,755 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:27,756 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:27,756 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:27,756 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:27,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:09:27,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:27,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:27,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:27,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:27,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 16:09:27,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:27,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:09:27,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:09:27,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459879421] [2020-09-24 16:09:27,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:09:27,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 16:09:27,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519382776] [2020-09-24 16:09:27,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 16:09:27,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:27,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 16:09:27,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:09:27,782 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 7 states. [2020-09-24 16:09:28,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:28,068 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2020-09-24 16:09:28,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 16:09:28,069 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-09-24 16:09:28,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:28,070 INFO L225 Difference]: With dead ends: 110 [2020-09-24 16:09:28,070 INFO L226 Difference]: Without dead ends: 75 [2020-09-24 16:09:28,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-24 16:09:28,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-24 16:09:28,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 67. [2020-09-24 16:09:28,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-24 16:09:28,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-09-24 16:09:28,081 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 40 [2020-09-24 16:09:28,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:28,082 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-09-24 16:09:28,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 16:09:28,082 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-09-24 16:09:28,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 16:09:28,083 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:28,084 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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 16:09:28,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:09:28,084 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:28,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:28,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1248131107, now seen corresponding path program 2 times [2020-09-24 16:09:28,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:28,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128697758] [2020-09-24 16:09:28,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:28,127 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 16:09:28,128 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:28,128 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:28,128 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:28,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 16:09:28,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:28,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 16:09:28,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:09:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:09:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 16:09:28,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:28,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:09:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:28,228 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:28,228 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:28,228 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:28,228 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:28,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:09:28,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:28,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:09:28,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:28,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:09:28,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:28,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:09:28,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:28,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 16:09:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:09:28,249 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:09:28,249 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:09:28,249 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:09:28,249 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:09:28,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:09:28,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:09:28,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:09:28,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:09:28,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:09:28,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:09:28,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:09:28,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:09:28,272 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 16:09:28,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128697758] [2020-09-24 16:09:28,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:09:28,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:09:28,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039784221] [2020-09-24 16:09:28,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:09:28,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:09:28,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:09:28,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:09:28,277 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 5 states. [2020-09-24 16:09:28,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:09:28,496 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2020-09-24 16:09:28,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:09:28,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-09-24 16:09:28,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:09:28,498 INFO L225 Difference]: With dead ends: 88 [2020-09-24 16:09:28,498 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 16:09:28,499 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 16:09:28,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 16:09:28,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2020-09-24 16:09:28,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 16:09:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-09-24 16:09:28,520 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 47 [2020-09-24 16:09:28,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:09:28,521 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-09-24 16:09:28,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:09:28,521 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-09-24 16:09:28,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 16:09:28,523 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:09:28,523 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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 16:09:28,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:09:28,526 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:09:28,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:09:28,527 INFO L82 PathProgramCache]: Analyzing trace with hash -153041457, now seen corresponding path program 1 times [2020-09-24 16:09:28,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:09:28,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233224298] [2020-09-24 16:09:28,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:09:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:09:28,603 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:09:28,604 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:09:28,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:09:28,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:09:28 BoogieIcfgContainer [2020-09-24 16:09:28,642 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:09:28,648 INFO L168 Benchmark]: Toolchain (without parser) took 3286.45 ms. Allocated memory was 141.0 MB in the beginning and 234.9 MB in the end (delta: 93.8 MB). Free memory was 103.2 MB in the beginning and 87.9 MB in the end (delta: 15.3 MB). Peak memory consumption was 109.1 MB. Max. memory is 7.1 GB. [2020-09-24 16:09:28,650 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 16:09:28,651 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.45 ms. Allocated memory is still 141.0 MB. Free memory was 102.5 MB in the beginning and 92.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-24 16:09:28,653 INFO L168 Benchmark]: Boogie Preprocessor took 142.41 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 92.2 MB in the beginning and 180.4 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-09-24 16:09:28,659 INFO L168 Benchmark]: RCFGBuilder took 477.78 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 160.5 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-09-24 16:09:28,660 INFO L168 Benchmark]: TraceAbstraction took 2339.28 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 160.5 MB in the beginning and 87.9 MB in the end (delta: 72.5 MB). Peak memory consumption was 104.5 MB. Max. memory is 7.1 GB. [2020-09-24 16:09:28,671 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 318.45 ms. Allocated memory is still 141.0 MB. Free memory was 102.5 MB in the beginning and 92.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.41 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 92.2 MB in the beginning and 180.4 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 477.78 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 160.5 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2339.28 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 160.5 MB in the beginning and 87.9 MB in the end (delta: 72.5 MB). Peak memory consumption was 104.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int SIZE; [L12] const int MAX = 100000; [L16] SIZE = __VERIFIER_nondet_int() [L17] COND TRUE SIZE > 1 && SIZE < MAX [L19] int i; [L20] int *a = malloc(sizeof(int)*SIZE); [L22] i = 0 [L22] COND TRUE i < SIZE [L24] a[i] = __VERIFIER_nondet_int() [L22] i++ [L22] COND TRUE i < SIZE [L24] a[i] = __VERIFIER_nondet_int() [L22] i++ [L22] COND FALSE !(i < SIZE) [L27] COND FALSE !(SIZE % 2 != 0) [L29] CALL assume_abort_if_not(SIZE % 2 == 0) [L4] COND FALSE !(!cond) [L29] RET assume_abort_if_not(SIZE % 2 == 0) [L30] i = 1 [L30] COND TRUE i <= SIZE/2 [L32] EXPR a[2*i-2] [L32] COND FALSE !(a[2*i-2] > i) [L36] EXPR a[2*i-1] [L36] COND FALSE !(a[2*i-1] > i) [L30] i++ [L30] COND FALSE !(i <= SIZE/2) [L42] i = 0 [L42] COND TRUE i < SIZE [L44] EXPR a[i] [L44] CALL __VERIFIER_assert( a[i] <= i ) [L6] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 203 SDtfs, 257 SDslu, 117 SDs, 0 SdLazy, 435 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=4, 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, 4 MinimizatonAttempts, 25 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 210 NumberOfCodeBlocks, 210 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 149 ConstructedInterpolants, 0 QuantifiedInterpolants, 12540 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 9/10 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...