/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/sina1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 06:34:47,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 06:34:47,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 06:34:47,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 06:34:47,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 06:34:47,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 06:34:47,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 06:34:47,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 06:34:47,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 06:34:47,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 06:34:47,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 06:34:47,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 06:34:47,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 06:34:47,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 06:34:47,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 06:34:47,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 06:34:47,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 06:34:47,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 06:34:47,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 06:34:47,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 06:34:47,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 06:34:47,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 06:34:47,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 06:34:47,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 06:34:47,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 06:34:47,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 06:34:47,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 06:34:47,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 06:34:47,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 06:34:47,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 06:34:47,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 06:34:47,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 06:34:47,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 06:34:47,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 06:34:47,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 06:34:47,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 06:34:47,623 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 06:34:47,636 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 06:34:47,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 06:34:47,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 06:34:47,639 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 06:34:47,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 06:34:47,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 06:34:47,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 06:34:47,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 06:34:47,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 06:34:47,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 06:34:47,640 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 06:34:47,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 06:34:47,640 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 06:34:47,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 06:34:47,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 06:34:47,641 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 06:34:47,641 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 06:34:47,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 06:34:47,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:34:47,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 06:34:47,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 06:34:47,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 06:34:47,643 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 06:34:48,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 06:34:48,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 06:34:48,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 06:34:48,111 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 06:34:48,112 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 06:34:48,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina1f.c [2020-11-07 06:34:48,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bddb578c0/cffc2a182ada46dca92b94410bb8e0f8/FLAG9d612a1c9 [2020-11-07 06:34:48,838 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 06:34:48,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina1f.c [2020-11-07 06:34:48,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bddb578c0/cffc2a182ada46dca92b94410bb8e0f8/FLAG9d612a1c9 [2020-11-07 06:34:49,208 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bddb578c0/cffc2a182ada46dca92b94410bb8e0f8 [2020-11-07 06:34:49,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 06:34:49,218 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 06:34:49,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 06:34:49,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 06:34:49,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 06:34:49,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:34:49" (1/1) ... [2020-11-07 06:34:49,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@823e5af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:49, skipping insertion in model container [2020-11-07 06:34:49,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:34:49" (1/1) ... [2020-11-07 06:34:49,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 06:34:49,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 06:34:49,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:34:49,451 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 06:34:49,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:34:49,492 INFO L208 MainTranslator]: Completed translation [2020-11-07 06:34:49,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:49 WrapperNode [2020-11-07 06:34:49,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 06:34:49,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 06:34:49,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 06:34:49,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 06:34:49,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:49" (1/1) ... [2020-11-07 06:34:49,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:49" (1/1) ... [2020-11-07 06:34:49,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:49" (1/1) ... [2020-11-07 06:34:49,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:49" (1/1) ... [2020-11-07 06:34:49,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:49" (1/1) ... [2020-11-07 06:34:49,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:49" (1/1) ... [2020-11-07 06:34:49,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:49" (1/1) ... [2020-11-07 06:34:49,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 06:34:49,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 06:34:49,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 06:34:49,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 06:34:49,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:49" (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 06:34:49,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 06:34:49,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 06:34:49,657 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 06:34:49,657 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 06:34:49,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 06:34:49,657 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 06:34:49,658 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 06:34:49,658 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 06:34:49,658 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 06:34:49,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 06:34:49,659 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 06:34:49,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 06:34:49,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 06:34:49,659 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 06:34:49,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 06:34:49,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 06:34:49,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 06:34:49,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 06:34:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 06:34:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 06:34:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 06:34:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 06:34:50,180 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 06:34:50,180 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-07 06:34:50,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:34:50 BoogieIcfgContainer [2020-11-07 06:34:50,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 06:34:50,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 06:34:50,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 06:34:50,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 06:34:50,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:34:49" (1/3) ... [2020-11-07 06:34:50,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43060b21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:34:50, skipping insertion in model container [2020-11-07 06:34:50,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:49" (2/3) ... [2020-11-07 06:34:50,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43060b21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:34:50, skipping insertion in model container [2020-11-07 06:34:50,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:34:50" (3/3) ... [2020-11-07 06:34:50,192 INFO L111 eAbstractionObserver]: Analyzing ICFG sina1f.c [2020-11-07 06:34:50,211 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 06:34:50,215 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 06:34:50,230 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 06:34:50,260 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 06:34:50,260 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 06:34:50,260 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 06:34:50,260 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 06:34:50,260 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 06:34:50,260 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 06:34:50,261 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 06:34:50,261 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 06:34:50,292 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-11-07 06:34:50,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 06:34:50,306 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:34:50,307 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] [2020-11-07 06:34:50,308 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:34:50,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:34:50,322 INFO L82 PathProgramCache]: Analyzing trace with hash -2078648093, now seen corresponding path program 1 times [2020-11-07 06:34:50,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:34:50,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890405127] [2020-11-07 06:34:50,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:34:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:34:50,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:34:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:34:50,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 06:34:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:34:50,763 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 06:34:50,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890405127] [2020-11-07 06:34:50,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:34:50,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 06:34:50,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400933496] [2020-11-07 06:34:50,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 06:34:50,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:34:50,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 06:34:50,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 06:34:50,796 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 5 states. [2020-11-07 06:34:51,001 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-11-07 06:34:51,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:34:51,383 INFO L93 Difference]: Finished difference Result 137 states and 160 transitions. [2020-11-07 06:34:51,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 06:34:51,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-11-07 06:34:51,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:34:51,408 INFO L225 Difference]: With dead ends: 137 [2020-11-07 06:34:51,408 INFO L226 Difference]: Without dead ends: 76 [2020-11-07 06:34:51,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-07 06:34:51,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-07 06:34:51,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 60. [2020-11-07 06:34:51,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-07 06:34:51,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2020-11-07 06:34:51,520 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 39 [2020-11-07 06:34:51,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:34:51,521 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2020-11-07 06:34:51,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 06:34:51,522 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2020-11-07 06:34:51,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-07 06:34:51,526 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:34:51,527 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] [2020-11-07 06:34:51,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 06:34:51,528 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:34:51,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:34:51,533 INFO L82 PathProgramCache]: Analyzing trace with hash -183430070, now seen corresponding path program 1 times [2020-11-07 06:34:51,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:34:51,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378558876] [2020-11-07 06:34:51,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:34:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 06:34:51,633 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 06:34:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 06:34:51,701 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 06:34:51,741 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 06:34:51,742 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 06:34:51,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 06:34:51,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:34:51 BoogieIcfgContainer [2020-11-07 06:34:51,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 06:34:51,804 INFO L168 Benchmark]: Toolchain (without parser) took 2590.40 ms. Allocated memory is still 151.0 MB. Free memory was 110.1 MB in the beginning and 96.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. [2020-11-07 06:34:51,805 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 06:34:51,806 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.81 ms. Allocated memory is still 151.0 MB. Free memory was 136.1 MB in the beginning and 125.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 06:34:51,807 INFO L168 Benchmark]: Boogie Preprocessor took 41.52 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 124.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 06:34:51,808 INFO L168 Benchmark]: RCFGBuilder took 643.62 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 117.4 MB in the end (delta: 6.9 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. [2020-11-07 06:34:51,809 INFO L168 Benchmark]: TraceAbstraction took 1617.44 ms. Allocated memory is still 151.0 MB. Free memory was 116.9 MB in the beginning and 96.7 MB in the end (delta: 20.3 MB). Peak memory consumption was 19.5 MB. Max. memory is 8.0 GB. [2020-11-07 06:34:51,814 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 253.81 ms. Allocated memory is still 151.0 MB. Free memory was 136.1 MB in the beginning and 125.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.52 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 124.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 643.62 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 117.4 MB in the end (delta: 6.9 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1617.44 ms. Allocated memory is still 151.0 MB. Free memory was 116.9 MB in the beginning and 96.7 MB in the end (delta: 20.3 MB). Peak memory consumption was 19.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() VAL [\old(N)=0, __VERIFIER_nondet_int()=1, N=1] [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; VAL [\old(N)=0, N=1] [L28] int sum[1]; VAL [\old(N)=0, N=1, sum={3:0}] [L29] int *a = malloc(sizeof(int)*N); VAL [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L31] sum[0] = 1 VAL [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L32] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L32] COND TRUE i