/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/modnf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 02:23:36,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 02:23:36,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 02:23:36,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 02:23:36,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 02:23:36,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 02:23:36,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 02:23:36,387 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 02:23:36,400 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 02:23:36,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 02:23:36,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 02:23:36,403 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 02:23:36,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 02:23:36,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 02:23:36,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 02:23:36,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 02:23:36,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 02:23:36,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 02:23:36,405 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 02:23:36,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 02:23:36,405 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 02:23:36,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 02:23:36,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 02:23:36,406 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 02:23:36,406 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 02:23:36,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 02:23:36,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:23:36,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 02:23:36,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 02:23:36,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 02:23:36,407 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 02:23:36,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 02:23:36,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 02:23:36,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 02:23:36,909 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 02:23:36,910 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 02:23:36,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modnf.c [2020-10-24 02:23:37,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9080d12e/a2ceccbf7f29476bb37707025495609a/FLAG2dfc468d4 [2020-10-24 02:23:37,715 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 02:23:37,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/modnf.c [2020-10-24 02:23:37,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9080d12e/a2ceccbf7f29476bb37707025495609a/FLAG2dfc468d4 [2020-10-24 02:23:38,069 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9080d12e/a2ceccbf7f29476bb37707025495609a [2020-10-24 02:23:38,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 02:23:38,080 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 02:23:38,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 02:23:38,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 02:23:38,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 02:23:38,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:23:38" (1/1) ... [2020-10-24 02:23:38,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f17360a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:38, skipping insertion in model container [2020-10-24 02:23:38,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:23:38" (1/1) ... [2020-10-24 02:23:38,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 02:23:38,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 02:23:38,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:23:38,301 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 02:23:38,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:23:38,340 INFO L208 MainTranslator]: Completed translation [2020-10-24 02:23:38,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:38 WrapperNode [2020-10-24 02:23:38,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 02:23:38,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 02:23:38,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 02:23:38,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 02:23:38,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:38" (1/1) ... [2020-10-24 02:23:38,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:38" (1/1) ... [2020-10-24 02:23:38,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:38" (1/1) ... [2020-10-24 02:23:38,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:38" (1/1) ... [2020-10-24 02:23:38,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:38" (1/1) ... [2020-10-24 02:23:38,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:38" (1/1) ... [2020-10-24 02:23:38,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:38" (1/1) ... [2020-10-24 02:23:38,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 02:23:38,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 02:23:38,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 02:23:38,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 02:23:38,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:38" (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 [2020-10-24 02:23:38,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 02:23:38,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 02:23:38,464 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 02:23:38,464 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-24 02:23:38,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-24 02:23:38,465 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 02:23:38,465 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 02:23:38,465 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 02:23:38,465 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 02:23:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 02:23:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-24 02:23:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-24 02:23:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 02:23:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-24 02:23:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 02:23:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-24 02:23:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 02:23:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 02:23:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 02:23:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 02:23:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 02:23:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 02:23:39,083 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 02:23:39,084 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-24 02:23:39,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:23:39 BoogieIcfgContainer [2020-10-24 02:23:39,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 02:23:39,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 02:23:39,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 02:23:39,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 02:23:39,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:23:38" (1/3) ... [2020-10-24 02:23:39,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645581a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:23:39, skipping insertion in model container [2020-10-24 02:23:39,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:38" (2/3) ... [2020-10-24 02:23:39,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645581a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:23:39, skipping insertion in model container [2020-10-24 02:23:39,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:23:39" (3/3) ... [2020-10-24 02:23:39,102 INFO L111 eAbstractionObserver]: Analyzing ICFG modnf.c [2020-10-24 02:23:39,116 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 02:23:39,122 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 02:23:39,137 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 02:23:39,176 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 02:23:39,177 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 02:23:39,177 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 02:23:39,177 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 02:23:39,177 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 02:23:39,177 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 02:23:39,178 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 02:23:39,178 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 02:23:39,201 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-10-24 02:23:39,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-24 02:23:39,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:23:39,216 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] [2020-10-24 02:23:39,216 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:23:39,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:23:39,228 INFO L82 PathProgramCache]: Analyzing trace with hash -2078648093, now seen corresponding path program 1 times [2020-10-24 02:23:39,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:23:39,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013714891] [2020-10-24 02:23:39,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:23:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:39,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:23:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:39,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-24 02:23:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:23:39,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:23:39,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013714891] [2020-10-24 02:23:39,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:23:39,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-24 02:23:39,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054135226] [2020-10-24 02:23:39,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 02:23:39,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:23:39,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 02:23:39,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 02:23:39,792 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 5 states. [2020-10-24 02:23:40,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:23:40,158 INFO L93 Difference]: Finished difference Result 137 states and 160 transitions. [2020-10-24 02:23:40,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 02:23:40,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-24 02:23:40,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:23:40,171 INFO L225 Difference]: With dead ends: 137 [2020-10-24 02:23:40,171 INFO L226 Difference]: Without dead ends: 76 [2020-10-24 02:23:40,175 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 [2020-10-24 02:23:40,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-24 02:23:40,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 60. [2020-10-24 02:23:40,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-24 02:23:40,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2020-10-24 02:23:40,236 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 39 [2020-10-24 02:23:40,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:23:40,236 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2020-10-24 02:23:40,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 02:23:40,237 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2020-10-24 02:23:40,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-24 02:23:40,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:23:40,239 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] [2020-10-24 02:23:40,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 02:23:40,240 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:23:40,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:23:40,240 INFO L82 PathProgramCache]: Analyzing trace with hash -183430070, now seen corresponding path program 1 times [2020-10-24 02:23:40,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:23:40,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915455251] [2020-10-24 02:23:40,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:23:40,264 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-24 02:23:40,265 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-24 02:23:40,265 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 02:23:40,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 02:23:40,287 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-24 02:23:40,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:23:40 BoogieIcfgContainer [2020-10-24 02:23:40,288 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 02:23:40,290 INFO L168 Benchmark]: Toolchain (without parser) took 2215.12 ms. Allocated memory is still 157.3 MB. Free memory was 134.0 MB in the beginning and 125.6 MB in the end (delta: 8.4 MB). Peak memory consumption was 9.0 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:40,291 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 157.3 MB. Free memory is still 131.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 02:23:40,296 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.42 ms. Allocated memory is still 157.3 MB. Free memory was 133.5 MB in the beginning and 123.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:40,298 INFO L168 Benchmark]: Boogie Preprocessor took 39.53 ms. Allocated memory is still 157.3 MB. Free memory was 123.8 MB in the beginning and 122.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:40,299 INFO L168 Benchmark]: RCFGBuilder took 704.01 ms. Allocated memory is still 157.3 MB. Free memory was 122.1 MB in the beginning and 133.6 MB in the end (delta: -11.5 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:40,299 INFO L168 Benchmark]: TraceAbstraction took 1196.37 ms. Allocated memory is still 157.3 MB. Free memory was 133.0 MB in the beginning and 125.6 MB in the end (delta: 7.4 MB). Peak memory consumption was 8.5 MB. Max. memory is 8.0 GB. [2020-10-24 02:23:40,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 157.3 MB. Free memory is still 131.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 259.42 ms. Allocated memory is still 157.3 MB. Free memory was 133.5 MB in the beginning and 123.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.53 ms. Allocated memory is still 157.3 MB. Free memory was 123.8 MB in the beginning and 122.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 704.01 ms. Allocated memory is still 157.3 MB. Free memory was 122.1 MB in the beginning and 133.6 MB in the end (delta: -11.5 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1196.37 ms. Allocated memory is still 157.3 MB. Free memory was 133.0 MB in the beginning and 125.6 MB in the end (delta: 7.4 MB). Peak memory consumption was 8.5 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] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i