/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/indp2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:56:18,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:56:18,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:56:18,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 01:56:18,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:56:18,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:56:18,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:56:18,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:56:18,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:56:18,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:56:18,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:56:18,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:56:18,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:56:18,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:56:18,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:56:18,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:56:18,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 01:56:18,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 01:56:18,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 01:56:18,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 01:56:18,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 01:56:18,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 01:56:18,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 01:56:18,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 01:56:18,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 01:56:18,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:56:18,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:56:18,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:56:18,545 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 01:56:18,570 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:56:18,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:56:18,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:56:18,574 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:56:18,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:56:18,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:56:18,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:56:18,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:56:18,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:56:18,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:56:18,575 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:56:18,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:56:18,576 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:56:18,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:56:18,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:56:18,577 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:56:18,578 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:56:18,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:56:18,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:56:18,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:56:18,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:56:18,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:56:18,579 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:56:19,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:56:19,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:56:19,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:56:19,062 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:56:19,063 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:56:19,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp2f.c [2020-11-07 01:56:19,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6315b55c7/22c9336a358b463a9a2b8efe392d21a4/FLAGb27919110 [2020-11-07 01:56:19,912 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:56:19,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp2f.c [2020-11-07 01:56:19,920 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6315b55c7/22c9336a358b463a9a2b8efe392d21a4/FLAGb27919110 [2020-11-07 01:56:20,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6315b55c7/22c9336a358b463a9a2b8efe392d21a4 [2020-11-07 01:56:20,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:56:20,261 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:56:20,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:20,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:56:20,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:56:20,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:20" (1/1) ... [2020-11-07 01:56:20,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58af187a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:20, skipping insertion in model container [2020-11-07 01:56:20,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:20" (1/1) ... [2020-11-07 01:56:20,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:56:20,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:56:20,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:20,505 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:56:20,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:20,545 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:56:20,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:20 WrapperNode [2020-11-07 01:56:20,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:20,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:56:20,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:56:20,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:56:20,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:20" (1/1) ... [2020-11-07 01:56:20,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:20" (1/1) ... [2020-11-07 01:56:20,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:20" (1/1) ... [2020-11-07 01:56:20,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:20" (1/1) ... [2020-11-07 01:56:20,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:20" (1/1) ... [2020-11-07 01:56:20,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:20" (1/1) ... [2020-11-07 01:56:20,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:20" (1/1) ... [2020-11-07 01:56:20,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:56:20,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:56:20,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:56:20,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:56:20,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:20" (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 01:56:20,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:56:20,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:56:20,678 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:56:20,679 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 01:56:20,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 01:56:20,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:56:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:56:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:56:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:56:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:56:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 01:56:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 01:56:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:56:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 01:56:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:56:20,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 01:56:20,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:56:20,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:56:20,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:56:20,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:56:20,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:56:20,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:56:21,018 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:56:21,035 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-07 01:56:21,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:21 BoogieIcfgContainer [2020-11-07 01:56:21,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:56:21,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:56:21,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:56:21,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:56:21,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:56:20" (1/3) ... [2020-11-07 01:56:21,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ea7aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:21, skipping insertion in model container [2020-11-07 01:56:21,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:20" (2/3) ... [2020-11-07 01:56:21,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ea7aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:21, skipping insertion in model container [2020-11-07 01:56:21,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:21" (3/3) ... [2020-11-07 01:56:21,055 INFO L111 eAbstractionObserver]: Analyzing ICFG indp2f.c [2020-11-07 01:56:21,076 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:56:21,080 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:56:21,096 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:56:21,125 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:56:21,126 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:56:21,126 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:56:21,126 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:56:21,126 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:56:21,126 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:56:21,127 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:56:21,127 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:56:21,148 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-11-07 01:56:21,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 01:56:21,161 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:21,162 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 01:56:21,163 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:21,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:21,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1087441824, now seen corresponding path program 1 times [2020-11-07 01:56:21,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:21,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245391334] [2020-11-07 01:56:21,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:21,339 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:21,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:21,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:21,787 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 01:56:21,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245391334] [2020-11-07 01:56:21,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:21,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:56:21,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537332014] [2020-11-07 01:56:21,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:56:21,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:21,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:56:21,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:56:21,821 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 3 states. [2020-11-07 01:56:22,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:22,006 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2020-11-07 01:56:22,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:56:22,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-11-07 01:56:22,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:22,017 INFO L225 Difference]: With dead ends: 119 [2020-11-07 01:56:22,017 INFO L226 Difference]: Without dead ends: 62 [2020-11-07 01:56:22,021 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 [2020-11-07 01:56:22,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-07 01:56:22,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-11-07 01:56:22,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-07 01:56:22,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2020-11-07 01:56:22,079 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 39 [2020-11-07 01:56:22,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:22,080 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2020-11-07 01:56:22,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:56:22,081 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2020-11-07 01:56:22,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 01:56:22,082 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:22,083 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 01:56:22,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:56:22,083 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:22,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:22,085 INFO L82 PathProgramCache]: Analyzing trace with hash 2019697356, now seen corresponding path program 1 times [2020-11-07 01:56:22,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:22,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417178360] [2020-11-07 01:56:22,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:22,088 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:22,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:22,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:22,265 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 01:56:22,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417178360] [2020-11-07 01:56:22,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:22,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 01:56:22,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050687539] [2020-11-07 01:56:22,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 01:56:22,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:22,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 01:56:22,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 01:56:22,273 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 5 states. [2020-11-07 01:56:22,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:22,652 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2020-11-07 01:56:22,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 01:56:22,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-11-07 01:56:22,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:22,657 INFO L225 Difference]: With dead ends: 115 [2020-11-07 01:56:22,657 INFO L226 Difference]: Without dead ends: 84 [2020-11-07 01:56:22,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-07 01:56:22,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-07 01:56:22,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 65. [2020-11-07 01:56:22,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-07 01:56:22,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2020-11-07 01:56:22,679 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 39 [2020-11-07 01:56:22,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:22,680 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2020-11-07 01:56:22,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 01:56:22,680 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2020-11-07 01:56:22,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-07 01:56:22,682 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:22,682 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] [2020-11-07 01:56:22,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:56:22,683 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:22,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:22,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1397964890, now seen corresponding path program 1 times [2020-11-07 01:56:22,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:22,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821145253] [2020-11-07 01:56:22,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:22,765 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 01:56:22,774 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:22,803 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-11-07 01:56:22,803 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 01:56:22,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 01:56:22,827 WARN L253 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-07 01:56:22,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:56:22 BoogieIcfgContainer [2020-11-07 01:56:22,828 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:56:22,831 INFO L168 Benchmark]: Toolchain (without parser) took 2573.13 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 129.3 MB in the beginning and 153.6 MB in the end (delta: -24.3 MB). Peak memory consumption was 7.2 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:22,832 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 152.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:56:22,833 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.17 ms. Allocated memory is still 152.0 MB. Free memory was 128.4 MB in the beginning and 118.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:22,834 INFO L168 Benchmark]: Boogie Preprocessor took 43.68 ms. Allocated memory is still 152.0 MB. Free memory was 118.8 MB in the beginning and 117.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:22,835 INFO L168 Benchmark]: RCFGBuilder took 453.26 ms. Allocated memory is still 152.0 MB. Free memory was 117.1 MB in the beginning and 135.5 MB in the end (delta: -18.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:22,836 INFO L168 Benchmark]: TraceAbstraction took 1780.85 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 135.3 MB in the beginning and 153.6 MB in the end (delta: -18.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:22,841 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 152.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 283.17 ms. Allocated memory is still 152.0 MB. Free memory was 128.4 MB in the beginning and 118.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.68 ms. Allocated memory is still 152.0 MB. Free memory was 118.8 MB in the beginning and 117.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 453.26 ms. Allocated memory is still 152.0 MB. Free memory was 117.1 MB in the beginning and 135.5 MB in the end (delta: -18.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1780.85 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 135.3 MB in the beginning and 153.6 MB in the end (delta: -18.3 MB). Peak memory consumption was 12.6 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); [L30] i=0 [L30] COND TRUE i