/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ssinaf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:02:36,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:02:36,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:02:36,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:02:36,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:02:36,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:02:36,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:02:36,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:02:36,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:02:36,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:02:36,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:02:36,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:02:36,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:02:36,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:02:36,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:02:36,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:02:36,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:02:36,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:02:36,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:02:36,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:02:36,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:02:36,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:02:36,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:02:36,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:02:36,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 15:02:36,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:02:36,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:02:36,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:02:36,821 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 [2020-08-21 15:02:36,864 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:02:36,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:02:36,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:02:36,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:02:36,867 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:02:36,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:02:36,868 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:02:36,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:02:36,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:02:36,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:02:36,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:02:36,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:02:36,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:02:36,870 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:02:36,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:02:36,871 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:02:36,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:02:36,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:02:36,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:02:36,872 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:02:36,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:02:36,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:02:36,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:02:36,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:02:36,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:02:36,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:02:36,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:02:36,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:02:36,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:02:36,874 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 -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-21 15:02:37,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:02:37,173 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:02:37,176 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:02:37,178 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:02:37,178 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:02:37,179 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ssinaf.c [2020-08-21 15:02:37,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c383d45b9/5d752d1905fc4990ac53c30c0975f641/FLAG13ec373c6 [2020-08-21 15:02:37,697 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:02:37,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ssinaf.c [2020-08-21 15:02:37,705 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c383d45b9/5d752d1905fc4990ac53c30c0975f641/FLAG13ec373c6 [2020-08-21 15:02:38,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c383d45b9/5d752d1905fc4990ac53c30c0975f641 [2020-08-21 15:02:38,115 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:02:38,117 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:02:38,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:02:38,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:02:38,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:02:38,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:02:38" (1/1) ... [2020-08-21 15:02:38,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6256357c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:38, skipping insertion in model container [2020-08-21 15:02:38,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:02:38" (1/1) ... [2020-08-21 15:02:38,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:02:38,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:02:38,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:02:38,341 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:02:38,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:02:38,467 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:02:38,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:38 WrapperNode [2020-08-21 15:02:38,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:02:38,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:02:38,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:02:38,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:02:38,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:38" (1/1) ... [2020-08-21 15:02:38,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:38" (1/1) ... [2020-08-21 15:02:38,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:38" (1/1) ... [2020-08-21 15:02:38,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:38" (1/1) ... [2020-08-21 15:02:38,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:38" (1/1) ... [2020-08-21 15:02:38,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:38" (1/1) ... [2020-08-21 15:02:38,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:38" (1/1) ... [2020-08-21 15:02:38,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:02:38,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:02:38,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:02:38,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:02:38,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:38" (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 [2020-08-21 15:02:38,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:02:38,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:02:38,576 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 15:02:38,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 15:02:38,576 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:02:38,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:02:38,577 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 15:02:38,577 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 15:02:38,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 15:02:38,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:02:38,577 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:02:38,577 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:02:38,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:02:38,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:02:38,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:02:38,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:02:38,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:02:38,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:02:38,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:02:38,864 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:02:38,865 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-21 15:02:38,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:02:38 BoogieIcfgContainer [2020-08-21 15:02:38,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:02:38,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:02:38,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:02:38,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:02:38,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:02:38" (1/3) ... [2020-08-21 15:02:38,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fce9587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:02:38, skipping insertion in model container [2020-08-21 15:02:38,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:38" (2/3) ... [2020-08-21 15:02:38,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fce9587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:02:38, skipping insertion in model container [2020-08-21 15:02:38,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:02:38" (3/3) ... [2020-08-21 15:02:38,878 INFO L109 eAbstractionObserver]: Analyzing ICFG ssinaf.c [2020-08-21 15:02:38,889 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:02:38,897 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:02:38,912 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:02:38,972 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:02:38,973 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:02:38,973 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:02:38,973 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:02:38,973 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:02:38,973 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:02:38,976 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:02:38,976 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:02:39,007 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-08-21 15:02:39,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 15:02:39,024 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:02:39,025 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] [2020-08-21 15:02:39,026 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:02:39,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:02:39,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1994596369, now seen corresponding path program 1 times [2020-08-21 15:02:39,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:02:39,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318650321] [2020-08-21 15:02:39,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:02:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:39,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:02:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:39,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:02:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:39,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:02:39,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318650321] [2020-08-21 15:02:39,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:02:39,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:02:39,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008478217] [2020-08-21 15:02:39,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:02:39,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:02:39,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:02:39,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:02:39,272 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2020-08-21 15:02:39,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:02:39,446 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-08-21 15:02:39,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:02:39,448 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-08-21 15:02:39,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:02:39,467 INFO L225 Difference]: With dead ends: 76 [2020-08-21 15:02:39,467 INFO L226 Difference]: Without dead ends: 38 [2020-08-21 15:02:39,478 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 [2020-08-21 15:02:39,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-21 15:02:39,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-21 15:02:39,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-21 15:02:39,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-08-21 15:02:39,523 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 28 [2020-08-21 15:02:39,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:02:39,523 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-08-21 15:02:39,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:02:39,524 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-08-21 15:02:39,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 15:02:39,525 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:02:39,526 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] [2020-08-21 15:02:39,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:02:39,527 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:02:39,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:02:39,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1530390023, now seen corresponding path program 1 times [2020-08-21 15:02:39,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:02:39,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876858154] [2020-08-21 15:02:39,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:02:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:39,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:02:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:39,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:02:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:39,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:02:39,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876858154] [2020-08-21 15:02:39,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:02:39,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:02:39,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418019424] [2020-08-21 15:02:39,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:02:39,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:02:39,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:02:39,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:02:39,683 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2020-08-21 15:02:39,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:02:39,912 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2020-08-21 15:02:39,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 15:02:39,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-08-21 15:02:39,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:02:39,916 INFO L225 Difference]: With dead ends: 75 [2020-08-21 15:02:39,916 INFO L226 Difference]: Without dead ends: 52 [2020-08-21 15:02:39,918 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 [2020-08-21 15:02:39,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-21 15:02:39,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2020-08-21 15:02:39,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-21 15:02:39,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-08-21 15:02:39,934 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2020-08-21 15:02:39,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:02:39,935 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-08-21 15:02:39,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:02:39,935 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-08-21 15:02:39,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-21 15:02:39,936 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:02:39,937 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] [2020-08-21 15:02:39,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:02:39,937 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:02:39,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:02:39,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1357692925, now seen corresponding path program 1 times [2020-08-21 15:02:39,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:02:39,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738552703] [2020-08-21 15:02:39,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:02:39,977 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-21 15:02:39,977 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-21 15:02:39,977 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 15:02:39,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:02:40,012 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-21 15:02:40,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:02:40 BoogieIcfgContainer [2020-08-21 15:02:40,013 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:02:40,016 INFO L168 Benchmark]: Toolchain (without parser) took 1898.10 ms. Allocated memory was 141.6 MB in the beginning and 231.7 MB in the end (delta: 90.2 MB). Free memory was 104.2 MB in the beginning and 201.1 MB in the end (delta: -96.9 MB). Peak memory consumption was 79.7 MB. Max. memory is 7.1 GB. [2020-08-21 15:02:40,017 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-21 15:02:40,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.61 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 104.0 MB in the beginning and 183.0 MB in the end (delta: -79.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-08-21 15:02:40,019 INFO L168 Benchmark]: Boogie Preprocessor took 43.72 ms. Allocated memory is still 204.5 MB. Free memory was 183.0 MB in the beginning and 180.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-21 15:02:40,020 INFO L168 Benchmark]: RCFGBuilder took 356.50 ms. Allocated memory is still 204.5 MB. Free memory was 180.7 MB in the beginning and 160.7 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-08-21 15:02:40,021 INFO L168 Benchmark]: TraceAbstraction took 1142.16 ms. Allocated memory was 204.5 MB in the beginning and 231.7 MB in the end (delta: 27.3 MB). Free memory was 160.7 MB in the beginning and 201.1 MB in the end (delta: -40.4 MB). Peak memory consumption was 73.3 MB. Max. memory is 7.1 GB. [2020-08-21 15:02:40,025 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 350.61 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 104.0 MB in the beginning and 183.0 MB in the end (delta: -79.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.72 ms. Allocated memory is still 204.5 MB. Free memory was 183.0 MB in the beginning and 180.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 356.50 ms. Allocated memory is still 204.5 MB. Free memory was 180.7 MB in the beginning and 160.7 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1142.16 ms. Allocated memory was 204.5 MB in the beginning and 231.7 MB in the end (delta: 27.3 MB). Free memory was 160.7 MB in the beginning and 201.1 MB in the end (delta: -40.4 MB). Peak memory consumption was 73.3 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 sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i