/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:27:31,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:27:31,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:27:31,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:27:31,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:27:31,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:27:31,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:27:31,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:27:31,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:27:31,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:27:31,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:27:31,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:27:31,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:27:31,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:27:31,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:27:31,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:27:31,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:27:31,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:27:31,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:27:31,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:27:31,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:27:31,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:27:31,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:27:31,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:27:31,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:27:31,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:27:31,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:27:31,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:27:31,759 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:27:31,770 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:27:31,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:27:31,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:27:31,773 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:27:31,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:27:31,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:27:31,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:27:31,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:27:31,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:27:31,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:27:31,774 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:27:31,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:27:31,775 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:27:31,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:27:31,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:27:31,776 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:27:31,776 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:27:31,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:27:31,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:27:31,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:27:31,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:27:31,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:27:31,777 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:27:32,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:27:32,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:27:32,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:27:32,155 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:27:32,156 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:27:32,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c [2020-10-23 20:27:32,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/548322dcc/4e9d88e79f4c4d4aa461be8838e8f88b/FLAGb7bdc1b70 [2020-10-23 20:27:32,807 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:27:32,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c [2020-10-23 20:27:32,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/548322dcc/4e9d88e79f4c4d4aa461be8838e8f88b/FLAGb7bdc1b70 [2020-10-23 20:27:33,194 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/548322dcc/4e9d88e79f4c4d4aa461be8838e8f88b [2020-10-23 20:27:33,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:27:33,204 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:27:33,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:27:33,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:27:33,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:27:33,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:27:33" (1/1) ... [2020-10-23 20:27:33,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@df4c57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:33, skipping insertion in model container [2020-10-23 20:27:33,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:27:33" (1/1) ... [2020-10-23 20:27:33,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:27:33,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:27:33,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:27:33,397 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:27:33,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:27:33,428 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:27:33,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:33 WrapperNode [2020-10-23 20:27:33,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:27:33,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:27:33,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:27:33,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:27:33,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:33" (1/1) ... [2020-10-23 20:27:33,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:33" (1/1) ... [2020-10-23 20:27:33,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:33" (1/1) ... [2020-10-23 20:27:33,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:33" (1/1) ... [2020-10-23 20:27:33,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:33" (1/1) ... [2020-10-23 20:27:33,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:33" (1/1) ... [2020-10-23 20:27:33,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:33" (1/1) ... [2020-10-23 20:27:33,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:27:33,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:27:33,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:27:33,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:27:33,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:33" (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 [2020-10-23 20:27:33,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:27:33,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:27:33,539 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:27:33,539 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-10-23 20:27:33,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:27:33,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:27:33,539 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:27:33,539 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:27:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:27:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:27:33,541 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-10-23 20:27:33,541 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:27:33,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:27:33,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:27:33,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:27:33,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:27:33,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:27:33,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:27:33,979 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:27:33,980 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 20:27:33,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:27:33 BoogieIcfgContainer [2020-10-23 20:27:33,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:27:33,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:27:33,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:27:33,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:27:33,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:27:33" (1/3) ... [2020-10-23 20:27:33,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c58c72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:27:33, skipping insertion in model container [2020-10-23 20:27:33,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:33" (2/3) ... [2020-10-23 20:27:33,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c58c72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:27:33, skipping insertion in model container [2020-10-23 20:27:33,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:27:33" (3/3) ... [2020-10-23 20:27:33,997 INFO L111 eAbstractionObserver]: Analyzing ICFG id_i5_o5-2.c [2020-10-23 20:27:34,010 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:27:34,018 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:27:34,031 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:27:34,054 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:27:34,054 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:27:34,054 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:27:34,054 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:27:34,054 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:27:34,055 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:27:34,055 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:27:34,055 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:27:34,082 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-23 20:27:34,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-23 20:27:34,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:27:34,092 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] [2020-10-23 20:27:34,093 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:27:34,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:27:34,099 INFO L82 PathProgramCache]: Analyzing trace with hash -742560695, now seen corresponding path program 1 times [2020-10-23 20:27:34,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:27:34,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564397146] [2020-10-23 20:27:34,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:27:34,178 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:27:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:34,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:27:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:34,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 20:27:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:27:34,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564397146] [2020-10-23 20:27:34,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:27:34,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:27:34,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72133376] [2020-10-23 20:27:34,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:27:34,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:27:34,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:27:34,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:27:34,487 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 6 states. [2020-10-23 20:27:34,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:27:34,744 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-10-23 20:27:34,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 20:27:34,746 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-23 20:27:34,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:27:34,756 INFO L225 Difference]: With dead ends: 50 [2020-10-23 20:27:34,757 INFO L226 Difference]: Without dead ends: 32 [2020-10-23 20:27:34,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-23 20:27:34,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-23 20:27:34,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-23 20:27:34,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-23 20:27:34,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-10-23 20:27:34,816 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 25 [2020-10-23 20:27:34,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:27:34,817 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-10-23 20:27:34,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:27:34,817 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-10-23 20:27:34,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-23 20:27:34,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:27:34,821 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:27:34,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:27:34,822 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:27:34,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:27:34,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1024612499, now seen corresponding path program 1 times [2020-10-23 20:27:34,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:27:34,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969344429] [2020-10-23 20:27:34,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:27:34,837 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:27:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:34,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:27:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:34,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 20:27:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-23 20:27:35,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969344429] [2020-10-23 20:27:35,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:27:35,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:27:35,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100485896] [2020-10-23 20:27:35,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:27:35,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:27:35,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:27:35,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:27:35,049 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 7 states. [2020-10-23 20:27:35,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:27:35,304 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-10-23 20:27:35,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:27:35,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-10-23 20:27:35,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:27:35,307 INFO L225 Difference]: With dead ends: 44 [2020-10-23 20:27:35,307 INFO L226 Difference]: Without dead ends: 37 [2020-10-23 20:27:35,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:27:35,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-23 20:27:35,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-23 20:27:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-23 20:27:35,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-10-23 20:27:35,323 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 33 [2020-10-23 20:27:35,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:27:35,324 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-10-23 20:27:35,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:27:35,324 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-10-23 20:27:35,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-23 20:27:35,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:27:35,326 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1] [2020-10-23 20:27:35,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:27:35,326 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:27:35,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:27:35,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1157111945, now seen corresponding path program 2 times [2020-10-23 20:27:35,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:27:35,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939478243] [2020-10-23 20:27:35,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:27:35,330 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:27:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:27:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 20:27:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,494 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-23 20:27:35,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939478243] [2020-10-23 20:27:35,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:27:35,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 20:27:35,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301975580] [2020-10-23 20:27:35,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 20:27:35,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:27:35,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 20:27:35,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:27:35,500 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 8 states. [2020-10-23 20:27:35,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:27:35,798 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-10-23 20:27:35,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 20:27:35,798 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-10-23 20:27:35,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:27:35,800 INFO L225 Difference]: With dead ends: 49 [2020-10-23 20:27:35,800 INFO L226 Difference]: Without dead ends: 42 [2020-10-23 20:27:35,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-23 20:27:35,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-23 20:27:35,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-23 20:27:35,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-23 20:27:35,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-10-23 20:27:35,814 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 41 [2020-10-23 20:27:35,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:27:35,815 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-10-23 20:27:35,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 20:27:35,815 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-10-23 20:27:35,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-23 20:27:35,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:27:35,817 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:27:35,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:27:35,818 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:27:35,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:27:35,818 INFO L82 PathProgramCache]: Analyzing trace with hash 2083092563, now seen corresponding path program 3 times [2020-10-23 20:27:35,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:27:35,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775784485] [2020-10-23 20:27:35,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:27:35,822 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:27:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:27:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 20:27:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,989 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-23 20:27:35,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775784485] [2020-10-23 20:27:35,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:27:35,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 20:27:35,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711682200] [2020-10-23 20:27:35,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 20:27:35,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:27:35,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 20:27:35,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-23 20:27:35,993 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 9 states. [2020-10-23 20:27:36,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:27:36,301 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-10-23 20:27:36,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 20:27:36,301 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-10-23 20:27:36,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:27:36,303 INFO L225 Difference]: With dead ends: 54 [2020-10-23 20:27:36,303 INFO L226 Difference]: Without dead ends: 47 [2020-10-23 20:27:36,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:27:36,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-23 20:27:36,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-23 20:27:36,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-23 20:27:36,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-10-23 20:27:36,318 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 49 [2020-10-23 20:27:36,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:27:36,318 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-10-23 20:27:36,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 20:27:36,318 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-10-23 20:27:36,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-23 20:27:36,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:27:36,321 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:27:36,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:27:36,321 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:27:36,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:27:36,322 INFO L82 PathProgramCache]: Analyzing trace with hash 2025718985, now seen corresponding path program 4 times [2020-10-23 20:27:36,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:27:36,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985950105] [2020-10-23 20:27:36,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:27:36,327 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:27:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:36,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:27:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:36,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 20:27:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:36,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:36,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:36,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:36,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:36,591 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-23 20:27:36,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985950105] [2020-10-23 20:27:36,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:27:36,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:27:36,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239308854] [2020-10-23 20:27:36,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:27:36,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:27:36,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:27:36,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:27:36,595 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 10 states. [2020-10-23 20:27:37,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:27:37,006 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-10-23 20:27:37,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 20:27:37,008 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-23 20:27:37,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:27:37,012 INFO L225 Difference]: With dead ends: 59 [2020-10-23 20:27:37,012 INFO L226 Difference]: Without dead ends: 52 [2020-10-23 20:27:37,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:27:37,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-23 20:27:37,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-23 20:27:37,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-23 20:27:37,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2020-10-23 20:27:37,026 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 57 [2020-10-23 20:27:37,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:27:37,027 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2020-10-23 20:27:37,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:27:37,027 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2020-10-23 20:27:37,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-23 20:27:37,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:27:37,029 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:27:37,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:27:37,029 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:27:37,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:27:37,030 INFO L82 PathProgramCache]: Analyzing trace with hash 2086365203, now seen corresponding path program 5 times [2020-10-23 20:27:37,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:27:37,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845467562] [2020-10-23 20:27:37,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:27:37,036 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:27:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:37,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:27:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:37,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 20:27:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:37,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:37,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:37,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:37,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:37,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:37,437 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-23 20:27:37,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845467562] [2020-10-23 20:27:37,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:27:37,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-23 20:27:37,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90438125] [2020-10-23 20:27:37,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-23 20:27:37,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:27:37,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-23 20:27:37,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-23 20:27:37,440 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 16 states. [2020-10-23 20:27:38,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:27:38,873 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-10-23 20:27:38,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-23 20:27:38,874 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 65 [2020-10-23 20:27:38,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:27:38,876 INFO L225 Difference]: With dead ends: 64 [2020-10-23 20:27:38,876 INFO L226 Difference]: Without dead ends: 57 [2020-10-23 20:27:38,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2020-10-23 20:27:38,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-23 20:27:38,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-23 20:27:38,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-23 20:27:38,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2020-10-23 20:27:38,912 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 65 [2020-10-23 20:27:38,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:27:38,912 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2020-10-23 20:27:38,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-23 20:27:38,913 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2020-10-23 20:27:38,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-23 20:27:38,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:27:38,916 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:27:38,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:27:38,917 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:27:38,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:27:38,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1881990903, now seen corresponding path program 6 times [2020-10-23 20:27:38,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:27:38,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831931596] [2020-10-23 20:27:38,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:27:38,925 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:27:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:39,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:27:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:39,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 20:27:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:39,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:39,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:39,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:39,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:39,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:39,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:39,247 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-23 20:27:39,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831931596] [2020-10-23 20:27:39,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:27:39,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-23 20:27:39,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770629903] [2020-10-23 20:27:39,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 20:27:39,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:27:39,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 20:27:39,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-23 20:27:39,249 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 12 states. [2020-10-23 20:27:39,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:27:39,796 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2020-10-23 20:27:39,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:27:39,799 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-10-23 20:27:39,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:27:39,800 INFO L225 Difference]: With dead ends: 57 [2020-10-23 20:27:39,800 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 20:27:39,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:27:39,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 20:27:39,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 20:27:39,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 20:27:39,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 20:27:39,802 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 73 [2020-10-23 20:27:39,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:27:39,803 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 20:27:39,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 20:27:39,803 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 20:27:39,803 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 20:27:39,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:27:39,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 20:27:40,496 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 41 [2020-10-23 20:27:40,889 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 41 [2020-10-23 20:27:41,243 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2020-10-23 20:27:41,483 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2020-10-23 20:27:41,938 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2020-10-23 20:27:41,944 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 4) the Hoare annotation is: true [2020-10-23 20:27:41,944 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-23 20:27:41,944 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 4) the Hoare annotation is: true [2020-10-23 20:27:41,944 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) the Hoare annotation is: true [2020-10-23 20:27:41,944 INFO L277 CegarLoopResult]: At program point L4-3(line 4) the Hoare annotation is: true [2020-10-23 20:27:41,944 INFO L277 CegarLoopResult]: At program point L4-4(line 4) the Hoare annotation is: true [2020-10-23 20:27:41,944 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 20:27:41,945 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-23 20:27:41,945 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 4) the Hoare annotation is: true [2020-10-23 20:27:41,945 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|)) [2020-10-23 20:27:41,945 INFO L277 CegarLoopResult]: At program point L4(line 4) the Hoare annotation is: true [2020-10-23 20:27:41,945 INFO L277 CegarLoopResult]: At program point L4-1(line 4) the Hoare annotation is: true [2020-10-23 20:27:41,946 INFO L277 CegarLoopResult]: At program point L4-2(line 4) the Hoare annotation is: true [2020-10-23 20:27:41,946 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-23 20:27:41,946 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-23 20:27:41,946 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 20:27:41,946 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 20:27:41,946 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-23 20:27:41,947 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2020-10-23 20:27:41,947 INFO L270 CegarLoopResult]: At program point mainEXIT(lines 11 17) the Hoare annotation is: (<= 5 main_~input~0) [2020-10-23 20:27:41,947 INFO L270 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: false [2020-10-23 20:27:41,947 INFO L270 CegarLoopResult]: At program point L14(lines 14 16) the Hoare annotation is: (and (<= 5 main_~input~0) (<= 5 main_~result~0) (<= main_~result~0 5)) [2020-10-23 20:27:41,947 INFO L270 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: false [2020-10-23 20:27:41,948 INFO L270 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (<= main_~input~0 5) (<= 5 main_~input~0)) [2020-10-23 20:27:41,948 INFO L270 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: (and (<= |main_#t~ret8| 5) (<= 5 |main_#t~ret8|) (<= 5 main_~input~0)) [2020-10-23 20:27:41,948 INFO L270 CegarLoopResult]: At program point L14-2(lines 11 17) the Hoare annotation is: (<= 5 main_~input~0) [2020-10-23 20:27:41,948 INFO L270 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (and (<= |main_#t~ret8| 5) (<= 5 |main_#t~ret8|) (<= 5 main_~input~0)) [2020-10-23 20:27:41,948 INFO L270 CegarLoopResult]: At program point L13-3(line 13) the Hoare annotation is: (and (<= |main_#t~ret8| 5) (<= 5 |main_#t~ret8|) (<= 5 main_~input~0) (<= 5 main_~result~0) (<= main_~result~0 5)) [2020-10-23 20:27:41,949 INFO L270 CegarLoopResult]: At program point idFINAL(lines 6 9) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (or (and (<= 1 |id_#in~x|) .cse0 (<= |id_#res| 1) (<= 1 |id_#res|) (<= |id_#in~x| 1)) (and (<= |id_#res| 4) (<= 4 |id_#res|) .cse0 (<= |id_#in~x| 4) (<= 4 |id_#in~x|)) (and (<= 2 |id_#res|) .cse0 (<= |id_#res| 2) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and .cse0 (<= 6 |id_#in~x|)) (and (<= |id_#res| 3) (<= 3 |id_#in~x|) .cse0 (<= |id_#in~x| 3) (<= 3 |id_#res|)) (and .cse0 (= |id_#res| 0) (= |id_#in~x| 0)) (and (<= 5 |id_#res|) (<= 5 |id_#in~x|) .cse0 (<= |id_#res| 5)))) [2020-10-23 20:27:41,949 INFO L270 CegarLoopResult]: At program point idEXIT(lines 6 9) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (or (and (<= 1 |id_#in~x|) .cse0 (<= |id_#res| 1) (<= 1 |id_#res|) (<= |id_#in~x| 1)) (and (<= |id_#res| 4) (<= 4 |id_#res|) .cse0 (<= |id_#in~x| 4) (<= 4 |id_#in~x|)) (and (<= 2 |id_#res|) .cse0 (<= |id_#res| 2) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and .cse0 (<= 6 |id_#in~x|)) (and (<= |id_#res| 3) (<= 3 |id_#in~x|) .cse0 (<= |id_#in~x| 3) (<= 3 |id_#res|)) (and .cse0 (= |id_#res| 0) (= |id_#in~x| 0)) (and (<= 5 |id_#res|) (<= 5 |id_#in~x|) .cse0 (<= |id_#res| 5)))) [2020-10-23 20:27:41,949 INFO L270 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= |id_#in~x| id_~x) [2020-10-23 20:27:41,949 INFO L277 CegarLoopResult]: At program point idENTRY(lines 6 9) the Hoare annotation is: true [2020-10-23 20:27:41,949 INFO L270 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (= |id_#in~x| id_~x) [2020-10-23 20:27:41,950 INFO L270 CegarLoopResult]: At program point L8-1(line 8) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (or (and (<= 5 |id_#in~x|) .cse0 (<= 4 |id_#t~ret7|) (<= |id_#t~ret7| 4)) (and .cse0 (<= |id_#in~x| 4) (<= 3 |id_#t~ret7|) (<= |id_#t~ret7| 3) (<= 4 |id_#in~x|)) (and .cse0 (<= 6 |id_#in~x|)) (and .cse0 (<= |id_#t~ret7| 1) (<= 1 |id_#t~ret7|) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and (<= 1 |id_#in~x|) .cse0 (= |id_#t~ret7| 0) (<= |id_#in~x| 1)) (and (<= 3 |id_#in~x|) .cse0 (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|) (<= |id_#in~x| 3)))) [2020-10-23 20:27:41,950 INFO L270 CegarLoopResult]: At program point L7-1(line 7) the Hoare annotation is: (and (= |id_#in~x| id_~x) (= |id_#in~x| 0)) [2020-10-23 20:27:41,950 INFO L270 CegarLoopResult]: At program point L8-2(line 8) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (or (and (<= 5 |id_#in~x|) .cse0 (<= 4 |id_#t~ret7|) (<= |id_#t~ret7| 4)) (and .cse0 (<= |id_#in~x| 4) (<= 3 |id_#t~ret7|) (<= |id_#t~ret7| 3) (<= 4 |id_#in~x|)) (and .cse0 (<= 6 |id_#in~x|)) (and .cse0 (<= |id_#t~ret7| 1) (<= 1 |id_#t~ret7|) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and (<= 1 |id_#in~x|) .cse0 (= |id_#t~ret7| 0) (<= |id_#in~x| 1)) (and (<= 3 |id_#in~x|) .cse0 (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|) (<= |id_#in~x| 3)))) [2020-10-23 20:27:41,951 INFO L270 CegarLoopResult]: At program point L8-3(line 8) the Hoare annotation is: (and (let ((.cse0 (= |id_#in~x| id_~x))) (or (and (<= 5 |id_#res|) .cse0 (<= |id_#res| 5) (<= 4 |id_#t~ret7|) (<= |id_#t~ret7| 4)) (and .cse0 (<= 6 |id_#in~x|)) (and .cse0 (<= |id_#in~x| 4)))) (or (<= 5 |id_#in~x|) (and (<= |id_#res| 4) (<= 4 |id_#res|) (<= 3 |id_#t~ret7|) (<= |id_#t~ret7| 3) (<= 4 |id_#in~x|)) (and (<= 1 |id_#in~x|) (<= |id_#res| 1) (= |id_#t~ret7| 0) (<= 1 |id_#res|) (<= |id_#in~x| 1)) (and (<= |id_#res| 3) (<= 3 |id_#in~x|) (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|) (<= |id_#in~x| 3) (<= 3 |id_#res|)) (and (<= 2 |id_#res|) (<= |id_#t~ret7| 1) (<= |id_#res| 2) (<= 1 |id_#t~ret7|) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)))) [2020-10-23 20:27:41,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:27:41 BoogieIcfgContainer [2020-10-23 20:27:41,979 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:27:41,984 INFO L168 Benchmark]: Toolchain (without parser) took 8783.54 ms. Allocated memory was 156.2 MB in the beginning and 243.3 MB in the end (delta: 87.0 MB). Free memory was 132.9 MB in the beginning and 215.4 MB in the end (delta: -82.5 MB). Peak memory consumption was 135.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:27:41,988 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 156.2 MB. Free memory was 129.1 MB in the beginning and 129.0 MB in the end (delta: 102.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:27:41,989 INFO L168 Benchmark]: CACSL2BoogieTranslator took 219.53 ms. Allocated memory is still 156.2 MB. Free memory was 132.3 MB in the beginning and 123.4 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:27:41,989 INFO L168 Benchmark]: Boogie Preprocessor took 30.08 ms. Allocated memory is still 156.2 MB. Free memory was 123.2 MB in the beginning and 122.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:27:41,993 INFO L168 Benchmark]: RCFGBuilder took 524.99 ms. Allocated memory is still 156.2 MB. Free memory was 122.0 MB in the beginning and 109.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:27:41,994 INFO L168 Benchmark]: TraceAbstraction took 7992.64 ms. Allocated memory was 156.2 MB in the beginning and 243.3 MB in the end (delta: 87.0 MB). Free memory was 108.6 MB in the beginning and 215.4 MB in the end (delta: -106.8 MB). Peak memory consumption was 111.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:27:42,002 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 156.2 MB. Free memory was 129.1 MB in the beginning and 129.0 MB in the end (delta: 102.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 219.53 ms. Allocated memory is still 156.2 MB. Free memory was 132.3 MB in the beginning and 123.4 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.08 ms. Allocated memory is still 156.2 MB. Free memory was 123.2 MB in the beginning and 122.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 524.99 ms. Allocated memory is still 156.2 MB. Free memory was 122.0 MB in the beginning and 109.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7992.64 ms. Allocated memory was 156.2 MB in the beginning and 243.3 MB in the end (delta: 87.0 MB). Free memory was 108.6 MB in the beginning and 215.4 MB in the end (delta: -106.8 MB). Peak memory consumption was 111.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 - ProcedureContractResult [Line: 4]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 5 <= input - ProcedureContractResult [Line: 6]: Procedure Contract for id Derived contract for procedure id: (((((((((1 <= \old(x) && \old(x) == x) && \result <= 1) && 1 <= \result) && \old(x) <= 1) || ((((\result <= 4 && 4 <= \result) && \old(x) == x) && \old(x) <= 4) && 4 <= \old(x))) || ((((2 <= \result && \old(x) == x) && \result <= 2) && 2 <= \old(x)) && \old(x) <= 2)) || (\old(x) == x && 6 <= \old(x))) || ((((\result <= 3 && 3 <= \old(x)) && \old(x) == x) && \old(x) <= 3) && 3 <= \result)) || ((\old(x) == x && \result == 0) && \old(x) == 0)) || (((5 <= \result && 5 <= \old(x)) && \old(x) == x) && \result <= 5) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 7, TraceHistogramMax: 7, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 215 SDtfs, 282 SDslu, 535 SDs, 0 SdLazy, 962 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 37 LocationsWithAnnotation, 70 PreInvPairs, 179 NumberOfFragments, 584 HoareAnnotationTreeSize, 70 FomulaSimplifications, 2111 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 37 FomulaSimplificationsInter, 2545 FormulaSimplificationTreeSizeReductionInter, 1.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...