/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:44:52,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:44:52,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:44:52,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:44:52,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:44:52,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:44:52,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:44:52,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:44:52,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:44:52,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:44:52,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:44:52,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:44:52,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:44:52,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:44:52,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:44:52,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:44:52,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:44:52,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:44:52,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:44:52,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:44:52,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:44:52,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:44:52,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:44:52,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:44:52,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:44:52,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:44:52,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:44:52,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:44:52,289 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 22:44:52,316 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:44:52,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:44:52,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:44:52,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:44:52,318 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:44:52,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:44:52,319 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:44:52,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:44:52,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:44:52,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:44:52,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:44:52,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:44:52,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:44:52,321 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:44:52,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:44:52,321 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:44:52,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:44:52,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:44:52,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:44:52,322 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:44:52,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:44:52,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:44:52,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:44:52,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:44:52,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:44:52,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:44:52,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:44:52,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:44:52,324 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:44:52,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:44:52,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:44:52,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:44:52,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:44:52,714 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:44:52,715 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:44:52,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-1.c [2020-11-06 22:44:52,807 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80c31e191/3380317a91b641eabb5c6f340951dd7b/FLAGbd7747070 [2020-11-06 22:44:53,412 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:44:53,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/array-1.c [2020-11-06 22:44:53,420 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80c31e191/3380317a91b641eabb5c6f340951dd7b/FLAGbd7747070 [2020-11-06 22:44:53,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80c31e191/3380317a91b641eabb5c6f340951dd7b [2020-11-06 22:44:53,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:44:53,784 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:44:53,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:53,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:44:53,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:44:53,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:53" (1/1) ... [2020-11-06 22:44:53,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a8f6e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:53, skipping insertion in model container [2020-11-06 22:44:53,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:53" (1/1) ... [2020-11-06 22:44:53,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:44:53,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:44:54,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:54,119 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:44:54,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:54,178 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:44:54,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:54 WrapperNode [2020-11-06 22:44:54,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:54,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:44:54,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:44:54,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:44:54,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:54" (1/1) ... [2020-11-06 22:44:54,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:54" (1/1) ... [2020-11-06 22:44:54,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:54" (1/1) ... [2020-11-06 22:44:54,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:54" (1/1) ... [2020-11-06 22:44:54,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:54" (1/1) ... [2020-11-06 22:44:54,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:54" (1/1) ... [2020-11-06 22:44:54,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:54" (1/1) ... [2020-11-06 22:44:54,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:44:54,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:44:54,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:44:54,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:44:54,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:54" (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 [2020-11-06 22:44:54,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:44:54,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:44:54,339 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:44:54,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:44:54,339 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:44:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:44:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:44:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:44:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:44:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:44:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:44:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:44:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:44:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:44:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:44:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:44:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:44:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:44:54,696 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:44:54,696 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-06 22:44:54,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:54 BoogieIcfgContainer [2020-11-06 22:44:54,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:44:54,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:44:54,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:44:54,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:44:54,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:53" (1/3) ... [2020-11-06 22:44:54,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2adae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:54, skipping insertion in model container [2020-11-06 22:44:54,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:54" (2/3) ... [2020-11-06 22:44:54,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2adae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:54, skipping insertion in model container [2020-11-06 22:44:54,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:54" (3/3) ... [2020-11-06 22:44:54,708 INFO L111 eAbstractionObserver]: Analyzing ICFG array-1.c [2020-11-06 22:44:54,755 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:44:54,759 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:44:54,776 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:44:54,810 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:44:54,810 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:44:54,810 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:44:54,810 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:44:54,810 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:44:54,811 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:44:54,811 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:44:54,811 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:44:54,832 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-11-06 22:44:54,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-06 22:44:54,839 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:54,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:44:54,840 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:54,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:54,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1934270437, now seen corresponding path program 1 times [2020-11-06 22:44:54,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:54,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66154785] [2020-11-06 22:44:54,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:55,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:55,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:55,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66154785] [2020-11-06 22:44:55,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:55,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:44:55,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394890883] [2020-11-06 22:44:55,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:44:55,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:55,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:44:55,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:44:55,390 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-11-06 22:44:55,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:55,504 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2020-11-06 22:44:55,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:44:55,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-06 22:44:55,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:55,515 INFO L225 Difference]: With dead ends: 40 [2020-11-06 22:44:55,516 INFO L226 Difference]: Without dead ends: 16 [2020-11-06 22:44:55,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:44:55,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-06 22:44:55,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-06 22:44:55,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-06 22:44:55,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-06 22:44:55,573 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2020-11-06 22:44:55,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:55,574 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-06 22:44:55,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:44:55,574 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-06 22:44:55,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-06 22:44:55,575 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:55,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:44:55,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:44:55,577 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:55,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:55,578 INFO L82 PathProgramCache]: Analyzing trace with hash 761664538, now seen corresponding path program 1 times [2020-11-06 22:44:55,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:55,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277575493] [2020-11-06 22:44:55,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:55,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:55,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:55,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277575493] [2020-11-06 22:44:55,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:55,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:44:55,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611855131] [2020-11-06 22:44:55,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:44:55,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:55,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:44:55,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:44:55,790 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 4 states. [2020-11-06 22:44:55,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:55,851 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-11-06 22:44:55,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:44:55,852 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-06 22:44:55,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:55,853 INFO L225 Difference]: With dead ends: 26 [2020-11-06 22:44:55,854 INFO L226 Difference]: Without dead ends: 19 [2020-11-06 22:44:55,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:44:55,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-06 22:44:55,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-11-06 22:44:55,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-06 22:44:55,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-11-06 22:44:55,862 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2020-11-06 22:44:55,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:55,863 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-11-06 22:44:55,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:44:55,863 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-11-06 22:44:55,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-06 22:44:55,864 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:55,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:44:55,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:44:55,865 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:55,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:55,865 INFO L82 PathProgramCache]: Analyzing trace with hash 726671833, now seen corresponding path program 1 times [2020-11-06 22:44:55,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:55,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476886993] [2020-11-06 22:44:55,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:56,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:56,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:56,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476886993] [2020-11-06 22:44:56,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001997774] [2020-11-06 22:44:56,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:44:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:56,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-06 22:44:56,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:44:56,365 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:44:56,391 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-06 22:44:56,633 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-06 22:44:56,857 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-11-06 22:44:56,858 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:44:57,021 WARN L194 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 31 [2020-11-06 22:44:57,023 INFO L625 ElimStorePlain]: treesize reduction 298, result has 18.4 percent of original size [2020-11-06 22:44:57,024 INFO L515 ElimStorePlain]: Eliminatee v_prenex_7 vanished before elimination [2020-11-06 22:44:57,025 INFO L515 ElimStorePlain]: Eliminatee v_prenex_2 vanished before elimination [2020-11-06 22:44:57,025 INFO L515 ElimStorePlain]: Eliminatee v_prenex_12 vanished before elimination [2020-11-06 22:44:57,041 INFO L547 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 4 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-11-06 22:44:57,041 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 20 variables, input treesize:369, output treesize:54 [2020-11-06 22:44:57,360 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:44:57,360 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2020-11-06 22:44:57,363 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:44:57,367 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:44:57,369 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-11-06 22:44:57,412 INFO L625 ElimStorePlain]: treesize reduction 11, result has 80.0 percent of original size [2020-11-06 22:44:57,418 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:44:57,418 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:61, output treesize:3 [2020-11-06 22:44:57,435 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:44:57,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:57,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:44:57,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2020-11-06 22:44:57,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222338980] [2020-11-06 22:44:57,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-06 22:44:57,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:57,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-06 22:44:57,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-11-06 22:44:57,503 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 14 states. [2020-11-06 22:44:57,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:57,934 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-11-06 22:44:57,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:44:57,934 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2020-11-06 22:44:57,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:57,935 INFO L225 Difference]: With dead ends: 26 [2020-11-06 22:44:57,935 INFO L226 Difference]: Without dead ends: 19 [2020-11-06 22:44:57,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2020-11-06 22:44:57,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-06 22:44:57,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-11-06 22:44:57,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-06 22:44:57,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-11-06 22:44:57,942 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2020-11-06 22:44:57,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:57,942 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-11-06 22:44:57,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-06 22:44:57,942 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-11-06 22:44:57,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-06 22:44:57,943 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:57,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:44:58,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-06 22:44:58,157 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:58,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:58,158 INFO L82 PathProgramCache]: Analyzing trace with hash 46613463, now seen corresponding path program 1 times [2020-11-06 22:44:58,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:58,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161616856] [2020-11-06 22:44:58,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:58,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:58,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161616856] [2020-11-06 22:44:58,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069980976] [2020-11-06 22:44:58,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:44:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:58,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-06 22:44:58,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:44:58,546 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-06 22:44:58,547 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:44:58,563 INFO L625 ElimStorePlain]: treesize reduction 5, result has 82.1 percent of original size [2020-11-06 22:44:58,567 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-11-06 22:44:58,568 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-06 22:44:58,575 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:44:58,577 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:44:58,577 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:59, output treesize:5 [2020-11-06 22:44:58,600 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:44:58,663 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-11-06 22:44:58,664 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:44:58,667 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:44:58,667 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:44:58,667 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-11-06 22:44:58,670 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:44:58,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:58,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:44:58,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 13 [2020-11-06 22:44:58,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662102475] [2020-11-06 22:44:58,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-06 22:44:58,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:58,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-06 22:44:58,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-11-06 22:44:58,713 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 13 states. [2020-11-06 22:44:59,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:59,093 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-11-06 22:44:59,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 22:44:59,093 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-11-06 22:44:59,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:59,094 INFO L225 Difference]: With dead ends: 19 [2020-11-06 22:44:59,094 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:44:59,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-11-06 22:44:59,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:44:59,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:44:59,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:44:59,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:44:59,096 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-11-06 22:44:59,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:59,096 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:44:59,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-06 22:44:59,097 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:44:59,097 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:44:59,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:44:59,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:44:59,489 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-11-06 22:44:59,490 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-06 22:44:59,490 INFO L266 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-11-06 22:44:59,490 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-06 22:44:59,490 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:44:59,491 INFO L262 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|)) [2020-11-06 22:44:59,491 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:44:59,491 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:44:59,491 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-06 22:44:59,491 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:44:59,491 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:44:59,491 INFO L262 CegarLoopResult]: At program point mainENTRY(lines 13 31) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-11-06 22:44:59,492 INFO L262 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (and (<= main_~menor~0 |main_#t~mem12|) (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|)) (= |main_~#array~0.offset| 0) (= main_~SIZE~0 1)) [2020-11-06 22:44:59,492 INFO L266 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-11-06 22:44:59,492 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 13 31) no Hoare annotation was computed. [2020-11-06 22:44:59,492 INFO L266 CegarLoopResult]: For program point L24(lines 24 25) no Hoare annotation was computed. [2020-11-06 22:44:59,492 INFO L266 CegarLoopResult]: For program point L21-2(lines 21 26) no Hoare annotation was computed. [2020-11-06 22:44:59,493 INFO L262 CegarLoopResult]: At program point L21-3(lines 21 26) the Hoare annotation is: (let ((.cse0 (= |main_~#array~0.offset| 0)) (.cse1 (= main_~SIZE~0 1))) (or (and (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|)) .cse0 .cse1) (and (= main_~j~0 0) .cse0 .cse1))) [2020-11-06 22:44:59,493 INFO L266 CegarLoopResult]: For program point L21-4(lines 21 26) no Hoare annotation was computed. [2020-11-06 22:44:59,493 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 13 31) no Hoare annotation was computed. [2020-11-06 22:44:59,496 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-11-06 22:44:59,496 INFO L266 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2020-11-06 22:44:59,496 INFO L262 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-11-06 22:44:59,496 INFO L266 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-11-06 22:44:59,496 INFO L266 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-11-06 22:44:59,497 INFO L266 CegarLoopResult]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2020-11-06 22:44:59,509 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-06 22:44:59,518 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-06 22:44:59,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:44:59 BoogieIcfgContainer [2020-11-06 22:44:59,522 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:44:59,524 INFO L168 Benchmark]: Toolchain (without parser) took 5744.75 ms. Allocated memory was 156.2 MB in the beginning and 201.3 MB in the end (delta: 45.1 MB). Free memory was 131.2 MB in the beginning and 139.1 MB in the end (delta: -7.9 MB). Peak memory consumption was 37.9 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:59,526 INFO L168 Benchmark]: CDTParser took 1.38 ms. Allocated memory is still 156.2 MB. Free memory is still 129.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:44:59,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.75 ms. Allocated memory is still 156.2 MB. Free memory was 130.6 MB in the beginning and 120.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:59,532 INFO L168 Benchmark]: Boogie Preprocessor took 71.90 ms. Allocated memory is still 156.2 MB. Free memory was 120.6 MB in the beginning and 119.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:44:59,533 INFO L168 Benchmark]: RCFGBuilder took 442.47 ms. Allocated memory is still 156.2 MB. Free memory was 119.0 MB in the beginning and 105.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:59,534 INFO L168 Benchmark]: TraceAbstraction took 4821.53 ms. Allocated memory was 156.2 MB in the beginning and 201.3 MB in the end (delta: 45.1 MB). Free memory was 105.0 MB in the beginning and 139.1 MB in the end (delta: -34.1 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:59,544 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.38 ms. Allocated memory is still 156.2 MB. Free memory is still 129.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 392.75 ms. Allocated memory is still 156.2 MB. Free memory was 130.6 MB in the beginning and 120.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 71.90 ms. Allocated memory is still 156.2 MB. Free memory was 120.6 MB in the beginning and 119.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 442.47 ms. Allocated memory is still 156.2 MB. Free memory was 119.0 MB in the beginning and 105.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4821.53 ms. Allocated memory was 156.2 MB in the beginning and 201.3 MB in the end (delta: 45.1 MB). Free memory was 105.0 MB in the beginning and 139.1 MB in the end (delta: -34.1 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * 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: 21]: Loop Invariant [2020-11-06 22:44:59,556 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-06 22:44:59,562 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((menor <= unknown-#memory_int-unknown[array][array] && array == 0) && SIZE == 1) || ((j == 0 && array == 0) && SIZE == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 51 SDslu, 121 SDs, 0 SdLazy, 217 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 18 PreInvPairs, 22 NumberOfFragments, 88 HoareAnnotationTreeSize, 18 FomulaSimplifications, 59 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 108 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 84 ConstructedInterpolants, 4 QuantifiedInterpolants, 8580 SizeOfPredicates, 14 NumberOfNonLiveVariables, 236 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/4 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...