/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/bitvector/jain_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 00:35:01,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 00:35:01,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 00:35:01,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 00:35:01,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 00:35:01,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 00:35:01,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 00:35:01,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 00:35:01,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 00:35:01,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 00:35:01,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 00:35:01,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 00:35:01,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 00:35:01,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 00:35:01,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 00:35:01,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 00:35:01,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 00:35:01,361 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 00:35:01,381 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 00:35:01,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 00:35:01,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 00:35:01,385 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 00:35:01,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 00:35:01,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 00:35:01,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 00:35:01,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 00:35:01,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 00:35:01,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 00:35:01,387 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 00:35:01,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 00:35:01,388 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 00:35:01,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 00:35:01,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 00:35:01,388 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 00:35:01,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 00:35:01,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 00:35:01,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 00:35:01,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 00:35:01,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 00:35:01,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 00:35:01,390 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 00:35:01,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 00:35:01,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 00:35:01,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 00:35:01,851 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 00:35:01,852 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 00:35:01,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_2-1.c [2020-10-24 00:35:01,948 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b1a79897/173d505fe50642e199b54768f3f3ea92/FLAG82cf7d11b [2020-10-24 00:35:02,524 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 00:35:02,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/jain_2-1.c [2020-10-24 00:35:02,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b1a79897/173d505fe50642e199b54768f3f3ea92/FLAG82cf7d11b [2020-10-24 00:35:02,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b1a79897/173d505fe50642e199b54768f3f3ea92 [2020-10-24 00:35:02,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 00:35:02,904 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 00:35:02,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 00:35:02,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 00:35:02,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 00:35:02,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:35:02" (1/1) ... [2020-10-24 00:35:02,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f21930b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:35:02, skipping insertion in model container [2020-10-24 00:35:02,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:35:02" (1/1) ... [2020-10-24 00:35:02,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 00:35:02,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 00:35:03,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:35:03,203 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 00:35:03,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:35:03,236 INFO L208 MainTranslator]: Completed translation [2020-10-24 00:35:03,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:35:03 WrapperNode [2020-10-24 00:35:03,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 00:35:03,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 00:35:03,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 00:35:03,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 00:35:03,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:35:03" (1/1) ... [2020-10-24 00:35:03,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:35:03" (1/1) ... [2020-10-24 00:35:03,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:35:03" (1/1) ... [2020-10-24 00:35:03,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:35:03" (1/1) ... [2020-10-24 00:35:03,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:35:03" (1/1) ... [2020-10-24 00:35:03,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:35:03" (1/1) ... [2020-10-24 00:35:03,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:35:03" (1/1) ... [2020-10-24 00:35:03,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 00:35:03,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 00:35:03,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 00:35:03,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 00:35:03,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:35:03" (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 00:35:03,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 00:35:03,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 00:35:03,340 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 00:35:03,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-24 00:35:03,341 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 00:35:03,341 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 00:35:03,341 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 00:35:03,341 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 00:35:03,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 00:35:03,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-24 00:35:03,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-24 00:35:03,342 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 00:35:03,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 00:35:03,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 00:35:03,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 00:35:03,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 00:35:03,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 00:35:03,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 00:35:03,655 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 00:35:03,658 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-24 00:35:03,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:35:03 BoogieIcfgContainer [2020-10-24 00:35:03,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 00:35:03,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 00:35:03,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 00:35:03,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 00:35:03,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:35:02" (1/3) ... [2020-10-24 00:35:03,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a05fe99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:35:03, skipping insertion in model container [2020-10-24 00:35:03,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:35:03" (2/3) ... [2020-10-24 00:35:03,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a05fe99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:35:03, skipping insertion in model container [2020-10-24 00:35:03,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:35:03" (3/3) ... [2020-10-24 00:35:03,684 INFO L111 eAbstractionObserver]: Analyzing ICFG jain_2-1.c [2020-10-24 00:35:03,711 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 00:35:03,726 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 00:35:03,741 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 00:35:03,780 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 00:35:03,782 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 00:35:03,782 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 00:35:03,783 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 00:35:03,783 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 00:35:03,783 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 00:35:03,783 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 00:35:03,783 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 00:35:03,804 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-24 00:35:03,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-24 00:35:03,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:35:03,818 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] [2020-10-24 00:35:03,819 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:35:03,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:35:03,830 INFO L82 PathProgramCache]: Analyzing trace with hash 31597307, now seen corresponding path program 1 times [2020-10-24 00:35:03,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:35:03,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684130952] [2020-10-24 00:35:03,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:35:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:35:04,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:35:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:35:04,433 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 00:35:04,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684130952] [2020-10-24 00:35:04,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:35:04,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-24 00:35:04,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151039143] [2020-10-24 00:35:04,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 00:35:04,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:35:04,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 00:35:04,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-24 00:35:04,460 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 9 states. [2020-10-24 00:35:04,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:35:04,958 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2020-10-24 00:35:04,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 00:35:04,960 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-24 00:35:04,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:35:04,968 INFO L225 Difference]: With dead ends: 62 [2020-10-24 00:35:04,968 INFO L226 Difference]: Without dead ends: 41 [2020-10-24 00:35:04,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-24 00:35:04,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-24 00:35:05,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-24 00:35:05,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-24 00:35:05,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2020-10-24 00:35:05,022 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 26 [2020-10-24 00:35:05,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:35:05,023 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2020-10-24 00:35:05,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 00:35:05,023 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2020-10-24 00:35:05,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-24 00:35:05,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:35:05,025 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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 00:35:05,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 00:35:05,026 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:35:05,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:35:05,027 INFO L82 PathProgramCache]: Analyzing trace with hash -928867771, now seen corresponding path program 1 times [2020-10-24 00:35:05,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:35:05,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270821649] [2020-10-24 00:35:05,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:35:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:35:05,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:35:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:35:05,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-24 00:35:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:35:05,301 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:35:05,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270821649] [2020-10-24 00:35:05,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:35:05,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 00:35:05,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643415821] [2020-10-24 00:35:05,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 00:35:05,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:35:05,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 00:35:05,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-24 00:35:05,305 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 10 states. [2020-10-24 00:35:05,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:35:05,636 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-10-24 00:35:05,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-24 00:35:05,637 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-24 00:35:05,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:35:05,638 INFO L225 Difference]: With dead ends: 39 [2020-10-24 00:35:05,639 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 00:35:05,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-24 00:35:05,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 00:35:05,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 00:35:05,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 00:35:05,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 00:35:05,641 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-10-24 00:35:05,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:35:05,642 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 00:35:05,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 00:35:05,642 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 00:35:05,642 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 00:35:05,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 00:35:05,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 00:35:06,061 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-10-24 00:35:06,062 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-24 00:35:06,062 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-10-24 00:35:06,062 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-10-24 00:35:06,062 INFO L277 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-10-24 00:35:06,062 INFO L277 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-10-24 00:35:06,063 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 00:35:06,063 INFO L277 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-10-24 00:35:06,063 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-24 00:35:06,063 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-10-24 00:35:06,063 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-24 00:35:06,064 INFO L277 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-10-24 00:35:06,064 INFO L277 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-10-24 00:35:06,064 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-24 00:35:06,064 INFO L270 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: false [2020-10-24 00:35:06,064 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 00:35:06,064 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-24 00:35:06,065 INFO L270 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: false [2020-10-24 00:35:06,065 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 12 28) the Hoare annotation is: true [2020-10-24 00:35:06,065 INFO L270 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~y~0 2))) (<= .cse0 (* 2 (div .cse0 2)))) [2020-10-24 00:35:06,065 INFO L270 CegarLoopResult]: At program point mainEXIT(lines 12 28) the Hoare annotation is: false [2020-10-24 00:35:06,065 INFO L270 CegarLoopResult]: At program point L25-1(lines 19 26) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~y~0 2))) (<= .cse0 (* 2 (div .cse0 2)))) [2020-10-24 00:35:06,066 INFO L270 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~y~0 2))) (<= .cse0 (* 2 (div .cse0 2)))) [2020-10-24 00:35:06,066 INFO L270 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~y~0 2))) (<= .cse0 (* 2 (div .cse0 2)))) [2020-10-24 00:35:06,066 INFO L270 CegarLoopResult]: At program point L22-1(line 22) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~y~0 2))) (<= .cse0 (* 2 (div .cse0 2)))) [2020-10-24 00:35:06,066 INFO L270 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~y~0 2))) (<= .cse0 (* 2 (div .cse0 2)))) [2020-10-24 00:35:06,066 INFO L270 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (= main_~x~0 1) [2020-10-24 00:35:06,067 INFO L270 CegarLoopResult]: At program point L19-2(lines 19 26) the Hoare annotation is: false [2020-10-24 00:35:06,067 INFO L277 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-10-24 00:35:06,067 INFO L277 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-10-24 00:35:06,067 INFO L270 CegarLoopResult]: At program point mainFINAL(lines 12 28) the Hoare annotation is: false [2020-10-24 00:35:06,067 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-24 00:35:06,068 INFO L270 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 00:35:06,068 INFO L270 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-24 00:35:06,068 INFO L270 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 00:35:06,068 INFO L270 CegarLoopResult]: At program point L8-1(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-24 00:35:06,068 INFO L270 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 00:35:06,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:35:06 BoogieIcfgContainer [2020-10-24 00:35:06,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 00:35:06,090 INFO L168 Benchmark]: Toolchain (without parser) took 3189.85 ms. Allocated memory was 154.1 MB in the beginning and 198.2 MB in the end (delta: 44.0 MB). Free memory was 130.3 MB in the beginning and 90.4 MB in the end (delta: 39.8 MB). Peak memory consumption was 84.1 MB. Max. memory is 8.0 GB. [2020-10-24 00:35:06,091 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 154.1 MB. Free memory was 127.8 MB in the beginning and 127.7 MB in the end (delta: 91.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 00:35:06,092 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.65 ms. Allocated memory is still 154.1 MB. Free memory was 129.7 MB in the beginning and 120.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-24 00:35:06,093 INFO L168 Benchmark]: Boogie Preprocessor took 32.31 ms. Allocated memory is still 154.1 MB. Free memory was 120.5 MB in the beginning and 119.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-24 00:35:06,094 INFO L168 Benchmark]: RCFGBuilder took 389.57 ms. Allocated memory is still 154.1 MB. Free memory was 119.2 MB in the beginning and 137.2 MB in the end (delta: -18.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. [2020-10-24 00:35:06,096 INFO L168 Benchmark]: TraceAbstraction took 2421.23 ms. Allocated memory was 154.1 MB in the beginning and 198.2 MB in the end (delta: 44.0 MB). Free memory was 136.7 MB in the beginning and 90.4 MB in the end (delta: 46.2 MB). Peak memory consumption was 90.3 MB. Max. memory is 8.0 GB. [2020-10-24 00:35:06,100 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 154.1 MB. Free memory was 127.8 MB in the beginning and 127.7 MB in the end (delta: 91.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 326.65 ms. Allocated memory is still 154.1 MB. Free memory was 129.7 MB in the beginning and 120.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.31 ms. Allocated memory is still 154.1 MB. Free memory was 120.5 MB in the beginning and 119.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 389.57 ms. Allocated memory is still 154.1 MB. Free memory was 119.2 MB in the beginning and 137.2 MB in the end (delta: -18.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2421.23 ms. Allocated memory was 154.1 MB in the beginning and 198.2 MB in the end (delta: 44.0 MB). Free memory was 136.7 MB in the beginning and 90.4 MB in the end (delta: 46.2 MB). Peak memory consumption was 90.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: x + y + 2 <= 2 * ((x + y + 2) / 2) - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 12]: Procedure Contract for main Derived contract for procedure main: 0 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 55 SDslu, 165 SDs, 0 SdLazy, 167 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 37 LocationsWithAnnotation, 53 PreInvPairs, 69 NumberOfFragments, 166 HoareAnnotationTreeSize, 53 FomulaSimplifications, 316 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 37 FomulaSimplificationsInter, 618 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 11930 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 2/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...