/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test_cut_trace.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 05:13:55,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 05:13:55,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 05:13:55,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 05:13:55,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 05:13:55,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 05:13:55,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 05:13:55,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 05:13:55,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 05:13:55,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 05:13:55,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 05:13:55,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 05:13:55,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 05:13:55,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 05:13:55,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 05:13:55,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 05:13:55,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 05:13:55,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 05:13:55,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 05:13:55,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 05:13:55,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 05:13:55,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 05:13:55,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 05:13:55,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 05:13:55,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 05:13:55,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 05:13:55,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 05:13:55,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 05:13:55,127 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 05:13:55,139 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 05:13:55,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 05:13:55,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 05:13:55,141 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 05:13:55,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 05:13:55,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 05:13:55,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 05:13:55,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 05:13:55,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 05:13:55,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 05:13:55,145 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 05:13:55,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 05:13:55,145 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 05:13:55,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 05:13:55,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 05:13:55,146 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 05:13:55,147 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 05:13:55,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 05:13:55,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 05:13:55,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 05:13:55,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 05:13:55,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 05:13:55,148 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-18 05:13:55,425 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 05:13:55,439 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 05:13:55,442 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 05:13:55,444 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 05:13:55,444 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 05:13:55,445 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2020-07-18 05:13:55,507 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2a5de7f/a9eb45b72fa149969494f8724ffd5a66/FLAG54c1fefde [2020-07-18 05:13:55,893 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 05:13:55,893 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2020-07-18 05:13:55,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2a5de7f/a9eb45b72fa149969494f8724ffd5a66/FLAG54c1fefde [2020-07-18 05:13:56,291 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2a5de7f/a9eb45b72fa149969494f8724ffd5a66 [2020-07-18 05:13:56,299 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 05:13:56,302 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 05:13:56,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 05:13:56,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 05:13:56,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 05:13:56,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 05:13:56" (1/1) ... [2020-07-18 05:13:56,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6204d8c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:13:56, skipping insertion in model container [2020-07-18 05:13:56,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 05:13:56" (1/1) ... [2020-07-18 05:13:56,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 05:13:56,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 05:13:56,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 05:13:56,483 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 05:13:56,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 05:13:56,516 INFO L208 MainTranslator]: Completed translation [2020-07-18 05:13:56,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:13:56 WrapperNode [2020-07-18 05:13:56,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 05:13:56,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 05:13:56,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 05:13:56,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 05:13:56,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:13:56" (1/1) ... [2020-07-18 05:13:56,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:13:56" (1/1) ... [2020-07-18 05:13:56,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:13:56" (1/1) ... [2020-07-18 05:13:56,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:13:56" (1/1) ... [2020-07-18 05:13:56,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:13:56" (1/1) ... [2020-07-18 05:13:56,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:13:56" (1/1) ... [2020-07-18 05:13:56,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:13:56" (1/1) ... [2020-07-18 05:13:56,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 05:13:56,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 05:13:56,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 05:13:56,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 05:13:56,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:13:56" (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 [2020-07-18 05:13:56,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 05:13:56,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 05:13:56,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-18 05:13:56,710 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 05:13:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 05:13:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-18 05:13:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 05:13:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 05:13:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 05:13:56,918 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 05:13:56,919 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-18 05:13:56,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 05:13:56 BoogieIcfgContainer [2020-07-18 05:13:56,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 05:13:56,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 05:13:56,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 05:13:56,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 05:13:56,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 05:13:56" (1/3) ... [2020-07-18 05:13:56,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d460171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 05:13:56, skipping insertion in model container [2020-07-18 05:13:56,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:13:56" (2/3) ... [2020-07-18 05:13:56,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d460171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 05:13:56, skipping insertion in model container [2020-07-18 05:13:56,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 05:13:56" (3/3) ... [2020-07-18 05:13:56,934 INFO L109 eAbstractionObserver]: Analyzing ICFG test_cut_trace.i [2020-07-18 05:13:56,946 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 05:13:56,955 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 05:13:56,971 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 05:13:56,996 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 05:13:56,996 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 05:13:56,997 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-18 05:13:56,997 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 05:13:56,997 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 05:13:56,997 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 05:13:56,997 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 05:13:56,997 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 05:13:57,014 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-18 05:13:57,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-18 05:13:57,025 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 05:13:57,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 05:13:57,027 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 05:13:57,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 05:13:57,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1077921841, now seen corresponding path program 1 times [2020-07-18 05:13:57,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 05:13:57,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864413221] [2020-07-18 05:13:57,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 05:13:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:13:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:13:57,372 INFO L280 TraceCheckUtils]: 0: Hoare triple {24#true} assume true; {24#true} is VALID [2020-07-18 05:13:57,373 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {24#true} {24#true} #28#return; {24#true} is VALID [2020-07-18 05:13:57,380 INFO L263 TraceCheckUtils]: 0: Hoare triple {24#true} call ULTIMATE.init(); {24#true} is VALID [2020-07-18 05:13:57,381 INFO L280 TraceCheckUtils]: 1: Hoare triple {24#true} assume true; {24#true} is VALID [2020-07-18 05:13:57,381 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {24#true} {24#true} #28#return; {24#true} is VALID [2020-07-18 05:13:57,381 INFO L263 TraceCheckUtils]: 3: Hoare triple {24#true} call #t~ret0 := main(); {24#true} is VALID [2020-07-18 05:13:57,382 INFO L280 TraceCheckUtils]: 4: Hoare triple {24#true} havoc ~z~0; {24#true} is VALID [2020-07-18 05:13:57,382 INFO L280 TraceCheckUtils]: 5: Hoare triple {24#true} havoc ~a~0; {24#true} is VALID [2020-07-18 05:13:57,387 INFO L280 TraceCheckUtils]: 6: Hoare triple {24#true} ~z~0 := 0; {28#(= 0 main_~z~0)} is VALID [2020-07-18 05:13:57,388 INFO L280 TraceCheckUtils]: 7: Hoare triple {28#(= 0 main_~z~0)} assume !(0 == ~z~0); {25#false} is VALID [2020-07-18 05:13:57,388 INFO L263 TraceCheckUtils]: 8: Hoare triple {25#false} call __blast_assert(); {25#false} is VALID [2020-07-18 05:13:57,388 INFO L280 TraceCheckUtils]: 9: Hoare triple {25#false} assume !false; {25#false} is VALID [2020-07-18 05:13:57,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 05:13:57,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864413221] [2020-07-18 05:13:57,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 05:13:57,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-18 05:13:57,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624865888] [2020-07-18 05:13:57,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-18 05:13:57,403 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 05:13:57,407 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-18 05:13:57,429 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:13:57,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-18 05:13:57,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 05:13:57,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-18 05:13:57,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 05:13:57,441 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2020-07-18 05:13:57,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:13:57,556 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-07-18 05:13:57,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-18 05:13:57,557 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-18 05:13:57,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 05:13:57,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 05:13:57,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2020-07-18 05:13:57,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 05:13:57,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2020-07-18 05:13:57,571 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 34 transitions. [2020-07-18 05:13:57,630 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:13:57,641 INFO L225 Difference]: With dead ends: 31 [2020-07-18 05:13:57,641 INFO L226 Difference]: Without dead ends: 13 [2020-07-18 05:13:57,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 05:13:57,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-18 05:13:57,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-07-18 05:13:57,692 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 05:13:57,693 INFO L82 GeneralOperation]: Start isEquivalent. First operand 13 states. Second operand 13 states. [2020-07-18 05:13:57,694 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states. Second operand 13 states. [2020-07-18 05:13:57,694 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 13 states. [2020-07-18 05:13:57,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:13:57,697 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-07-18 05:13:57,697 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-07-18 05:13:57,698 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:13:57,698 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:13:57,699 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states. Second operand 13 states. [2020-07-18 05:13:57,699 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 13 states. [2020-07-18 05:13:57,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:13:57,702 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-07-18 05:13:57,703 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-07-18 05:13:57,703 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:13:57,704 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:13:57,704 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 05:13:57,704 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 05:13:57,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-18 05:13:57,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2020-07-18 05:13:57,708 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 10 [2020-07-18 05:13:57,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 05:13:57,709 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2020-07-18 05:13:57,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-18 05:13:57,709 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 13 states and 12 transitions. [2020-07-18 05:13:57,741 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:13:57,742 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-07-18 05:13:57,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-18 05:13:57,743 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 05:13:57,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 05:13:57,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 05:13:57,744 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 05:13:57,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 05:13:57,744 INFO L82 PathProgramCache]: Analyzing trace with hash -798013776, now seen corresponding path program 1 times [2020-07-18 05:13:57,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 05:13:57,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740246633] [2020-07-18 05:13:57,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 05:13:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:13:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:13:57,845 INFO L280 TraceCheckUtils]: 0: Hoare triple {145#true} assume true; {145#true} is VALID [2020-07-18 05:13:57,845 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {145#true} {145#true} #28#return; {145#true} is VALID [2020-07-18 05:13:57,846 INFO L263 TraceCheckUtils]: 0: Hoare triple {145#true} call ULTIMATE.init(); {145#true} is VALID [2020-07-18 05:13:57,846 INFO L280 TraceCheckUtils]: 1: Hoare triple {145#true} assume true; {145#true} is VALID [2020-07-18 05:13:57,846 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {145#true} {145#true} #28#return; {145#true} is VALID [2020-07-18 05:13:57,847 INFO L263 TraceCheckUtils]: 3: Hoare triple {145#true} call #t~ret0 := main(); {145#true} is VALID [2020-07-18 05:13:57,847 INFO L280 TraceCheckUtils]: 4: Hoare triple {145#true} havoc ~z~0; {145#true} is VALID [2020-07-18 05:13:57,847 INFO L280 TraceCheckUtils]: 5: Hoare triple {145#true} havoc ~a~0; {145#true} is VALID [2020-07-18 05:13:57,848 INFO L280 TraceCheckUtils]: 6: Hoare triple {145#true} ~z~0 := 0; {149#(and (<= 0 main_~z~0) (<= main_~z~0 0))} is VALID [2020-07-18 05:13:57,850 INFO L280 TraceCheckUtils]: 7: Hoare triple {149#(and (<= 0 main_~z~0) (<= main_~z~0 0))} assume 0 == ~z~0; {149#(and (<= 0 main_~z~0) (<= main_~z~0 0))} is VALID [2020-07-18 05:13:57,851 INFO L280 TraceCheckUtils]: 8: Hoare triple {149#(and (<= 0 main_~z~0) (<= main_~z~0 0))} ~a~0 := ~z~0; {150#(and (<= main_~a~0 0) (<= 0 main_~a~0))} is VALID [2020-07-18 05:13:57,852 INFO L280 TraceCheckUtils]: 9: Hoare triple {150#(and (<= main_~a~0 0) (<= 0 main_~a~0))} assume !(0 == ~a~0); {146#false} is VALID [2020-07-18 05:13:57,852 INFO L263 TraceCheckUtils]: 10: Hoare triple {146#false} call __blast_assert(); {146#false} is VALID [2020-07-18 05:13:57,853 INFO L280 TraceCheckUtils]: 11: Hoare triple {146#false} assume !false; {146#false} is VALID [2020-07-18 05:13:57,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 05:13:57,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740246633] [2020-07-18 05:13:57,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 05:13:57,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-18 05:13:57,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331493874] [2020-07-18 05:13:57,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-18 05:13:57,857 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 05:13:57,857 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-18 05:13:57,875 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:13:57,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-18 05:13:57,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 05:13:57,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-18 05:13:57,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-18 05:13:57,876 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 4 states. [2020-07-18 05:13:57,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:13:57,942 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-07-18 05:13:57,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-18 05:13:57,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-18 05:13:57,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 05:13:57,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-18 05:13:57,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-07-18 05:13:57,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-18 05:13:57,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-07-18 05:13:57,947 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 12 transitions. [2020-07-18 05:13:57,965 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:13:57,965 INFO L225 Difference]: With dead ends: 13 [2020-07-18 05:13:57,965 INFO L226 Difference]: Without dead ends: 0 [2020-07-18 05:13:57,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-18 05:13:57,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-18 05:13:57,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-18 05:13:57,967 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 05:13:57,967 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-18 05:13:57,968 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-18 05:13:57,968 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-18 05:13:57,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:13:57,968 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-18 05:13:57,969 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 05:13:57,969 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:13:57,969 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:13:57,969 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-18 05:13:57,970 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-18 05:13:57,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:13:57,970 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-18 05:13:57,970 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 05:13:57,971 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:13:57,971 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:13:57,971 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 05:13:57,971 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 05:13:57,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-18 05:13:57,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-18 05:13:57,972 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-07-18 05:13:57,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 05:13:57,972 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-18 05:13:57,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-18 05:13:57,973 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2020-07-18 05:13:57,973 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:13:57,973 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 05:13:57,973 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:13:57,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 05:13:57,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-18 05:13:58,118 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-18 05:13:58,119 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-18 05:13:58,119 INFO L271 CegarLoopResult]: At program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) the Hoare annotation is: true [2020-07-18 05:13:58,119 INFO L271 CegarLoopResult]: At program point __blast_assertEXIT(lines 4 7) the Hoare annotation is: true [2020-07-18 05:13:58,119 INFO L271 CegarLoopResult]: At program point __blast_assertFINAL(lines 4 7) the Hoare annotation is: true [2020-07-18 05:13:58,119 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-07-18 05:13:58,120 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-18 05:13:58,120 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-18 05:13:58,120 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-18 05:13:58,120 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-18 05:13:58,120 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 20) the Hoare annotation is: true [2020-07-18 05:13:58,120 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 13 20) the Hoare annotation is: (= 0 main_~z~0) [2020-07-18 05:13:58,121 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (<= main_~a~0 0) (= 0 main_~z~0) (<= 0 main_~a~0)) [2020-07-18 05:13:58,121 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= 0 main_~z~0) [2020-07-18 05:13:58,121 INFO L264 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: false [2020-07-18 05:13:58,121 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-07-18 05:13:58,121 INFO L264 CegarLoopResult]: At program point L18-3(line 18) the Hoare annotation is: (= 0 main_~z~0) [2020-07-18 05:13:58,122 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-07-18 05:13:58,122 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: false [2020-07-18 05:13:58,122 INFO L264 CegarLoopResult]: At program point L16-3(line 16) the Hoare annotation is: (= 0 main_~z~0) [2020-07-18 05:13:58,122 INFO L264 CegarLoopResult]: At program point mainFINAL(lines 13 20) the Hoare annotation is: (= 0 main_~z~0) [2020-07-18 05:13:58,131 INFO L163 areAnnotationChecker]: CFG has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-18 05:13:58,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 05:13:58 BoogieIcfgContainer [2020-07-18 05:13:58,142 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 05:13:58,146 INFO L168 Benchmark]: Toolchain (without parser) took 1844.42 ms. Allocated memory was 139.5 MB in the beginning and 233.3 MB in the end (delta: 93.8 MB). Free memory was 103.8 MB in the beginning and 192.1 MB in the end (delta: -88.3 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. [2020-07-18 05:13:58,147 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-18 05:13:58,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 213.85 ms. Allocated memory is still 139.5 MB. Free memory was 103.4 MB in the beginning and 94.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-07-18 05:13:58,149 INFO L168 Benchmark]: Boogie Preprocessor took 31.78 ms. Allocated memory is still 139.5 MB. Free memory was 94.1 MB in the beginning and 92.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-18 05:13:58,150 INFO L168 Benchmark]: RCFGBuilder took 374.19 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 92.7 MB in the beginning and 171.6 MB in the end (delta: -78.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-18 05:13:58,151 INFO L168 Benchmark]: TraceAbstraction took 1217.49 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 171.0 MB in the beginning and 192.1 MB in the end (delta: -21.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 7.1 GB. [2020-07-18 05:13:58,155 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 213.85 ms. Allocated memory is still 139.5 MB. Free memory was 103.4 MB in the beginning and 94.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.78 ms. Allocated memory is still 139.5 MB. Free memory was 94.1 MB in the beginning and 92.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 374.19 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 92.7 MB in the beginning and 171.6 MB in the end (delta: -78.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1217.49 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 171.0 MB in the beginning and 192.1 MB in the end (delta: -21.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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 __blast_assert Derived contract for procedure __blast_assert: 1 - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 0 == z - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 7 SDslu, 20 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 29 PreInvPairs, 36 NumberOfFragments, 40 HoareAnnotationTreeSize, 29 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 21 FomulaSimplificationsInter, 20 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 418 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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...