/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 0.2.0-7d8eed3 [2020-11-07 06:34:23,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 06:34:23,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 06:34:23,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 06:34:23,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 06:34:23,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 06:34:23,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 06:34:23,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 06:34:23,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 06:34:23,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 06:34:23,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 06:34:23,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 06:34:23,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 06:34:23,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 06:34:23,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 06:34:23,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 06:34:23,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 06:34:23,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 06:34:23,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 06:34:23,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 06:34:23,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 06:34:23,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 06:34:23,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 06:34:23,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 06:34:23,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 06:34:23,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 06:34:23,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 06:34:23,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 06:34:23,345 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 06:34:23,369 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 06:34:23,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 06:34:23,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 06:34:23,374 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 06:34:23,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 06:34:23,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 06:34:23,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 06:34:23,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 06:34:23,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 06:34:23,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 06:34:23,376 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 06:34:23,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 06:34:23,376 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 06:34:23,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 06:34:23,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 06:34:23,377 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 06:34:23,377 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 06:34:23,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 06:34:23,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:34:23,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 06:34:23,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 06:34:23,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 06:34:23,378 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 06:34:23,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 06:34:23,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 06:34:23,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 06:34:23,883 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 06:34:23,883 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 06:34:23,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp5f.c [2020-11-07 06:34:23,955 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eee9386f/9451964209f445799539f293a68d8cda/FLAGc0e6b6f28 [2020-11-07 06:34:24,613 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 06:34:24,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp5f.c [2020-11-07 06:34:24,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eee9386f/9451964209f445799539f293a68d8cda/FLAGc0e6b6f28 [2020-11-07 06:34:24,986 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eee9386f/9451964209f445799539f293a68d8cda [2020-11-07 06:34:24,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 06:34:24,996 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 06:34:24,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 06:34:24,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 06:34:25,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 06:34:25,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:34:24" (1/1) ... [2020-11-07 06:34:25,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1014b712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:25, skipping insertion in model container [2020-11-07 06:34:25,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:34:24" (1/1) ... [2020-11-07 06:34:25,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 06:34:25,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 06:34:25,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:34:25,204 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 06:34:25,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:34:25,246 INFO L208 MainTranslator]: Completed translation [2020-11-07 06:34:25,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:25 WrapperNode [2020-11-07 06:34:25,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 06:34:25,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 06:34:25,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 06:34:25,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 06:34:25,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:25" (1/1) ... [2020-11-07 06:34:25,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:25" (1/1) ... [2020-11-07 06:34:25,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:25" (1/1) ... [2020-11-07 06:34:25,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:25" (1/1) ... [2020-11-07 06:34:25,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:25" (1/1) ... [2020-11-07 06:34:25,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:25" (1/1) ... [2020-11-07 06:34:25,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:25" (1/1) ... [2020-11-07 06:34:25,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 06:34:25,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 06:34:25,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 06:34:25,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 06:34:25,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:25" (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 [2020-11-07 06:34:25,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 06:34:25,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 06:34:25,374 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 06:34:25,374 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 06:34:25,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 06:34:25,374 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 06:34:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 06:34:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 06:34:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 06:34:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 06:34:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 06:34:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 06:34:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 06:34:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 06:34:25,376 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 06:34:25,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 06:34:25,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 06:34:25,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 06:34:25,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 06:34:25,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 06:34:25,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 06:34:25,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 06:34:25,895 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 06:34:25,896 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-07 06:34:25,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:34:25 BoogieIcfgContainer [2020-11-07 06:34:25,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 06:34:25,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 06:34:25,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 06:34:25,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 06:34:25,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:34:24" (1/3) ... [2020-11-07 06:34:25,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424fcf91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:34:25, skipping insertion in model container [2020-11-07 06:34:25,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:25" (2/3) ... [2020-11-07 06:34:25,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424fcf91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:34:25, skipping insertion in model container [2020-11-07 06:34:25,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:34:25" (3/3) ... [2020-11-07 06:34:25,908 INFO L111 eAbstractionObserver]: Analyzing ICFG indp5f.c [2020-11-07 06:34:25,955 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 06:34:25,958 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 06:34:25,971 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 06:34:25,995 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 06:34:25,995 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 06:34:25,995 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 06:34:25,995 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 06:34:25,996 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 06:34:25,996 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 06:34:25,996 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 06:34:25,996 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 06:34:26,012 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-11-07 06:34:26,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-07 06:34:26,023 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:34:26,025 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] [2020-11-07 06:34:26,025 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:34:26,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:34:26,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1793350028, now seen corresponding path program 1 times [2020-11-07 06:34:26,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:34:26,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868824886] [2020-11-07 06:34:26,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:34:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:34:26,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:34:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:34:26,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 06:34:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:34:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:34:26,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868824886] [2020-11-07 06:34:26,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:34:26,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 06:34:26,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157572971] [2020-11-07 06:34:26,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 06:34:26,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:34:26,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 06:34:26,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 06:34:26,467 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 3 states. [2020-11-07 06:34:26,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:34:26,837 INFO L93 Difference]: Finished difference Result 153 states and 177 transitions. [2020-11-07 06:34:26,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 06:34:26,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-11-07 06:34:26,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:34:26,847 INFO L225 Difference]: With dead ends: 153 [2020-11-07 06:34:26,848 INFO L226 Difference]: Without dead ends: 74 [2020-11-07 06:34:26,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 06:34:26,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-07 06:34:26,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-07 06:34:26,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-07 06:34:26,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-11-07 06:34:26,903 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 43 [2020-11-07 06:34:26,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:34:26,904 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-11-07 06:34:26,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 06:34:26,904 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-11-07 06:34:26,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-07 06:34:26,906 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:34:26,906 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] [2020-11-07 06:34:26,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 06:34:26,907 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:34:26,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:34:26,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1547866676, now seen corresponding path program 1 times [2020-11-07 06:34:26,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:34:26,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971354477] [2020-11-07 06:34:26,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:34:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:34:27,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:34:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:34:27,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 06:34:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:34:27,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:34:27,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971354477] [2020-11-07 06:34:27,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:34:27,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 06:34:27,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062690680] [2020-11-07 06:34:27,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 06:34:27,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:34:27,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 06:34:27,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 06:34:27,112 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 5 states. [2020-11-07 06:34:27,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:34:27,392 INFO L93 Difference]: Finished difference Result 145 states and 157 transitions. [2020-11-07 06:34:27,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 06:34:27,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-11-07 06:34:27,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:34:27,395 INFO L225 Difference]: With dead ends: 145 [2020-11-07 06:34:27,395 INFO L226 Difference]: Without dead ends: 104 [2020-11-07 06:34:27,396 INFO L677 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 [2020-11-07 06:34:27,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-07 06:34:27,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 79. [2020-11-07 06:34:27,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-11-07 06:34:27,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-11-07 06:34:27,414 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 43 [2020-11-07 06:34:27,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:34:27,415 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-11-07 06:34:27,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 06:34:27,415 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-11-07 06:34:27,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-07 06:34:27,420 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:34:27,420 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, 1, 1, 1, 1, 1, 1] [2020-11-07 06:34:27,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 06:34:27,421 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:34:27,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:34:27,422 INFO L82 PathProgramCache]: Analyzing trace with hash 420162924, now seen corresponding path program 1 times [2020-11-07 06:34:27,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:34:27,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752606759] [2020-11-07 06:34:27,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:34:27,445 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-07 06:34:27,446 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-11-07 06:34:27,446 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 06:34:27,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 06:34:27,470 WARN L253 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-07 06:34:27,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:34:27 BoogieIcfgContainer [2020-11-07 06:34:27,471 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 06:34:27,476 INFO L168 Benchmark]: Toolchain (without parser) took 2483.65 ms. Allocated memory was 154.1 MB in the beginning and 200.3 MB in the end (delta: 46.1 MB). Free memory was 131.1 MB in the beginning and 143.1 MB in the end (delta: -12.1 MB). Peak memory consumption was 35.1 MB. Max. memory is 8.0 GB. [2020-11-07 06:34:27,483 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 154.1 MB. Free memory was 129.2 MB in the beginning and 128.9 MB in the end (delta: 264.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 06:34:27,485 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.10 ms. Allocated memory is still 154.1 MB. Free memory was 130.4 MB in the beginning and 119.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 06:34:27,486 INFO L168 Benchmark]: Boogie Preprocessor took 43.86 ms. Allocated memory is still 154.1 MB. Free memory was 119.9 MB in the beginning and 118.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 06:34:27,487 INFO L168 Benchmark]: RCFGBuilder took 605.38 ms. Allocated memory is still 154.1 MB. Free memory was 118.0 MB in the beginning and 96.5 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-07 06:34:27,488 INFO L168 Benchmark]: TraceAbstraction took 1570.87 ms. Allocated memory was 154.1 MB in the beginning and 200.3 MB in the end (delta: 46.1 MB). Free memory was 96.0 MB in the beginning and 143.1 MB in the end (delta: -47.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 06:34:27,492 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 154.1 MB. Free memory was 129.2 MB in the beginning and 128.9 MB in the end (delta: 264.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 250.10 ms. Allocated memory is still 154.1 MB. Free memory was 130.4 MB in the beginning and 119.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.86 ms. Allocated memory is still 154.1 MB. Free memory was 119.9 MB in the beginning and 118.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 605.38 ms. Allocated memory is still 154.1 MB. Free memory was 118.0 MB in the beginning and 96.5 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1570.87 ms. Allocated memory was 154.1 MB in the beginning and 200.3 MB in the end (delta: 46.1 MB). Free memory was 96.0 MB in the beginning and 143.1 MB in the end (delta: -47.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: 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: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long sum[1]; [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i