/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ss2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:28:39,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:28:39,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:28:39,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:28:39,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:28:39,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:28:39,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:28:39,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:28:39,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:28:39,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:28:39,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:28:39,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:28:39,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:28:39,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:28:39,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:28:39,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:28:39,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:28:39,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:28:39,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:28:39,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:28:39,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:28:39,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:28:39,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:28:39,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:28:39,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:28:39,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:28:39,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:28:39,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:28:39,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:28:39,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-21 10:28:39,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:28:39,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:28:39,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:28:39,632 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 10:28:39,666 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:28:39,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:28:39,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:28:39,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:28:39,668 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:28:39,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:28:39,668 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:28:39,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:28:39,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:28:39,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:28:39,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:28:39,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:28:39,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:28:39,671 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:28:39,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:28:39,671 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:28:39,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:28:39,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:28:39,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:28:39,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:28:39,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:28:39,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:28:39,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:28:39,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:28:39,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:28:39,674 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:28:39,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:28:39,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:28:39,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:28:39,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-21 10:28:40,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:28:40,168 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:28:40,172 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:28:40,174 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:28:40,174 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:28:40,176 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss2f.c [2020-09-21 10:28:40,254 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4710c7d87/5e1c0959f0b94e0a8b6d7503cdf14e79/FLAG9a4319841 [2020-09-21 10:28:40,843 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:28:40,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ss2f.c [2020-09-21 10:28:40,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4710c7d87/5e1c0959f0b94e0a8b6d7503cdf14e79/FLAG9a4319841 [2020-09-21 10:28:41,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4710c7d87/5e1c0959f0b94e0a8b6d7503cdf14e79 [2020-09-21 10:28:41,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:28:41,193 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:28:41,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:28:41,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:28:41,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:28:41,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:28:41" (1/1) ... [2020-09-21 10:28:41,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36687376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:41, skipping insertion in model container [2020-09-21 10:28:41,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:28:41" (1/1) ... [2020-09-21 10:28:41,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:28:41,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:28:41,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:28:41,558 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:28:41,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:28:41,605 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:28:41,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:41 WrapperNode [2020-09-21 10:28:41,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:28:41,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:28:41,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:28:41,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:28:41,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:41" (1/1) ... [2020-09-21 10:28:41,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:41" (1/1) ... [2020-09-21 10:28:41,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:41" (1/1) ... [2020-09-21 10:28:41,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:41" (1/1) ... [2020-09-21 10:28:41,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:41" (1/1) ... [2020-09-21 10:28:41,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:41" (1/1) ... [2020-09-21 10:28:41,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:41" (1/1) ... [2020-09-21 10:28:41,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:28:41,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:28:41,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:28:41,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:28:41,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:28:41,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:28:41,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:28:41,821 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 10:28:41,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 10:28:41,822 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:28:41,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:28:41,822 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 10:28:41,822 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 10:28:41,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 10:28:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:28:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:28:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:28:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:28:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:28:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:28:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:28:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:28:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:28:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:28:42,178 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:28:42,179 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-09-21 10:28:42,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:28:42 BoogieIcfgContainer [2020-09-21 10:28:42,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:28:42,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:28:42,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:28:42,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:28:42,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:28:41" (1/3) ... [2020-09-21 10:28:42,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45557562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:28:42, skipping insertion in model container [2020-09-21 10:28:42,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:41" (2/3) ... [2020-09-21 10:28:42,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45557562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:28:42, skipping insertion in model container [2020-09-21 10:28:42,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:28:42" (3/3) ... [2020-09-21 10:28:42,195 INFO L109 eAbstractionObserver]: Analyzing ICFG ss2f.c [2020-09-21 10:28:42,218 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:28:42,236 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:28:42,265 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:28:42,294 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:28:42,294 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:28:42,294 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:28:42,294 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:28:42,294 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:28:42,294 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:28:42,295 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:28:42,295 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:28:42,316 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-09-21 10:28:42,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 10:28:42,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:42,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:28:42,326 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:42,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:42,333 INFO L82 PathProgramCache]: Analyzing trace with hash -96589013, now seen corresponding path program 1 times [2020-09-21 10:28:42,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:42,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719364935] [2020-09-21 10:28:42,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:42,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:28:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:42,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:28:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:42,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:28:42,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719364935] [2020-09-21 10:28:42,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:28:42,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:28:42,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159096932] [2020-09-21 10:28:42,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:28:42,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:28:42,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:28:42,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:28:42,625 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-09-21 10:28:42,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:28:42,776 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2020-09-21 10:28:42,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:28:42,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-09-21 10:28:42,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:28:42,791 INFO L225 Difference]: With dead ends: 82 [2020-09-21 10:28:42,791 INFO L226 Difference]: Without dead ends: 41 [2020-09-21 10:28:42,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:28:42,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-21 10:28:42,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-09-21 10:28:42,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-21 10:28:42,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-09-21 10:28:42,852 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 30 [2020-09-21 10:28:42,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:28:42,853 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-09-21 10:28:42,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:28:42,853 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-09-21 10:28:42,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 10:28:42,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:42,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:28:42,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:28:42,856 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:42,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:42,856 INFO L82 PathProgramCache]: Analyzing trace with hash -552343525, now seen corresponding path program 1 times [2020-09-21 10:28:42,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:42,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683364391] [2020-09-21 10:28:42,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:42,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:28:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:43,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:28:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:43,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:28:43,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683364391] [2020-09-21 10:28:43,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:28:43,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:28:43,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391254931] [2020-09-21 10:28:43,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:28:43,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:28:43,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:28:43,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:28:43,019 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2020-09-21 10:28:43,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:28:43,241 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2020-09-21 10:28:43,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 10:28:43,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-21 10:28:43,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:28:43,246 INFO L225 Difference]: With dead ends: 83 [2020-09-21 10:28:43,246 INFO L226 Difference]: Without dead ends: 57 [2020-09-21 10:28:43,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:28:43,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-21 10:28:43,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2020-09-21 10:28:43,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-21 10:28:43,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-09-21 10:28:43,266 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 30 [2020-09-21 10:28:43,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:28:43,267 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-09-21 10:28:43,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:28:43,267 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-09-21 10:28:43,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-21 10:28:43,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:43,269 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] [2020-09-21 10:28:43,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:28:43,270 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:43,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:43,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1488976591, now seen corresponding path program 1 times [2020-09-21 10:28:43,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:43,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314977247] [2020-09-21 10:28:43,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:43,353 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-21 10:28:43,353 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-21 10:28:43,354 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:28:43,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:28:43,394 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-21 10:28:43,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:28:43 BoogieIcfgContainer [2020-09-21 10:28:43,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:28:43,411 INFO L168 Benchmark]: Toolchain (without parser) took 2220.41 ms. Allocated memory was 136.8 MB in the beginning and 199.2 MB in the end (delta: 62.4 MB). Free memory was 100.0 MB in the beginning and 87.6 MB in the end (delta: 12.4 MB). Peak memory consumption was 74.8 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:43,413 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-21 10:28:43,414 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.72 ms. Allocated memory is still 136.8 MB. Free memory was 99.3 MB in the beginning and 88.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:43,415 INFO L168 Benchmark]: Boogie Preprocessor took 133.29 ms. Allocated memory was 136.8 MB in the beginning and 199.2 MB in the end (delta: 62.4 MB). Free memory was 88.5 MB in the beginning and 176.4 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:43,416 INFO L168 Benchmark]: RCFGBuilder took 444.75 ms. Allocated memory is still 199.2 MB. Free memory was 176.4 MB in the beginning and 155.3 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:43,419 INFO L168 Benchmark]: TraceAbstraction took 1217.77 ms. Allocated memory is still 199.2 MB. Free memory was 155.3 MB in the beginning and 87.6 MB in the end (delta: 67.7 MB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:43,429 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 412.72 ms. Allocated memory is still 136.8 MB. Free memory was 99.3 MB in the beginning and 88.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.29 ms. Allocated memory was 136.8 MB in the beginning and 199.2 MB in the end (delta: 62.4 MB). Free memory was 88.5 MB in the beginning and 176.4 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 444.75 ms. Allocated memory is still 199.2 MB. Free memory was 176.4 MB in the beginning and 155.3 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1217.77 ms. Allocated memory is still 199.2 MB. Free memory was 155.3 MB in the beginning and 87.6 MB in the end (delta: 67.7 MB). Peak memory consumption was 67.7 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