/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/ifcompf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:59:53,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:59:53,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:59:53,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 22:59:53,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 22:59:53,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 22:59:53,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 22:59:53,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 22:59:53,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 22:59:53,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 22:59:53,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 22:59:53,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 22:59:53,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:59:53,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:59:53,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:59:53,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:59:53,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:59:53,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:59:53,507 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:59:53,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:59:53,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:59:53,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:59:53,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:59:53,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:59:53,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 22:59:53,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:59:53,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:59:53,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:59:53,538 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 22:59:53,555 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:59:53,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:59:53,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:59:53,557 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:59:53,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:59:53,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:59:53,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:59:53,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:59:53,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:59:53,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:59:53,559 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:59:53,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:59:53,559 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:59:53,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:59:53,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:59:53,560 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:59:53,560 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:59:53,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:59:53,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:59:53,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:59:53,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:59:53,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:59:53,562 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 [2020-08-22 22:59:53,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:59:53,894 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:59:53,898 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:59:53,899 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:59:53,900 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:59:53,901 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifcompf.c [2020-08-22 22:59:53,966 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8acad935/1cea501096724c18a6a79ae708026907/FLAGb58ebce2d [2020-08-22 22:59:54,473 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:59:54,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifcompf.c [2020-08-22 22:59:54,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8acad935/1cea501096724c18a6a79ae708026907/FLAGb58ebce2d [2020-08-22 22:59:54,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8acad935/1cea501096724c18a6a79ae708026907 [2020-08-22 22:59:54,857 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:59:54,859 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:59:54,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:59:54,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:59:54,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:59:54,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:59:54" (1/1) ... [2020-08-22 22:59:54,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@183f34bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:54, skipping insertion in model container [2020-08-22 22:59:54,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:59:54" (1/1) ... [2020-08-22 22:59:54,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:59:54,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:59:55,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:59:55,094 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:59:55,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:59:55,131 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:59:55,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:55 WrapperNode [2020-08-22 22:59:55,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:59:55,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:59:55,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:59:55,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:59:55,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:55" (1/1) ... [2020-08-22 22:59:55,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:55" (1/1) ... [2020-08-22 22:59:55,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:55" (1/1) ... [2020-08-22 22:59:55,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:55" (1/1) ... [2020-08-22 22:59:55,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:55" (1/1) ... [2020-08-22 22:59:55,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:55" (1/1) ... [2020-08-22 22:59:55,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:55" (1/1) ... [2020-08-22 22:59:55,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:59:55,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:59:55,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:59:55,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:59:55,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:59:55,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:59:55,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:59:55,322 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 22:59:55,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 22:59:55,323 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:59:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:59:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 22:59:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 22:59:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 22:59:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 22:59:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 22:59:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:59:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 22:59:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 22:59:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 22:59:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:59:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:59:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 22:59:55,690 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:59:55,690 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 22:59:55,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:59:55 BoogieIcfgContainer [2020-08-22 22:59:55,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:59:55,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:59:55,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:59:55,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:59:55,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:59:54" (1/3) ... [2020-08-22 22:59:55,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d9000f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:59:55, skipping insertion in model container [2020-08-22 22:59:55,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:55" (2/3) ... [2020-08-22 22:59:55,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d9000f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:59:55, skipping insertion in model container [2020-08-22 22:59:55,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:59:55" (3/3) ... [2020-08-22 22:59:55,718 INFO L109 eAbstractionObserver]: Analyzing ICFG ifcompf.c [2020-08-22 22:59:55,729 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:59:55,736 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 22:59:55,747 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 22:59:55,766 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:59:55,766 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:59:55,766 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:59:55,767 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:59:55,767 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:59:55,767 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:59:55,767 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:59:55,767 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:59:55,784 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-08-22 22:59:55,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 22:59:55,796 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:59:55,797 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] [2020-08-22 22:59:55,798 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:59:55,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:59:55,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1638267314, now seen corresponding path program 1 times [2020-08-22 22:59:55,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:59:55,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246632955] [2020-08-22 22:59:55,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:59:55,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:56,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:59:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:56,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 22:59:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:56,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:59:56,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246632955] [2020-08-22 22:59:56,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:59:56,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 22:59:56,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888373572] [2020-08-22 22:59:56,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 22:59:56,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:59:56,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 22:59:56,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:59:56,072 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 3 states. [2020-08-22 22:59:56,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:59:56,317 INFO L93 Difference]: Finished difference Result 141 states and 166 transitions. [2020-08-22 22:59:56,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 22:59:56,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-08-22 22:59:56,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:59:56,330 INFO L225 Difference]: With dead ends: 141 [2020-08-22 22:59:56,330 INFO L226 Difference]: Without dead ends: 72 [2020-08-22 22:59:56,335 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 [2020-08-22 22:59:56,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-08-22 22:59:56,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-08-22 22:59:56,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-08-22 22:59:56,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2020-08-22 22:59:56,390 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 37 [2020-08-22 22:59:56,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:59:56,390 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2020-08-22 22:59:56,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 22:59:56,391 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2020-08-22 22:59:56,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 22:59:56,393 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:59:56,393 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] [2020-08-22 22:59:56,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:59:56,394 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:59:56,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:59:56,395 INFO L82 PathProgramCache]: Analyzing trace with hash -556138909, now seen corresponding path program 1 times [2020-08-22 22:59:56,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:59:56,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594648328] [2020-08-22 22:59:56,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:59:56,423 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 22:59:56,423 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-22 22:59:56,424 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 22:59:56,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:59:56,451 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-22 22:59:56,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 10:59:56 BoogieIcfgContainer [2020-08-22 22:59:56,452 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 22:59:56,455 INFO L168 Benchmark]: Toolchain (without parser) took 1595.36 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 103.6 MB in the beginning and 112.4 MB in the end (delta: -8.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. [2020-08-22 22:59:56,456 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-22 22:59:56,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.07 ms. Allocated memory is still 139.5 MB. Free memory was 103.2 MB in the beginning and 92.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-08-22 22:59:56,458 INFO L168 Benchmark]: Boogie Preprocessor took 129.05 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 92.7 MB in the beginning and 180.4 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-08-22 22:59:56,459 INFO L168 Benchmark]: RCFGBuilder took 438.95 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 157.6 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-22 22:59:56,460 INFO L168 Benchmark]: TraceAbstraction took 745.32 ms. Allocated memory is still 202.9 MB. Free memory was 157.6 MB in the beginning and 112.4 MB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. [2020-08-22 22:59:56,464 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 272.07 ms. Allocated memory is still 139.5 MB. Free memory was 103.2 MB in the beginning and 92.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.05 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 92.7 MB in the beginning and 180.4 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 438.95 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 157.6 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 745.32 ms. Allocated memory is still 202.9 MB. Free memory was 157.6 MB in the beginning and 112.4 MB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 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); [L28] long long *c = malloc(sizeof(long long)*N); [L30] i=0 [L30] COND FALSE !(i