/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/condmf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:15:35,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:15:35,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:15:35,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:15:35,892 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:15:35,905 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:15:35,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:15:35,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:15:35,908 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:15:35,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:15:35,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:15:35,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:15:35,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:15:35,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:15:35,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:15:35,909 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:15:35,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:15:35,910 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:15:35,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:15:35,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:15:35,910 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:15:35,911 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:15:35,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:15:35,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:15:35,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:15:35,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:15:35,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:15:35,912 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:15:36,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:15:36,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:15:36,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:15:36,342 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:15:36,343 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:15:36,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condmf.c [2021-02-24 00:15:36,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca98fe065/81305b40a8d943a0bed0a0d9fcbd145e/FLAG7ecd28587 [2021-02-24 00:15:37,223 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:15:37,224 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condmf.c [2021-02-24 00:15:37,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca98fe065/81305b40a8d943a0bed0a0d9fcbd145e/FLAG7ecd28587 [2021-02-24 00:15:37,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca98fe065/81305b40a8d943a0bed0a0d9fcbd145e [2021-02-24 00:15:37,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:15:37,584 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:15:37,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:15:37,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:15:37,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:15:37,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:15:37" (1/1) ... [2021-02-24 00:15:37,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1448bddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:37, skipping insertion in model container [2021-02-24 00:15:37,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:15:37" (1/1) ... [2021-02-24 00:15:37,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:15:37,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:15:37,777 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condmf.c[589,602] [2021-02-24 00:15:37,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:15:37,807 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:15:37,822 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condmf.c[589,602] [2021-02-24 00:15:37,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:15:37,848 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:15:37,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:37 WrapperNode [2021-02-24 00:15:37,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:15:37,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:15:37,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:15:37,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:15:37,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:37" (1/1) ... [2021-02-24 00:15:37,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:37" (1/1) ... [2021-02-24 00:15:37,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:37" (1/1) ... [2021-02-24 00:15:37,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:37" (1/1) ... [2021-02-24 00:15:37,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:37" (1/1) ... [2021-02-24 00:15:37,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:37" (1/1) ... [2021-02-24 00:15:37,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:37" (1/1) ... [2021-02-24 00:15:37,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:15:37,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:15:37,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:15:37,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:15:37,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:37" (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 [2021-02-24 00:15:38,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:15:38,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:15:38,013 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:15:38,013 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:15:38,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:15:38,013 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:15:38,014 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:15:38,014 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:15:38,014 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:15:38,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:15:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:15:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:15:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:15:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 00:15:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:15:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 00:15:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:15:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:15:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:15:38,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:15:38,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:15:38,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:15:38,546 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:15:38,547 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-24 00:15:38,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:15:38 BoogieIcfgContainer [2021-02-24 00:15:38,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:15:38,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:15:38,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:15:38,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:15:38,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:15:37" (1/3) ... [2021-02-24 00:15:38,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1f796a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:15:38, skipping insertion in model container [2021-02-24 00:15:38,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:37" (2/3) ... [2021-02-24 00:15:38,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1f796a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:15:38, skipping insertion in model container [2021-02-24 00:15:38,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:15:38" (3/3) ... [2021-02-24 00:15:38,566 INFO L111 eAbstractionObserver]: Analyzing ICFG condmf.c [2021-02-24 00:15:38,575 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:15:38,581 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:15:38,603 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:15:38,638 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:15:38,638 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:15:38,638 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:15:38,638 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:15:38,639 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:15:38,639 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:15:38,639 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:15:38,639 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:15:38,663 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2021-02-24 00:15:38,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 00:15:38,686 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:38,688 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] [2021-02-24 00:15:38,688 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:38,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:38,698 INFO L82 PathProgramCache]: Analyzing trace with hash -2046579494, now seen corresponding path program 1 times [2021-02-24 00:15:38,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:38,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028586578] [2021-02-24 00:15:38,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:39,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:39,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:39,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:39,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:39,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:15:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:39,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:39,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:39,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:15:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:39,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:39,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:15:39,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028586578] [2021-02-24 00:15:39,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:15:39,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:15:39,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497167004] [2021-02-24 00:15:39,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:15:39,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:15:39,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:15:39,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:15:39,150 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2021-02-24 00:15:39,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:15:39,378 INFO L93 Difference]: Finished difference Result 107 states and 124 transitions. [2021-02-24 00:15:39,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:15:39,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2021-02-24 00:15:39,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:15:39,390 INFO L225 Difference]: With dead ends: 107 [2021-02-24 00:15:39,390 INFO L226 Difference]: Without dead ends: 57 [2021-02-24 00:15:39,394 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 [2021-02-24 00:15:39,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-02-24 00:15:39,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-02-24 00:15:39,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-02-24 00:15:39,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2021-02-24 00:15:39,453 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 36 [2021-02-24 00:15:39,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:15:39,454 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2021-02-24 00:15:39,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:15:39,454 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2021-02-24 00:15:39,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 00:15:39,456 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:39,456 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] [2021-02-24 00:15:39,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:15:39,457 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:39,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:39,458 INFO L82 PathProgramCache]: Analyzing trace with hash 968384054, now seen corresponding path program 1 times [2021-02-24 00:15:39,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:39,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011506521] [2021-02-24 00:15:39,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:39,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:39,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:39,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:39,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:15:39,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:39,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:15:39,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:39,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:39,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:15:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:39,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:39,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:39,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:15:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:39,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:39,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:39,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:15:39,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011506521] [2021-02-24 00:15:39,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:15:39,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 00:15:39,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560003889] [2021-02-24 00:15:39,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:15:39,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:15:39,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:15:39,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:15:39,710 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 5 states. [2021-02-24 00:15:40,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:15:40,226 INFO L93 Difference]: Finished difference Result 103 states and 112 transitions. [2021-02-24 00:15:40,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:15:40,227 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2021-02-24 00:15:40,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:15:40,234 INFO L225 Difference]: With dead ends: 103 [2021-02-24 00:15:40,234 INFO L226 Difference]: Without dead ends: 77 [2021-02-24 00:15:40,236 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 [2021-02-24 00:15:40,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-02-24 00:15:40,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 59. [2021-02-24 00:15:40,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-02-24 00:15:40,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2021-02-24 00:15:40,258 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 36 [2021-02-24 00:15:40,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:15:40,259 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2021-02-24 00:15:40,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:15:40,259 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2021-02-24 00:15:40,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-24 00:15:40,261 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:40,261 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] [2021-02-24 00:15:40,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:15:40,261 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:40,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:40,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1674472418, now seen corresponding path program 1 times [2021-02-24 00:15:40,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:40,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733410659] [2021-02-24 00:15:40,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 00:15:40,348 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 00:15:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 00:15:40,398 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 00:15:40,435 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 00:15:40,436 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 00:15:40,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:15:40,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:15:40 BoogieIcfgContainer [2021-02-24 00:15:40,488 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:15:40,490 INFO L168 Benchmark]: Toolchain (without parser) took 2918.87 ms. Allocated memory was 169.9 MB in the beginning and 231.7 MB in the end (delta: 61.9 MB). Free memory was 147.2 MB in the beginning and 160.6 MB in the end (delta: -13.4 MB). Peak memory consumption was 49.7 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:40,491 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 169.9 MB. Free memory is still 143.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:15:40,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.19 ms. Allocated memory is still 169.9 MB. Free memory was 146.2 MB in the beginning and 135.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:40,493 INFO L168 Benchmark]: Boogie Preprocessor took 45.02 ms. Allocated memory is still 169.9 MB. Free memory was 135.8 MB in the beginning and 134.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:40,494 INFO L168 Benchmark]: RCFGBuilder took 654.09 ms. Allocated memory is still 169.9 MB. Free memory was 134.0 MB in the beginning and 146.4 MB in the end (delta: -12.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:40,496 INFO L168 Benchmark]: TraceAbstraction took 1934.82 ms. Allocated memory was 169.9 MB in the beginning and 231.7 MB in the end (delta: 61.9 MB). Free memory was 145.9 MB in the beginning and 160.6 MB in the end (delta: -14.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:40,503 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 169.9 MB. Free memory is still 143.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 259.19 ms. Allocated memory is still 169.9 MB. Free memory was 146.2 MB in the beginning and 135.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.02 ms. Allocated memory is still 169.9 MB. Free memory was 135.8 MB in the beginning and 134.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 654.09 ms. Allocated memory is still 169.9 MB. Free memory was 134.0 MB in the beginning and 146.4 MB in the end (delta: -12.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1934.82 ms. Allocated memory was 169.9 MB in the beginning and 231.7 MB in the end (delta: 61.9 MB). Free memory was 145.9 MB in the beginning and 160.6 MB in the end (delta: -14.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() VAL [\old(N)=0, __VERIFIER_nondet_int()=1, N=1] [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; VAL [\old(N)=0, N=1] [L28] int *a = malloc(sizeof(int)*N); VAL [\old(N)=0, a={-2:0}, malloc(sizeof(int)*N)={-2:0}, N=1] [L30] i = 0 VAL [\old(N)=0, a={-2:0}, i=0, malloc(sizeof(int)*N)={-2:0}, N=1] [L30] COND TRUE i < N VAL [\old(N)=0, a={-2:0}, i=0, malloc(sizeof(int)*N)={-2:0}, N=1] [L32] a[i] = 0 VAL [\old(N)=0, a={-2:0}, i=0, malloc(sizeof(int)*N)={-2:0}, N=1] [L30] i++ VAL [\old(N)=0, a={-2:0}, i=1, malloc(sizeof(int)*N)={-2:0}, N=1] [L30] COND FALSE !(i < N) VAL [\old(N)=0, a={-2:0}, i=1, malloc(sizeof(int)*N)={-2:0}, N=1] [L35] i = 0 VAL [\old(N)=0, a={-2:0}, i=0, malloc(sizeof(int)*N)={-2:0}, N=1] [L35] COND TRUE i < N VAL [\old(N)=0, a={-2:0}, i=0, malloc(sizeof(int)*N)={-2:0}, N=1] [L37] COND TRUE N%2 == 1 VAL [\old(N)=0, a={-2:0}, i=0, malloc(sizeof(int)*N)={-2:0}, N=1] [L39] EXPR a[i] VAL [\old(N)=0, a={-2:0}, a[i]=0, i=0, malloc(sizeof(int)*N)={-2:0}, N=1] [L39] a[i] = a[i] + 2 VAL [\old(N)=0, a={-2:0}, a[i]=0, i=0, malloc(sizeof(int)*N)={-2:0}, N=1] [L35] i++ VAL [\old(N)=0, a={-2:0}, i=1, malloc(sizeof(int)*N)={-2:0}, N=1] [L35] COND FALSE !(i < N) VAL [\old(N)=0, a={-2:0}, i=1, malloc(sizeof(int)*N)={-2:0}, N=1] [L47] i = 0 VAL [\old(N)=0, a={-2:0}, i=0, malloc(sizeof(int)*N)={-2:0}, N=1] [L47] COND TRUE i < N VAL [\old(N)=0, a={-2:0}, i=0, malloc(sizeof(int)*N)={-2:0}, N=1] [L49] EXPR a[i] VAL [\old(N)=0, a={-2:0}, a[i]=2, i=0, malloc(sizeof(int)*N)={-2:0}, N=1] [L49] CALL __VERIFIER_assert(a[i] % 2 == N % 2) VAL [\old(cond)=0, \old(N)=0, N=1] [L15] COND TRUE !(cond) VAL [\old(cond)=0, \old(N)=0, cond=0, N=1] [L15] reach_error() VAL [\old(cond)=0, \old(N)=0, cond=0, N=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 109 SDtfs, 75 SDslu, 41 SDs, 0 SdLazy, 154 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 5320 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...