/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/modsf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:09:34,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:09:34,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:09:34,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:09:34,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:09:34,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:09:34,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:09:34,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:09:34,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:09:34,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:09:34,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:09:34,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:09:34,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:09:34,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:09:34,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:09:34,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:09:34,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:09:34,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:09:34,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:09:34,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:09:34,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:09:34,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:09:34,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:09:34,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:09:34,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 23:09:34,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 23:09:34,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 23:09:34,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 23:09:34,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 23:09:34,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 23:09:34,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 23:09:34,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 23:09:34,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 23:09:34,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 23:09:34,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 23:09:34,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 23:09:34,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 23:09:34,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 23:09:34,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:09:34,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:09:34,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:09:34,618 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 23:09:34,637 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:09:34,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:09:34,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:09:34,641 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:09:34,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:09:34,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:09:34,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:09:34,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:09:34,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:09:34,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:09:34,643 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:09:34,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:09:34,644 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:09:34,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:09:34,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:09:34,644 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:09:34,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:09:34,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:09:34,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:09:34,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:09:34,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:09:34,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:09:34,646 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 23:09:35,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:09:35,077 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:09:35,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:09:35,083 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:09:35,083 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:09:35,084 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modsf.c [2020-09-04 23:09:35,161 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1847f5a3f/853fc015900c40858eb28d40381cdbd9/FLAGfcadbfb65 [2020-09-04 23:09:35,669 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:09:35,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/modsf.c [2020-09-04 23:09:35,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1847f5a3f/853fc015900c40858eb28d40381cdbd9/FLAGfcadbfb65 [2020-09-04 23:09:36,021 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1847f5a3f/853fc015900c40858eb28d40381cdbd9 [2020-09-04 23:09:36,035 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:09:36,038 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:09:36,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:09:36,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:09:36,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:09:36,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:09:36" (1/1) ... [2020-09-04 23:09:36,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:36, skipping insertion in model container [2020-09-04 23:09:36,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:09:36" (1/1) ... [2020-09-04 23:09:36,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:09:36,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:09:36,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:09:36,309 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:09:36,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:09:36,443 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:09:36,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:36 WrapperNode [2020-09-04 23:09:36,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:09:36,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:09:36,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:09:36,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:09:36,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:36" (1/1) ... [2020-09-04 23:09:36,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:36" (1/1) ... [2020-09-04 23:09:36,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:36" (1/1) ... [2020-09-04 23:09:36,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:36" (1/1) ... [2020-09-04 23:09:36,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:36" (1/1) ... [2020-09-04 23:09:36,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:36" (1/1) ... [2020-09-04 23:09:36,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:36" (1/1) ... [2020-09-04 23:09:36,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:09:36,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:09:36,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:09:36,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:09:36,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:36" (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 23:09:36,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:09:36,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:09:36,579 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 23:09:36,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 23:09:36,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:09:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:09:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 23:09:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 23:09:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:09:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 23:09:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 23:09:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:09:36,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 23:09:36,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 23:09:36,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 23:09:36,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 23:09:36,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 23:09:36,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:09:36,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:09:36,963 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:09:36,964 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 23:09:36,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:09:36 BoogieIcfgContainer [2020-09-04 23:09:36,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:09:36,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:09:36,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:09:36,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:09:36,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:09:36" (1/3) ... [2020-09-04 23:09:36,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf60a29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:09:36, skipping insertion in model container [2020-09-04 23:09:36,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:36" (2/3) ... [2020-09-04 23:09:36,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf60a29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:09:36, skipping insertion in model container [2020-09-04 23:09:36,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:09:36" (3/3) ... [2020-09-04 23:09:36,979 INFO L109 eAbstractionObserver]: Analyzing ICFG modsf.c [2020-09-04 23:09:36,989 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:09:36,997 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:09:37,016 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:09:37,042 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:09:37,042 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:09:37,042 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:09:37,042 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:09:37,042 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:09:37,043 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:09:37,043 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:09:37,043 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:09:37,060 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2020-09-04 23:09:37,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 23:09:37,073 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:37,074 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] [2020-09-04 23:09:37,074 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:37,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:37,081 INFO L82 PathProgramCache]: Analyzing trace with hash 731228111, now seen corresponding path program 1 times [2020-09-04 23:09:37,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:37,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209339507] [2020-09-04 23:09:37,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:37,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:09:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:37,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 23:09:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:37,334 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 23:09:37,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209339507] [2020-09-04 23:09:37,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:09:37,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 23:09:37,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715000846] [2020-09-04 23:09:37,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 23:09:37,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:09:37,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 23:09:37,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 23:09:37,366 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 3 states. [2020-09-04 23:09:37,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:09:37,588 INFO L93 Difference]: Finished difference Result 145 states and 168 transitions. [2020-09-04 23:09:37,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 23:09:37,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-09-04 23:09:37,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:09:37,603 INFO L225 Difference]: With dead ends: 145 [2020-09-04 23:09:37,603 INFO L226 Difference]: Without dead ends: 72 [2020-09-04 23:09:37,608 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 23:09:37,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-04 23:09:37,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-09-04 23:09:37,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-04 23:09:37,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-09-04 23:09:37,666 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 37 [2020-09-04 23:09:37,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:09:37,667 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-09-04 23:09:37,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 23:09:37,668 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-09-04 23:09:37,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 23:09:37,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:37,670 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] [2020-09-04 23:09:37,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:09:37,670 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:37,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:37,671 INFO L82 PathProgramCache]: Analyzing trace with hash 681190783, now seen corresponding path program 1 times [2020-09-04 23:09:37,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:37,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550835506] [2020-09-04 23:09:37,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:37,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:09:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:37,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 23:09:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:37,863 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 23:09:37,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550835506] [2020-09-04 23:09:37,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:09:37,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 23:09:37,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563802440] [2020-09-04 23:09:37,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 23:09:37,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:09:37,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 23:09:37,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 23:09:37,867 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 5 states. [2020-09-04 23:09:38,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:09:38,228 INFO L93 Difference]: Finished difference Result 150 states and 162 transitions. [2020-09-04 23:09:38,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 23:09:38,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-09-04 23:09:38,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:09:38,233 INFO L225 Difference]: With dead ends: 150 [2020-09-04 23:09:38,233 INFO L226 Difference]: Without dead ends: 106 [2020-09-04 23:09:38,234 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 23:09:38,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-04 23:09:38,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 76. [2020-09-04 23:09:38,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-04 23:09:38,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-09-04 23:09:38,283 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 37 [2020-09-04 23:09:38,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:09:38,284 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-09-04 23:09:38,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 23:09:38,286 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-09-04 23:09:38,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-04 23:09:38,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:38,291 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] [2020-09-04 23:09:38,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:09:38,292 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:38,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:38,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1093467533, now seen corresponding path program 1 times [2020-09-04 23:09:38,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:38,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438544374] [2020-09-04 23:09:38,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:38,348 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 23:09:38,348 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-04 23:09:38,348 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 23:09:38,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 23:09:38,375 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-04 23:09:38,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:09:38 BoogieIcfgContainer [2020-09-04 23:09:38,375 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:09:38,379 INFO L168 Benchmark]: Toolchain (without parser) took 2340.60 ms. Allocated memory was 147.8 MB in the beginning and 232.8 MB in the end (delta: 84.9 MB). Free memory was 103.4 MB in the beginning and 180.2 MB in the end (delta: -76.8 MB). Peak memory consumption was 8.2 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:38,380 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-04 23:09:38,381 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.79 ms. Allocated memory was 147.8 MB in the beginning and 206.0 MB in the end (delta: 58.2 MB). Free memory was 103.2 MB in the beginning and 184.4 MB in the end (delta: -81.2 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:38,382 INFO L168 Benchmark]: Boogie Preprocessor took 57.64 ms. Allocated memory is still 206.0 MB. Free memory was 184.4 MB in the beginning and 182.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:38,383 INFO L168 Benchmark]: RCFGBuilder took 467.07 ms. Allocated memory is still 206.0 MB. Free memory was 182.2 MB in the beginning and 160.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:38,384 INFO L168 Benchmark]: TraceAbstraction took 1404.74 ms. Allocated memory was 206.0 MB in the beginning and 232.8 MB in the end (delta: 26.7 MB). Free memory was 159.7 MB in the beginning and 180.2 MB in the end (delta: -20.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:38,388 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 405.79 ms. Allocated memory was 147.8 MB in the beginning and 206.0 MB in the end (delta: 58.2 MB). Free memory was 103.2 MB in the beginning and 184.4 MB in the end (delta: -81.2 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.64 ms. Allocated memory is still 206.0 MB. Free memory was 184.4 MB in the beginning and 182.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 467.07 ms. Allocated memory is still 206.0 MB. Free memory was 182.2 MB in the beginning and 160.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1404.74 ms. Allocated memory was 206.0 MB in the beginning and 232.8 MB in the end (delta: 26.7 MB). Free memory was 159.7 MB in the beginning and 180.2 MB in the end (delta: -20.4 MB). Peak memory consumption was 6.3 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