/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=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ss2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:12:00,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:12:00,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:12:00,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:12:00,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:12:00,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:12:00,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:12:00,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:12:00,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:12:00,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:12:00,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:12:00,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:12:00,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:12:00,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:12:00,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:12:00,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:12:00,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:12:00,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:12:00,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:12:00,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:12:00,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:12:00,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:12:00,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:12:00,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:12:00,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 17:12:00,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:12:00,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:12:00,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:12:00,214 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 17:12:00,236 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:12:00,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:12:00,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:12:00,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:12:00,238 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:12:00,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:12:00,238 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:12:00,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:12:00,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:12:00,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:12:00,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:12:00,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:12:00,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:12:00,240 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:12:00,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:12:00,240 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:12:00,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:12:00,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:12:00,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:12:00,241 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:12:00,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:12:00,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:12:00,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:12:00,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:12:00,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:12:00,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:12:00,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:12:00,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:12:00,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:12:00,243 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 17:12:00,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:12:00,573 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:12:00,576 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:12:00,578 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:12:00,578 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:12:00,579 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss2f.c [2020-08-18 17:12:00,651 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1004d03b6/13efdbbc862c4610802ab1dbb0c04c98/FLAGa4116b3d1 [2020-08-18 17:12:01,111 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:12:01,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ss2f.c [2020-08-18 17:12:01,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1004d03b6/13efdbbc862c4610802ab1dbb0c04c98/FLAGa4116b3d1 [2020-08-18 17:12:01,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1004d03b6/13efdbbc862c4610802ab1dbb0c04c98 [2020-08-18 17:12:01,496 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:12:01,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:12:01,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:12:01,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:12:01,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:12:01,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:12:01" (1/1) ... [2020-08-18 17:12:01,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@788ef5e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:12:01, skipping insertion in model container [2020-08-18 17:12:01,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:12:01" (1/1) ... [2020-08-18 17:12:01,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:12:01,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:12:01,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:12:01,733 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:12:01,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:12:01,782 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:12:01,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:12:01 WrapperNode [2020-08-18 17:12:01,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:12:01,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:12:01,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:12:01,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:12:01,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:12:01" (1/1) ... [2020-08-18 17:12:01,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:12:01" (1/1) ... [2020-08-18 17:12:01,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:12:01" (1/1) ... [2020-08-18 17:12:01,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:12:01" (1/1) ... [2020-08-18 17:12:01,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:12:01" (1/1) ... [2020-08-18 17:12:01,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:12:01" (1/1) ... [2020-08-18 17:12:01,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:12:01" (1/1) ... [2020-08-18 17:12:01,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:12:01,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:12:01,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:12:01,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:12:01,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:12:01" (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 17:12:01,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:12:01,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:12:01,988 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 17:12:01,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 17:12:01,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:12:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:12:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 17:12:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 17:12:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 17:12:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 17:12:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 17:12:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:12:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 17:12:01,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 17:12:01,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:12:01,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:12:01,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:12:01,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:12:01,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:12:02,303 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:12:02,303 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-08-18 17:12:02,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:12:02 BoogieIcfgContainer [2020-08-18 17:12:02,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:12:02,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:12:02,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:12:02,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:12:02,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:12:01" (1/3) ... [2020-08-18 17:12:02,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b65493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:12:02, skipping insertion in model container [2020-08-18 17:12:02,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:12:01" (2/3) ... [2020-08-18 17:12:02,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b65493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:12:02, skipping insertion in model container [2020-08-18 17:12:02,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:12:02" (3/3) ... [2020-08-18 17:12:02,332 INFO L109 eAbstractionObserver]: Analyzing ICFG ss2f.c [2020-08-18 17:12:02,356 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:12:02,364 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:12:02,383 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:12:02,403 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:12:02,403 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:12:02,403 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:12:02,403 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:12:02,403 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:12:02,403 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:12:02,403 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:12:02,403 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:12:02,422 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-08-18 17:12:02,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 17:12:02,429 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:12:02,430 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] [2020-08-18 17:12:02,430 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:12:02,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:12:02,436 INFO L82 PathProgramCache]: Analyzing trace with hash -96589013, now seen corresponding path program 1 times [2020-08-18 17:12:02,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:12:02,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337119762] [2020-08-18 17:12:02,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:12:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:12:02,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:12:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:12:02,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:12:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:12:02,665 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 17:12:02,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337119762] [2020-08-18 17:12:02,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:12:02,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 17:12:02,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116304623] [2020-08-18 17:12:02,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 17:12:02,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:12:02,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 17:12:02,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 17:12:02,693 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-08-18 17:12:02,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:12:02,877 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2020-08-18 17:12:02,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 17:12:02,879 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-08-18 17:12:02,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:12:02,896 INFO L225 Difference]: With dead ends: 82 [2020-08-18 17:12:02,898 INFO L226 Difference]: Without dead ends: 41 [2020-08-18 17:12:02,902 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 17:12:02,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-08-18 17:12:02,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-08-18 17:12:02,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-18 17:12:02,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-08-18 17:12:02,951 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 30 [2020-08-18 17:12:02,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:12:02,951 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-08-18 17:12:02,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 17:12:02,952 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-08-18 17:12:02,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 17:12:02,953 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:12:02,953 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] [2020-08-18 17:12:02,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:12:02,954 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:12:02,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:12:02,955 INFO L82 PathProgramCache]: Analyzing trace with hash -552343525, now seen corresponding path program 1 times [2020-08-18 17:12:02,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:12:02,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261502218] [2020-08-18 17:12:02,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:12:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:12:03,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:12:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:12:03,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:12:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:12:03,145 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 17:12:03,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261502218] [2020-08-18 17:12:03,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:12:03,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 17:12:03,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537331632] [2020-08-18 17:12:03,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 17:12:03,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:12:03,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 17:12:03,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:12:03,153 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2020-08-18 17:12:03,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:12:03,417 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2020-08-18 17:12:03,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 17:12:03,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-18 17:12:03,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:12:03,422 INFO L225 Difference]: With dead ends: 83 [2020-08-18 17:12:03,422 INFO L226 Difference]: Without dead ends: 57 [2020-08-18 17:12:03,424 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 [2020-08-18 17:12:03,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-18 17:12:03,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2020-08-18 17:12:03,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-18 17:12:03,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-08-18 17:12:03,454 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 30 [2020-08-18 17:12:03,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:12:03,455 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-08-18 17:12:03,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 17:12:03,455 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-08-18 17:12:03,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-18 17:12:03,458 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:12:03,458 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, 1, 1] [2020-08-18 17:12:03,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:12:03,460 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:12:03,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:12:03,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1488976591, now seen corresponding path program 1 times [2020-08-18 17:12:03,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:12:03,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115463226] [2020-08-18 17:12:03,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:12:03,535 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-18 17:12:03,535 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-18 17:12:03,535 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 17:12:03,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 17:12:03,558 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-18 17:12:03,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:12:03 BoogieIcfgContainer [2020-08-18 17:12:03,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 17:12:03,562 INFO L168 Benchmark]: Toolchain (without parser) took 2063.00 ms. Allocated memory was 140.5 MB in the beginning and 234.9 MB in the end (delta: 94.4 MB). Free memory was 103.4 MB in the beginning and 204.3 MB in the end (delta: -100.9 MB). Peak memory consumption was 82.4 MB. Max. memory is 7.1 GB. [2020-08-18 17:12:03,563 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 17:12:03,564 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.43 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 MB in the beginning and 92.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-08-18 17:12:03,565 INFO L168 Benchmark]: Boogie Preprocessor took 135.30 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 92.3 MB in the beginning and 180.2 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-18 17:12:03,566 INFO L168 Benchmark]: RCFGBuilder took 395.79 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 159.4 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2020-08-18 17:12:03,567 INFO L168 Benchmark]: TraceAbstraction took 1242.65 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 158.7 MB in the beginning and 204.3 MB in the end (delta: -45.6 MB). Peak memory consumption was 75.4 MB. Max. memory is 7.1 GB. [2020-08-18 17:12:03,571 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 283.43 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 MB in the beginning and 92.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.30 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 92.3 MB in the beginning and 180.2 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 395.79 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 159.4 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1242.65 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 158.7 MB in the beginning and 204.3 MB in the end (delta: -45.6 MB). Peak memory consumption was 75.4 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 sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i