/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 --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/indp2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:28:15,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:28:15,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:28:15,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:28:15,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:28:15,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:28:15,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:28:15,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:28:15,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:28:15,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:28:15,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:28:15,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:28:15,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:28:15,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:28:15,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:28:15,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:28:15,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:28:15,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:28:15,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:28:15,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:28:15,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:28:15,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:28:15,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:28:15,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:28:15,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-21 10:28:15,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:28:15,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:28:15,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:28:15,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:28:15,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:28:15,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:28:15,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:28:15,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:28:15,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:28:15,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:28:15,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:28:15,237 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 [2020-09-21 10:28:15,265 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:28:15,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:28:15,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:28:15,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:28:15,267 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:28:15,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:28:15,267 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:28:15,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:28:15,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:28:15,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:28:15,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:28:15,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:28:15,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:28:15,269 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:28:15,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:28:15,269 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:28:15,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:28:15,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:28:15,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:28:15,270 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:28:15,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:28:15,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:28:15,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:28:15,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:28:15,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:28:15,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:28:15,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:28:15,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:28:15,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:28:15,272 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.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-21 10:28:15,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:28:15,774 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:28:15,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:28:15,779 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:28:15,779 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:28:15,780 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp2f.c [2020-09-21 10:28:15,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67baea020/b9f7b772c7f045a6bc793d2cbf25de7a/FLAGcac0a9de8 [2020-09-21 10:28:16,478 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:28:16,478 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/indp2f.c [2020-09-21 10:28:16,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67baea020/b9f7b772c7f045a6bc793d2cbf25de7a/FLAGcac0a9de8 [2020-09-21 10:28:16,812 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67baea020/b9f7b772c7f045a6bc793d2cbf25de7a [2020-09-21 10:28:16,826 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:28:16,833 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:28:16,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:28:16,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:28:16,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:28:16,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:28:16" (1/1) ... [2020-09-21 10:28:16,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f6381bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:16, skipping insertion in model container [2020-09-21 10:28:16,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:28:16" (1/1) ... [2020-09-21 10:28:16,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:28:16,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:28:17,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:28:17,125 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:28:17,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:28:17,170 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:28:17,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:17 WrapperNode [2020-09-21 10:28:17,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:28:17,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:28:17,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:28:17,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:28:17,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:17" (1/1) ... [2020-09-21 10:28:17,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:17" (1/1) ... [2020-09-21 10:28:17,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:17" (1/1) ... [2020-09-21 10:28:17,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:17" (1/1) ... [2020-09-21 10:28:17,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:17" (1/1) ... [2020-09-21 10:28:17,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:17" (1/1) ... [2020-09-21 10:28:17,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:17" (1/1) ... [2020-09-21 10:28:17,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:28:17,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:28:17,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:28:17,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:28:17,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:17" (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 [2020-09-21 10:28:17,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:28:17,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:28:17,382 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 10:28:17,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 10:28:17,383 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:28:17,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:28:17,384 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 10:28:17,384 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 10:28:17,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 10:28:17,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:28:17,385 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:28:17,385 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:28:17,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:28:17,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:28:17,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:28:17,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:28:17,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:28:17,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:28:17,716 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:28:17,717 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-21 10:28:17,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:28:17 BoogieIcfgContainer [2020-09-21 10:28:17,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:28:17,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:28:17,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:28:17,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:28:17,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:28:16" (1/3) ... [2020-09-21 10:28:17,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d5de4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:28:17, skipping insertion in model container [2020-09-21 10:28:17,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:17" (2/3) ... [2020-09-21 10:28:17,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d5de4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:28:17, skipping insertion in model container [2020-09-21 10:28:17,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:28:17" (3/3) ... [2020-09-21 10:28:17,733 INFO L109 eAbstractionObserver]: Analyzing ICFG indp2f.c [2020-09-21 10:28:17,746 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:28:17,756 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:28:17,778 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:28:17,805 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:28:17,805 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:28:17,806 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:28:17,806 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:28:17,806 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:28:17,806 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:28:17,806 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:28:17,807 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:28:17,831 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-09-21 10:28:17,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 10:28:17,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:17,840 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] [2020-09-21 10:28:17,840 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:17,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:17,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1155719453, now seen corresponding path program 1 times [2020-09-21 10:28:17,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:17,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370192953] [2020-09-21 10:28:17,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:18,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:28:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:18,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:28:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:18,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:28:18,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370192953] [2020-09-21 10:28:18,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:28:18,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:28:18,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143410794] [2020-09-21 10:28:18,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:28:18,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:28:18,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:28:18,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:28:18,125 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-09-21 10:28:18,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:28:18,262 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-09-21 10:28:18,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:28:18,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-09-21 10:28:18,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:28:18,276 INFO L225 Difference]: With dead ends: 64 [2020-09-21 10:28:18,277 INFO L226 Difference]: Without dead ends: 32 [2020-09-21 10:28:18,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:28:18,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-21 10:28:18,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-09-21 10:28:18,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-21 10:28:18,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-09-21 10:28:18,333 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-09-21 10:28:18,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:28:18,333 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-09-21 10:28:18,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:28:18,333 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-09-21 10:28:18,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 10:28:18,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:18,335 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] [2020-09-21 10:28:18,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:28:18,335 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:18,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:18,336 INFO L82 PathProgramCache]: Analyzing trace with hash -124144225, now seen corresponding path program 1 times [2020-09-21 10:28:18,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:18,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846285] [2020-09-21 10:28:18,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:18,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:28:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:18,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:28:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:18,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:28:18,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846285] [2020-09-21 10:28:18,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:28:18,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:28:18,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604637952] [2020-09-21 10:28:18,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:28:18,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:28:18,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:28:18,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:28:18,495 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 5 states. [2020-09-21 10:28:18,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:28:18,660 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-09-21 10:28:18,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 10:28:18,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-09-21 10:28:18,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:28:18,665 INFO L225 Difference]: With dead ends: 59 [2020-09-21 10:28:18,665 INFO L226 Difference]: Without dead ends: 42 [2020-09-21 10:28:18,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:28:18,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-21 10:28:18,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-09-21 10:28:18,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-21 10:28:18,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-09-21 10:28:18,683 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2020-09-21 10:28:18,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:28:18,684 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-09-21 10:28:18,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:28:18,684 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-09-21 10:28:18,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 10:28:18,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:18,685 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] [2020-09-21 10:28:18,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:28:18,686 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:18,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:18,687 INFO L82 PathProgramCache]: Analyzing trace with hash -191015719, now seen corresponding path program 1 times [2020-09-21 10:28:18,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:18,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956001473] [2020-09-21 10:28:18,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:18,707 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-21 10:28:18,707 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-21 10:28:18,708 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:28:18,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:28:18,742 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-21 10:28:18,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:28:18 BoogieIcfgContainer [2020-09-21 10:28:18,743 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:28:18,759 INFO L168 Benchmark]: Toolchain (without parser) took 1926.81 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 100.8 MB in the beginning and 103.8 MB in the end (delta: -2.9 MB). Peak memory consumption was 59.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:18,761 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 10:28:18,762 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.76 ms. Allocated memory is still 138.9 MB. Free memory was 100.2 MB in the beginning and 89.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:18,764 INFO L168 Benchmark]: Boogie Preprocessor took 127.53 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 89.9 MB in the beginning and 178.7 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:18,765 INFO L168 Benchmark]: RCFGBuilder took 422.86 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 161.2 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:18,767 INFO L168 Benchmark]: TraceAbstraction took 1029.06 ms. Allocated memory is still 201.3 MB. Free memory was 161.2 MB in the beginning and 103.8 MB in the end (delta: 57.5 MB). Peak memory consumption was 57.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:18,771 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 336.76 ms. Allocated memory is still 138.9 MB. Free memory was 100.2 MB in the beginning and 89.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.53 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 89.9 MB in the beginning and 178.7 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 422.86 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 161.2 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1029.06 ms. Allocated memory is still 201.3 MB. Free memory was 161.2 MB in the beginning and 103.8 MB in the end (delta: 57.5 MB). Peak memory consumption was 57.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L28] i=0 [L28] COND TRUE i