/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/res1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:56:31,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:56:31,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:56:31,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 01:56:31,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 01:56:31,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 01:56:31,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 01:56:31,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 01:56:31,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 01:56:31,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 01:56:31,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 01:56:31,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 01:56:31,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:56:31,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:56:31,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:56:31,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:56:31,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:56:31,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:56:31,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:56:31,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:56:31,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:56:31,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:56:31,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:56:31,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:56:31,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 01:56:31,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:56:31,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:56:31,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:56:31,853 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 01:56:31,865 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:56:31,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:56:31,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:56:31,868 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:56:31,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:56:31,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:56:31,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:56:31,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:56:31,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:56:31,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:56:31,869 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:56:31,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:56:31,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:56:31,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:56:31,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:56:31,870 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:56:31,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:56:31,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:56:31,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:56:31,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:56:31,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:56:31,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:56:31,872 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:56:32,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:56:32,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:56:32,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:56:32,315 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:56:32,316 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:56:32,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1f.c [2020-11-07 01:56:32,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44c32c115/d23818799e1c4b3c85609f0e5f370af6/FLAG441fb578b [2020-11-07 01:56:33,086 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:56:33,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res1f.c [2020-11-07 01:56:33,095 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44c32c115/d23818799e1c4b3c85609f0e5f370af6/FLAG441fb578b [2020-11-07 01:56:33,457 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44c32c115/d23818799e1c4b3c85609f0e5f370af6 [2020-11-07 01:56:33,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:56:33,479 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:56:33,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:33,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:56:33,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:56:33,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:33" (1/1) ... [2020-11-07 01:56:33,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ee1b8cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:33, skipping insertion in model container [2020-11-07 01:56:33,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:33" (1/1) ... [2020-11-07 01:56:33,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:56:33,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:56:33,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:33,688 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:56:33,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:33,729 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:56:33,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:33 WrapperNode [2020-11-07 01:56:33,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:33,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:56:33,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:56:33,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:56:33,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:33" (1/1) ... [2020-11-07 01:56:33,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:33" (1/1) ... [2020-11-07 01:56:33,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:33" (1/1) ... [2020-11-07 01:56:33,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:33" (1/1) ... [2020-11-07 01:56:33,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:33" (1/1) ... [2020-11-07 01:56:33,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:33" (1/1) ... [2020-11-07 01:56:33,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:33" (1/1) ... [2020-11-07 01:56:33,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:56:33,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:56:33,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:56:33,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:56:33,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:33" (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 01:56:33,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:56:33,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:56:33,898 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:56:33,898 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 01:56:33,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 01:56:33,898 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:56:33,898 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:56:33,899 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:56:33,899 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:56:33,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:56:33,899 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 01:56:33,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 01:56:33,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:56:33,899 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 01:56:33,900 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:56:33,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 01:56:33,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:56:33,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:56:33,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:56:33,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:56:33,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:56:33,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:56:34,320 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:56:34,320 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-07 01:56:34,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:34 BoogieIcfgContainer [2020-11-07 01:56:34,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:56:34,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:56:34,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:56:34,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:56:34,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:56:33" (1/3) ... [2020-11-07 01:56:34,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df59654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:34, skipping insertion in model container [2020-11-07 01:56:34,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:33" (2/3) ... [2020-11-07 01:56:34,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df59654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:34, skipping insertion in model container [2020-11-07 01:56:34,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:34" (3/3) ... [2020-11-07 01:56:34,332 INFO L111 eAbstractionObserver]: Analyzing ICFG res1f.c [2020-11-07 01:56:34,348 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:56:34,352 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:56:34,366 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:56:34,392 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:56:34,392 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:56:34,392 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:56:34,392 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:56:34,392 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:56:34,393 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:56:34,393 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:56:34,393 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:56:34,411 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2020-11-07 01:56:34,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-07 01:56:34,422 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:34,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:56:34,423 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:34,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:34,430 INFO L82 PathProgramCache]: Analyzing trace with hash 609850443, now seen corresponding path program 1 times [2020-11-07 01:56:34,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:34,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400946186] [2020-11-07 01:56:34,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:34,533 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:34,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:34,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:34,890 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 01:56:34,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400946186] [2020-11-07 01:56:34,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:34,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:56:34,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459343227] [2020-11-07 01:56:34,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:56:34,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:34,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:56:34,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:56:34,926 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 3 states. [2020-11-07 01:56:35,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:35,189 INFO L93 Difference]: Finished difference Result 141 states and 161 transitions. [2020-11-07 01:56:35,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:56:35,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-11-07 01:56:35,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:35,201 INFO L225 Difference]: With dead ends: 141 [2020-11-07 01:56:35,201 INFO L226 Difference]: Without dead ends: 68 [2020-11-07 01:56:35,205 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 01:56:35,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-07 01:56:35,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-11-07 01:56:35,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-07 01:56:35,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2020-11-07 01:56:35,262 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 43 [2020-11-07 01:56:35,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:35,263 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2020-11-07 01:56:35,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:56:35,264 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2020-11-07 01:56:35,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-07 01:56:35,266 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:35,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:56:35,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:56:35,267 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:35,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:35,268 INFO L82 PathProgramCache]: Analyzing trace with hash -315691279, now seen corresponding path program 1 times [2020-11-07 01:56:35,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:35,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150397037] [2020-11-07 01:56:35,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:35,272 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:35,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:35,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:35,489 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 01:56:35,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150397037] [2020-11-07 01:56:35,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:35,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 01:56:35,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032087404] [2020-11-07 01:56:35,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 01:56:35,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:35,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 01:56:35,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 01:56:35,498 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand 5 states. [2020-11-07 01:56:35,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:35,802 INFO L93 Difference]: Finished difference Result 125 states and 134 transitions. [2020-11-07 01:56:35,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 01:56:35,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-11-07 01:56:35,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:35,805 INFO L225 Difference]: With dead ends: 125 [2020-11-07 01:56:35,805 INFO L226 Difference]: Without dead ends: 92 [2020-11-07 01:56:35,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-07 01:56:35,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-07 01:56:35,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 72. [2020-11-07 01:56:35,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-07 01:56:35,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2020-11-07 01:56:35,824 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 43 [2020-11-07 01:56:35,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:35,825 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2020-11-07 01:56:35,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 01:56:35,825 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2020-11-07 01:56:35,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-07 01:56:35,828 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:35,828 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] [2020-11-07 01:56:35,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:56:35,828 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:35,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:35,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1392575935, now seen corresponding path program 1 times [2020-11-07 01:56:35,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:35,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277781419] [2020-11-07 01:56:35,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:35,885 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 01:56:35,887 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:56:35,955 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:56:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:56:36,043 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:56:36,082 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 01:56:36,082 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 01:56:36,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 01:56:36,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:56:36 BoogieIcfgContainer [2020-11-07 01:56:36,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:56:36,107 INFO L168 Benchmark]: Toolchain (without parser) took 2643.36 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 119.9 MB in the beginning and 96.5 MB in the end (delta: 23.5 MB). Peak memory consumption was 57.9 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:36,108 INFO L168 Benchmark]: CDTParser took 0.99 ms. Allocated memory is still 163.6 MB. Free memory was 136.6 MB in the beginning and 136.5 MB in the end (delta: 130.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:56:36,109 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.82 ms. Allocated memory is still 163.6 MB. Free memory was 147.1 MB in the beginning and 137.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:36,109 INFO L168 Benchmark]: Boogie Preprocessor took 86.04 ms. Allocated memory is still 163.6 MB. Free memory was 137.1 MB in the beginning and 146.1 MB in the end (delta: -8.9 MB). Peak memory consumption was 1.6 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:36,110 INFO L168 Benchmark]: RCFGBuilder took 504.87 ms. Allocated memory is still 163.6 MB. Free memory was 146.1 MB in the beginning and 125.1 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:36,111 INFO L168 Benchmark]: TraceAbstraction took 1779.38 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 124.4 MB in the beginning and 96.5 MB in the end (delta: 28.0 MB). Peak memory consumption was 62.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:36,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.99 ms. Allocated memory is still 163.6 MB. Free memory was 136.6 MB in the beginning and 136.5 MB in the end (delta: 130.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 245.82 ms. Allocated memory is still 163.6 MB. Free memory was 147.1 MB in the beginning and 137.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 86.04 ms. Allocated memory is still 163.6 MB. Free memory was 137.1 MB in the beginning and 146.1 MB in the end (delta: -8.9 MB). Peak memory consumption was 1.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 504.87 ms. Allocated memory is still 163.6 MB. Free memory was 146.1 MB in the beginning and 125.1 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1779.38 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 124.4 MB in the beginning and 96.5 MB in the end (delta: 28.0 MB). Peak memory consumption was 62.5 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; [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 sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L30] int *b = malloc(sizeof(int)*N); [L32] sum[0] = 1 [L33] i=0 [L33] COND TRUE i