/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/indp2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:15:49,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:15:49,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:15:49,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:15:49,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:15:49,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:15:49,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:15:49,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:15:49,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:15:49,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:15:49,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:15:49,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:15:49,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:15:49,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:15:49,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:15:49,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:15:49,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:15:49,347 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 00:15:49,359 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:15:49,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:15:49,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:15:49,361 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:15:49,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:15:49,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:15:49,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:15:49,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:15:49,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:15:49,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:15:49,363 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:15:49,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:15:49,363 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:15:49,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:15:49,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:15:49,364 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:15:49,364 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:15:49,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:15:49,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:15:49,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:15:49,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:15:49,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:15:49,365 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:15:49,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:15:49,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:15:49,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:15:49,784 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:15:49,785 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:15:49,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp2f.c [2021-02-24 00:15:49,865 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1d842bc2/3a5c9212d88a4a4193de764c7de48482/FLAG059d6d1ec [2021-02-24 00:15:50,535 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:15:50,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp2f.c [2021-02-24 00:15:50,546 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1d842bc2/3a5c9212d88a4a4193de764c7de48482/FLAG059d6d1ec [2021-02-24 00:15:50,860 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1d842bc2/3a5c9212d88a4a4193de764c7de48482 [2021-02-24 00:15:50,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:15:50,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:15:50,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:15:50,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:15:50,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:15:50,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:15:50" (1/1) ... [2021-02-24 00:15:50,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11715568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:50, skipping insertion in model container [2021-02-24 00:15:50,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:15:50" (1/1) ... [2021-02-24 00:15:50,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:15:50,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:15:51,061 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/indp2f.c[589,602] [2021-02-24 00:15:51,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:15:51,091 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:15:51,106 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/indp2f.c[589,602] [2021-02-24 00:15:51,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:15:51,132 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:15:51,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:51 WrapperNode [2021-02-24 00:15:51,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:15:51,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:15:51,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:15:51,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:15:51,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:51" (1/1) ... [2021-02-24 00:15:51,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:51" (1/1) ... [2021-02-24 00:15:51,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:51" (1/1) ... [2021-02-24 00:15:51,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:51" (1/1) ... [2021-02-24 00:15:51,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:51" (1/1) ... [2021-02-24 00:15:51,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:51" (1/1) ... [2021-02-24 00:15:51,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:51" (1/1) ... [2021-02-24 00:15:51,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:15:51,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:15:51,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:15:51,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:15:51,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:51" (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 00:15:51,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:15:51,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:15:51,324 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:15:51,324 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:15:51,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:15:51,325 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:15:51,325 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:15:51,326 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:15:51,326 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:15:51,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:15:51,327 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:15:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:15:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:15:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 00:15:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:15:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 00:15:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:15:51,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:15:51,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:15:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:15:51,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:15:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:15:52,006 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:15:52,006 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-24 00:15:52,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:15:52 BoogieIcfgContainer [2021-02-24 00:15:52,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:15:52,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:15:52,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:15:52,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:15:52,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:15:50" (1/3) ... [2021-02-24 00:15:52,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ce864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:15:52, skipping insertion in model container [2021-02-24 00:15:52,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:51" (2/3) ... [2021-02-24 00:15:52,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ce864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:15:52, skipping insertion in model container [2021-02-24 00:15:52,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:15:52" (3/3) ... [2021-02-24 00:15:52,019 INFO L111 eAbstractionObserver]: Analyzing ICFG indp2f.c [2021-02-24 00:15:52,027 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:15:52,032 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:15:52,053 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:15:52,082 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:15:52,082 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:15:52,082 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:15:52,082 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:15:52,083 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:15:52,083 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:15:52,083 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:15:52,083 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:15:52,101 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2021-02-24 00:15:52,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 00:15:52,113 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:52,114 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] [2021-02-24 00:15:52,114 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:52,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:52,121 INFO L82 PathProgramCache]: Analyzing trace with hash -450027950, now seen corresponding path program 1 times [2021-02-24 00:15:52,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:52,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740933306] [2021-02-24 00:15:52,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:52,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:52,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:52,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:52,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:52,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:15:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:52,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:52,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:52,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:15:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:52,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:52,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:52,536 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 00:15:52,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740933306] [2021-02-24 00:15:52,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:15:52,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:15:52,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43226537] [2021-02-24 00:15:52,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:15:52,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:15:52,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:15:52,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:15:52,570 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 3 states. [2021-02-24 00:15:52,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:15:52,821 INFO L93 Difference]: Finished difference Result 115 states and 134 transitions. [2021-02-24 00:15:52,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:15:52,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-24 00:15:52,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:15:52,833 INFO L225 Difference]: With dead ends: 115 [2021-02-24 00:15:52,833 INFO L226 Difference]: Without dead ends: 61 [2021-02-24 00:15:52,837 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 00:15:52,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-24 00:15:52,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-02-24 00:15:52,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-24 00:15:52,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2021-02-24 00:15:52,904 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 38 [2021-02-24 00:15:52,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:15:52,905 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2021-02-24 00:15:52,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:15:52,906 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2021-02-24 00:15:52,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 00:15:52,908 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:52,909 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] [2021-02-24 00:15:52,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:15:52,909 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:52,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:52,912 INFO L82 PathProgramCache]: Analyzing trace with hash 549876134, now seen corresponding path program 1 times [2021-02-24 00:15:52,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:52,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828766683] [2021-02-24 00:15:52,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:53,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:53,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:53,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:53,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:15:53,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:53,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:15:53,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:53,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:53,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:15:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:53,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:53,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:53,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:15:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:53,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:53,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:53,132 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 00:15:53,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828766683] [2021-02-24 00:15:53,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:15:53,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 00:15:53,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768419116] [2021-02-24 00:15:53,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:15:53,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:15:53,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:15:53,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:15:53,138 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 5 states. [2021-02-24 00:15:53,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:15:53,559 INFO L93 Difference]: Finished difference Result 113 states and 122 transitions. [2021-02-24 00:15:53,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:15:53,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-24 00:15:53,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:15:53,563 INFO L225 Difference]: With dead ends: 113 [2021-02-24 00:15:53,563 INFO L226 Difference]: Without dead ends: 83 [2021-02-24 00:15:53,565 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 00:15:53,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-02-24 00:15:53,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2021-02-24 00:15:53,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-24 00:15:53,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2021-02-24 00:15:53,585 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 38 [2021-02-24 00:15:53,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:15:53,585 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2021-02-24 00:15:53,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:15:53,586 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2021-02-24 00:15:53,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-24 00:15:53,587 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:53,588 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:15:53,588 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:15:53,588 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:53,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:53,589 INFO L82 PathProgramCache]: Analyzing trace with hash 2050387401, now seen corresponding path program 1 times [2021-02-24 00:15:53,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:53,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700632389] [2021-02-24 00:15:53,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:53,609 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-24 00:15:53,610 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-24 00:15:53,610 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 00:15:53,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:15:53,633 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-24 00:15:53,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:15:53 BoogieIcfgContainer [2021-02-24 00:15:53,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:15:53,635 INFO L168 Benchmark]: Toolchain (without parser) took 2769.45 ms. Allocated memory was 154.1 MB in the beginning and 202.4 MB in the end (delta: 48.2 MB). Free memory was 130.4 MB in the beginning and 150.5 MB in the end (delta: -20.1 MB). Peak memory consumption was 29.3 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:53,636 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 154.1 MB. Free memory is still 127.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:15:53,637 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.87 ms. Allocated memory is still 154.1 MB. Free memory was 129.4 MB in the beginning and 119.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:53,638 INFO L168 Benchmark]: Boogie Preprocessor took 44.47 ms. Allocated memory is still 154.1 MB. Free memory was 119.0 MB in the beginning and 117.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:53,639 INFO L168 Benchmark]: RCFGBuilder took 829.32 ms. Allocated memory is still 154.1 MB. Free memory was 117.3 MB in the beginning and 131.2 MB in the end (delta: -14.0 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:53,640 INFO L168 Benchmark]: TraceAbstraction took 1622.74 ms. Allocated memory was 154.1 MB in the beginning and 202.4 MB in the end (delta: 48.2 MB). Free memory was 130.7 MB in the beginning and 150.5 MB in the end (delta: -19.8 MB). Peak memory consumption was 28.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:53,644 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 154.1 MB. Free memory is still 127.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 253.87 ms. Allocated memory is still 154.1 MB. Free memory was 129.4 MB in the beginning and 119.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.47 ms. Allocated memory is still 154.1 MB. Free memory was 119.0 MB in the beginning and 117.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 829.32 ms. Allocated memory is still 154.1 MB. Free memory was 117.3 MB in the beginning and 131.2 MB in the end (delta: -14.0 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1622.74 ms. Allocated memory was 154.1 MB in the beginning and 202.4 MB in the end (delta: 48.2 MB). Free memory was 130.7 MB in the beginning and 150.5 MB in the end (delta: -19.8 MB). Peak memory consumption was 28.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L30] i=0 [L30] COND TRUE i