/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/ss1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:56:56,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:56:56,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:56:56,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 01:56:56,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 01:56:56,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 01:56:56,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 01:56:56,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 01:56:56,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 01:56:56,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 01:56:56,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 01:56:56,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 01:56:56,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:56:56,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:56:56,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:56:56,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:56:56,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:56:56,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:56:56,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:56:56,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:56:56,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:56:56,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:56:56,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:56:56,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:56:56,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 01:56:56,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 01:56:56,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 01:56:56,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 01:56:56,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 01:56:56,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 01:56:56,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 01:56:56,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 01:56:56,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 01:56:56,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:56:56,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:56:56,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:56:56,906 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 01:56:56,919 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:56:56,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:56:56,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:56:56,921 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:56:56,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:56:56,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:56:56,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:56:56,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:56:56,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:56:56,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:56:56,923 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:56:56,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:56:56,923 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:56:56,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:56:56,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:56:56,924 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:56:56,924 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:56:56,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:56:56,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:56:56,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:56:56,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:56:56,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:56:56,926 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:56:57,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:56:57,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:56:57,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:56:57,357 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:56:57,358 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:56:57,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss1f.c [2020-11-07 01:56:57,447 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a39dac4e8/ceef1bce9a76482b8125ea34b9a76ff2/FLAG014d9c5c3 [2020-11-07 01:56:58,106 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:56:58,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss1f.c [2020-11-07 01:56:58,116 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a39dac4e8/ceef1bce9a76482b8125ea34b9a76ff2/FLAG014d9c5c3 [2020-11-07 01:56:58,451 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a39dac4e8/ceef1bce9a76482b8125ea34b9a76ff2 [2020-11-07 01:56:58,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:56:58,461 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:56:58,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:58,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:56:58,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:56:58,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:58" (1/1) ... [2020-11-07 01:56:58,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37af250d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:58, skipping insertion in model container [2020-11-07 01:56:58,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:58" (1/1) ... [2020-11-07 01:56:58,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:56:58,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:56:58,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:58,714 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:56:58,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:58,796 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:56:58,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:58 WrapperNode [2020-11-07 01:56:58,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:58,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:56:58,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:56:58,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:56:58,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:58" (1/1) ... [2020-11-07 01:56:58,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:58" (1/1) ... [2020-11-07 01:56:58,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:58" (1/1) ... [2020-11-07 01:56:58,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:58" (1/1) ... [2020-11-07 01:56:58,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:58" (1/1) ... [2020-11-07 01:56:58,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:58" (1/1) ... [2020-11-07 01:56:58,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:58" (1/1) ... [2020-11-07 01:56:58,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:56:58,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:56:58,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:56:58,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:56:58,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:58" (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 01:56:59,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:56:59,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:56:59,012 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:56:59,013 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 01:56:59,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 01:56:59,013 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:56:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:56:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:56:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:56:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:56:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 01:56:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 01:56:59,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:56:59,016 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 01:56:59,016 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:56:59,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 01:56:59,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:56:59,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:56:59,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:56:59,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:56:59,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:56:59,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:56:59,578 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:56:59,578 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-07 01:56:59,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:59 BoogieIcfgContainer [2020-11-07 01:56:59,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:56:59,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:56:59,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:56:59,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:56:59,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:56:58" (1/3) ... [2020-11-07 01:56:59,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4478c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:59, skipping insertion in model container [2020-11-07 01:56:59,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:58" (2/3) ... [2020-11-07 01:56:59,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4478c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:59, skipping insertion in model container [2020-11-07 01:56:59,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:59" (3/3) ... [2020-11-07 01:56:59,592 INFO L111 eAbstractionObserver]: Analyzing ICFG ss1f.c [2020-11-07 01:56:59,609 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:56:59,614 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:56:59,628 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:56:59,656 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:56:59,656 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:56:59,656 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:56:59,657 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:56:59,657 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:56:59,657 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:56:59,657 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:56:59,657 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:56:59,680 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-11-07 01:56:59,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-07 01:56:59,692 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:59,693 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] [2020-11-07 01:56:59,694 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:59,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:59,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1397187795, now seen corresponding path program 1 times [2020-11-07 01:56:59,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:59,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732268395] [2020-11-07 01:56:59,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:59,796 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:00,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:57:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:00,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-11-07 01:57:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:00,092 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 01:57:00,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732268395] [2020-11-07 01:57:00,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:57:00,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:57:00,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951282557] [2020-11-07 01:57:00,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:57:00,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:57:00,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:57:00,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:57:00,122 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 3 states. [2020-11-07 01:57:00,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:57:00,396 INFO L93 Difference]: Finished difference Result 152 states and 172 transitions. [2020-11-07 01:57:00,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:57:00,398 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-11-07 01:57:00,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:57:00,408 INFO L225 Difference]: With dead ends: 152 [2020-11-07 01:57:00,409 INFO L226 Difference]: Without dead ends: 77 [2020-11-07 01:57:00,413 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 01:57:00,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-07 01:57:00,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-11-07 01:57:00,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-07 01:57:00,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2020-11-07 01:57:00,488 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 48 [2020-11-07 01:57:00,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:57:00,491 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 80 transitions. [2020-11-07 01:57:00,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:57:00,491 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 80 transitions. [2020-11-07 01:57:00,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-07 01:57:00,497 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:57:00,497 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] [2020-11-07 01:57:00,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:57:00,498 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:57:00,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:57:00,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1972237779, now seen corresponding path program 1 times [2020-11-07 01:57:00,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:57:00,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230826753] [2020-11-07 01:57:00,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:57:00,518 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:57:00,562 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-11-07 01:57:00,562 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 01:57:00,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:57:00,585 WARN L253 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-07 01:57:00,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:57:00 BoogieIcfgContainer [2020-11-07 01:57:00,586 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:57:00,591 INFO L168 Benchmark]: Toolchain (without parser) took 2131.82 ms. Allocated memory is still 154.1 MB. Free memory was 130.2 MB in the beginning and 73.8 MB in the end (delta: 56.5 MB). Peak memory consumption was 57.3 MB. Max. memory is 8.0 GB. [2020-11-07 01:57:00,593 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 154.1 MB. Free memory was 129.6 MB in the beginning and 129.6 MB in the end (delta: 77.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:57:00,594 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.74 ms. Allocated memory is still 154.1 MB. Free memory was 129.5 MB in the beginning and 118.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:57:00,595 INFO L168 Benchmark]: Boogie Preprocessor took 95.36 ms. Allocated memory is still 154.1 MB. Free memory was 118.9 MB in the beginning and 117.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 01:57:00,596 INFO L168 Benchmark]: RCFGBuilder took 684.25 ms. Allocated memory is still 154.1 MB. Free memory was 117.2 MB in the beginning and 127.8 MB in the end (delta: -10.6 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:57:00,597 INFO L168 Benchmark]: TraceAbstraction took 1003.61 ms. Allocated memory is still 154.1 MB. Free memory was 127.3 MB in the beginning and 73.8 MB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:57:00,602 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 154.1 MB. Free memory was 129.6 MB in the beginning and 129.6 MB in the end (delta: 77.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 334.74 ms. Allocated memory is still 154.1 MB. Free memory was 129.5 MB in the beginning and 118.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 95.36 ms. Allocated memory is still 154.1 MB. Free memory was 118.9 MB in the beginning and 117.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 684.25 ms. Allocated memory is still 154.1 MB. Free memory was 117.2 MB in the beginning and 127.8 MB in the end (delta: -10.6 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1003.61 ms. Allocated memory is still 154.1 MB. Free memory was 127.3 MB in the beginning and 73.8 MB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND FALSE !(i