/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 true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ifeqn1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:01:41,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:01:41,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:01:41,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:01:41,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:01:41,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:01:41,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:01:41,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:01:41,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:01:41,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:01:41,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:01:41,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:01:41,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:01:41,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:01:41,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:01:41,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:01:41,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:01:41,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:01:41,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:01:41,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:01:41,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:01:41,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:01:41,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:01:41,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:01:41,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 22:01:41,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:01:41,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:01:41,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:01:41,744 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 [2020-08-18 22:01:41,765 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:01:41,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:01:41,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:01:41,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:01:41,767 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:01:41,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:01:41,768 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:01:41,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:01:41,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:01:41,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:01:41,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:01:41,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:01:41,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:01:41,769 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:01:41,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:01:41,769 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:01:41,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:01:41,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:01:41,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:01:41,770 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:01:41,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:01:41,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:01:41,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:01:41,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:01:41,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:01:41,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:01:41,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:01:41,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:01:41,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:01:41,774 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 -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 22:01:42,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:01:42,092 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:01:42,097 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:01:42,098 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:01:42,099 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:01:42,100 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn1f.c [2020-08-18 22:01:42,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0ec557b9/56acc935716048468824290d07a24bb9/FLAG2b38a94c8 [2020-08-18 22:01:42,610 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:01:42,611 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ifeqn1f.c [2020-08-18 22:01:42,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0ec557b9/56acc935716048468824290d07a24bb9/FLAG2b38a94c8 [2020-08-18 22:01:43,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0ec557b9/56acc935716048468824290d07a24bb9 [2020-08-18 22:01:43,013 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:01:43,014 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:01:43,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:01:43,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:01:43,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:01:43,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:01:43" (1/1) ... [2020-08-18 22:01:43,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@700715c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:43, skipping insertion in model container [2020-08-18 22:01:43,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:01:43" (1/1) ... [2020-08-18 22:01:43,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:01:43,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:01:43,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:01:43,252 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:01:43,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:01:43,291 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:01:43,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:43 WrapperNode [2020-08-18 22:01:43,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:01:43,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:01:43,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:01:43,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:01:43,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:43" (1/1) ... [2020-08-18 22:01:43,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:43" (1/1) ... [2020-08-18 22:01:43,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:43" (1/1) ... [2020-08-18 22:01:43,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:43" (1/1) ... [2020-08-18 22:01:43,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:43" (1/1) ... [2020-08-18 22:01:43,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:43" (1/1) ... [2020-08-18 22:01:43,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:43" (1/1) ... [2020-08-18 22:01:43,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:01:43,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:01:43,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:01:43,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:01:43,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:43" (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 [2020-08-18 22:01:43,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:01:43,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:01:43,492 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 22:01:43,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 22:01:43,493 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:01:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:01:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 22:01:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 22:01:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 22:01:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:01:43,494 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:01:43,494 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:01:43,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:01:43,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:01:43,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:01:43,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:01:43,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:01:43,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:01:43,791 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:01:43,792 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-18 22:01:43,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:01:43 BoogieIcfgContainer [2020-08-18 22:01:43,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:01:43,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:01:43,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:01:43,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:01:43,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:01:43" (1/3) ... [2020-08-18 22:01:43,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6301b3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:01:43, skipping insertion in model container [2020-08-18 22:01:43,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:43" (2/3) ... [2020-08-18 22:01:43,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6301b3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:01:43, skipping insertion in model container [2020-08-18 22:01:43,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:01:43" (3/3) ... [2020-08-18 22:01:43,804 INFO L109 eAbstractionObserver]: Analyzing ICFG ifeqn1f.c [2020-08-18 22:01:43,817 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:01:43,825 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:01:43,840 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:01:43,868 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:01:43,868 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:01:43,868 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:01:43,868 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:01:43,869 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:01:43,869 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:01:43,869 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:01:43,869 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:01:43,889 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-08-18 22:01:43,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-18 22:01:43,895 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:01:43,896 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] [2020-08-18 22:01:43,897 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:01:43,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:01:43,903 INFO L82 PathProgramCache]: Analyzing trace with hash -294712258, now seen corresponding path program 1 times [2020-08-18 22:01:43,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:01:43,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656273359] [2020-08-18 22:01:43,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:01:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:01:44,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:01:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:01:44,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:01:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:01:44,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:01:44,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656273359] [2020-08-18 22:01:44,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:01:44,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 22:01:44,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407801882] [2020-08-18 22:01:44,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 22:01:44,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:01:44,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 22:01:44,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:01:44,145 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-08-18 22:01:44,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:01:44,284 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2020-08-18 22:01:44,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 22:01:44,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-18 22:01:44,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:01:44,305 INFO L225 Difference]: With dead ends: 62 [2020-08-18 22:01:44,306 INFO L226 Difference]: Without dead ends: 31 [2020-08-18 22:01:44,314 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 [2020-08-18 22:01:44,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-08-18 22:01:44,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-08-18 22:01:44,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-18 22:01:44,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-08-18 22:01:44,352 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 22 [2020-08-18 22:01:44,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:01:44,353 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-08-18 22:01:44,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 22:01:44,353 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-08-18 22:01:44,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-18 22:01:44,355 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:01:44,355 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] [2020-08-18 22:01:44,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:01:44,356 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:01:44,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:01:44,356 INFO L82 PathProgramCache]: Analyzing trace with hash -2054124171, now seen corresponding path program 1 times [2020-08-18 22:01:44,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:01:44,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147615104] [2020-08-18 22:01:44,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:01:44,386 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-18 22:01:44,386 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-18 22:01:44,386 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:01:44,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:01:44,405 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-18 22:01:44,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:01:44 BoogieIcfgContainer [2020-08-18 22:01:44,406 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:01:44,409 INFO L168 Benchmark]: Toolchain (without parser) took 1393.63 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 102.7 MB in the beginning and 131.8 MB in the end (delta: -29.0 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-08-18 22:01:44,410 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 148.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 22:01:44,411 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.38 ms. Allocated memory is still 148.4 MB. Free memory was 102.5 MB in the beginning and 92.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-18 22:01:44,413 INFO L168 Benchmark]: Boogie Preprocessor took 138.59 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 92.3 MB in the beginning and 182.3 MB in the end (delta: -90.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-08-18 22:01:44,413 INFO L168 Benchmark]: RCFGBuilder took 365.00 ms. Allocated memory is still 204.5 MB. Free memory was 182.3 MB in the beginning and 164.7 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2020-08-18 22:01:44,414 INFO L168 Benchmark]: TraceAbstraction took 609.09 ms. Allocated memory is still 204.5 MB. Free memory was 164.0 MB in the beginning and 131.8 MB in the end (delta: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. [2020-08-18 22:01:44,419 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 148.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.38 ms. Allocated memory is still 148.4 MB. Free memory was 102.5 MB in the beginning and 92.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.59 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 92.3 MB in the beginning and 182.3 MB in the end (delta: -90.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 365.00 ms. Allocated memory is still 204.5 MB. Free memory was 182.3 MB in the beginning and 164.7 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 609.09 ms. Allocated memory is still 204.5 MB. Free memory was 164.0 MB in the beginning and 131.8 MB in the end (delta: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] i=0 [L29] COND FALSE !(i