/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/eqn5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:09:18,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:09:18,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:09:18,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:09:18,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:09:18,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:09:18,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:09:18,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:09:18,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:09:18,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:09:18,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:09:18,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:09:18,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:09:18,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:09:18,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:09:18,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:09:18,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:09:18,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:09:18,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:09:18,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:09:18,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:09:18,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:09:18,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:09:18,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:09:18,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 23:09:18,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 23:09:19,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 23:09:19,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 23:09:19,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 23:09:19,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 23:09:19,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 23:09:19,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 23:09:19,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 23:09:19,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:09:19,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:09:19,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:09:19,014 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 23:09:19,034 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:09:19,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:09:19,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:09:19,036 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:09:19,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:09:19,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:09:19,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:09:19,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:09:19,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:09:19,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:09:19,039 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:09:19,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:09:19,039 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:09:19,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:09:19,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:09:19,040 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:09:19,041 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:09:19,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:09:19,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:09:19,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:09:19,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:09:19,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:09:19,045 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 23:09:19,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:09:19,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:09:19,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:09:19,550 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:09:19,550 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:09:19,551 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn5f.c [2020-09-04 23:09:19,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30286881b/c525d9def593473983a46abdeb6e3956/FLAGb73e17b15 [2020-09-04 23:09:20,180 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:09:20,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/eqn5f.c [2020-09-04 23:09:20,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30286881b/c525d9def593473983a46abdeb6e3956/FLAGb73e17b15 [2020-09-04 23:09:20,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30286881b/c525d9def593473983a46abdeb6e3956 [2020-09-04 23:09:20,499 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:09:20,501 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:09:20,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:09:20,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:09:20,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:09:20,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:09:20" (1/1) ... [2020-09-04 23:09:20,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78541603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:20, skipping insertion in model container [2020-09-04 23:09:20,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:09:20" (1/1) ... [2020-09-04 23:09:20,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:09:20,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:09:20,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:09:20,860 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:09:20,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:09:20,904 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:09:20,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:20 WrapperNode [2020-09-04 23:09:20,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:09:20,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:09:20,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:09:20,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:09:21,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:20" (1/1) ... [2020-09-04 23:09:21,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:20" (1/1) ... [2020-09-04 23:09:21,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:20" (1/1) ... [2020-09-04 23:09:21,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:20" (1/1) ... [2020-09-04 23:09:21,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:20" (1/1) ... [2020-09-04 23:09:21,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:20" (1/1) ... [2020-09-04 23:09:21,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:20" (1/1) ... [2020-09-04 23:09:21,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:09:21,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:09:21,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:09:21,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:09:21,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:20" (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 23:09:21,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:09:21,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:09:21,120 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 23:09:21,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 23:09:21,120 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:09:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:09:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 23:09:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 23:09:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:09:21,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 23:09:21,121 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 23:09:21,121 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:09:21,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 23:09:21,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 23:09:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 23:09:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:09:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:09:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 23:09:21,497 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:09:21,498 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-04 23:09:21,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:09:21 BoogieIcfgContainer [2020-09-04 23:09:21,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:09:21,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:09:21,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:09:21,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:09:21,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:09:20" (1/3) ... [2020-09-04 23:09:21,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5bf0be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:09:21, skipping insertion in model container [2020-09-04 23:09:21,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:20" (2/3) ... [2020-09-04 23:09:21,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5bf0be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:09:21, skipping insertion in model container [2020-09-04 23:09:21,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:09:21" (3/3) ... [2020-09-04 23:09:21,515 INFO L109 eAbstractionObserver]: Analyzing ICFG eqn5f.c [2020-09-04 23:09:21,525 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:09:21,535 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:09:21,559 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:09:21,588 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:09:21,588 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:09:21,588 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:09:21,589 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:09:21,589 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:09:21,589 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:09:21,589 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:09:21,589 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:09:21,606 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-09-04 23:09:21,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-04 23:09:21,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:21,620 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] [2020-09-04 23:09:21,621 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:21,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:21,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1558850377, now seen corresponding path program 1 times [2020-09-04 23:09:21,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:21,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336929863] [2020-09-04 23:09:21,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:21,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:09:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:21,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 23:09:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:21,947 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 23:09:21,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336929863] [2020-09-04 23:09:21,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:09:21,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 23:09:21,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235945009] [2020-09-04 23:09:21,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 23:09:21,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:09:21,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 23:09:21,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 23:09:21,988 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 3 states. [2020-09-04 23:09:22,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:09:22,160 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2020-09-04 23:09:22,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 23:09:22,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-09-04 23:09:22,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:09:22,174 INFO L225 Difference]: With dead ends: 109 [2020-09-04 23:09:22,174 INFO L226 Difference]: Without dead ends: 56 [2020-09-04 23:09:22,179 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 23:09:22,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-04 23:09:22,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-04 23:09:22,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-04 23:09:22,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-09-04 23:09:22,233 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 35 [2020-09-04 23:09:22,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:09:22,234 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-09-04 23:09:22,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 23:09:22,235 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-09-04 23:09:22,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-04 23:09:22,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:22,236 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] [2020-09-04 23:09:22,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:09:22,237 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:22,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:22,238 INFO L82 PathProgramCache]: Analyzing trace with hash -574468364, now seen corresponding path program 1 times [2020-09-04 23:09:22,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:22,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820199453] [2020-09-04 23:09:22,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:22,268 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 23:09:22,269 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-04 23:09:22,269 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 23:09:22,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:09:22,297 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-04 23:09:22,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:09:22 BoogieIcfgContainer [2020-09-04 23:09:22,298 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:09:22,302 INFO L168 Benchmark]: Toolchain (without parser) took 1799.42 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 103.7 MB in the beginning and 122.2 MB in the end (delta: -18.5 MB). Peak memory consumption was 38.1 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:22,303 INFO L168 Benchmark]: CDTParser took 0.19 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). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 23:09:22,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 402.52 ms. Allocated memory is still 147.8 MB. Free memory was 103.5 MB in the beginning and 93.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:22,305 INFO L168 Benchmark]: Boogie Preprocessor took 128.19 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 93.1 MB in the beginning and 182.0 MB in the end (delta: -88.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:22,306 INFO L168 Benchmark]: RCFGBuilder took 470.29 ms. Allocated memory is still 204.5 MB. Free memory was 182.0 MB in the beginning and 162.7 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:22,307 INFO L168 Benchmark]: TraceAbstraction took 792.58 ms. Allocated memory is still 204.5 MB. Free memory was 162.1 MB in the beginning and 122.2 MB in the end (delta: 39.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:22,311 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 402.52 ms. Allocated memory is still 147.8 MB. Free memory was 103.5 MB in the beginning and 93.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.19 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 93.1 MB in the beginning and 182.0 MB in the end (delta: -88.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 470.29 ms. Allocated memory is still 204.5 MB. Free memory was 182.0 MB in the beginning and 162.7 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 792.58 ms. Allocated memory is still 204.5 MB. Free memory was 162.1 MB in the beginning and 122.2 MB in the end (delta: 39.9 MB). Peak memory consumption was 39.9 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 *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] a[0] = 1 [L30] b[0] = 1 [L31] i=1 [L31] COND FALSE !(i