/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-b8ad66e [2020-10-24 02:23:34,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 02:23:34,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 02:23:34,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 02:23:34,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 02:23:34,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 02:23:34,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 02:23:34,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 02:23:34,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 02:23:34,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 02:23:34,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 02:23:34,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 02:23:34,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 02:23:34,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 02:23:34,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 02:23:34,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 02:23:34,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 02:23:34,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 02:23:34,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 02:23:34,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 02:23:34,350 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 02:23:34,363 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 02:23:34,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 02:23:34,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 02:23:34,365 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 02:23:34,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 02:23:34,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 02:23:34,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 02:23:34,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 02:23:34,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 02:23:34,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 02:23:34,367 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 02:23:34,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 02:23:34,367 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 02:23:34,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 02:23:34,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 02:23:34,368 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 02:23:34,368 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 02:23:34,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 02:23:34,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:23:34,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 02:23:34,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 02:23:34,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 02:23:34,370 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 02:23:34,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 02:23:34,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 02:23:34,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 02:23:34,850 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 02:23:34,851 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 02:23:34,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp5f.c [2020-10-24 02:23:34,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/368675a03/c567b0cd89824281bed547bd69f6d71a/FLAG34199f2f0 [2020-10-24 02:23:35,520 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 02:23:35,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp5f.c [2020-10-24 02:23:35,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/368675a03/c567b0cd89824281bed547bd69f6d71a/FLAG34199f2f0 [2020-10-24 02:23:35,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/368675a03/c567b0cd89824281bed547bd69f6d71a [2020-10-24 02:23:35,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 02:23:35,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 02:23:35,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 02:23:35,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 02:23:35,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 02:23:35,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:23:35" (1/1) ... [2020-10-24 02:23:35,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13a840b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:35, skipping insertion in model container [2020-10-24 02:23:35,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:23:35" (1/1) ... [2020-10-24 02:23:35,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 02:23:35,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 02:23:36,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:23:36,178 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 02:23:36,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:23:36,220 INFO L208 MainTranslator]: Completed translation [2020-10-24 02:23:36,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:36 WrapperNode [2020-10-24 02:23:36,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 02:23:36,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 02:23:36,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 02:23:36,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 02:23:36,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:36" (1/1) ... [2020-10-24 02:23:36,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:36" (1/1) ... [2020-10-24 02:23:36,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:36" (1/1) ... [2020-10-24 02:23:36,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:36" (1/1) ... [2020-10-24 02:23:36,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:36" (1/1) ... [2020-10-24 02:23:36,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:36" (1/1) ... [2020-10-24 02:23:36,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:36" (1/1) ... [2020-10-24 02:23:36,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 02:23:36,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 02:23:36,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 02:23:36,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 02:23:36,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:36" (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 [2020-10-24 02:23:36,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 02:23:36,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 02:23:36,349 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 02:23:36,349 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-24 02:23:36,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-24 02:23:36,349 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 02:23:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 02:23:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 02:23:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 02:23:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 02:23:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-24 02:23:36,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-24 02:23:36,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 02:23:36,351 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-24 02:23:36,351 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 02:23:36,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-24 02:23:36,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 02:23:36,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 02:23:36,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 02:23:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 02:23:36,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 02:23:36,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 02:23:36,912 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 02:23:36,913 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-24 02:23:36,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:23:36 BoogieIcfgContainer [2020-10-24 02:23:36,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 02:23:36,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 02:23:36,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 02:23:36,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 02:23:36,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:23:35" (1/3) ... [2020-10-24 02:23:36,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b18b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:23:36, skipping insertion in model container [2020-10-24 02:23:36,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:36" (2/3) ... [2020-10-24 02:23:36,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b18b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:23:36, skipping insertion in model container [2020-10-24 02:23:36,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:23:36" (3/3) ... [2020-10-24 02:23:36,923 INFO L111 eAbstractionObserver]: Analyzing ICFG indp5f.c [2020-10-24 02:23:36,935 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 02:23:36,939 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 02:23:36,952 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 02:23:36,972 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 02:23:36,972 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 02:23:36,973 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 02:23:36,973 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 02:23:36,973 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 02:23:36,973 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 02:23:36,973 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 02:23:36,973 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 02:23:36,990 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-10-24 02:23:37,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-24 02:23:37,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:23:37,001 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] [2020-10-24 02:23:37,002 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:23:37,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:23:37,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1793350028, now seen corresponding path program 1 times [2020-10-24 02:23:37,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:23:37,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628599199] [2020-10-24 02:23:37,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:23:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:37,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:23:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:37,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-24 02:23:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:23:37,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628599199] [2020-10-24 02:23:37,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:23:37,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-24 02:23:37,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456376418] [2020-10-24 02:23:37,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 02:23:37,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:23:37,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 02:23:37,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 02:23:37,365 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 3 states. [2020-10-24 02:23:37,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:23:37,587 INFO L93 Difference]: Finished difference Result 153 states and 177 transitions. [2020-10-24 02:23:37,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 02:23:37,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-10-24 02:23:37,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:23:37,598 INFO L225 Difference]: With dead ends: 153 [2020-10-24 02:23:37,599 INFO L226 Difference]: Without dead ends: 74 [2020-10-24 02:23:37,603 INFO L677 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 [2020-10-24 02:23:37,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-24 02:23:37,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-24 02:23:37,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-24 02:23:37,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-10-24 02:23:37,656 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 43 [2020-10-24 02:23:37,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:23:37,657 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-10-24 02:23:37,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 02:23:37,657 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-10-24 02:23:37,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-24 02:23:37,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:23:37,659 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] [2020-10-24 02:23:37,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 02:23:37,660 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:23:37,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:23:37,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1547866676, now seen corresponding path program 1 times [2020-10-24 02:23:37,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:23:37,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637925686] [2020-10-24 02:23:37,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:23:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:37,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:23:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:37,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-24 02:23:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:37,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:23:37,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637925686] [2020-10-24 02:23:37,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:23:37,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-24 02:23:37,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617101244] [2020-10-24 02:23:37,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 02:23:37,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:23:37,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 02:23:37,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 02:23:37,889 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 5 states. [2020-10-24 02:23:38,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:23:38,187 INFO L93 Difference]: Finished difference Result 145 states and 157 transitions. [2020-10-24 02:23:38,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 02:23:38,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-10-24 02:23:38,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:23:38,189 INFO L225 Difference]: With dead ends: 145 [2020-10-24 02:23:38,190 INFO L226 Difference]: Without dead ends: 104 [2020-10-24 02:23:38,191 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 [2020-10-24 02:23:38,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-24 02:23:38,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 79. [2020-10-24 02:23:38,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-24 02:23:38,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-24 02:23:38,210 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 43 [2020-10-24 02:23:38,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:23:38,210 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-24 02:23:38,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 02:23:38,210 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-24 02:23:38,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-24 02:23:38,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:23:38,213 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] [2020-10-24 02:23:38,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 02:23:38,214 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:23:38,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:23:38,214 INFO L82 PathProgramCache]: Analyzing trace with hash 420162924, now seen corresponding path program 1 times [2020-10-24 02:23:38,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:23:38,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142738345] [2020-10-24 02:23:38,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:23:38,235 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-24 02:23:38,235 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-24 02:23:38,235 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 02:23:38,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 02:23:38,263 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-24 02:23:38,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:23:38 BoogieIcfgContainer [2020-10-24 02:23:38,265 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 02:23:38,271 INFO L168 Benchmark]: Toolchain (without parser) took 2402.66 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 133.0 MB in the beginning and 135.3 MB in the end (delta: -2.2 MB). Peak memory consumption was 30.0 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:38,274 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory was 129.8 MB in the beginning and 129.6 MB in the end (delta: 145.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 02:23:38,275 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.44 ms. Allocated memory is still 156.2 MB. Free memory was 132.4 MB in the beginning and 122.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:38,276 INFO L168 Benchmark]: Boogie Preprocessor took 45.45 ms. Allocated memory is still 156.2 MB. Free memory was 122.3 MB in the beginning and 120.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:38,278 INFO L168 Benchmark]: RCFGBuilder took 646.18 ms. Allocated memory is still 156.2 MB. Free memory was 120.5 MB in the beginning and 134.8 MB in the end (delta: -14.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:38,279 INFO L168 Benchmark]: TraceAbstraction took 1348.78 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 134.3 MB in the beginning and 135.3 MB in the end (delta: -1.0 MB). Peak memory consumption was 30.5 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:38,287 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory was 129.8 MB in the beginning and 129.6 MB in the end (delta: 145.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 347.44 ms. Allocated memory is still 156.2 MB. Free memory was 132.4 MB in the beginning and 122.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.45 ms. Allocated memory is still 156.2 MB. Free memory was 122.3 MB in the beginning and 120.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 646.18 ms. Allocated memory is still 156.2 MB. Free memory was 120.5 MB in the beginning and 134.8 MB in the end (delta: -14.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1348.78 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 134.3 MB in the beginning and 135.3 MB in the end (delta: -1.0 MB). Peak memory consumption was 30.5 MB. 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