/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/s42iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:45:22,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:45:22,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:45:22,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 21:45:22,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 21:45:22,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 21:45:22,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 21:45:22,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 21:45:22,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 21:45:22,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 21:45:22,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 21:45:22,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 21:45:22,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 21:45:22,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 21:45:22,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 21:45:22,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 21:45:22,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 21:45:22,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 21:45:22,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 21:45:22,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 21:45:22,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 21:45:22,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 21:45:22,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 21:45:22,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 21:45:22,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 21:45:22,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 21:45:22,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 21:45:22,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 21:45:22,862 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 21:45:22,895 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:45:22,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:45:22,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:45:22,902 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:45:22,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:45:22,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:45:22,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:45:22,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:45:22,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:45:22,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:45:22,905 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:45:22,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:45:22,905 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:45:22,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:45:22,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:45:22,906 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:45:22,907 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:45:22,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:45:22,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:45:22,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:45:22,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:45:22,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:45:22,908 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:45:23,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:45:23,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:45:23,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:45:23,399 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:45:23,400 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:45:23,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s42iff.c [2020-10-23 21:45:23,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1939a6640/d8f2a45740b94dbfa22238fe67fbf103/FLAG6de422295 [2020-10-23 21:45:24,173 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:45:24,173 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s42iff.c [2020-10-23 21:45:24,182 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1939a6640/d8f2a45740b94dbfa22238fe67fbf103/FLAG6de422295 [2020-10-23 21:45:24,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1939a6640/d8f2a45740b94dbfa22238fe67fbf103 [2020-10-23 21:45:24,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:45:24,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:45:24,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:45:24,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:45:24,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:45:24,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:45:24" (1/1) ... [2020-10-23 21:45:24,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43cd0bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:24, skipping insertion in model container [2020-10-23 21:45:24,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:45:24" (1/1) ... [2020-10-23 21:45:24,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:45:24,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:45:24,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:45:24,947 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:45:24,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:45:25,007 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:45:25,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:25 WrapperNode [2020-10-23 21:45:25,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:45:25,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:45:25,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:45:25,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:45:25,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:25" (1/1) ... [2020-10-23 21:45:25,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:25" (1/1) ... [2020-10-23 21:45:25,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:25" (1/1) ... [2020-10-23 21:45:25,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:25" (1/1) ... [2020-10-23 21:45:25,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:25" (1/1) ... [2020-10-23 21:45:25,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:25" (1/1) ... [2020-10-23 21:45:25,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:25" (1/1) ... [2020-10-23 21:45:25,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:45:25,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:45:25,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:45:25,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:45:25,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:45:25,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:45:25,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:45:25,173 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:45:25,173 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 21:45:25,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 21:45:25,174 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:45:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:45:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:45:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:45:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:45:25,175 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 21:45:25,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 21:45:25,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 21:45:25,175 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 21:45:25,175 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:45:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 21:45:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:45:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:45:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:45:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:45:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:45:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:45:25,654 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:45:25,655 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-23 21:45:25,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:45:25 BoogieIcfgContainer [2020-10-23 21:45:25,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:45:25,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:45:25,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:45:25,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:45:25,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:45:24" (1/3) ... [2020-10-23 21:45:25,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d437e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:45:25, skipping insertion in model container [2020-10-23 21:45:25,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:25" (2/3) ... [2020-10-23 21:45:25,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d437e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:45:25, skipping insertion in model container [2020-10-23 21:45:25,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:45:25" (3/3) ... [2020-10-23 21:45:25,667 INFO L111 eAbstractionObserver]: Analyzing ICFG s42iff.c [2020-10-23 21:45:25,681 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:45:25,688 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:45:25,704 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:45:25,731 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:45:25,731 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:45:25,731 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:45:25,731 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:45:25,731 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:45:25,731 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:45:25,732 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:45:25,732 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:45:25,751 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-10-23 21:45:25,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-23 21:45:25,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:25,763 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] [2020-10-23 21:45:25,764 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:25,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:25,771 INFO L82 PathProgramCache]: Analyzing trace with hash -525896098, now seen corresponding path program 1 times [2020-10-23 21:45:25,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:25,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273643982] [2020-10-23 21:45:25,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:25,875 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:26,144 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-23 21:45:26,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:45:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:26,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:45:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:45:26,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273643982] [2020-10-23 21:45:26,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:45:26,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 21:45:26,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373885966] [2020-10-23 21:45:26,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 21:45:26,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:45:26,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 21:45:26,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:45:26,214 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 3 states. [2020-10-23 21:45:26,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:45:26,610 INFO L93 Difference]: Finished difference Result 153 states and 173 transitions. [2020-10-23 21:45:26,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 21:45:26,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-10-23 21:45:26,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:45:26,623 INFO L225 Difference]: With dead ends: 153 [2020-10-23 21:45:26,623 INFO L226 Difference]: Without dead ends: 74 [2020-10-23 21:45:26,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:45:26,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-23 21:45:26,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-23 21:45:26,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-23 21:45:26,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-10-23 21:45:26,685 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 39 [2020-10-23 21:45:26,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:45:26,686 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-10-23 21:45:26,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 21:45:26,686 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-10-23 21:45:26,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-23 21:45:26,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:26,689 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] [2020-10-23 21:45:26,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:45:26,689 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:26,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:26,690 INFO L82 PathProgramCache]: Analyzing trace with hash -2126155324, now seen corresponding path program 1 times [2020-10-23 21:45:26,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:26,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913442652] [2020-10-23 21:45:26,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:26,695 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:26,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:45:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:26,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:45:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:26,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:45:26,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913442652] [2020-10-23 21:45:26,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:45:26,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 21:45:26,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706583663] [2020-10-23 21:45:26,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 21:45:26,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:45:26,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 21:45:26,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 21:45:26,913 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 5 states. [2020-10-23 21:45:27,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:45:27,360 INFO L93 Difference]: Finished difference Result 149 states and 161 transitions. [2020-10-23 21:45:27,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 21:45:27,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-23 21:45:27,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:45:27,364 INFO L225 Difference]: With dead ends: 149 [2020-10-23 21:45:27,364 INFO L226 Difference]: Without dead ends: 108 [2020-10-23 21:45:27,366 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 [2020-10-23 21:45:27,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-23 21:45:27,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 77. [2020-10-23 21:45:27,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-23 21:45:27,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-23 21:45:27,384 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 39 [2020-10-23 21:45:27,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:45:27,385 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-23 21:45:27,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 21:45:27,385 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-23 21:45:27,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-23 21:45:27,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:27,387 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] [2020-10-23 21:45:27,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:45:27,388 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:27,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:27,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1592075576, now seen corresponding path program 1 times [2020-10-23 21:45:27,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:27,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224092720] [2020-10-23 21:45:27,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:27,619 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 21:45:27,627 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:45:27,761 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:45:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:45:27,842 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:45:27,913 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 21:45:27,920 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 21:45:27,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 21:45:27,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:45:27 BoogieIcfgContainer [2020-10-23 21:45:27,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 21:45:27,956 INFO L168 Benchmark]: Toolchain (without parser) took 3386.13 ms. Allocated memory was 167.8 MB in the beginning and 203.4 MB in the end (delta: 35.7 MB). Free memory was 125.6 MB in the beginning and 176.3 MB in the end (delta: -50.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:45:27,959 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 167.8 MB. Free memory is still 142.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:45:27,962 INFO L168 Benchmark]: CACSL2BoogieTranslator took 429.90 ms. Allocated memory is still 167.8 MB. Free memory was 125.1 MB in the beginning and 115.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:27,963 INFO L168 Benchmark]: Boogie Preprocessor took 66.47 ms. Allocated memory is still 167.8 MB. Free memory was 115.1 MB in the beginning and 150.4 MB in the end (delta: -35.3 MB). Peak memory consumption was 5.0 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:27,964 INFO L168 Benchmark]: RCFGBuilder took 579.73 ms. Allocated memory is still 167.8 MB. Free memory was 150.4 MB in the beginning and 128.9 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:27,965 INFO L168 Benchmark]: TraceAbstraction took 2291.99 ms. Allocated memory was 167.8 MB in the beginning and 203.4 MB in the end (delta: 35.7 MB). Free memory was 128.4 MB in the beginning and 176.3 MB in the end (delta: -47.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:45:27,975 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 167.8 MB. Free memory is still 142.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 429.90 ms. Allocated memory is still 167.8 MB. Free memory was 125.1 MB in the beginning and 115.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 66.47 ms. Allocated memory is still 167.8 MB. Free memory was 115.1 MB in the beginning and 150.4 MB in the end (delta: -35.3 MB). Peak memory consumption was 5.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 579.73 ms. Allocated memory is still 167.8 MB. Free memory was 150.4 MB in the beginning and 128.9 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2291.99 ms. Allocated memory was 167.8 MB in the beginning and 203.4 MB in the end (delta: 35.7 MB). Free memory was 128.4 MB in the beginning and 176.3 MB in the end (delta: -47.9 MB). There was no memory consumed. 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); [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i