/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/eqn4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:59:51,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:59:51,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:59:51,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 22:59:51,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 22:59:51,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 22:59:51,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 22:59:51,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 22:59:51,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 22:59:51,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 22:59:51,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 22:59:51,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 22:59:51,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:59:51,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:59:51,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:59:51,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:59:51,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:59:51,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:59:51,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:59:51,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:59:51,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:59:51,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:59:51,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:59:51,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:59:51,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 22:59:51,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 22:59:51,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 22:59:51,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 22:59:51,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 22:59:51,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 22:59:51,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 22:59:51,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 22:59:51,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 22:59:51,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:59:51,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:59:51,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:59:51,296 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 22:59:51,307 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:59:51,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:59:51,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:59:51,309 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:59:51,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:59:51,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:59:51,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:59:51,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:59:51,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:59:51,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:59:51,311 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:59:51,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:59:51,311 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:59:51,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:59:51,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:59:51,312 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:59:51,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:59:51,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:59:51,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:59:51,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:59:51,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:59:51,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:59:51,313 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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 [2020-08-22 22:59:51,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:59:51,638 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:59:51,644 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:59:51,647 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:59:51,648 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:59:51,648 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn4f.c [2020-08-22 22:59:51,727 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a48e18c6/d616c70d014f42758d35ab7278bf49d7/FLAG0337276ef [2020-08-22 22:59:52,269 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:59:52,269 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn4f.c [2020-08-22 22:59:52,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a48e18c6/d616c70d014f42758d35ab7278bf49d7/FLAG0337276ef [2020-08-22 22:59:52,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a48e18c6/d616c70d014f42758d35ab7278bf49d7 [2020-08-22 22:59:52,613 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:59:52,614 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:59:52,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:59:52,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:59:52,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:59:52,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:59:52" (1/1) ... [2020-08-22 22:59:52,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15e2689d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:52, skipping insertion in model container [2020-08-22 22:59:52,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:59:52" (1/1) ... [2020-08-22 22:59:52,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:59:52,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:59:52,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:59:52,838 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:59:52,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:59:52,882 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:59:52,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:52 WrapperNode [2020-08-22 22:59:52,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:59:52,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:59:52,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:59:52,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:59:52,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:52" (1/1) ... [2020-08-22 22:59:52,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:52" (1/1) ... [2020-08-22 22:59:52,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:52" (1/1) ... [2020-08-22 22:59:52,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:52" (1/1) ... [2020-08-22 22:59:52,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:52" (1/1) ... [2020-08-22 22:59:53,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:52" (1/1) ... [2020-08-22 22:59:53,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:52" (1/1) ... [2020-08-22 22:59:53,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:59:53,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:59:53,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:59:53,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:59:53,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:52" (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 [2020-08-22 22:59:53,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:59:53,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:59:53,081 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 22:59:53,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 22:59:53,081 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:59:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:59:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 22:59:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 22:59:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 22:59:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 22:59:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 22:59:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:59:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 22:59:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 22:59:53,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 22:59:53,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:59:53,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:59:53,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 22:59:53,394 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:59:53,395 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-22 22:59:53,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:59:53 BoogieIcfgContainer [2020-08-22 22:59:53,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:59:53,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:59:53,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:59:53,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:59:53,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:59:52" (1/3) ... [2020-08-22 22:59:53,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e55844e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:59:53, skipping insertion in model container [2020-08-22 22:59:53,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:52" (2/3) ... [2020-08-22 22:59:53,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e55844e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:59:53, skipping insertion in model container [2020-08-22 22:59:53,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:59:53" (3/3) ... [2020-08-22 22:59:53,414 INFO L109 eAbstractionObserver]: Analyzing ICFG eqn4f.c [2020-08-22 22:59:53,430 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:59:53,445 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 22:59:53,492 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 22:59:53,538 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:59:53,538 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:59:53,538 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:59:53,538 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:59:53,539 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:59:53,539 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:59:53,539 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:59:53,539 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:59:53,557 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-08-22 22:59:53,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-22 22:59:53,571 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:59:53,572 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] [2020-08-22 22:59:53,573 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:59:53,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:59:53,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1558850377, now seen corresponding path program 1 times [2020-08-22 22:59:53,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:59:53,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906978976] [2020-08-22 22:59:53,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:59:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:53,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:59:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:53,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 22:59:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:53,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:59:53,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906978976] [2020-08-22 22:59:53,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:59:53,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 22:59:53,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552733016] [2020-08-22 22:59:53,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 22:59:53,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:59:53,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 22:59:53,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:59:53,977 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 3 states. [2020-08-22 22:59:54,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:59:54,267 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2020-08-22 22:59:54,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 22:59:54,270 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-08-22 22:59:54,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:59:54,279 INFO L225 Difference]: With dead ends: 109 [2020-08-22 22:59:54,279 INFO L226 Difference]: Without dead ends: 56 [2020-08-22 22:59:54,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:59:54,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-08-22 22:59:54,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-08-22 22:59:54,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-22 22:59:54,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-08-22 22:59:54,336 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 35 [2020-08-22 22:59:54,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:59:54,337 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-08-22 22:59:54,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 22:59:54,338 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-08-22 22:59:54,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-22 22:59:54,340 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:59:54,340 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] [2020-08-22 22:59:54,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:59:54,341 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:59:54,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:59:54,342 INFO L82 PathProgramCache]: Analyzing trace with hash -574468364, now seen corresponding path program 1 times [2020-08-22 22:59:54,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:59:54,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043496860] [2020-08-22 22:59:54,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:59:54,399 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 22:59:54,400 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-22 22:59:54,400 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 22:59:54,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:59:54,426 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-22 22:59:54,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 10:59:54 BoogieIcfgContainer [2020-08-22 22:59:54,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 22:59:54,429 INFO L168 Benchmark]: Toolchain (without parser) took 1814.03 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 102.7 MB in the beginning and 120.0 MB in the end (delta: -17.3 MB). Peak memory consumption was 46.6 MB. Max. memory is 7.1 GB. [2020-08-22 22:59:54,430 INFO L168 Benchmark]: CDTParser took 0.91 ms. Allocated memory is still 138.4 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 22:59:54,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.77 ms. Allocated memory is still 138.4 MB. Free memory was 102.5 MB in the beginning and 92.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-22 22:59:54,432 INFO L168 Benchmark]: Boogie Preprocessor took 122.24 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 92.0 MB in the beginning and 179.7 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-08-22 22:59:54,433 INFO L168 Benchmark]: RCFGBuilder took 398.39 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 160.1 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-08-22 22:59:54,434 INFO L168 Benchmark]: TraceAbstraction took 1020.60 ms. Allocated memory is still 202.4 MB. Free memory was 159.4 MB in the beginning and 120.0 MB in the end (delta: 39.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 7.1 GB. [2020-08-22 22:59:54,439 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91 ms. Allocated memory is still 138.4 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 267.77 ms. Allocated memory is still 138.4 MB. Free memory was 102.5 MB in the beginning and 92.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.24 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 92.0 MB in the beginning and 179.7 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 398.39 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 160.1 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1020.60 ms. Allocated memory is still 202.4 MB. Free memory was 159.4 MB in the beginning and 120.0 MB in the end (delta: 39.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: 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: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] a[0] = 8 [L30] b[0] = 0 [L31] i=1 [L31] COND FALSE !(i