/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/indp5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 23:00:07,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 23:00:07,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 23:00:07,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 23:00:07,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 23:00:07,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 23:00:07,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 23:00:07,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 23:00:07,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 23:00:07,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 23:00:07,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 23:00:07,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 23:00:07,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 23:00:07,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 23:00:07,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 23:00:07,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 23:00:07,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 23:00:07,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 23:00:07,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 23:00:07,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 23:00:07,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 23:00:07,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 23:00:07,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 23:00:07,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 23:00:07,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 23:00:07,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 23:00:07,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 23:00:07,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 23:00:07,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 23:00:07,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-22 23:00:07,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 23:00:07,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 23:00:07,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 23:00:07,314 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 23:00:07,336 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 23:00:07,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 23:00:07,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 23:00:07,337 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 23:00:07,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 23:00:07,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 23:00:07,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 23:00:07,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 23:00:07,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 23:00:07,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 23:00:07,342 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 23:00:07,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 23:00:07,344 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 23:00:07,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 23:00:07,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 23:00:07,344 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 23:00:07,345 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 23:00:07,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 23:00:07,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:00:07,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 23:00:07,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 23:00:07,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 23:00:07,346 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 23:00:07,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 23:00:07,706 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 23:00:07,709 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 23:00:07,711 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 23:00:07,712 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 23:00:07,712 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp5f.c [2020-08-22 23:00:07,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02c47d4be/8952a65a542e46e8b78128973c9409a9/FLAG510019690 [2020-08-22 23:00:08,304 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 23:00:08,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp5f.c [2020-08-22 23:00:08,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02c47d4be/8952a65a542e46e8b78128973c9409a9/FLAG510019690 [2020-08-22 23:00:08,656 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02c47d4be/8952a65a542e46e8b78128973c9409a9 [2020-08-22 23:00:08,667 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 23:00:08,669 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 23:00:08,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 23:00:08,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 23:00:08,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 23:00:08,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:00:08" (1/1) ... [2020-08-22 23:00:08,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b0c2204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:08, skipping insertion in model container [2020-08-22 23:00:08,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:00:08" (1/1) ... [2020-08-22 23:00:08,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 23:00:08,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 23:00:08,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:00:08,914 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 23:00:08,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:00:09,044 INFO L208 MainTranslator]: Completed translation [2020-08-22 23:00:09,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:09 WrapperNode [2020-08-22 23:00:09,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 23:00:09,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 23:00:09,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 23:00:09,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 23:00:09,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:09" (1/1) ... [2020-08-22 23:00:09,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:09" (1/1) ... [2020-08-22 23:00:09,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:09" (1/1) ... [2020-08-22 23:00:09,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:09" (1/1) ... [2020-08-22 23:00:09,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:09" (1/1) ... [2020-08-22 23:00:09,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:09" (1/1) ... [2020-08-22 23:00:09,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:09" (1/1) ... [2020-08-22 23:00:09,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 23:00:09,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 23:00:09,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 23:00:09,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 23:00:09,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:09" (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 23:00:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 23:00:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 23:00:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 23:00:09,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 23:00:09,177 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 23:00:09,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 23:00:09,177 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 23:00:09,177 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 23:00:09,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 23:00:09,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 23:00:09,179 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 23:00:09,180 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 23:00:09,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 23:00:09,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 23:00:09,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 23:00:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 23:00:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 23:00:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 23:00:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 23:00:09,548 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 23:00:09,548 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 23:00:09,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:00:09 BoogieIcfgContainer [2020-08-22 23:00:09,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 23:00:09,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 23:00:09,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 23:00:09,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 23:00:09,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:00:08" (1/3) ... [2020-08-22 23:00:09,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@589afed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:00:09, skipping insertion in model container [2020-08-22 23:00:09,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:09" (2/3) ... [2020-08-22 23:00:09,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@589afed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:00:09, skipping insertion in model container [2020-08-22 23:00:09,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:00:09" (3/3) ... [2020-08-22 23:00:09,564 INFO L109 eAbstractionObserver]: Analyzing ICFG indp5f.c [2020-08-22 23:00:09,578 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 23:00:09,587 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 23:00:09,603 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 23:00:09,627 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 23:00:09,628 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 23:00:09,628 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 23:00:09,628 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 23:00:09,629 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 23:00:09,629 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 23:00:09,629 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 23:00:09,629 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 23:00:09,650 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-08-22 23:00:09,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 23:00:09,663 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:00:09,664 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 23:00:09,664 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:00:09,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:00:09,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1581664836, now seen corresponding path program 1 times [2020-08-22 23:00:09,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:00:09,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521997078] [2020-08-22 23:00:09,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:00:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:09,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:00:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:09,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 23:00:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:09,925 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 23:00:09,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521997078] [2020-08-22 23:00:09,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:00:09,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 23:00:09,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902465412] [2020-08-22 23:00:09,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 23:00:09,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:00:09,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 23:00:09,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 23:00:09,956 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 3 states. [2020-08-22 23:00:10,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:00:10,221 INFO L93 Difference]: Finished difference Result 143 states and 166 transitions. [2020-08-22 23:00:10,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 23:00:10,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-08-22 23:00:10,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:00:10,234 INFO L225 Difference]: With dead ends: 143 [2020-08-22 23:00:10,235 INFO L226 Difference]: Without dead ends: 68 [2020-08-22 23:00:10,240 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 23:00:10,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-22 23:00:10,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-22 23:00:10,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-22 23:00:10,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-08-22 23:00:10,296 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 37 [2020-08-22 23:00:10,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:00:10,297 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-08-22 23:00:10,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 23:00:10,297 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-08-22 23:00:10,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 23:00:10,299 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:00:10,299 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 23:00:10,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 23:00:10,300 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:00:10,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:00:10,301 INFO L82 PathProgramCache]: Analyzing trace with hash 44636293, now seen corresponding path program 1 times [2020-08-22 23:00:10,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:00:10,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712409955] [2020-08-22 23:00:10,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:00:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:10,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:00:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:10,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 23:00:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:10,426 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 23:00:10,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712409955] [2020-08-22 23:00:10,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:00:10,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 23:00:10,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092494454] [2020-08-22 23:00:10,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 23:00:10,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:00:10,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 23:00:10,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 23:00:10,431 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 5 states. [2020-08-22 23:00:10,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:00:10,736 INFO L93 Difference]: Finished difference Result 138 states and 150 transitions. [2020-08-22 23:00:10,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 23:00:10,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-08-22 23:00:10,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:00:10,739 INFO L225 Difference]: With dead ends: 138 [2020-08-22 23:00:10,740 INFO L226 Difference]: Without dead ends: 98 [2020-08-22 23:00:10,741 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 [2020-08-22 23:00:10,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-08-22 23:00:10,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 73. [2020-08-22 23:00:10,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-08-22 23:00:10,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-08-22 23:00:10,759 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 37 [2020-08-22 23:00:10,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:00:10,759 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-08-22 23:00:10,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 23:00:10,760 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-08-22 23:00:10,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-22 23:00:10,762 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:00:10,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:00:10,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 23:00:10,763 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:00:10,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:00:10,763 INFO L82 PathProgramCache]: Analyzing trace with hash -25889220, now seen corresponding path program 1 times [2020-08-22 23:00:10,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:00:10,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248619109] [2020-08-22 23:00:10,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:00:10,785 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 23:00:10,786 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-22 23:00:10,786 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 23:00:10,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 23:00:10,814 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-22 23:00:10,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 11:00:10 BoogieIcfgContainer [2020-08-22 23:00:10,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 23:00:10,818 INFO L168 Benchmark]: Toolchain (without parser) took 2148.20 ms. Allocated memory was 136.8 MB in the beginning and 229.6 MB in the end (delta: 92.8 MB). Free memory was 101.0 MB in the beginning and 187.7 MB in the end (delta: -86.6 MB). Peak memory consumption was 6.2 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:10,819 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 136.8 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 23:00:10,821 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.32 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 100.8 MB in the beginning and 179.6 MB in the end (delta: -78.8 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:10,822 INFO L168 Benchmark]: Boogie Preprocessor took 50.28 ms. Allocated memory is still 200.8 MB. Free memory was 179.6 MB in the beginning and 177.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:10,823 INFO L168 Benchmark]: RCFGBuilder took 457.46 ms. Allocated memory is still 200.8 MB. Free memory was 177.0 MB in the beginning and 155.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:10,824 INFO L168 Benchmark]: TraceAbstraction took 1259.99 ms. Allocated memory was 200.8 MB in the beginning and 229.6 MB in the end (delta: 28.8 MB). Free memory was 155.0 MB in the beginning and 187.7 MB in the end (delta: -32.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 23:00:10,828 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 136.8 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 375.32 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 100.8 MB in the beginning and 179.6 MB in the end (delta: -78.8 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.28 ms. Allocated memory is still 200.8 MB. Free memory was 179.6 MB in the beginning and 177.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 457.46 ms. Allocated memory is still 200.8 MB. Free memory was 177.0 MB in the beginning and 155.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1259.99 ms. Allocated memory was 200.8 MB in the beginning and 229.6 MB in the end (delta: 28.8 MB). Free memory was 155.0 MB in the beginning and 187.7 MB in the end (delta: -32.6 MB). There was no memory consumed. 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 sum[1]; [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i