/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/ssinaf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:10:12,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:10:12,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:10:12,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:10:12,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:10:12,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:10:12,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:10:12,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:10:12,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:10:12,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:10:12,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:10:12,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:10:12,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:10:12,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:10:12,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:10:12,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:10:12,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:10:12,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:10:12,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:10:12,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:10:12,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:10:12,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:10:12,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:10:12,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:10:12,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 23:10:12,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 23:10:12,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 23:10:12,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 23:10:12,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 23:10:12,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 23:10:12,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 23:10:12,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 23:10:12,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 23:10:12,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 23:10:12,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 23:10:12,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 23:10:12,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 23:10:12,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 23:10:12,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:10:12,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:10:12,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:10:12,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 23:10:12,224 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:10:12,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:10:12,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:10:12,226 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:10:12,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:10:12,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:10:12,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:10:12,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:10:12,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:10:12,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:10:12,227 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:10:12,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:10:12,228 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:10:12,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:10:12,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:10:12,228 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:10:12,229 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:10:12,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:10:12,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:10:12,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:10:12,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:10:12,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:10:12,230 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-09-04 23:10:12,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:10:12,739 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:10:12,743 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:10:12,745 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:10:12,746 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:10:12,747 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ssinaf.c [2020-09-04 23:10:12,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8fec79cc/72f0ac9751f84cbe989064e9aa25d30f/FLAG91c92bb13 [2020-09-04 23:10:13,408 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:10:13,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ssinaf.c [2020-09-04 23:10:13,423 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8fec79cc/72f0ac9751f84cbe989064e9aa25d30f/FLAG91c92bb13 [2020-09-04 23:10:13,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8fec79cc/72f0ac9751f84cbe989064e9aa25d30f [2020-09-04 23:10:13,756 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:10:13,758 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:10:13,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:10:13,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:10:13,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:10:13,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:10:13" (1/1) ... [2020-09-04 23:10:13,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155d8a11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:13, skipping insertion in model container [2020-09-04 23:10:13,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:10:13" (1/1) ... [2020-09-04 23:10:13,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:10:13,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:10:14,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:10:14,047 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:10:14,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:10:14,173 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:10:14,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:14 WrapperNode [2020-09-04 23:10:14,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:10:14,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:10:14,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:10:14,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:10:14,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:14" (1/1) ... [2020-09-04 23:10:14,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:14" (1/1) ... [2020-09-04 23:10:14,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:14" (1/1) ... [2020-09-04 23:10:14,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:14" (1/1) ... [2020-09-04 23:10:14,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:14" (1/1) ... [2020-09-04 23:10:14,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:14" (1/1) ... [2020-09-04 23:10:14,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:14" (1/1) ... [2020-09-04 23:10:14,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:10:14,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:10:14,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:10:14,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:10:14,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:10:14,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:10:14,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:10:14,311 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 23:10:14,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 23:10:14,312 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:10:14,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:10:14,312 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 23:10:14,312 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 23:10:14,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:10:14,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 23:10:14,313 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 23:10:14,313 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:10:14,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 23:10:14,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 23:10:14,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 23:10:14,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 23:10:14,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 23:10:14,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:10:14,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:10:14,690 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:10:14,690 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-04 23:10:14,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:10:14 BoogieIcfgContainer [2020-09-04 23:10:14,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:10:14,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:10:14,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:10:14,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:10:14,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:10:13" (1/3) ... [2020-09-04 23:10:14,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780c146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:10:14, skipping insertion in model container [2020-09-04 23:10:14,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:14" (2/3) ... [2020-09-04 23:10:14,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780c146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:10:14, skipping insertion in model container [2020-09-04 23:10:14,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:10:14" (3/3) ... [2020-09-04 23:10:14,708 INFO L109 eAbstractionObserver]: Analyzing ICFG ssinaf.c [2020-09-04 23:10:14,722 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:10:14,734 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:10:14,778 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:10:14,803 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:10:14,803 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:10:14,804 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:10:14,804 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:10:14,804 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:10:14,804 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:10:14,804 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:10:14,805 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:10:14,824 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-09-04 23:10:14,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-04 23:10:14,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:14,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:10:14,841 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:14,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:14,848 INFO L82 PathProgramCache]: Analyzing trace with hash 2063962602, now seen corresponding path program 1 times [2020-09-04 23:10:14,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:14,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102589316] [2020-09-04 23:10:14,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:15,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:15,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 23:10:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:15,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:10:15,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102589316] [2020-09-04 23:10:15,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:10:15,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 23:10:15,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977777617] [2020-09-04 23:10:15,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 23:10:15,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:15,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 23:10:15,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 23:10:15,165 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 3 states. [2020-09-04 23:10:15,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:15,425 INFO L93 Difference]: Finished difference Result 167 states and 194 transitions. [2020-09-04 23:10:15,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 23:10:15,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-09-04 23:10:15,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:15,440 INFO L225 Difference]: With dead ends: 167 [2020-09-04 23:10:15,440 INFO L226 Difference]: Without dead ends: 83 [2020-09-04 23:10:15,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 23:10:15,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-04 23:10:15,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-09-04 23:10:15,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-04 23:10:15,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2020-09-04 23:10:15,511 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 40 [2020-09-04 23:10:15,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:15,511 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2020-09-04 23:10:15,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 23:10:15,512 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2020-09-04 23:10:15,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-04 23:10:15,514 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:15,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:10:15,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:10:15,515 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:15,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:15,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1243022369, now seen corresponding path program 1 times [2020-09-04 23:10:15,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:15,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135437427] [2020-09-04 23:10:15,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:15,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:15,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 23:10:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:15,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:10:15,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135437427] [2020-09-04 23:10:15,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:10:15,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 23:10:15,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986623792] [2020-09-04 23:10:15,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 23:10:15,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:15,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 23:10:15,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 23:10:15,664 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand 5 states. [2020-09-04 23:10:15,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:15,992 INFO L93 Difference]: Finished difference Result 180 states and 195 transitions. [2020-09-04 23:10:15,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 23:10:15,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-09-04 23:10:15,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:15,998 INFO L225 Difference]: With dead ends: 180 [2020-09-04 23:10:15,998 INFO L226 Difference]: Without dead ends: 125 [2020-09-04 23:10:15,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-04 23:10:16,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-04 23:10:16,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 88. [2020-09-04 23:10:16,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-04 23:10:16,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2020-09-04 23:10:16,024 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 40 [2020-09-04 23:10:16,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:16,024 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2020-09-04 23:10:16,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 23:10:16,025 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2020-09-04 23:10:16,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-04 23:10:16,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:16,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:10:16,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:10:16,028 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:16,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:16,028 INFO L82 PathProgramCache]: Analyzing trace with hash -88576135, now seen corresponding path program 1 times [2020-09-04 23:10:16,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:16,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273229281] [2020-09-04 23:10:16,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:16,083 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 23:10:16,083 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-04 23:10:16,084 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 23:10:16,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 23:10:16,126 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-04 23:10:16,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:10:16 BoogieIcfgContainer [2020-09-04 23:10:16,127 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:10:16,135 INFO L168 Benchmark]: Toolchain (without parser) took 2375.20 ms. Allocated memory was 138.9 MB in the beginning and 235.9 MB in the end (delta: 97.0 MB). Free memory was 103.2 MB in the beginning and 176.3 MB in the end (delta: -73.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:16,137 INFO L168 Benchmark]: CDTParser took 1.03 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 23:10:16,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.99 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 181.3 MB in the end (delta: -78.3 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:16,141 INFO L168 Benchmark]: Boogie Preprocessor took 52.00 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 179.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:16,142 INFO L168 Benchmark]: RCFGBuilder took 470.79 ms. Allocated memory is still 202.4 MB. Free memory was 178.3 MB in the beginning and 154.4 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:16,143 INFO L168 Benchmark]: TraceAbstraction took 1431.56 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 154.4 MB in the beginning and 176.3 MB in the end (delta: -21.8 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:16,157 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.03 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 414.99 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 181.3 MB in the end (delta: -78.3 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 52.00 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 179.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 470.79 ms. Allocated memory is still 202.4 MB. Free memory was 178.3 MB in the beginning and 154.4 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1431.56 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 154.4 MB in the beginning and 176.3 MB in the end (delta: -21.8 MB). Peak memory consumption was 11.7 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